machine: fix usb truncation?

Remove the sendUSBPacket maxLen param because this greatly confused the compiler.
It also fixes a bug where the length provided to the hardware may not match the length of the packet.
sendUSBPacket now panics if the sent packet is too big.

I also fixed some of the string descriptor logic where we could create a packet without fully populating it.

RP2* systems might require some more work since they are implemented very differently?
I don't have any of those to test with yet, so maybe someone can deal with them in a seperate PR?

.circleci/config.yml

@@ -0,0 +1,119 @@
+version: 2.1
+
+commands:
+  submodules:
+    steps:
+      - run:
+          name: "Pull submodules"
+          command: git submodule update --init
+  llvm-source-linux:
+    steps:
+      - restore_cache:
+          keys:
+            - llvm-source-19-v1
+      - run:
+          name: "Fetch LLVM source"
+          command: make llvm-source
+      - save_cache:
+          key: llvm-source-19-v1
+          paths:
+            - llvm-project/clang/lib/Headers
+            - llvm-project/clang/include
+            - llvm-project/compiler-rt
+            - llvm-project/lld/include
+            - llvm-project/llvm/include
+  hack-ninja-jobs:
+    steps:
+      - run:
+          name: "Hack Ninja to use less jobs"
+          command: |
+            echo -e '#!/bin/sh\n/usr/bin/ninja -j3 "$@"' > /go/bin/ninja
+            chmod +x /go/bin/ninja
+  build-binaryen-linux:
+    steps:
+      - restore_cache:
+          keys:
+            - binaryen-linux-v3
+      - run:
+          name: "Build Binaryen"
+          command: |
+            make binaryen
+      - save_cache:
+          key: binaryen-linux-v3
+          paths:
+            - build/wasm-opt
+  test-linux:
+    parameters:
+      llvm:
+        type: string
+      fmt-check:
+        type: boolean
+        default: true
+    steps:
+      - checkout
+      - submodules
+      - run:
+          name: "Install apt dependencies"
+          command: |
+            echo 'deb https://apt.llvm.org/bullseye/ llvm-toolchain-bullseye-<<parameters.llvm>> main' > /etc/apt/sources.list.d/llvm.list
+            wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -
+            apt-get update
+            apt-get install --no-install-recommends -y \
+                llvm-<<parameters.llvm>>-dev \
+                clang-<<parameters.llvm>> \
+                libclang-<<parameters.llvm>>-dev \
+                lld-<<parameters.llvm>> \
+                cmake \
+                ninja-build
+      - hack-ninja-jobs
+      - build-binaryen-linux
+      - restore_cache:
+          keys:
+            - go-cache-v4-{{ checksum "go.mod" }}-{{ .Environment.CIRCLE_PREVIOUS_BUILD_NUM }}
+            - go-cache-v4-{{ checksum "go.mod" }}
+      - llvm-source-linux
+      - run: go install -tags=llvm<<parameters.llvm>> .
+      - when:
+          condition: <<parameters.fmt-check>>
+          steps:
+          - run:
+              # Do this before gen-device so that it doesn't check the
+              # formatting of generated files.
+              name: Check Go code formatting
+              command: make fmt-check lint
+      - run: make gen-device -j4
+      # TODO: change this to -skip='TestErrors|TestWasm' with Go 1.20
+      - run: go test -tags=llvm<<parameters.llvm>> -short -run='TestBuild|TestTest|TestGetList|TestTraceback'
+      - run: make smoketest XTENSA=0
+      - save_cache:
+          key: go-cache-v4-{{ checksum "go.mod" }}-{{ .Environment.CIRCLE_BUILD_NUM }}
+          paths:
+            - ~/.cache/go-build
+            - /go/pkg/mod
+
+jobs:
+  test-oldest:
+    # This tests our lowest supported versions of Go and LLVM, to make sure at
+    # least the smoke tests still pass.
+    docker:
+      - image: golang:1.22-bullseye
+    steps:
+      - test-linux:
+          llvm: "15"
+    resource_class: large
+  test-newest:
+    # This tests the latest supported LLVM version when linking against system
+    # libraries.
+    docker:
+      - image: golang:1.25-bullseye
+    steps:
+      - test-linux:
+          llvm: "20"
+    resource_class: large
+
+workflows:
+  test-all:
+    jobs:
+      - test-oldest
+      # disable this test, since CircleCI seems unable to download due to rate-limits on Dockerhub.
+      # - test-newest

.dockerignore

@@ -1,4 +1,5 @@
 build/
 llvm-*/
 .github
+.circleci
 

.github/workflows/build-macos.yml

@@ -31,7 +31,7 @@ jobs:
         run: |
           HOMEBREW_NO_AUTO_UPDATE=1 brew install qemu binaryen
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
         with:
           submodules: true
       - name: Extract TinyGo version
@@ -40,10 +40,10 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v6
         with:
-          go-version: '1.26.2'
+          go-version: '1.25.5'
           cache: true
       - name: Restore LLVM source cache
-        uses: actions/cache/restore@v5
+        uses: actions/cache/restore@v4
         id: cache-llvm-source
         with:
           key: llvm-source-20-${{ matrix.os }}-v1
@@ -57,7 +57,7 @@ jobs:
         if: steps.cache-llvm-source.outputs.cache-hit != 'true'
         run: make llvm-source
       - name: Save LLVM source cache
-        uses: actions/cache/save@v5
+        uses: actions/cache/save@v4
         if: steps.cache-llvm-source.outputs.cache-hit != 'true'
         with:
           key: ${{ steps.cache-llvm-source.outputs.cache-primary-key }}
@@ -68,7 +68,7 @@ jobs:
             llvm-project/lld/include
             llvm-project/llvm/include
       - name: Restore LLVM build cache
-        uses: actions/cache/restore@v5
+        uses: actions/cache/restore@v4
         id: cache-llvm-build
         with:
           key: llvm-build-20-${{ matrix.os }}-v2
@@ -85,7 +85,7 @@ jobs:
           make llvm-build
           find llvm-build -name CMakeFiles -prune -exec rm -r '{}' \;
       - name: Save LLVM build cache
-        uses: actions/cache/save@v5
+        uses: actions/cache/save@v4
         if: steps.cache-llvm-build.outputs.cache-hit != 'true'
         with:
           key: ${{ steps.cache-llvm-build.outputs.cache-primary-key }}
@@ -101,11 +101,16 @@ jobs:
       - name: Make release artifact
         run: cp -p build/release.tar.gz build/tinygo${{ steps.version.outputs.version }}.darwin-${{ matrix.goarch }}.tar.gz
       - name: Publish release artifact
-        uses: actions/upload-artifact@v7
+        # Note: this release artifact is double-zipped, see:
+        # https://github.com/actions/upload-artifact/issues/39
+        # We can essentially pick one of these:
+        # - have a double-zipped artifact when downloaded from the UI
+        # - have a very slow artifact upload
+        # We're doing the former here, to keep artifact uploads fast.
+        uses: actions/upload-artifact@v4
         with:
           name: darwin-${{ matrix.goarch }}-double-zipped-${{ steps.version.outputs.version }}
           path: build/tinygo${{ steps.version.outputs.version }}.darwin-${{ matrix.goarch }}.tar.gz
-          archive: false
       - name: Smoke tests
         run: make smoketest TINYGO=$(PWD)/build/tinygo
   test-macos-homebrew:
@@ -116,7 +121,7 @@ jobs:
         version: [16, 17, 18, 19, 20]
     steps:
       - name: Set up Homebrew
-        uses: Homebrew/actions/setup-homebrew@main
+        uses: Homebrew/actions/setup-homebrew@master
       - name: Fix Python symlinks
         run: |
           # Github runners have broken symlinks, so relink
@@ -125,13 +130,12 @@ jobs:
       - name: Install LLVM
         run: |
           brew install llvm@${{ matrix.version }}
-          brew link llvm@${{ matrix.version }}
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
       - name: Install Go
         uses: actions/setup-go@v6
         with:
-          go-version: '1.26.2'
+          go-version: '1.25.5'
           cache: true
       - name: Build TinyGo (LLVM ${{ matrix.version }})
         run: go install -tags=llvm${{ matrix.version }}

.github/workflows/docker.yml

@@ -31,14 +31,14 @@ jobs:
           sudo rm -rf /usr/local/share/boost
           df -h
       - name: Check out the repo
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
         with:
           submodules: recursive
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v4
+        uses: docker/setup-buildx-action@v3
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v6
+        uses: docker/metadata-action@v5
         with:
           images: |
             tinygo/tinygo-dev
@@ -47,18 +47,18 @@ jobs:
             type=sha,format=long
             type=raw,value=latest
       - name: Log in to Docker Hub
-        uses: docker/login-action@v4
+        uses: docker/login-action@v3
         with:
           username: ${{ secrets.DOCKER_HUB_USERNAME }}
           password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
       - name: Log in to Github Container Registry
-        uses: docker/login-action@v4
+        uses: docker/login-action@v3
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Build and push
-        uses: docker/build-push-action@v7
+        uses: docker/build-push-action@v6
         with:
           context: .
           push: true

.github/workflows/linux.yml

@@ -18,12 +18,12 @@ jobs:
     # statically linked binary.
     runs-on: ubuntu-latest
     container:
-      image: golang:1.26-alpine
+      image: golang:1.25-alpine
     outputs:
       version: ${{ steps.version.outputs.version }}
     steps:
       - name: Install apk dependencies
-        # tar: needed for actions/cache@v5
+        # tar: needed for actions/cache@v4
         # git+openssh: needed for checkout (I think?)
         # ruby: needed to install fpm
         run: apk add tar git openssh make g++ ruby-dev mold
@@ -31,24 +31,24 @@ jobs:
         # We're not on a multi-user machine, so this is safe.
         run: git config --global --add safe.directory "$GITHUB_WORKSPACE"
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
         with:
           submodules: true
       - name: Extract TinyGo version
         id: version
         run: ./.github/workflows/tinygo-extract-version.sh | tee -a "$GITHUB_OUTPUT"
       - name: Cache Go
-        uses: actions/cache@v5
+        uses: actions/cache@v4
         with:
-          key: go-cache-linux-alpine-v2-${{ hashFiles('go.mod') }}
+          key: go-cache-linux-alpine-v1-${{ hashFiles('go.mod') }}
           path: |
             ~/.cache/go-build
             ~/go/pkg/mod
       - name: Restore LLVM source cache
-        uses: actions/cache/restore@v5
+        uses: actions/cache/restore@v4
         id: cache-llvm-source
         with:
-          key: llvm-source-20-linux-alpine-v2
+          key: llvm-source-20-linux-alpine-v1
           path: |
             llvm-project/clang/lib/Headers
             llvm-project/clang/include
@@ -59,7 +59,7 @@ jobs:
         if: steps.cache-llvm-source.outputs.cache-hit != 'true'
         run: make llvm-source
       - name: Save LLVM source cache
-        uses: actions/cache/save@v5
+        uses: actions/cache/save@v4
         if: steps.cache-llvm-source.outputs.cache-hit != 'true'
         with:
           key: ${{ steps.cache-llvm-source.outputs.cache-primary-key }}
@@ -70,10 +70,10 @@ jobs:
             llvm-project/lld/include
             llvm-project/llvm/include
       - name: Restore LLVM build cache
-        uses: actions/cache/restore@v5
+        uses: actions/cache/restore@v4
         id: cache-llvm-build
         with:
-          key: llvm-build-20-linux-alpine-v2
+          key: llvm-build-20-linux-alpine-v1
           path: llvm-build
       - name: Build LLVM
         if: steps.cache-llvm-build.outputs.cache-hit != 'true'
@@ -88,16 +88,16 @@ jobs:
           # Remove unnecessary object files (to reduce cache size).
           find llvm-build -name CMakeFiles -prune -exec rm -r '{}' \;
       - name: Save LLVM build cache
-        uses: actions/cache/save@v5
+        uses: actions/cache/save@v4
         if: steps.cache-llvm-build.outputs.cache-hit != 'true'
         with:
           key: ${{ steps.cache-llvm-build.outputs.cache-primary-key }}
           path: llvm-build
       - name: Cache Binaryen
-        uses: actions/cache@v5
+        uses: actions/cache@v4
         id: cache-binaryen
         with:
-          key: binaryen-linux-alpine-v2
+          key: binaryen-linux-alpine-v1
           path: build/wasm-opt
       - name: Build Binaryen
         if: steps.cache-binaryen.outputs.cache-hit != 'true'
@@ -118,31 +118,26 @@ jobs:
           make release deb -j3 STATIC=1
           cp -p build/release.tar.gz /tmp/tinygo${{ steps.version.outputs.version }}.linux-amd64.tar.gz
           cp -p build/release.deb    /tmp/tinygo_${{ steps.version.outputs.version }}_amd64.deb
-      - name: "Publish release artifact: tarball"
+      - name: Publish release artifact
-        uses: actions/upload-artifact@v7
+        uses: actions/upload-artifact@v4
         with:
-          name: tinygo${{ steps.version.outputs.version }}.linux-amd64.tar.gz
+          name: linux-amd64-double-zipped-${{ steps.version.outputs.version }}
-          path: /tmp/tinygo${{ steps.version.outputs.version }}.linux-amd64.tar.gz
+          path: |
-          archive: false
+            /tmp/tinygo${{ steps.version.outputs.version }}.linux-amd64.tar.gz
-      - name: "Publish release artifact: Debian package"
+            /tmp/tinygo_${{ steps.version.outputs.version }}_amd64.deb
-        uses: actions/upload-artifact@v7
-        with:
-          name: tinygo_${{ steps.version.outputs.version }}_amd64.deb
-          path: /tmp/tinygo_${{ steps.version.outputs.version }}_amd64.deb
-          archive: false
   test-linux-build:
     # Test the binaries built in the build-linux job by running the smoke tests.
     runs-on: ubuntu-latest
     needs: build-linux
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
         with:
           submodules: true
       - name: Install Go
         uses: actions/setup-go@v6
         with:
-          go-version: '1.26.2'
+          go-version: '1.25.5'
           cache: true
       - name: Install wasmtime
         uses: bytecodealliance/actions/wasmtime/setup@v1
@@ -151,9 +146,9 @@ jobs:
       - name: Install wasm-tools
         uses: bytecodealliance/actions/wasm-tools/setup@v1
       - name: Download release artifact
-        uses: actions/download-artifact@v8
+        uses: actions/download-artifact@v4
         with:
-          name: tinygo${{ needs.build-linux.outputs.version }}.linux-amd64.tar.gz
+          name: linux-amd64-double-zipped-${{ needs.build-linux.outputs.version }}
       - name: Extract release tarball
         run: |
           mkdir -p ~/lib
@@ -169,7 +164,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
         with:
           submodules: true
       - name: Install apt dependencies
@@ -186,10 +181,10 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v6
         with:
-          go-version: '1.26.2'
+          go-version: '1.25.5'
           cache: true
       - name: Install Node.js
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@v4
         with:
           node-version: '18'
       - name: Install wasmtime
@@ -199,7 +194,7 @@ jobs:
       - name: Setup `wasm-tools`
         uses: bytecodealliance/actions/wasm-tools/setup@v1
       - name: Restore LLVM source cache
-        uses: actions/cache/restore@v5
+        uses: actions/cache/restore@v4
         id: cache-llvm-source
         with:
           key: llvm-source-20-linux-asserts-v1
@@ -213,7 +208,7 @@ jobs:
         if: steps.cache-llvm-source.outputs.cache-hit != 'true'
         run: make llvm-source
       - name: Save LLVM source cache
-        uses: actions/cache/save@v5
+        uses: actions/cache/save@v4
         if: steps.cache-llvm-source.outputs.cache-hit != 'true'
         with:
           key: ${{ steps.cache-llvm-source.outputs.cache-primary-key }}
@@ -224,7 +219,7 @@ jobs:
             llvm-project/lld/include
             llvm-project/llvm/include
       - name: Restore LLVM build cache
-        uses: actions/cache/restore@v5
+        uses: actions/cache/restore@v4
         id: cache-llvm-build
         with:
           key: llvm-build-20-linux-asserts-v1
@@ -240,13 +235,13 @@ jobs:
           # Remove unnecessary object files (to reduce cache size).
           find llvm-build -name CMakeFiles -prune -exec rm -r '{}' \;
       - name: Save LLVM build cache
-        uses: actions/cache/save@v5
+        uses: actions/cache/save@v4
         if: steps.cache-llvm-build.outputs.cache-hit != 'true'
         with:
           key: ${{ steps.cache-llvm-build.outputs.cache-primary-key }}
           path: llvm-build
       - name: Cache Binaryen
-        uses: actions/cache@v5
+        uses: actions/cache@v4
         id: cache-binaryen
         with:
           key: binaryen-linux-asserts-v1
@@ -289,7 +284,7 @@ jobs:
     needs: build-linux
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
       - name: Get TinyGo version
         id: version
         run: ./.github/workflows/tinygo-extract-version.sh | tee -a "$GITHUB_OUTPUT"
@@ -303,10 +298,10 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v6
         with:
-          go-version: '1.26.2'
+          go-version: '1.25.5'
           cache: true
       - name: Restore LLVM source cache
-        uses: actions/cache/restore@v5
+        uses: actions/cache/restore@v4
         id: cache-llvm-source
         with:
           key: llvm-source-20-linux-v1
@@ -320,7 +315,7 @@ jobs:
         if: steps.cache-llvm-source.outputs.cache-hit != 'true'
         run: make llvm-source
       - name: Save LLVM source cache
-        uses: actions/cache/save@v5
+        uses: actions/cache/save@v4
         if: steps.cache-llvm-source.outputs.cache-hit != 'true'
         with:
           key: ${{ steps.cache-llvm-source.outputs.cache-primary-key }}
@@ -331,7 +326,7 @@ jobs:
             llvm-project/lld/include
             llvm-project/llvm/include
       - name: Restore LLVM build cache
-        uses: actions/cache/restore@v5
+        uses: actions/cache/restore@v4
         id: cache-llvm-build
         with:
           key: llvm-build-20-linux-${{ matrix.goarch }}-v1
@@ -349,13 +344,13 @@ jobs:
           # Remove unnecessary object files (to reduce cache size).
           find llvm-build -name CMakeFiles -prune -exec rm -r '{}' \;
       - name: Save LLVM build cache
-        uses: actions/cache/save@v5
+        uses: actions/cache/save@v4
         if: steps.cache-llvm-build.outputs.cache-hit != 'true'
         with:
           key: ${{ steps.cache-llvm-build.outputs.cache-primary-key }}
           path: llvm-build
       - name: Cache Binaryen
-        uses: actions/cache@v5
+        uses: actions/cache@v4
         id: cache-binaryen
         with:
           key: binaryen-linux-${{ matrix.goarch }}-v4
@@ -375,9 +370,9 @@ jobs:
         run: |
           make CROSS=${{ matrix.toolchain }}
       - name: Download amd64 release
-        uses: actions/download-artifact@v8
+        uses: actions/download-artifact@v4
         with:
-          name: tinygo${{ needs.build-linux.outputs.version }}.linux-amd64.tar.gz
+          name: linux-amd64-double-zipped-${{ needs.build-linux.outputs.version }}
       - name: Extract amd64 release
         run: |
           mkdir -p build/release
@@ -389,17 +384,12 @@ jobs:
       - name: Create ${{ matrix.goarch }} release
         run: |
           make release deb RELEASEONLY=1 DEB_ARCH=${{ matrix.libc }}
-          cp -p build/release.tar.gz /tmp/tinygo${{ needs.build-linux.outputs.version }}.linux-${{ matrix.goarch }}.tar.gz
+          cp -p build/release.tar.gz /tmp/tinygo${{ steps.version.outputs.version }}.linux-${{ matrix.goarch }}.tar.gz
-          cp -p build/release.deb    /tmp/tinygo_${{ needs.build-linux.outputs.version }}_${{ matrix.libc }}.deb
+          cp -p build/release.deb    /tmp/tinygo_${{ steps.version.outputs.version }}_${{ matrix.libc }}.deb
-      - name: "Publish release artifact: tarball"
+      - name: Publish release artifact
-        uses: actions/upload-artifact@v7
+        uses: actions/upload-artifact@v4
         with:
-          name: linux-${{ matrix.goarch }}-double-zipped-${{ needs.build-linux.outputs.version }}
+          name: linux-${{ matrix.goarch }}-double-zipped-${{ steps.version.outputs.version }}
-          path: /tmp/tinygo${{ needs.build-linux.outputs.version }}.linux-${{ matrix.goarch }}.tar.gz
+          path: |
-          archive: false
+            /tmp/tinygo${{ steps.version.outputs.version }}.linux-${{ matrix.goarch }}.tar.gz
-      - name: "Publish release artifact: Debian package"
+            /tmp/tinygo_${{ steps.version.outputs.version }}_${{ matrix.libc }}.deb
-        uses: actions/upload-artifact@v7
-        with:
-          name: linux-${{ matrix.goarch }}-double-zipped-${{ needs.build-linux.outputs.version }}
-          path: /tmp/tinygo_${{ needs.build-linux.outputs.version }}_${{ matrix.libc }}.deb
-          archive: false

.github/workflows/llvm.yml

@@ -25,14 +25,14 @@ jobs:
       contents: read
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
         with:
           submodules: recursive
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v4
+        uses: docker/setup-buildx-action@v3
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v6
+        uses: docker/metadata-action@v5
         with:
           images: |
             tinygo/llvm-20
@@ -46,13 +46,13 @@ jobs:
           username: ${{ secrets.DOCKER_HUB_USERNAME }}
           password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
       - name: Log in to Github Container Registry
-        uses: docker/login-action@v4
+        uses: docker/login-action@v3
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Build and push
-        uses: docker/build-push-action@v7
+        uses: docker/build-push-action@v6
         with:
           target: tinygo-llvm-build
           context: .

.github/workflows/nix.yml

@@ -21,12 +21,12 @@ jobs:
         # See: https://github.com/tinygo-org/tinygo/pull/4516#issuecomment-2416363668
         run: sudo apt-get remove llvm-18
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
       - name: Pull musl, bdwgc
         run: |
             git submodule update --init lib/musl lib/bdwgc
       - name: Restore LLVM source cache
-        uses: actions/cache/restore@v5
+        uses: actions/cache/restore@v4
         id: cache-llvm-source
         with:
           key: llvm-source-20-linux-nix-v1
@@ -36,13 +36,13 @@ jobs:
         if: steps.cache-llvm-source.outputs.cache-hit != 'true'
         run: make llvm-source
       - name: Save LLVM source cache
-        uses: actions/cache/save@v5
+        uses: actions/cache/save@v4
         if: steps.cache-llvm-source.outputs.cache-hit != 'true'
         with:
           key: ${{ steps.cache-llvm-source.outputs.cache-primary-key }}
           path: |
             llvm-project/compiler-rt
-      - uses: cachix/install-nix-action@v31
+      - uses: cachix/install-nix-action@v22
       - name: Test
         run: |
           nix develop --ignore-environment --keep HOME --command bash -c "go install && ~/go/bin/tinygo version && ~/go/bin/tinygo build -o test ./testdata/cgo"

.github/workflows/sizediff.yml

@@ -20,14 +20,14 @@ jobs:
         run: |
           echo "$HOME/go/bin" >> $GITHUB_PATH
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0 # fetch all history (no sparse checkout)
           submodules: true
       - name: Install apt dependencies
         run: ./.github/workflows/sizediff-install-pkgs.sh
       - name: Restore LLVM source cache
-        uses: actions/cache@v5
+        uses: actions/cache@v4
         id: cache-llvm-source
         with:
           key: llvm-source-20-sizediff-v1
@@ -37,7 +37,7 @@ jobs:
         if: steps.cache-llvm-source.outputs.cache-hit != 'true'
         run: make llvm-source
       - name: Cache Go
-        uses: actions/cache@v5
+        uses: actions/cache@v4
         with:
           key: go-cache-linux-sizediff-v2-${{ hashFiles('go.mod') }}
           path: |

.github/workflows/windows.yml

@@ -24,13 +24,14 @@ jobs:
           maximum-size: 24GB
           disk-root: "C:"
       - uses: MinoruSekine/setup-scoop@v4
+        with:
+          scoop_update: 'false'
       - name: Install Dependencies
         shell: bash
         run: |
-          scoop config use_external_7zip true
           scoop install ninja binaryen
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
         with:
           submodules: true
       - name: Extract TinyGo version
@@ -40,10 +41,10 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v6
         with:
-          go-version: '1.26.2'
+          go-version: '1.25.5'
           cache: true
       - name: Restore cached LLVM source
-        uses: actions/cache/restore@v5
+        uses: actions/cache/restore@v4
         id: cache-llvm-source
         with:
           key: llvm-source-20-windows-v1
@@ -57,7 +58,7 @@ jobs:
         if: steps.cache-llvm-source.outputs.cache-hit != 'true'
         run: make llvm-source
       - name: Save cached LLVM source
-        uses: actions/cache/save@v5
+        uses: actions/cache/save@v4
         if: steps.cache-llvm-source.outputs.cache-hit != 'true'
         with:
           key: ${{ steps.cache-llvm-source.outputs.cache-primary-key }}
@@ -68,7 +69,7 @@ jobs:
             llvm-project/lld/include
             llvm-project/llvm/include
       - name: Restore cached LLVM build
-        uses: actions/cache/restore@v5
+        uses: actions/cache/restore@v4
         id: cache-llvm-build
         with:
           key: llvm-build-20-windows-v2
@@ -85,21 +86,20 @@ jobs:
           # Remove unnecessary object files (to reduce cache size).
           find llvm-build -name CMakeFiles -prune -exec rm -r '{}' \;
       - name: Save cached LLVM build
-        uses: actions/cache/save@v5
+        uses: actions/cache/save@v4
         if: steps.cache-llvm-build.outputs.cache-hit != 'true'
         with:
           key: ${{ steps.cache-llvm-build.outputs.cache-primary-key }}
           path: llvm-build
       - name: Cache Go cache
-        uses: actions/cache@v5
+        uses: actions/cache@v4
         with:
-          key: go-cache-windows-v2-${{ hashFiles('go.mod') }}
+          key: go-cache-windows-v1-${{ hashFiles('go.mod') }}
           path: |
             C:/Users/runneradmin/AppData/Local/go-build
             C:/Users/runneradmin/go/pkg/mod
       - name: Install wasmtime
         run: |
-          scoop config use_external_7zip true
           scoop install wasmtime@29.0.1
       - name: make gen-device
         run: make -j3 gen-device
@@ -114,11 +114,16 @@ jobs:
         working-directory: build/release
         run: 7z -tzip a tinygo${{ steps.version.outputs.version }}.windows-amd64.zip tinygo
       - name: Publish release artifact
-        uses: actions/upload-artifact@v7
+        # Note: this release artifact is double-zipped, see:
+        # https://github.com/actions/upload-artifact/issues/39
+        # We can essentially pick one of these:
+        # - have a dobule-zipped artifact when downloaded from the UI
+        # - have a very slow artifact upload
+        # We're doing the former here, to keep artifact uploads fast.
+        uses: actions/upload-artifact@v4
         with:
-          name: tinygo${{ steps.version.outputs.version }}.windows-amd64.zip
+          name: windows-amd64-double-zipped-${{ steps.version.outputs.version }}
           path: build/release/tinygo${{ steps.version.outputs.version }}.windows-amd64.zip
-          archive: false
 
   smoke-test-windows:
     runs-on: windows-2022
@@ -131,24 +136,28 @@ jobs:
           maximum-size: 24GB
           disk-root: "C:"
       - uses: MinoruSekine/setup-scoop@v4
+        with:
+          scoop_update: 'false'
       - name: Install Dependencies
         shell: bash
         run: |
-          scoop config use_external_7zip true
           scoop install binaryen
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
       - name: Install Go
         uses: actions/setup-go@v6
         with:
-          go-version: '1.26.2'
+          go-version: '1.25.5'
           cache: true
       - name: Download TinyGo build
-        uses: actions/download-artifact@v8
+        uses: actions/download-artifact@v4
         with:
-          name: tinygo${{ needs.build-windows.outputs.version }}.windows-amd64.zip
+          name: windows-amd64-double-zipped-${{ needs.build-windows.outputs.version }}
           path: build/
-        # This build is already unzipped.
+      - name: Unzip TinyGo build
+        shell: bash
+        working-directory: build
+        run: 7z x tinygo*.windows-amd64.zip -r
       - name: Smoke tests
         shell: bash
         run: make smoketest TINYGO=$(PWD)/build/tinygo/bin/tinygo
@@ -164,18 +173,21 @@ jobs:
           maximum-size: 24GB
           disk-root: "C:"
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
       - name: Install Go
         uses: actions/setup-go@v6
         with:
-          go-version: '1.26.2'
+          go-version: '1.25.5'
           cache: true
       - name: Download TinyGo build
-        uses: actions/download-artifact@v8
+        uses: actions/download-artifact@v4
         with:
-          name: tinygo${{ needs.build-windows.outputs.version }}.windows-amd64.zip
+          name: windows-amd64-double-zipped-${{ needs.build-windows.outputs.version }}
           path: build/
-        # This build is already unzipped.
+      - name: Unzip TinyGo build
+        shell: bash
+        working-directory: build
+        run: 7z x tinygo*.windows-amd64.zip -r
       - name: Test stdlib packages
         run: make tinygo-test TINYGO=$(PWD)/build/tinygo/bin/tinygo
 
@@ -190,23 +202,27 @@ jobs:
           maximum-size: 24GB
           disk-root: "C:"
       - uses: MinoruSekine/setup-scoop@v4
+        with:
+          scoop_update: 'false'
       - name: Install Dependencies
         shell: bash
         run: |
-          scoop config use_external_7zip true
+          scoop install binaryen && scoop install wasmtime@29.0.1
-          scoop install binaryen wasmtime@29.0.1
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
       - name: Install Go
         uses: actions/setup-go@v6
         with:
-          go-version: '1.26.2'
+          go-version: '1.25.5'
           cache: true
       - name: Download TinyGo build
-        uses: actions/download-artifact@v8
+        uses: actions/download-artifact@v4
         with:
-          name: tinygo${{ needs.build-windows.outputs.version }}.windows-amd64.zip
+          name: windows-amd64-double-zipped-${{ needs.build-windows.outputs.version }}
           path: build/
-        # This build is already unzipped.
+      - name: Unzip TinyGo build
+        shell: bash
+        working-directory: build
+        run: 7z x tinygo*.windows-amd64.zip -r
       - name: Test stdlib packages on wasip1
         run: make tinygo-test-wasip1-fast TINYGO=$(PWD)/build/tinygo/bin/tinygo

CHANGELOG.md

@@ -1,160 +1,3 @@
-0.41.1
----
-* **machine**
-  - esp32c3: correct pin interrupt setup call that was overlooked from #5320
-* **runtime**
-  - esp32s3: wait for TIMG0 update register to clear before reading timer registers
-* **net**
-  - update net module to a version that is backwards compatible with Go 1.25.x to fix #5332
-
-0.41.0
----
-* **general**
-  - go.mod, compiler: bump minimum Go version to 1.23
-  - builder: support Go 1.26 now
-  - feat: add inheritable-only field to filter processor-level targets (#5270)
-  - feature: add esp32flash flash method for esp32s3/esp32c3/esp32/esp8266
-  - flashing: introduce flash method 'esp32jtag' for esp32c3/esp32s3 targets
-  - fashing: add "adb" flash method using Android Debug Bridge
-  - main: auto-use best available flashing options on esp32
-  - espflasher: update to espflasher 0.6.0
-* **compiler**
-  - implement method-set based AssignableTo and Implements (#5304)
-  - simplify createObjectLayout
-  - implement copy directly
-  - fix min/max on floats by using intrinsics
-  - add element layout to sliceAppend
-  - add intrinsic for crypto/internal/constanttime.boolToUint8
-  - fix SyscallN handling for Windows on Go 1.26+
-* **core**
-  - reflect: add TypeAssert
-  - reflect: fix TypeAssert for structs
-  - sync: add WaitGroup.Go
-  - os: add UserCacheDir and UserConfigDir
-  - os: implement Lchown function for changing file ownership (#5161)
-  - testing: add b.ReportMetric()
-  - errors: add errors package to passing list
-  - internal/gclayout: use correct lengths
-  - internal/abi: add EscapeNonString, EscapeToResultNonString
-  - internal, runtime: add internal fips bool
-  - internal/itoa: resurrect from Go stdlib
-  - internal/syscall/unix: implement GetRandom for WASI targets
-  - interp: make ptrtoint size mismatch a recoverable error
-  - loader: support "all:" prefix in //go:embed patterns
-  - loader, crypto/internal/entropy: fix 32 MiB RAM overflow on microcontrollers
-  - loader, unicode/utf8: fix hiBits overflow on 16-bit AVR targets
-  - builder: order embedded files deterministically
-  - builder: fix panic in findPackagePath when using -size short
-  - builder: fix SIGSEGV when stripping duplicate function definitions
-  - builder, runtime: fix duplicate symbol error with Go 1.26+ on Windows
-  - builder: use target-specific -march for RISC-V library compilation
-  - transform: modify output format from the -print-allocs flag to match the go coverage tool format
-  - cgo: allow for changes to 'short-enums' flag
-  - wasm: add more stubbed file operations
-* **machine**
-  - esp32c3: implement BlockDevice for esp32c3 flash
-  - esp32c3: clear GPIO STATUS before dispatching pin callbacks
-  - esp32c3: implement USBDevice using interrupts
-  - esp32c3: add Enable stub for QEMU test target
-  - esp32c3: fix interrupt disable handling
-  - esp32c3: clear MCAUSE after handling interrupt
-  - esp32c3: map missing IRAM sections in linker script
-  - esp32c3: fix to use PROVIDE() for WiFi/BLE ROM function addresses to allow blob overrides
-  - esp32c3: add WiFi/BLE ROM linker support
-  - esp32c3: use TIMG0 alarm interrupt for sleepTicks instead of busy-waiting
-  - esp32s3: implement Pin.SetInterrupt for GPIO pin change interrupts
-  - esp32s3: use edge-triggered CPU interrupt for GPIO pin interrupts
-  - esp32s3: add interrupt support (#5244)
-  - esp32s3: switch USB implementation to use interrupts instead of polling
-  - esp32s3: replace inline ISR with full interrupt vector handler
-  - esp32s3: use TIMG0 alarm interrupt for sleepTicks
-  - esp32s3: improve exception handlers, add procPin/procUnpin, and linker wrap flags
-  - esp32s3: fix Xtensa register window spill using recursive call4 in task switching
-  - esp32s3: update linker script and boot assembly for multi-page flash XIP mapping
-  - esp32s3: add flash XIP boot assembly with cache/MMU init
-  - esp32s3: implement SPI (#5169)
-  - esp32s3: implement I2C interface (#5210)
-  - esp32s3: implement RNG based on onboard hardware random number generator
-  - esp32s3,esp32c3: add USB serial support
-  - esp32s3,esp32c3: add txStalled flag to skip USB serial spin when no host
-  - esp32s3,esp32c3: make USB Serial/JTAG writes non-blocking when FIFO is full
-  - esp32c3/esp32s3: refactor ADC implementation to reduce code duplication
-  - esp32s3,esp32c3: add ADC support (#5231)
-  - esp32s3,esp32c3: add PWM support (#5215)
-  - esp32c3/esp32s3: refactoring and corrections for SPI implementation
-  - esp32xx: add WASM simulator support for ESP32-C3/ESP32-S3 targets
-  - esp32: default SPI CS pin to NoPin when unset
-  - esp: fix tinygo_scanCurrentStack to spill register windows
-  - stm32: fix UART interrupt storm caused by uncleared overrun error
-  - stm32: fix PWM problem due to register shifting
-  - stm32: add STM32U585 target definition and runtime
-  - stm32: add STM32U5 GPIO, pin interrupts, and UART support
-  - stm32: add STM32U5 I2C support
-  - stm32: add STM32U5 SPI support
-  - stm32u585: implement ADC
-  - stm32g0b1: add support (#5150)
-  - stm32g0b1: add Watchdog + ADC support (#5158)
-  - stm32l0: add flash support
-  - stm32l0x1,l0x2: TIM: adapt to 32-bit register access
-  - stm32g0: sync with updated stm32 device files
-  - attiny85: add USI-based SPI support (#5181)
-  - attiny85: add PWM support (#5171)
-  - rp: add Close function to UART to allow for removing all system resources/power usage
-  - rp: use blockReset() and unresetBlockWait() helper functions for peripheral reset/unreset
-  - rp2: prevent PWM Period method overflow
-  - rp2: add per-byte timeout budget for I2C (#5189)
-  - feather-m0: export UART0 and pins
-  - usb/cdc: better ring buffer implementation (#5209)
-  - fix: replace ! with ~ for register mask
-  - atmega328p_simulator: add correct build tag for arduino_uno after renaming
-* **net**
-  - update to Go 1.26.2 net package with UDP and JS improvements
-* **runtime**
-  - implement fminimum/fmaximum
-  - make timeoffset atomic
-  - add MemStats.HeapObjects
-  - handle GODEBUG on wasip2 (#5312)
-  - fix Darwin syscall return value truncation and lost arguments
-  - add syscall.runtimeClearenv for Go 1.26
-  - split syscall functions for darwin changes for 1.26
-  - fix: init heap before random number seed on wasm platforms
-* **targets**
-  - add esp32s3-supermini board target
-  - add support for Seeedstudio Xiao-RP2350 board
-  - add Shrike Lite board (#5170)
-  - rename arduino target to arduino-uno
-  - add pins/setup for Arduino UNO Q board QWIIC connector
-  - correct pin mapping for Arduino UNO Q STM32 MCU
-  - add stm32u585 openocd commands for flashing on Arduino UNO Q
-  - correct name/tag use for esp32s3-wroom1 board
-  - modify esp32, esp32s3, esp32c3, & esp8266 targets to use built-in esp32flash
-  - switch rp2040/rp2350 to default to tasks scheduler
-  - change default stack size for esp32c3 and esp32s3 to 8196
-  - swan: rename group build tag stm32l4x5 => stm32l4y5 to avoid clash with stm32 device name
-  - nucleo-f722ze: add build-tag stm32f722
-  - fix: set stm32u5x clock rate to default
-  - create generic targets for esp32 boards
-* **libs**
-  - stm32-svd: update submodule
-  - update tools/gen-device-svd for recent changes to stm32-svd file structure (#5212)
-* **build/test**
-  - build: use Golang 1.26 for all builds
-  - build: actually use the version of llvm we are supposed to be testing by using brew link command
-  - build: let scoop run updates to resolve binaryen install failures on Windows
-  - ci: don't double zip release artifacts
-  - test: increase default timeout from 1 to 2 minutes to prevent spurious CI fails
-  - testdata: fix flaky timers test by draining ticker channel after Stop
-  - testdata: more corpus entries (#5182)
-  - add soypat/lneto to corpus
-  - GNUmakefile: add context and expvar to stdlib tests
-  - GNUmakefile: add encoding/xml to stdlib tests on Linux
-  - main (test): skip mipsle test if the emulator is missing
-  - make: remove machine without board from smoketest
-  - stm32: add Arduino UNO Q to smoketests
-  - flake: bump to nixpkgs 25.11
-  - chore: update all github actions to latest versions
-  - fix: use external 7zip for scoop installs on Windows
-
 0.40.1
 ---
 * **machine**

Dockerfile

@@ -1,5 +1,5 @@
 # tinygo-llvm stage obtains the llvm source for TinyGo
-FROM golang:1.26 AS tinygo-llvm
+FROM golang:1.25 AS tinygo-llvm
 
 RUN apt-get update && \
     apt-get install -y apt-utils make cmake clang-17 ninja-build && \
@@ -33,7 +33,7 @@ RUN cd /tinygo/ && \
 
 # tinygo-compiler copies the compiler build over to a base Go container (without
 # all the build tools etc).
-FROM golang:1.26 AS tinygo-compiler
+FROM golang:1.25 AS tinygo-compiler
 
 # Copy tinygo build.
 COPY --from=tinygo-compiler-build /tinygo/build/release/tinygo /tinygo

GNUmakefile

@@ -289,13 +289,13 @@ WASM_TOOLS_MODULE=go.bytecodealliance.org
 .PHONY: wasi-syscall
 wasi-syscall: wasi-cm
 	rm -rf ./src/internal/wasi/*
-	go run $(WASM_TOOLS_MODULE)/cmd/wit-bindgen-go generate --versioned -o ./src/internal -p internal --cm internal/cm ./lib/wasi-cli/wit
+	go run -modfile ./internal/wasm-tools/go.mod $(WASM_TOOLS_MODULE)/cmd/wit-bindgen-go generate --versioned -o ./src/internal -p internal --cm internal/cm ./lib/wasi-cli/wit
 
 # Copy package cm into src/internal/cm
 .PHONY: wasi-cm
 wasi-cm:
 	rm -rf ./src/internal/cm/*
-	rsync -rv --delete --exclude go.mod --exclude '*_test.go' --exclude '*_json.go' --exclude '*.md' --exclude LICENSE $(shell go list -m -f {{.Dir}} $(WASM_TOOLS_MODULE)/cm)/ ./src/internal/cm
+	rsync -rv --delete --exclude go.mod --exclude '*_test.go' --exclude '*_json.go' --exclude '*.md' --exclude LICENSE $(shell go list -modfile ./internal/wasm-tools/go.mod -m -f {{.Dir}} $(WASM_TOOLS_MODULE)/cm)/ ./src/internal/cm
 
 # Check for Node.js used during WASM tests.
 MIN_NODEJS_VERSION=18
@@ -339,17 +339,14 @@ TEST_PACKAGES_FAST = \
 	embed/internal/embedtest \
 	encoding \
 	encoding/ascii85 \
-	errors \
 	encoding/asn1 \
 	encoding/base32 \
 	encoding/base64 \
 	encoding/csv \
 	encoding/hex \
-	expvar \
 	go/ast \
 	go/format \
 	go/scanner \
-	go/token \
 	go/version \
 	hash \
 	hash/adler32 \
@@ -362,7 +359,6 @@ TEST_PACKAGES_FAST = \
 	math/cmplx \
 	net/http/internal/ascii \
 	net/mail \
-	net/url \
 	os \
 	path \
 	reflect \
@@ -383,7 +379,6 @@ TEST_PACKAGES_FAST = \
 # crypto/des fails on wasi, needs panic()/recover()
 # crypto/hmac fails on wasi, it exits with a "slice out of range" panic
 # debug/plan9obj requires os.ReadAt, which is not yet supported on windows
-# encoding/xml takes a minute on linux and gives a stack overflow on wasi
 # image requires recover(), which is not yet supported on wasi
 # io/ioutil requires os.ReadDir, which is not yet supported on windows or wasi
 # mime: fail on wasi; neds panic()/recover()
@@ -401,13 +396,11 @@ TEST_PACKAGES_FAST = \
 TEST_PACKAGES_LINUX := \
 	archive/zip \
 	compress/flate \
-	context \
 	crypto/aes \
 	crypto/des \
 	crypto/hmac \
 	debug/dwarf \
 	debug/plan9obj \
-	encoding/xml \
 	image \
 	io/ioutil \
 	mime \
@@ -444,7 +437,6 @@ TEST_PACKAGES_NONWASM = \
 	crypto/ecdsa \
 	debug/macho \
 	embed/internal/embedtest \
-	expvar \
 	go/format \
 	os \
 	testing \
@@ -488,7 +480,7 @@ TEST_PACKAGES_HOST := $(TEST_PACKAGES_FAST) $(TEST_PACKAGES_WINDOWS)
 TEST_IOFS := false
 endif
 
-TEST_SKIP_FLAG := -skip='TestExtraMethods|TestParseAndBytesRoundTrip/P256/Generic|TestAsValidation'
+TEST_SKIP_FLAG := -skip='TestExtraMethods|TestParseAndBytesRoundTrip/P256/Generic'
 TEST_ADDITIONAL_FLAGS ?=
 
 # Test known-working standard library packages.
@@ -634,7 +626,7 @@ smoketest: testchdir
 	@$(MD5SUM) test.hex
 	# test simulated boards on play.tinygo.org
 ifneq ($(WASM), 0)
-	GOOS=js GOARCH=wasm $(TINYGO) build -size short -o test.wasm -tags=arduino_uno          examples/blinky1
+	GOOS=js GOARCH=wasm $(TINYGO) build -size short -o test.wasm -tags=arduino              examples/blinky1
 	@$(MD5SUM) test.wasm
 	GOOS=js GOARCH=wasm $(TINYGO) build -size short -o test.wasm -tags=hifive1b             examples/blinky1
 	@$(MD5SUM) test.wasm
@@ -652,8 +644,6 @@ ifneq ($(WASM), 0)
 	@$(MD5SUM) test.wasm
 	GOOS=js GOARCH=wasm $(TINYGO) build -size short -o test.wasm -tags=pico                 examples/blinky1
 	@$(MD5SUM) test.wasm
-	GOOS=js GOARCH=wasm $(TINYGO) build -size short -o test.wasm -tags=xiao_esp32s3         examples/blinky1
-	@$(MD5SUM) test.wasm
 endif
 	# test all targets/boards
 	$(TINYGO) build -size short -o test.hex -target=pca10040-s132v6     examples/blinky1
@@ -824,10 +814,6 @@ endif
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=waveshare-rp2040-tiny examples/echo
 	@$(MD5SUM) test.hex
-	$(TINYGO) build -size short -o test.hex -target=vicharak_shrike-lite examples/echo
-	@$(MD5SUM) test.hex
-	$(TINYGO) build -size short -o test.hex -target=xiao-rp2350        examples/blinky1
-	@$(MD5SUM) test.hex
 	# test pwm
 	$(TINYGO) build -size short -o test.hex -target=itsybitsy-m0        examples/pwm
 	@$(MD5SUM) test.hex
@@ -887,24 +873,18 @@ ifneq ($(STM32), 0)
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=stm32l0x1           examples/serial
 	@$(MD5SUM) test.hex
-	$(TINYGO) build -size short -o test.hex -target=arduino-uno-q       examples/blinky1
-	@$(MD5SUM) test.hex
-	$(TINYGO) build -size short -o test.hex -target=arduino-uno-q       examples/serial
-	@$(MD5SUM) test.hex
-	$(TINYGO) build -size short -o test.hex -target=arduino-uno-q       examples/blinkm
-	@$(MD5SUM) test.hex
 endif
 	$(TINYGO) build -size short -o test.hex -target=atmega328pb         examples/blinkm
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=atmega1284p         examples/machinetest
 	@$(MD5SUM) test.hex
-	$(TINYGO) build -size short -o test.hex -target=arduino-uno         examples/blinky1
+	$(TINYGO) build -size short -o test.hex -target=arduino             examples/blinky1
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=arduino-leonardo    examples/blinky1
 	@$(MD5SUM) test.hex
-	$(TINYGO) build -size short -o test.hex -target=arduino-uno         examples/pwm
+	$(TINYGO) build -size short -o test.hex -target=arduino             examples/pwm
 	@$(MD5SUM) test.hex
-	$(TINYGO) build -size short -o test.hex -target=arduino-uno -scheduler=tasks  examples/blinky1
+	$(TINYGO) build -size short -o test.hex -target=arduino -scheduler=tasks  examples/blinky1
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=arduino-mega1280    examples/blinky1
 	@$(MD5SUM) test.hex
@@ -916,25 +896,13 @@ endif
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=digispark           examples/blinky1
 	@$(MD5SUM) test.hex
-	$(TINYGO) build -size short -o test.hex -target=digispark           examples/pwm
-	@$(MD5SUM) test.hex
-	$(TINYGO) build -size short -o test.hex -target=digispark           examples/mcp3008
-	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=digispark -gc=leaking examples/blinky1
 	@$(MD5SUM) test.hex
 ifneq ($(XTENSA), 0)
-	$(TINYGO) build -size short -o test.bin -target=esp32-generic       examples/machinetest
-	@$(MD5SUM) test.bin
-	$(TINYGO) build -size short -o test.bin -target=esp32c3-generic     examples/machinetest
-	@$(MD5SUM) test.bin
-	$(TINYGO) build -size short -o test.bin -target=esp32s3-generic     examples/machinetest
-	@$(MD5SUM) test.bin
 	$(TINYGO) build -size short -o test.bin -target=esp32-mini32      	examples/blinky1
 	@$(MD5SUM) test.bin
 	$(TINYGO) build -size short -o test.bin -target=esp32c3-supermini   examples/blinky1
 	@$(MD5SUM) test.bin
-	$(TINYGO) build -size short -o test.bin -target=esp32c3-supermini   examples/blinkm
-	@$(MD5SUM) test.bin
 	$(TINYGO) build -size short -o test.bin -target=nodemcu             examples/blinky1
 	@$(MD5SUM) test.bin
 	$(TINYGO) build -size short -o test.bin -target m5stack-core2       examples/machinetest
@@ -947,39 +915,9 @@ ifneq ($(XTENSA), 0)
 	@$(MD5SUM) test.bin
 	$(TINYGO) build -size short -o test.bin -target mch2022             examples/machinetest
 	@$(MD5SUM) test.bin
-	# xiao-esp32s3
 	$(TINYGO) build -size short -o test.bin -target=xiao-esp32s3   		examples/blinky1
 	@$(MD5SUM) test.bin
-	$(TINYGO) build -size short -o test.bin -target=xiao-esp32s3   		examples/blinkm
-	@$(MD5SUM) test.bin
-	$(TINYGO) build -size short -o test.bin -target=xiao-esp32s3   		examples/mcp3008
-	@$(MD5SUM) test.bin
-	$(TINYGO) build -size short -o test.bin -target=xiao-esp32s3   		examples/pwm
-	@$(MD5SUM) test.bin
-	$(TINYGO) build -size short -o test.bin -target=xiao-esp32s3   		examples/adc
-	@$(MD5SUM) test.bin
-	# esp32s3-supermini
-	$(TINYGO) build -size short -o test.bin -target=esp32s3-supermini	    examples/blinky1
-	@$(MD5SUM) test.bin
-	$(TINYGO) build -size short -o test.bin -target=esp32s3-supermini	    examples/blinkm
-	@$(MD5SUM) test.bin
-	$(TINYGO) build -size short -o test.bin -target=esp32s3-supermini	    examples/mcp3008
-	@$(MD5SUM) test.bin
-	$(TINYGO) build -size short -o test.bin -target=esp32s3-supermini   	examples/adc
-	@$(MD5SUM) test.bin
 endif
-    # esp32c3-supermini
-	$(TINYGO) build -size short -o test.bin -target=esp32c3-supermini	    examples/blinky1
-	@$(MD5SUM) test.bin
-	$(TINYGO) build -size short -o test.bin -target=esp32c3-supermini	    examples/blinkm
-	@$(MD5SUM) test.bin
-	$(TINYGO) build -size short -o test.bin -target=esp32c3-supermini	    examples/mcp3008
-	@$(MD5SUM) test.bin
-	$(TINYGO) build -size short -o test.bin -target=esp32c3-supermini   	examples/pwm
-	@$(MD5SUM) test.bin
-	$(TINYGO) build -size short -o test.bin -target=esp32c3-supermini   	examples/adc
-	@$(MD5SUM) test.bin
-
 	$(TINYGO) build -size short -o test.bin -target=esp-c3-32s-kit      examples/blinky1
 	@$(MD5SUM) test.bin
 	$(TINYGO) build -size short -o test.bin -target=qtpy-esp32c3        examples/machinetest
@@ -992,7 +930,6 @@ endif
 	@$(MD5SUM) test.bin
 	$(TINYGO) build -size short -o test.bin -target=esp32c3-12f         examples/blinky1
 	@$(MD5SUM) test.bin
-
 	$(TINYGO) build -size short -o test.bin -target=makerfabs-esp32c3spi35 examples/machinetest
 	@$(MD5SUM) test.bin
 	$(TINYGO) build -size short -o test.hex -target=hifive1b            examples/blinky1
@@ -1186,7 +1123,7 @@ endif
 
 .PHONY: tools
 tools:
-	go generate -tags tools ./
+	cd internal/tools && go generate -tags tools ./
 
 LINTDIRS=src/os/ src/reflect/
 .PHONY: lint

LICENSE

@@ -1,8 +1,7 @@
-Copyright (c) 2018-2026 The TinyGo Authors. All rights reserved.
+Copyright (c) 2018-2025 The TinyGo Authors. All rights reserved.
 
 TinyGo includes portions of the Go standard library.
-Copyright 2009 The Go Authors. All rights reserved.
+Copyright (c) 2009-2024 The Go Authors. All rights reserved.
-See https://github.com/golang/go/blob/master/LICENSE for license information.
 
 TinyGo includes portions of LLVM, which is under the Apache License v2.0 with
 LLVM Exceptions. See https://llvm.org/LICENSE.txt for license information.

README.md

@@ -1,14 +1,11 @@
 # TinyGo - Go compiler for small places
 
-[![Linux](https://github.com/tinygo-org/tinygo/actions/workflows/linux.yml/badge.svg?branch=dev)](https://github.com/tinygo-org/tinygo/actions/workflows/linux.yml) [![macOS](https://github.com/tinygo-org/tinygo/actions/workflows/build-macos.yml/badge.svg?branch=dev)](https://github.com/tinygo-org/tinygo/actions/workflows/build-macos.yml) [![Windows](https://github.com/tinygo-org/tinygo/actions/workflows/windows.yml/badge.svg?branch=dev)](https://github.com/tinygo-org/tinygo/actions/workflows/windows.yml) [![Docker](https://github.com/tinygo-org/tinygo/actions/workflows/docker.yml/badge.svg?branch=dev)](https://github.com/tinygo-org/tinygo/actions/workflows/docker.yml) [![Nix](https://github.com/tinygo-org/tinygo/actions/workflows/nix.yml/badge.svg?branch=dev)](https://github.com/tinygo-org/tinygo/actions/workflows/nix.yml)
+[![Linux](https://github.com/tinygo-org/tinygo/actions/workflows/linux.yml/badge.svg?branch=dev)](https://github.com/tinygo-org/tinygo/actions/workflows/linux.yml) [![macOS](https://github.com/tinygo-org/tinygo/actions/workflows/build-macos.yml/badge.svg?branch=dev)](https://github.com/tinygo-org/tinygo/actions/workflows/build-macos.yml) [![Windows](https://github.com/tinygo-org/tinygo/actions/workflows/windows.yml/badge.svg?branch=dev)](https://github.com/tinygo-org/tinygo/actions/workflows/windows.yml) [![Docker](https://github.com/tinygo-org/tinygo/actions/workflows/docker.yml/badge.svg?branch=dev)](https://github.com/tinygo-org/tinygo/actions/workflows/docker.yml) [![Nix](https://github.com/tinygo-org/tinygo/actions/workflows/nix.yml/badge.svg?branch=dev)](https://github.com/tinygo-org/tinygo/actions/workflows/nix.yml) [![CircleCI](https://circleci.com/gh/tinygo-org/tinygo/tree/dev.svg?style=svg)](https://circleci.com/gh/tinygo-org/tinygo/tree/dev)
 
 TinyGo is a Go compiler intended for use in small places such as microcontrollers, WebAssembly (wasm/wasi), and command-line tools.
 
 It reuses libraries used by the [Go language tools](https://golang.org/pkg/go/) alongside [LLVM](http://llvm.org) to provide an alternative way to compile programs written in the Go programming language.
 
-> [!IMPORTANT]
-> You can help TinyGo with a financial contribution using OpenCollective. Please see https://opencollective.com/tinygo for more information. Thank you!
-
 ## Embedded
 
 Here is an example program that blinks the built-in LED when run directly on any supported board with onboard LED:
@@ -34,10 +31,10 @@ func main() {
 }
 ```
 
-The above program can be compiled and run without modification on an [Arduino Uno](https://tinygo.org/docs/reference/microcontrollers/boards/arduino-uno), an [Adafruit Circuit Playground Express](https://tinygo.org/docs/reference/microcontrollers/featured/circuitplay-express), a [Seeed Studio XIAO-ESP32S3](https://tinygo.org/docs/reference/microcontrollers/featured/xiao-esp32s3) or any of the many supported boards that have a built-in LED, just by setting the correct TinyGo compiler target. For example, this compiles and flashes an Arduino Uno:
+The above program can be compiled and run without modification on an Arduino Uno, an Adafruit ItsyBitsy M0, or any of the supported boards that have a built-in LED, just by setting the correct TinyGo compiler target. For example, this compiles and flashes an Arduino Uno:
 
 ```shell
-tinygo flash -target arduino-uno examples/blinky1
+tinygo flash -target arduino examples/blinky1
 ```
 
 ## WebAssembly
@@ -66,7 +63,7 @@ tinygo build -buildmode=c-shared -o add.wasm -target=wasip1 add.go
 You can also use the same syntax as Go 1.24+:
 
 ```shell
-GOOS=wasip1 GOARCH=wasm tinygo build -buildmode=c-shared -o add.wasm add.go
+GOARCH=wasip1 GOOS=wasm tinygo build -buildmode=c-shared -o add.wasm add.go
 ```
 
 ## Installation
@@ -77,7 +74,7 @@ See the [getting started instructions](https://tinygo.org/getting-started/) for
 
 ### Embedded
 
-You can compile TinyGo programs for over 150 different microcontroller boards.
+You can compile TinyGo programs for over 94 different microcontroller boards.
 
 For more information, please see https://tinygo.org/docs/reference/microcontrollers/
 
@@ -142,7 +139,7 @@ Non-goals:
 
 ## Why this project exists
 
-> We never expected Go to be an embedded language, and so it’s got serious problems...
+> We never expected Go to be an embedded language and so its got serious problems...
 
 -- Rob Pike, [GopherCon 2014 Opening Keynote](https://www.youtube.com/watch?v=VoS7DsT1rdM&feature=youtu.be&t=2799)
 

builder/build.go

@@ -19,7 +19,6 @@ import (
 	"os/exec"
 	"path/filepath"
 	"runtime"
-	"slices"
 	"sort"
 	"strconv"
 	"strings"
@@ -255,18 +254,6 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
 		result.PackagePathMap[pkg.OriginalDir()] = pkg.Pkg.Path()
 	}
 
-	// Strip default initializers for -X globals from the type info before
-	// building SSA. This prevents go/ssa from emitting init stores for them,
-	// so that makeGlobalsModule can supply the correct values at final link
-	// time without any runtime init overwriting them. The -X values themselves
-	// are kept out of the per-package build cache; only the variable names
-	// appear in the cache key.
-	for _, pkg := range lprogram.Sorted() {
-		for name := range globalValues[pkg.Pkg.Path()] {
-			pkg.StripVarInitializer(name)
-		}
-	}
-
 	// Create the *ssa.Program. This does not yet build the entire SSA of the
 	// program so it's pretty fast and doesn't need to be parallelized.
 	program := lprogram.LoadSSA()
@@ -294,13 +281,9 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
 				allFiles[file.Name] = append(allFiles[file.Name], file)
 			}
 		}
-		// Sort embedded files by name to maintain output determinism.
+		for name, files := range allFiles {
-		embedNames := make([]string, 0, len(allFiles))
+			name := name
-		for _, files := range allFiles {
+			files := files
-			embedNames = append(embedNames, files[0].Name)
-		}
-		slices.Sort(embedNames)
-		for _, name := range embedNames {
 			job := &compileJob{
 				description: "make object file for " + name,
 				run: func(job *compileJob) error {
@@ -315,7 +298,7 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
 					sum := sha256.Sum256(data)
 					hexSum := hex.EncodeToString(sum[:16])
 
-					for _, file := range allFiles[name] {
+					for _, file := range files {
 						file.Size = uint64(len(data))
 						file.Hash = hexSum
 						if file.NeedsData {
@@ -489,7 +472,7 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
 				if pkgInit.IsNil() {
 					panic("init not found for " + pkg.Pkg.Path())
 				}
-				err := interp.RunFunc(pkgInit, config.Options.InterpTimeout, config.Options.InterpMaxLoopIterations, config.DumpSSA())
+				err := interp.RunFunc(pkgInit, config.Options.InterpTimeout, config.DumpSSA())
 				if err != nil {
 					return err
 				}
@@ -558,23 +541,6 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
 				if err != nil {
 					return fmt.Errorf("failed to load bitcode file: %w", err)
 				}
-				// Resolve duplicate function definitions before linking.
-				// This can happen when a newer Go version adds a function
-				// body in a standard library package that was previously
-				// just a declaration provided by //go:linkname from the
-				// runtime. In that case, keep the existing (runtime)
-				// definition by weakening the new one's linkage so the
-				// LLVM linker discards it in favor of the existing one.
-				for fn := pkgMod.FirstFunction(); !fn.IsNil(); fn = llvm.NextFunction(fn) {
-					if fn.IsDeclaration() {
-						continue
-					}
-					existing := mod.NamedFunction(fn.Name())
-					if existing.IsNil() || existing.IsDeclaration() {
-						continue
-					}
-					fn.SetLinkage(llvm.LinkOnceODRLinkage)
-				}
 				err = llvm.LinkModules(mod, pkgMod)
 				if err != nil {
 					return fmt.Errorf("failed to link module: %w", err)
@@ -1208,7 +1174,7 @@ func createEmbedObjectFile(data, hexSum, sourceFile, sourceDir, tmpdir string, c
 // needed to convert a program to its final form. Some transformations are not
 // optional and must be run as the compiler expects them to run.
 func optimizeProgram(mod llvm.Module, config *compileopts.Config) error {
-	err := interp.Run(mod, config.Options.InterpTimeout, config.Options.InterpMaxLoopIterations, config.DumpSSA())
+	err := interp.Run(mod, config.Options.InterpTimeout, config.DumpSSA())
 	if err != nil {
 		return err
 	}

builder/cc1as.h

@@ -107,7 +107,7 @@ struct AssemblerInvocation {
   EmitDwarfUnwindType EmitDwarfUnwind;
 
   // Whether to emit compact-unwind for non-canonical entries.
-  // Note: maybe overridden by other constraints.
+  // Note: maybe overriden by other constraints.
   LLVM_PREFERRED_TYPE(bool)
   unsigned EmitCompactUnwindNonCanonical : 1;
 

builder/config.go

@@ -26,7 +26,7 @@ func NewConfig(options *compileopts.Options) (*compileopts.Config, error) {
 
 	// Version range supported by TinyGo.
 	const minorMin = 19
-	const minorMax = 26
+	const minorMax = 25
 
 	// Check that we support this Go toolchain version.
 	gorootMajor, gorootMinor, err := goenv.GetGorootVersion()

builder/library.go

@@ -167,9 +167,9 @@ func (l *Library) load(config *compileopts.Config, tmpdir string) (job *compileJ
 		// double.
 		args = append(args, "-mdouble=64")
 	case "riscv32":
-		args = append(args, "-march="+riscvMarch(config, "rv32imac"), "-fforce-enable-int128")
+		args = append(args, "-march=rv32imac", "-fforce-enable-int128")
 	case "riscv64":
-		args = append(args, "-march="+riscvMarch(config, "rv64gc"))
+		args = append(args, "-march=rv64gc")
 	case "mips":
 		args = append(args, "-fno-pic")
 	}
@@ -298,17 +298,3 @@ func (l *Library) load(config *compileopts.Config, tmpdir string) (job *compileJ
 		once.Do(unlock)
 	}, nil
 }
-
-// riscvMarch returns the -march value for RISC-V library compilation.
-// It extracts the value from the target's cflags if present, otherwise
-// falls back to the provided default. This ensures libraries are compiled
-// with the correct ISA extensions for each target (e.g. rv32imc for
-// ESP32-C3 which lacks the atomic extension).
-func riscvMarch(config *compileopts.Config, defaultMarch string) string {
-	for _, flag := range config.Target.CFlags {
-		if strings.HasPrefix(flag, "-march=") {
-			return flag[len("-march="):]
-		}
-	}
-	return defaultMarch
-}

builder/sizes.go

@@ -954,11 +954,7 @@ func findPackagePath(path string, packagePathMap map[string]string) (packagePath
 			libPath := strings.TrimPrefix(path, filepath.Join(goenv.Get("TINYGOROOT"), "lib")+string(os.PathSeparator))
 			parts := strings.SplitN(libPath, string(os.PathSeparator), 2)
 			packagePath = "C " + parts[0]
-			if len(parts) > 1 {
+			filename = parts[1]
-				filename = parts[1]
-			} else {
-				filename = parts[0]
-			}
 		} else if prefix := filepath.Join(goenv.Get("TINYGOROOT"), "llvm-project", "compiler-rt"); strings.HasPrefix(path, prefix) {
 			packagePath = "C compiler-rt"
 			filename = strings.TrimPrefix(path, prefix+string(os.PathSeparator))

builder/sizes_test.go

@@ -42,9 +42,9 @@ func TestBinarySize(t *testing.T) {
 	// This is a small number of very diverse targets that we want to test.
 	tests := []sizeTest{
 		// microcontrollers
-		{"hifive1b", "examples/echo", 3680, 280, 0, 2252},
+		{"hifive1b", "examples/echo", 3668, 280, 0, 2244},
 		{"microbit", "examples/serial", 2694, 342, 8, 2248},
-		{"wioterminal", "examples/pininterrupt", 7074, 1510, 120, 7248},
+		{"wioterminal", "examples/pininterrupt", 6833, 1491, 120, 6888},
 
 		// TODO: also check wasm. Right now this is difficult, because
 		// wasm binaries are run through wasm-opt and therefore the

builder/tools-builtin.go

@@ -28,7 +28,7 @@ func RunTool(tool string, args ...string) error {
 	var cflag *C.char
 	buf := C.calloc(C.size_t(len(args)), C.size_t(unsafe.Sizeof(cflag)))
 	defer C.free(buf)
-	cflags := unsafe.Slice((**C.char)(buf), len(args))
+	cflags := (*[1 << 10]*C.char)(unsafe.Pointer(buf))[:len(args):len(args)]
 	for i, flag := range args {
 		cflag := C.CString(flag)
 		cflags[i] = cflag

builder/tools.go

@@ -122,16 +122,12 @@ func parseLLDErrors(text string) error {
 					parsedError = true
 					line, _ := strconv.Atoi(matches[3])
 					// TODO: detect common mistakes like -gc=none?
-					msg := "linker could not find symbol " + symbolName
-					if symbolName == "runtime.alloc_noheap" {
-						msg = "object allocated on the heap in //go:noheap function"
-					}
 					linkErrors = append(linkErrors, scanner.Error{
 						Pos: token.Position{
 							Filename: matches[2],
 							Line:     line,
 						},
-						Msg: msg,
+						Msg: "linker could not find symbol " + symbolName,
 					})
 				}
 			}

cgo/libclang.go

@@ -130,7 +130,7 @@ func (f *cgoFile) readNames(fragment string, cflags []string, filename string, c
 	// convert Go slice of strings to C array of strings.
 	cmdargsC := C.malloc(C.size_t(len(cflags)) * C.size_t(unsafe.Sizeof(uintptr(0))))
 	defer C.free(cmdargsC)
-	cmdargs := unsafe.Slice((**C.char)(cmdargsC), len(cflags))
+	cmdargs := (*[1 << 16]*C.char)(cmdargsC)
 	for i, cflag := range cflags {
 		s := C.CString(cflag)
 		cmdargs[i] = s
@@ -190,7 +190,7 @@ func (f *cgoFile) readNames(fragment string, cflags []string, filename string, c
 			// Sanity check. This should (hopefully) never trigger.
 			panic("libclang: file contents was not loaded")
 		}
-		data := unsafe.Slice((*byte)(unsafe.Pointer(rawData)), size)
+		data := (*[1 << 24]byte)(unsafe.Pointer(rawData))[:size]
 
 		// Hash the contents if it isn't hashed yet.
 		if _, ok := f.visitedFiles[path]; !ok {
@@ -624,7 +624,7 @@ func (p *cgoPackage) getClangLocationPosition(location C.CXSourceLocation, tu C.
 		// now by reading the file from libclang.
 		var size C.size_t
 		sourcePtr := C.clang_getFileContents(tu, file, &size)
-		source := unsafe.Slice((*byte)(unsafe.Pointer(sourcePtr)), size)
+		source := ((*[1 << 28]byte)(unsafe.Pointer(sourcePtr)))[:size:size]
 		lines := []int{0}
 		for i := 0; i < len(source)-1; i++ {
 			if source[i] == '\n' {

cgo/libclang_config_llvm19.go

@@ -3,7 +3,7 @@
 package cgo
 
 /*
-#cgo linux        CFLAGS:  -I/usr/include/llvm-19 -I/usr/include/llvm-c-19 -I/usr/lib/llvm-19/include -I/usr/lib64/llvm19/include
+#cgo linux        CFLAGS:  -I/usr/include/llvm-19 -I/usr/include/llvm-c-19 -I/usr/lib/llvm-19/include
 #cgo darwin,amd64 CFLAGS:  -I/usr/local/opt/llvm@19/include
 #cgo darwin,arm64 CFLAGS:  -I/opt/homebrew/opt/llvm@19/include
 #cgo freebsd      CFLAGS:  -I/usr/local/llvm19/include

cgo/libclang_config_llvm20.go

@@ -3,7 +3,7 @@
 package cgo
 
 /*
-#cgo linux        CFLAGS:  -I/usr/include/llvm-20 -I/usr/include/llvm-c-20 -I/usr/lib/llvm-20/include -I/usr/lib64/llvm20/include
+#cgo linux        CFLAGS:  -I/usr/include/llvm-20 -I/usr/include/llvm-c-20 -I/usr/lib/llvm-20/include
 #cgo darwin,amd64 CFLAGS:  -I/usr/local/opt/llvm@20/include
 #cgo darwin,arm64 CFLAGS:  -I/opt/homebrew/opt/llvm@20/include
 #cgo freebsd      CFLAGS:  -I/usr/local/llvm20/include

cgo/security.go

@@ -78,7 +78,6 @@ var validCompilerFlags = []*regexp.Regexp{
 	re(`-f(no-)?(pic|PIC|pie|PIE)`),
 	re(`-f(no-)?plt`),
 	re(`-f(no-)?rtti`),
-	re(`-f(no-)?short-enums`),
 	re(`-f(no-)?split-stack`),
 	re(`-f(no-)?stack-(.+)`),
 	re(`-f(no-)?strict-aliasing`),

compileopts/config.go

@@ -536,7 +536,7 @@ func (c *Config) Programmer() (method, openocdInterface string) {
 	case "":
 		// No configuration supplied.
 		return c.Target.FlashMethod, c.Target.OpenOCDInterface
-	case "openocd", "msd", "command", "adb":
+	case "openocd", "msd", "command":
 		// The -programmer flag only specifies the flash method.
 		return c.Options.Programmer, c.Target.OpenOCDInterface
 	case "bmp":

compileopts/options.go

@@ -21,46 +21,45 @@ var (
 // usually passed from the command line, but can also be passed in environment
 // variables for example.
 type Options struct {
-	GOOS                    string // environment variable
+	GOOS            string // environment variable
-	GOARCH                  string // environment variable
+	GOARCH          string // environment variable
-	GOARM                   string // environment variable (only used with GOARCH=arm)
+	GOARM           string // environment variable (only used with GOARCH=arm)
-	GOMIPS                  string // environment variable (only used with GOARCH=mips and GOARCH=mipsle)
+	GOMIPS          string // environment variable (only used with GOARCH=mips and GOARCH=mipsle)
-	Directory               string // working dir, leave it unset to use the current working dir
+	Directory       string // working dir, leave it unset to use the current working dir
-	Target                  string
+	Target          string
-	BuildMode               string // -buildmode flag
+	BuildMode       string // -buildmode flag
-	Opt                     string
+	Opt             string
-	GC                      string
+	GC              string
-	PanicStrategy           string
+	PanicStrategy   string
-	Scheduler               string
+	Scheduler       string
-	StackSize               uint64 // goroutine stack size (if none could be automatically determined)
+	StackSize       uint64 // goroutine stack size (if none could be automatically determined)
-	Serial                  string
+	Serial          string
-	Work                    bool // -work flag to print temporary build directory
+	Work            bool // -work flag to print temporary build directory
-	InterpTimeout           time.Duration
+	InterpTimeout   time.Duration
-	InterpMaxLoopIterations int
+	PrintIR         bool
-	PrintIR                 bool
+	DumpSSA         bool
-	DumpSSA                 bool
+	VerifyIR        bool
-	VerifyIR                bool
+	SkipDWARF       bool
-	SkipDWARF               bool
+	PrintCommands   func(cmd string, args ...string) `json:"-"`
-	PrintCommands           func(cmd string, args ...string) `json:"-"`
+	Semaphore       chan struct{}                    `json:"-"` // -p flag controls cap
-	Semaphore               chan struct{}                    `json:"-"` // -p flag controls cap
+	Debug           bool
-	Debug                   bool
+	Nobounds        bool
-	Nobounds                bool
+	PrintSizes      string
-	PrintSizes              string
+	PrintAllocs     *regexp.Regexp // regexp string
-	PrintAllocs             *regexp.Regexp // regexp string
+	PrintStacks     bool
-	PrintStacks             bool
+	Tags            []string
-	Tags                    []string
+	GlobalValues    map[string]map[string]string // map[pkgpath]map[varname]value
-	GlobalValues            map[string]map[string]string // map[pkgpath]map[varname]value
+	TestConfig      TestConfig
-	TestConfig              TestConfig
+	Programmer      string
-	Programmer              string
+	OpenOCDCommands []string
-	OpenOCDCommands         []string
+	LLVMFeatures    string
-	LLVMFeatures            string
+	Monitor         bool
-	Monitor                 bool
+	BaudRate        int
-	BaudRate                int
+	Timeout         time.Duration
-	Timeout                 time.Duration
+	WITPackage      string // pass through to wasm-tools component embed invocation
-	WITPackage              string // pass through to wasm-tools component embed invocation
+	WITWorld        string // pass through to wasm-tools component embed -w option
-	WITWorld                string // pass through to wasm-tools component embed -w option
+	ExtLDFlags      []string
-	ExtLDFlags              []string
+	GoCompatibility bool // enable to check for Go version compatibility
-	GoCompatibility         bool // enable to check for Go version compatibility
 }
 
 // Verify performs a validation on the given options, raising an error if options are not valid.

compileopts/target.go

@@ -24,7 +24,6 @@ import (
 // https://github.com/shepmaster/rust-arduino-blink-led-no-core-with-cargo/blob/master/blink/arduino.json
 type TargetSpec struct {
 	Inherits         []string `json:"inherits,omitempty"`
-	InheritableOnly  bool     `json:"inheritable-only"` // this target is only meant to be inherited from, not used directly
 	Triple           string   `json:"llvm-target,omitempty"`
 	CPU              string   `json:"cpu,omitempty"`
 	ABI              string   `json:"target-abi,omitempty"` // roughly equivalent to -mabi= flag
@@ -64,9 +63,6 @@ type TargetSpec struct {
 	OpenOCDCommands  []string `json:"openocd-commands,omitempty"`
 	OpenOCDVerify    *bool    `json:"openocd-verify,omitempty"` // enable verify when flashing with openocd
 	JLinkDevice      string   `json:"jlink-device,omitempty"`
-	ADBPreCommands   []string `json:"adb-pre-commands,omitempty"`
-	ADBPushRemote    string   `json:"adb-push-remote,omitempty"`
-	ADBPostCommands  []string `json:"adb-post-commands,omitempty"`
 	CodeModel        string   `json:"code-model,omitempty"`
 	RelocationModel  string   `json:"relocation-model,omitempty"`
 	WITPackage       string   `json:"wit-package,omitempty"`
@@ -152,11 +148,6 @@ func (spec *TargetSpec) loadFromGivenStr(str string) error {
 
 // resolveInherits loads inherited targets, recursively.
 func (spec *TargetSpec) resolveInherits() error {
-	// Save InheritableOnly before resolving, since it must not propagate
-	// from parent to child (a board target should not become inheritable-only
-	// just because its parent processor target is).
-	inheritableOnly := spec.InheritableOnly
-
 	// First create a new spec with all the inherited properties.
 	newSpec := &TargetSpec{}
 	for _, name := range spec.Inherits {
@@ -182,9 +173,6 @@ func (spec *TargetSpec) resolveInherits() error {
 	}
 	*spec = *newSpec
 
-	// Restore InheritableOnly from the original spec, not from parents.
-	spec.InheritableOnly = inheritableOnly
-
 	return nil
 }
 
@@ -251,17 +239,10 @@ func GetTargetSpecs() (map[string]*TargetSpec, error) {
 			continue
 		}
 		path := filepath.Join(dir, entry.Name())
-
 		spec, err := LoadTarget(&Options{Target: path})
 		if err != nil {
 			return nil, fmt.Errorf("could not list target: %w", err)
 		}
-
-		if spec.InheritableOnly {
-			// Skip targets that are only meant to be inherited from, not used directly.
-			continue
-		}
-
 		if spec.FlashMethod == "" && spec.FlashCommand == "" && spec.Emulator == "" {
 			// This doesn't look like a regular target file, but rather like
 			// a parent target (such as targets/cortex-m.json).

compileopts/target_test.go

@@ -23,37 +23,6 @@ func TestLoadTarget(t *testing.T) {
 	}
 }
 
-func TestGetTargetSpecs_InheritableOnlyTargetsExcluded(t *testing.T) {
-	specs, err := GetTargetSpecs()
-	if err != nil {
-		t.Fatal("GetTargetSpecs failed:", err)
-	}
-
-	// Inheritable-only processor-level targets should not appear in the listing.
-	inheritableOnlyTargets := []string{"esp32", "esp32c3", "esp32s3", "esp8266", "rp2040", "rp2350", "rp2350b"}
-	for _, name := range inheritableOnlyTargets {
-		if _, ok := specs[name]; ok {
-			t.Errorf("inheritable-only target %q should not appear in GetTargetSpecs", name)
-		}
-	}
-
-	// Board targets that inherit from inheritable-only targets should still appear.
-	boardTargets := []string{"esp32-coreboard-v2", "pico"}
-	for _, name := range boardTargets {
-		if _, ok := specs[name]; !ok {
-			t.Errorf("board target %q should appear in GetTargetSpecs", name)
-		}
-	}
-}
-
-func TestLoadTarget_InheritableOnlyTargetStillLoadable(t *testing.T) {
-	// Inheritable-only targets should still be loadable directly (for building).
-	_, err := LoadTarget(&Options{Target: "esp32"})
-	if err != nil {
-		t.Errorf("LoadTarget should still load inheritable-only target esp32: %v", err)
-	}
-}
-
 func TestOverrideProperties(t *testing.T) {
 	baseAutoStackSize := true
 	base := &TargetSpec{

compiler/compiler.go

@@ -192,16 +192,6 @@ func newBuilder(c *compilerContext, irbuilder llvm.Builder, f *ssa.Function) *bu
 	}
 }
 
-// Return the runtime.alloc function variant.
-// This is normally just "alloc", but is "alloc_noheap" if the //go:noheap
-// pragma is used.
-func (b *builder) allocFunc() string {
-	if b.info.noheap {
-		return "alloc_noheap"
-	}
-	return "alloc"
-}
-
 type blockInfo struct {
 	// entry is the LLVM basic block corresponding to the start of this *ssa.Block.
 	entry llvm.BasicBlock
@@ -324,6 +314,9 @@ func CompilePackage(moduleName string, pkg *loader.Package, ssaPkg *ssa.Package,
 	// Load comments such as //go:extern on globals.
 	c.loadASTComments(pkg)
 
+	// Predeclare the runtime.alloc function, which is used by the wordpack
+	// functionality.
+	c.getFunction(c.program.ImportedPackage("runtime").Members["alloc"].(*ssa.Function))
 	if c.NeedsStackObjects {
 		// Predeclare trackPointer, which is used everywhere we use runtime.alloc.
 		c.getFunction(c.program.ImportedPackage("runtime").Members["trackPointer"].(*ssa.Function))
@@ -880,10 +873,6 @@ func (c *compilerContext) createPackage(irbuilder llvm.Builder, pkg *ssa.Package
 				// with a LLVM intrinsic.
 				continue
 			}
-			if ok := b.defineCryptoIntrinsic(); ok {
-				// Body of this function was replaced
-				continue
-			}
 			if member.Blocks == nil {
 				// Try to define this as an intrinsic function.
 				b.defineIntrinsicFunction()
@@ -1693,41 +1682,13 @@ func (b *builder) createBuiltin(argTypes []types.Type, argValues []llvm.Value, c
 	case "copy":
 		dst := argValues[0]
 		src := argValues[1]
-		// Fetch the lengths.
 		dstLen := b.CreateExtractValue(dst, 1, "copy.dstLen")
 		srcLen := b.CreateExtractValue(src, 1, "copy.srcLen")
-		// Find the minimum of the lengths.
+		dstBuf := b.CreateExtractValue(dst, 0, "copy.dstArray")
-		minFuncName := "llvm.umin.i" + strconv.Itoa(b.uintptrType.IntTypeWidth())
+		srcBuf := b.CreateExtractValue(src, 0, "copy.srcArray")
-		minFunc := b.mod.NamedFunction(minFuncName)
-		if minFunc.IsNil() {
-			fnType := llvm.FunctionType(b.uintptrType, []llvm.Type{b.uintptrType, b.uintptrType}, false)
-			minFunc = llvm.AddFunction(b.mod, minFuncName, fnType)
-		}
-		minLen := b.CreateCall(minFunc.GlobalValueType(), minFunc, []llvm.Value{dstLen, srcLen}, "copy.n")
-		// Multiply the length by the element size.
 		elemType := b.getLLVMType(argTypes[0].Underlying().(*types.Slice).Elem())
 		elemSize := llvm.ConstInt(b.uintptrType, b.targetData.TypeAllocSize(elemType), false)
-		// NOTE: This is also NSW when uintptr is int, but we can only choose one through the C API?
+		return b.createRuntimeCall("sliceCopy", []llvm.Value{dstBuf, srcBuf, dstLen, srcLen, elemSize}, "copy.n"), nil
-		size := b.CreateNUWMul(minLen, elemSize, "copy.size")
-		// Fetch the pointers.
-		dstBuf := b.CreateExtractValue(dst, 0, "copy.dstPtr")
-		srcBuf := b.CreateExtractValue(src, 0, "copy.srcPtr")
-		// Create a memcpy.
-		call := b.createMemCopy("memmove", dstBuf, srcBuf, size)
-		align := b.targetData.ABITypeAlignment(elemType)
-		if align > 1 {
-			// Apply the type's alignment to the arguments.
-			// LLVM sometimes turns constant-length moves into loads and stores.
-			// It may use this alignment for the created loads and stores.
-			alignAttr := b.ctx.CreateEnumAttribute(llvm.AttributeKindID("align"), uint64(align))
-			call.AddCallSiteAttribute(1, alignAttr)
-			call.AddCallSiteAttribute(2, alignAttr)
-		}
-		// Extend and return the copied length.
-		if b.targetData.TypeAllocSize(minLen.Type()) < b.targetData.TypeAllocSize(b.intType) {
-			minLen = b.CreateZExt(minLen, b.intType, "copy.n.zext")
-		}
-		return minLen, nil
 	case "delete":
 		m := argValues[0]
 		key := argValues[1]
@@ -1755,66 +1716,20 @@ func (b *builder) createBuiltin(argTypes []types.Type, argValues []llvm.Value, c
 		return llvmLen, nil
 	case "min", "max":
 		// min and max builtins, added in Go 1.21.
-		// Find the corresponding intrinsic name.
+		// We can simply reuse the existing binop comparison code, which has all
-		ty := argTypes[0].Underlying().(*types.Basic)
+		// the edge cases figured out already.
-		llvmType := b.getLLVMType(ty)
+		tok := token.LSS
-		info := ty.Info()
+		if callName == "max" {
-		var prefix, delimeter, typeName string
+			tok = token.GTR
-		if info&types.IsInteger != 0 {
-			// This is an integer value.
-			// Use the LLVM int min/max intrinsics.
-			prefix = "llvm.s"
-			if info&types.IsUnsigned != 0 {
-				prefix = "llvm.u"
-			}
-			delimeter = ".i"
-			typeName = strconv.Itoa(llvmType.IntTypeWidth())
-		} else {
-			switch ty.Kind() {
-			case types.String:
-				// Strings do not have an equivalent intrinsic.
-				// Implement with compares and selects.
-				tok := token.LSS
-				if callName == "max" {
-					tok = token.GTR
-				}
-				result := argValues[0]
-				typ := argTypes[0]
-				for _, arg := range argValues[1:] {
-					cmp, err := b.createBinOp(tok, typ, typ, result, arg, pos)
-					if err != nil {
-						return result, err
-					}
-					result = b.CreateSelect(cmp, result, arg, "")
-				}
-				return result, nil
-			case types.Float32:
-				typeName = "f32"
-			case types.Float64:
-				typeName = "f64"
-			default:
-				return llvm.Value{}, b.makeError(pos, "todo: min/max: unknown type")
-			}
-			// There are a few edge cases with floating point min/max:
-			// min(-0.0, +0.0) = -0.0
-			// min(NaN, number) = NaN
-			// The llvm.minimum.*/llvm.maximum.* intrinsics match this behavior.
-			// Neither Go nor LLVM defines the bit representation of resulting NaNs.
-			prefix = "llvm."
-			delimeter = "imum."
 		}
-		intrinsicName := prefix + callName + delimeter + typeName
-		// Find or create the intrinsic.
-		llvmFn := b.mod.NamedFunction(intrinsicName)
-		if llvmFn.IsNil() {
-			fnType := llvm.FunctionType(llvmType, []llvm.Type{llvmType, llvmType}, false)
-			llvmFn = llvm.AddFunction(b.mod, intrinsicName, fnType)
-		}
-		// Call the intrinsic repeatedly to merge the arguments.
-		callType := llvmFn.GlobalValueType()
 		result := argValues[0]
+		typ := argTypes[0]
 		for _, arg := range argValues[1:] {
-			result = b.CreateCall(callType, llvmFn, []llvm.Value{result, arg}, "")
+			cmp, err := b.createBinOp(tok, typ, typ, result, arg, pos)
+			if err != nil {
+				return result, err
+			}
+			result = b.CreateSelect(cmp, result, arg, "")
 		}
 		return result, nil
 	case "panic":
@@ -1987,14 +1902,10 @@ func (b *builder) createFunctionCall(instr *ssa.CallCommon) (llvm.Value, error)
 			return b.emitSV64Call(instr.Args, getPos(instr))
 		case strings.HasPrefix(name, "(device/riscv.CSR)."):
 			return b.emitCSROperation(instr)
-		case (strings.HasPrefix(name, "syscall.Syscall") || strings.HasPrefix(name, "syscall.RawSyscall") || strings.HasPrefix(name, "golang.org/x/sys/unix.Syscall") || strings.HasPrefix(name, "golang.org/x/sys/unix.RawSyscall")) && name != "syscall.SyscallN":
+		case strings.HasPrefix(name, "syscall.Syscall") || strings.HasPrefix(name, "syscall.RawSyscall") || strings.HasPrefix(name, "golang.org/x/sys/unix.Syscall") || strings.HasPrefix(name, "golang.org/x/sys/unix.RawSyscall"):
 			if b.GOOS != "darwin" {
 				return b.createSyscall(instr)
 			}
-		case name == "syscall.syscalln":
-			if b.GOOS == "windows" {
-				return b.createSyscalln(instr)
-			}
 		case strings.HasPrefix(name, "syscall.rawSyscallNoError") || strings.HasPrefix(name, "golang.org/x/sys/unix.RawSyscallNoError"):
 			return b.createRawSyscallNoError(instr)
 		case name == "runtime.supportsRecover":
@@ -2183,7 +2094,7 @@ func (b *builder) createExpr(expr ssa.Value) (llvm.Value, error) {
 			}
 			sizeValue := llvm.ConstInt(b.uintptrType, size, false)
 			layoutValue := b.createObjectLayout(typ, expr.Pos())
-			buf := b.createRuntimeCall(b.allocFunc(), []llvm.Value{sizeValue, layoutValue}, expr.Comment)
+			buf := b.createRuntimeCall("alloc", []llvm.Value{sizeValue, layoutValue}, expr.Comment)
 			align := b.targetData.ABITypeAlignment(typ)
 			buf.AddCallSiteAttribute(0, b.ctx.CreateEnumAttribute(llvm.AttributeKindID("align"), uint64(align)))
 			return buf, nil
@@ -2415,7 +2326,7 @@ func (b *builder) createExpr(expr ssa.Value) (llvm.Value, error) {
 		}
 		sliceSize := b.CreateBinOp(llvm.Mul, elemSizeValue, sliceCapCast, "makeslice.cap")
 		layoutValue := b.createObjectLayout(llvmElemType, expr.Pos())
-		slicePtr := b.createRuntimeCall(b.allocFunc(), []llvm.Value{sliceSize, layoutValue}, "makeslice.buf")
+		slicePtr := b.createRuntimeCall("alloc", []llvm.Value{sliceSize, layoutValue}, "makeslice.buf")
 		slicePtr.AddCallSiteAttribute(0, b.ctx.CreateEnumAttribute(llvm.AttributeKindID("align"), uint64(elemAlign)))
 
 		// Extend or truncate if necessary. This is safe as we've already done

compiler/compiler_test.go

@@ -50,7 +50,6 @@ func TestCompiler(t *testing.T) {
 		{"channel.go", "", ""},
 		{"gc.go", "", ""},
 		{"zeromap.go", "", ""},
-		{"generics.go", "", ""},
 	}
 	if goMinor >= 20 {
 		tests = append(tests, testCase{"go1.20.go", "", ""})

compiler/defer.go

@@ -488,7 +488,7 @@ func (b *builder) createDefer(instr *ssa.Defer) {
 		size := b.targetData.TypeAllocSize(deferredCallType)
 		sizeValue := llvm.ConstInt(b.uintptrType, size, false)
 		nilPtr := llvm.ConstNull(b.dataPtrType)
-		alloca = b.createRuntimeCall(b.allocFunc(), []llvm.Value{sizeValue, nilPtr}, "defer.alloc.call")
+		alloca = b.createRuntimeCall("alloc", []llvm.Value{sizeValue, nilPtr}, "defer.alloc.call")
 	}
 	if b.NeedsStackObjects {
 		b.trackPointer(alloca)

compiler/gc.go

@@ -99,9 +99,6 @@ func typeHasPointers(t llvm.Type) bool {
 		}
 		return false
 	case llvm.ArrayTypeKind:
-		if t.ArrayLength() == 0 {
-			return false
-		}
 		if typeHasPointers(t.ElementType()) {
 			return true
 		}

compiler/interface.go

@@ -10,7 +10,6 @@ import (
 	"fmt"
 	"go/token"
 	"go/types"
-	"sort"
 	"strconv"
 	"strings"
 
@@ -18,12 +17,6 @@ import (
 	"tinygo.org/x/go-llvm"
 )
 
-// numMethodHasMethodSet is a flag in bit 15 of the numMethod field (uint16) in
-// Named, Pointer, and Struct type descriptors. When set, an inline method set
-// is present in the type descriptor. Must match the constant in
-// src/internal/reflectlite/type.go.
-const numMethodHasMethodSet = 0x8000
-
 // Type kinds for basic types.
 // They must match the constants for the Kind type in src/reflect/type.go.
 var basicTypes = [...]uint8{
@@ -190,16 +183,6 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
 		typeFieldTypes := []*types.Var{
 			types.NewVar(token.NoPos, nil, "kind", types.Typ[types.Int8]),
 		}
-		// Compute the method set value for types that support methods.
-		var methods []*types.Func
-		for i := 0; i < ms.Len(); i++ {
-			methods = append(methods, ms.At(i).Obj().(*types.Func))
-		}
-		methodSetType := types.NewStruct([]*types.Var{
-			types.NewVar(token.NoPos, nil, "length", types.Typ[types.Uintptr]),
-			types.NewVar(token.NoPos, nil, "methods", types.NewArray(types.Typ[types.UnsafePointer], int64(len(methods)))),
-		}, nil)
-		methodSetValue := c.getMethodSetValue(methods)
 		switch typ := typ.(type) {
 		case *types.Basic:
 			typeFieldTypes = append(typeFieldTypes,
@@ -216,13 +199,6 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
 				types.NewVar(token.NoPos, nil, "ptrTo", types.Typ[types.UnsafePointer]),
 				types.NewVar(token.NoPos, nil, "underlying", types.Typ[types.UnsafePointer]),
 				types.NewVar(token.NoPos, nil, "pkgpath", types.Typ[types.UnsafePointer]),
-			)
-			if len(methods) > 0 {
-				typeFieldTypes = append(typeFieldTypes,
-					types.NewVar(token.NoPos, nil, "methods", methodSetType),
-				)
-			}
-			typeFieldTypes = append(typeFieldTypes,
 				types.NewVar(token.NoPos, nil, "name", types.NewArray(types.Typ[types.Int8], int64(len(pkgname)+1+len(name)+1))),
 			)
 		case *types.Chan:
@@ -242,11 +218,6 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
 				types.NewVar(token.NoPos, nil, "numMethods", types.Typ[types.Uint16]),
 				types.NewVar(token.NoPos, nil, "elementType", types.Typ[types.UnsafePointer]),
 			)
-			if len(methods) > 0 {
-				typeFieldTypes = append(typeFieldTypes,
-					types.NewVar(token.NoPos, nil, "methods", methodSetType),
-				)
-			}
 		case *types.Array:
 			typeFieldTypes = append(typeFieldTypes,
 				types.NewVar(token.NoPos, nil, "numMethods", types.Typ[types.Uint16]),
@@ -271,16 +242,11 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
 				types.NewVar(token.NoPos, nil, "numFields", types.Typ[types.Uint16]),
 				types.NewVar(token.NoPos, nil, "fields", types.NewArray(c.getRuntimeType("structField"), int64(typ.NumFields()))),
 			)
-			if len(methods) > 0 {
-				typeFieldTypes = append(typeFieldTypes,
-					types.NewVar(token.NoPos, nil, "methods", methodSetType),
-				)
-			}
 		case *types.Interface:
 			typeFieldTypes = append(typeFieldTypes,
 				types.NewVar(token.NoPos, nil, "ptrTo", types.Typ[types.UnsafePointer]),
-				types.NewVar(token.NoPos, nil, "methods", methodSetType),
 			)
+			// TODO: methods
 		case *types.Signature:
 			typeFieldTypes = append(typeFieldTypes,
 				types.NewVar(token.NoPos, nil, "ptrTo", types.Typ[types.UnsafePointer]),
@@ -326,24 +292,14 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
 				pkgname = pkg.Name()
 			}
 			pkgPathPtr := c.pkgPathPtr(pkgpath)
-			namedNumMethods := uint64(numMethods)
-			if namedNumMethods&numMethodHasMethodSet != 0 {
-				panic("numMethods overflow: too many exported methods on named type " + name)
-			}
-			if len(methods) > 0 {
-				namedNumMethods |= numMethodHasMethodSet
-			}
 			typeFields = []llvm.Value{
-				llvm.ConstInt(c.ctx.Int16Type(), namedNumMethods, false), // numMethods
+				llvm.ConstInt(c.ctx.Int16Type(), uint64(numMethods), false), // numMethods
-				c.getTypeCode(types.NewPointer(typ)),                     // ptrTo
+				c.getTypeCode(types.NewPointer(typ)),                        // ptrTo
-				c.getTypeCode(typ.Underlying()),                          // underlying
+				c.getTypeCode(typ.Underlying()),                             // underlying
-				pkgPathPtr,                                               // pkgpath pointer
+				pkgPathPtr,                                                  // pkgpath pointer
+				c.ctx.ConstString(pkgname+"."+name+"\x00", false),           // name
 			}
-			if len(methods) > 0 {
+			metabyte |= 1 << 5 // "named" flag
-				typeFields = append(typeFields, methodSetValue) // methods
-			}
-			typeFields = append(typeFields, c.ctx.ConstString(pkgname+"."+name+"\x00", false)) // name
-			metabyte |= 1 << 5                                                                 // "named" flag
 		case *types.Chan:
 			var dir reflectChanDir
 			switch typ.Dir() {
@@ -367,20 +323,10 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
 				c.getTypeCode(typ.Elem()),                  // elementType
 			}
 		case *types.Pointer:
-			ptrNumMethods := uint64(numMethods)
-			if ptrNumMethods&numMethodHasMethodSet != 0 {
-				panic("numMethods overflow: too many exported methods on pointer type")
-			}
-			if len(methods) > 0 {
-				ptrNumMethods |= numMethodHasMethodSet
-			}
 			typeFields = []llvm.Value{
-				llvm.ConstInt(c.ctx.Int16Type(), ptrNumMethods, false), // numMethods
+				llvm.ConstInt(c.ctx.Int16Type(), uint64(numMethods), false), // numMethods
 				c.getTypeCode(typ.Elem()),
 			}
-			if len(methods) > 0 {
-				typeFields = append(typeFields, methodSetValue)
-			}
 		case *types.Array:
 			typeFields = []llvm.Value{
 				llvm.ConstInt(c.ctx.Int16Type(), 0, false),             // numMethods
@@ -407,16 +353,9 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
 
 			llvmStructType := c.getLLVMType(typ)
 			size := c.targetData.TypeStoreSize(llvmStructType)
-			structNumMethods := uint64(numMethods)
-			if structNumMethods&numMethodHasMethodSet != 0 {
-				panic("numMethods overflow: too many exported methods on struct type")
-			}
-			if len(methods) > 0 {
-				structNumMethods |= numMethodHasMethodSet
-			}
 			typeFields = []llvm.Value{
-				llvm.ConstInt(c.ctx.Int16Type(), structNumMethods, false), // numMethods
+				llvm.ConstInt(c.ctx.Int16Type(), uint64(numMethods), false), // numMethods
-				c.getTypeCode(types.NewPointer(typ)),                      // ptrTo
+				c.getTypeCode(types.NewPointer(typ)),                        // ptrTo
 				pkgPathPtr,
 				llvm.ConstInt(c.ctx.Int32Type(), uint64(size), false),            // size
 				llvm.ConstInt(c.ctx.Int16Type(), uint64(typ.NumFields()), false), // numFields
@@ -468,14 +407,9 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
 				}))
 			}
 			typeFields = append(typeFields, llvm.ConstArray(structFieldType, fields))
-			if len(methods) > 0 {
-				typeFields = append(typeFields, methodSetValue)
-			}
 		case *types.Interface:
-			typeFields = []llvm.Value{
+			typeFields = []llvm.Value{c.getTypeCode(types.NewPointer(typ))}
-				c.getTypeCode(types.NewPointer(typ)),
+			// TODO: methods
-				methodSetValue,
-			}
 		case *types.Signature:
 			typeFields = []llvm.Value{c.getTypeCode(types.NewPointer(typ))}
 			// TODO: params, return values, etc
@@ -762,11 +696,17 @@ func (b *builder) createTypeAssert(expr *ssa.TypeAssert) llvm.Value {
 			// This type assertion always succeeds, so we can just set commaOk to true.
 			commaOk = llvm.ConstInt(b.ctx.Int1Type(), 1, true)
 		} else {
-			// Type assert on an interface type with methods.
+			// Type assert on interface type with methods.
-			// Create a call to a declared-but-not-defined function that will
+			// This is a call to an interface type assert function.
-			// be lowered by the interface lowering pass into a type-ID
+			// The interface lowering pass will define this function by filling it
-			// comparison chain.
+			// with a type switch over all concrete types that implement this
-			commaOk = b.createInterfaceTypeAssert(intf, actualTypeNum)
+			// interface, and returning whether it's one of the matched types.
+			// This is very different from how interface asserts are implemented in
+			// the main Go compiler, where the runtime checks whether the type
+			// implements each method of the interface. See:
+			// https://research.swtch.com/interfaces
+			fn := b.getInterfaceImplementsFunc(expr.AssertedType)
+			commaOk = b.CreateCall(fn.GlobalValueType(), fn, []llvm.Value{actualTypeNum}, "")
 		}
 	} else {
 		name, _ := getTypeCodeName(expr.AssertedType)
@@ -843,58 +783,20 @@ func (c *compilerContext) getMethodsString(itf *types.Interface) string {
 	return strings.Join(methods, "; ")
 }
 
-// getMethodSetValue creates the method set struct value for a list of methods.
+// getInterfaceImplementsFunc returns a declared function that works as a type
-// The struct contains a length and a sorted array of method signature pointers.
+// switch. The interface lowering pass will define this function.
-func (c *compilerContext) getMethodSetValue(methods []*types.Func) llvm.Value {
+func (c *compilerContext) getInterfaceImplementsFunc(assertedType types.Type) llvm.Value {
-	// Create a sorted list of method signature global names.
+	s, _ := getTypeCodeName(assertedType.Underlying())
-	type methodRef struct {
+	fnName := s + ".$typeassert"
-		name  string
+	llvmFn := c.mod.NamedFunction(fnName)
-		value llvm.Value
+	if llvmFn.IsNil() {
+		llvmFnType := llvm.FunctionType(c.ctx.Int1Type(), []llvm.Type{c.dataPtrType}, false)
+		llvmFn = llvm.AddFunction(c.mod, fnName, llvmFnType)
+		c.addStandardDeclaredAttributes(llvmFn)
+		methods := c.getMethodsString(assertedType.Underlying().(*types.Interface))
+		llvmFn.AddFunctionAttr(c.ctx.CreateStringAttribute("tinygo-methods", methods))
 	}
-	var refs []methodRef
+	return llvmFn
-	for _, method := range methods {
-		name := method.Name()
-		if !token.IsExported(name) {
-			name = method.Pkg().Path() + "." + name
-		}
-		s, _ := getTypeCodeName(method.Type())
-		globalName := "reflect/types.signature:" + name + ":" + s
-		value := c.mod.NamedGlobal(globalName)
-		if value.IsNil() {
-			value = llvm.AddGlobal(c.mod, c.ctx.Int8Type(), globalName)
-			value.SetInitializer(llvm.ConstNull(c.ctx.Int8Type()))
-			value.SetGlobalConstant(true)
-			value.SetLinkage(llvm.LinkOnceODRLinkage)
-			value.SetAlignment(1)
-			if c.Debug {
-				file := c.getDIFile("<Go type>")
-				diglobal := c.dibuilder.CreateGlobalVariableExpression(file, llvm.DIGlobalVariableExpression{
-					Name:        globalName,
-					File:        file,
-					Line:        1,
-					Type:        c.getDIType(types.Typ[types.Uint8]),
-					LocalToUnit: false,
-					Expr:        c.dibuilder.CreateExpression(nil),
-					AlignInBits: 8,
-				})
-				value.AddMetadata(0, diglobal)
-			}
-		}
-		refs = append(refs, methodRef{globalName, value})
-	}
-	sort.Slice(refs, func(i, j int) bool {
-		return refs[i].name < refs[j].name
-	})
-
-	var values []llvm.Value
-	for _, ref := range refs {
-		values = append(values, ref.value)
-	}
-
-	return c.ctx.ConstStruct([]llvm.Value{
-		llvm.ConstInt(c.uintptrType, uint64(len(values)), false),
-		llvm.ConstArray(c.dataPtrType, values),
-	}, false)
 }
 
 // getInvokeFunction returns the thunk to call the given interface method. The
@@ -921,24 +823,6 @@ func (c *compilerContext) getInvokeFunction(instr *ssa.CallCommon) llvm.Value {
 	return llvmFn
 }
 
-// createInterfaceTypeAssert creates a call to a declared-but-not-defined
-// $typeassert function for the given interface. This function will be defined
-// by the interface lowering pass as a type-ID comparison chain, avoiding the
-// need for runtime.typeImplementsMethodSet at compile time.
-func (b *builder) createInterfaceTypeAssert(intf *types.Interface, actualType llvm.Value) llvm.Value {
-	s, _ := getTypeCodeName(intf)
-	fnName := s + ".$typeassert"
-	llvmFn := b.mod.NamedFunction(fnName)
-	if llvmFn.IsNil() {
-		llvmFnType := llvm.FunctionType(b.ctx.Int1Type(), []llvm.Type{b.dataPtrType}, false)
-		llvmFn = llvm.AddFunction(b.mod, fnName, llvmFnType)
-		b.addStandardDeclaredAttributes(llvmFn)
-		methods := b.getMethodsString(intf)
-		llvmFn.AddFunctionAttr(b.ctx.CreateStringAttribute("tinygo-methods", methods))
-	}
-	return b.CreateCall(llvmFn.GlobalValueType(), llvmFn, []llvm.Value{actualType}, "")
-}
-
 // getInterfaceInvokeWrapper returns a wrapper for the given method so it can be
 // invoked from an interface. The wrapper takes in a pointer to the underlying
 // value, dereferences or unpacks it if necessary, and calls the real method.

compiler/intrinsics.go

@@ -50,24 +50,19 @@ func (b *builder) defineIntrinsicFunction() {
 // and will otherwise be lowered to regular libc memcpy/memmove calls.
 func (b *builder) createMemoryCopyImpl() {
 	b.createFunctionStart(true)
-	params := b.fn.Params[0:3]
+	fnName := "llvm." + b.fn.Name() + ".p0.p0.i" + strconv.Itoa(b.uintptrType.IntTypeWidth())
-	b.createMemCopy(
-		b.fn.Name(),
-		b.getValue(params[0], getPos(b.fn)),
-		b.getValue(params[1], getPos(b.fn)),
-		b.getValue(params[2], getPos(b.fn)),
-	)
-	b.CreateRetVoid()
-}
-
-func (b *builder) createMemCopy(kind string, dst, src, len llvm.Value) llvm.Value {
-	fnName := "llvm." + kind + ".p0.p0.i" + strconv.Itoa(b.uintptrType.IntTypeWidth())
 	llvmFn := b.mod.NamedFunction(fnName)
 	if llvmFn.IsNil() {
 		fnType := llvm.FunctionType(b.ctx.VoidType(), []llvm.Type{b.dataPtrType, b.dataPtrType, b.uintptrType, b.ctx.Int1Type()}, false)
 		llvmFn = llvm.AddFunction(b.mod, fnName, fnType)
 	}
-	return b.CreateCall(llvmFn.GlobalValueType(), llvmFn, []llvm.Value{dst, src, len, llvm.ConstInt(b.ctx.Int1Type(), 0, false)}, "")
+	var params []llvm.Value
+	for _, param := range b.fn.Params {
+		params = append(params, b.getValue(param, getPos(b.fn)))
+	}
+	params = append(params, llvm.ConstInt(b.ctx.Int1Type(), 0, false))
+	b.CreateCall(llvmFn.GlobalValueType(), llvmFn, params, "")
+	b.CreateRetVoid()
 }
 
 // createMemoryZeroImpl creates calls to llvm.memset.* to zero a block of
@@ -208,23 +203,6 @@ func (b *builder) defineMathOp() {
 	b.CreateRet(result)
 }
 
-func (b *builder) defineCryptoIntrinsic() bool {
-	if b.fn.Pkg.Pkg.Path() != "crypto/internal/constanttime" {
-		return false
-	}
-
-	switch b.fn.Name() {
-	case "boolToUint8":
-		b.createFunctionStart(true)
-		param := b.getValue(b.fn.Params[0], b.fn.Pos())
-		result := b.CreateZExt(param, b.ctx.Int8Type(), "")
-		b.CreateRet(result)
-		return true
-	}
-
-	return false
-}
-
 // Implement most math/bits functions.
 //
 // This implements all the functions that operate on bits. It does not yet

compiler/llvm.go

@@ -1,10 +1,10 @@
 package compiler
 
 import (
-	"encoding/binary"
 	"fmt"
 	"go/token"
 	"go/types"
+	"math/big"
 	"strings"
 
 	"github.com/tinygo-org/tinygo/compileopts"
@@ -129,9 +129,11 @@ func (b *builder) emitPointerPack(values []llvm.Value) llvm.Value {
 		// Packed data is bigger than a pointer, so allocate it on the heap.
 		sizeValue := llvm.ConstInt(b.uintptrType, size, false)
 		align := b.targetData.ABITypeAlignment(packedType)
-		packedAlloc := b.createRuntimeCall(b.allocFunc(), []llvm.Value{
+		alloc := b.mod.NamedFunction("runtime.alloc")
+		packedAlloc := b.CreateCall(alloc.GlobalValueType(), alloc, []llvm.Value{
 			sizeValue,
 			llvm.ConstNull(b.dataPtrType),
+			llvm.Undef(b.dataPtrType), // unused context parameter
 		}, "")
 		packedAlloc.AddCallSiteAttribute(0, b.ctx.CreateEnumAttribute(llvm.AttributeKindID("align"), uint64(align)))
 		if b.NeedsStackObjects {
@@ -229,12 +231,6 @@ func (c *compilerContext) makeGlobalArray(buf []byte, name string, elementType l
 //
 // For details on what's in this value, see src/runtime/gc_precise.go.
 func (c *compilerContext) createObjectLayout(t llvm.Type, pos token.Pos) llvm.Value {
-	if !typeHasPointers(t) {
-		// There are no pointers in this type, so we can simplify the layout.
-		layout := (uint64(1) << 1) | 1
-		return llvm.ConstIntToPtr(llvm.ConstInt(c.uintptrType, layout, false), c.dataPtrType)
-	}
-
 	// Use the element type for arrays. This works even for nested arrays.
 	for {
 		kind := t.TypeKind()
@@ -252,29 +248,54 @@ func (c *compilerContext) createObjectLayout(t llvm.Type, pos token.Pos) llvm.Va
 		break
 	}
 
-	// Create the pointer bitmap.
+	// Do a few checks to see whether we need to generate any object layout
+	// information at all.
 	objectSizeBytes := c.targetData.TypeAllocSize(t)
-	pointerAlignment := uint64(c.targetData.PrefTypeAlignment(c.dataPtrType))
-	bitmapLen := objectSizeBytes / pointerAlignment
-	bitmapBytes := (bitmapLen + 7) / 8
-	bitmap := make([]byte, bitmapBytes, max(bitmapBytes, 8))
-	c.buildPointerBitmap(bitmap, pointerAlignment, pos, t, 0)
-
-	// Try to encode the layout inline.
 	pointerSize := c.targetData.TypeAllocSize(c.dataPtrType)
-	pointerBits := pointerSize * 8
+	pointerAlignment := c.targetData.PrefTypeAlignment(c.dataPtrType)
-	if bitmapLen < pointerBits {
+	if objectSizeBytes < pointerSize {
-		rawMask := binary.LittleEndian.Uint64(bitmap[0:8])
+		// Too small to contain a pointer.
-		layout := rawMask*pointerBits + bitmapLen
+		layout := (uint64(1) << 1) | 1
-		layout <<= 1
+		return llvm.ConstIntToPtr(llvm.ConstInt(c.uintptrType, layout, false), c.dataPtrType)
-		layout |= 1
+	}
+	bitmap := c.getPointerBitmap(t, pos)
+	if bitmap.BitLen() == 0 {
+		// There are no pointers in this type, so we can simplify the layout.
+		// TODO: this can be done in many other cases, e.g. when allocating an
+		// array (like [4][]byte, which repeats a slice 4 times).
+		layout := (uint64(1) << 1) | 1
+		return llvm.ConstIntToPtr(llvm.ConstInt(c.uintptrType, layout, false), c.dataPtrType)
+	}
+	if objectSizeBytes%uint64(pointerAlignment) != 0 {
+		// This shouldn't happen except for packed structs, which aren't
+		// currently used.
+		c.addError(pos, "internal error: unexpected object size for object with pointer field")
+		return llvm.ConstNull(c.dataPtrType)
+	}
+	objectSizeWords := objectSizeBytes / uint64(pointerAlignment)
 
-		// Check if the layout fits.
+	pointerBits := pointerSize * 8
-		layout &= 1<<pointerBits - 1
+	var sizeFieldBits uint64
-		if (layout>>1)/pointerBits == rawMask {
+	switch pointerBits {
-			// No set bits were shifted off.
+	case 16:
-			return llvm.ConstIntToPtr(llvm.ConstInt(c.uintptrType, layout, false), c.dataPtrType)
+		sizeFieldBits = 4
-		}
+	case 32:
+		sizeFieldBits = 5
+	case 64:
+		sizeFieldBits = 6
+	default:
+		panic("unknown pointer size")
+	}
+	layoutFieldBits := pointerBits - 1 - sizeFieldBits
+
+	// Try to emit the value as an inline integer. This is possible in most
+	// cases.
+	if objectSizeWords < layoutFieldBits {
+		// If it can be stored directly in the pointer value, do so.
+		// The runtime knows that if the least significant bit of the pointer is
+		// set, the pointer contains the value itself.
+		layout := bitmap.Uint64()<<(sizeFieldBits+1) | (objectSizeWords << 1) | 1
+		return llvm.ConstIntToPtr(llvm.ConstInt(c.uintptrType, layout, false), c.dataPtrType)
 	}
 
 	// Unfortunately, the object layout is too big to fit in a pointer-sized
@@ -282,24 +303,25 @@ func (c *compilerContext) createObjectLayout(t llvm.Type, pos token.Pos) llvm.Va
 
 	// Try first whether the global already exists. All objects with a
 	// particular name have the same type, so this is possible.
-	globalName := "runtime/gc.layout:" + fmt.Sprintf("%d-%0*x", bitmapLen, (bitmapLen+15)/16, bitmap)
+	globalName := "runtime/gc.layout:" + fmt.Sprintf("%d-%0*x", objectSizeWords, (objectSizeWords+15)/16, bitmap)
 	global := c.mod.NamedGlobal(globalName)
 	if !global.IsNil() {
 		return global
 	}
 
 	// Create the global initializer.
-	bitmapByteValues := make([]llvm.Value, bitmapBytes)
+	bitmapBytes := make([]byte, int(objectSizeWords+7)/8)
-	i8 := c.ctx.Int8Type()
+	bitmap.FillBytes(bitmapBytes)
-	for i, b := range bitmap {
+	reverseBytes(bitmapBytes) // big-endian to little-endian
-		bitmapByteValues[i] = llvm.ConstInt(i8, uint64(b), false)
+	var bitmapByteValues []llvm.Value
+	for _, b := range bitmapBytes {
+		bitmapByteValues = append(bitmapByteValues, llvm.ConstInt(c.ctx.Int8Type(), uint64(b), false))
 	}
 	initializer := c.ctx.ConstStruct([]llvm.Value{
-		llvm.ConstInt(c.uintptrType, bitmapLen, false),
+		llvm.ConstInt(c.uintptrType, objectSizeWords, false),
-		llvm.ConstArray(i8, bitmapByteValues),
+		llvm.ConstArray(c.ctx.Int8Type(), bitmapByteValues),
 	}, false)
 
-	// Create the actual global.
 	global = llvm.AddGlobal(c.mod, initializer.Type(), globalName)
 	global.SetInitializer(initializer)
 	global.SetUnnamedAddr(true)
@@ -307,7 +329,6 @@ func (c *compilerContext) createObjectLayout(t llvm.Type, pos token.Pos) llvm.Va
 	global.SetLinkage(llvm.LinkOnceODRLinkage)
 	if c.targetData.PrefTypeAlignment(c.uintptrType) < 2 {
 		// AVR doesn't have alignment by default.
-		// The lowest bit must be unset to distinguish this from an inline layout.
 		global.SetAlignment(2)
 	}
 	if c.Debug && pos != token.NoPos {
@@ -339,71 +360,52 @@ func (c *compilerContext) createObjectLayout(t llvm.Type, pos token.Pos) llvm.Va
 	return global
 }
 
-// buildPointerBitmap scans the given LLVM type for pointers and sets bits in a
+// getPointerBitmap scans the given LLVM type for pointers and sets bits in a
-// bitmap at the word offset that contains a pointer. This scan is recursive.
+// bigint at the word offset that contains a pointer. This scan is recursive.
-func (c *compilerContext) buildPointerBitmap(
+func (c *compilerContext) getPointerBitmap(typ llvm.Type, pos token.Pos) *big.Int {
-	dst []byte,
+	alignment := c.targetData.PrefTypeAlignment(c.dataPtrType)
-	ptrAlign uint64,
+	switch typ.TypeKind() {
-	pos token.Pos,
-	t llvm.Type,
-	offset uint64,
-) {
-	switch t.TypeKind() {
 	case llvm.IntegerTypeKind, llvm.FloatTypeKind, llvm.DoubleTypeKind:
-		// These types do not contain pointers.
+		return big.NewInt(0)
-
 	case llvm.PointerTypeKind:
-		// Set the corresponding position in the bitmap.
+		return big.NewInt(1)
-		dst[offset/8] |= 1 << (offset % 8)
-
 	case llvm.StructTypeKind:
-		// Recurse over struct elements.
+		ptrs := big.NewInt(0)
-		for i, et := range t.StructElementTypes() {
+		for i, subtyp := range typ.StructElementTypes() {
-			eo := c.targetData.ElementOffset(t, i)
+			subptrs := c.getPointerBitmap(subtyp, pos)
-			if eo%uint64(ptrAlign) != 0 {
+			if subptrs.BitLen() == 0 {
-				if typeHasPointers(et) {
-					// This error will let the compilation fail, but by continuing
-					// the error can still easily be shown.
-					c.addError(pos, "internal error: allocated struct contains unaligned pointer")
-				}
 				continue
 			}
-			c.buildPointerBitmap(
+			offset := c.targetData.ElementOffset(typ, i)
-				dst,
+			if offset%uint64(alignment) != 0 {
-				ptrAlign,
+				// This error will let the compilation fail, but by continuing
-				pos,
+				// the error can still easily be shown.
-				et,
+				c.addError(pos, "internal error: allocated struct contains unaligned pointer")
-				offset+(eo/ptrAlign),
+				continue
-			)
-		}
-
-	case llvm.ArrayTypeKind:
-		// Recurse over array elements.
-		len := t.ArrayLength()
-		if len <= 0 {
-			return
-		}
-		et := t.ElementType()
-		elementSize := c.targetData.TypeAllocSize(et)
-		if elementSize%ptrAlign != 0 {
-			if typeHasPointers(et) {
-				// This error will let the compilation fail (but continues so that
-				// other errors can be shown).
-				c.addError(pos, "internal error: allocated array contains unaligned pointer")
 			}
-			return
+			subptrs.Lsh(subptrs, uint(offset)/uint(alignment))
+			ptrs.Or(ptrs, subptrs)
 		}
-		elementSize /= ptrAlign
+		return ptrs
-		for i := 0; i < len; i++ {
+	case llvm.ArrayTypeKind:
-			c.buildPointerBitmap(
+		subtyp := typ.ElementType()
-				dst,
+		subptrs := c.getPointerBitmap(subtyp, pos)
-				ptrAlign,
+		ptrs := big.NewInt(0)
-				pos,
+		if subptrs.BitLen() == 0 {
-				et,
+			return ptrs
-				offset+uint64(i)*elementSize,
-			)
 		}
-
+		elementSize := c.targetData.TypeAllocSize(subtyp)
+		if elementSize%uint64(alignment) != 0 {
+			// This error will let the compilation fail (but continues so that
+			// other errors can be shown).
+			c.addError(pos, "internal error: allocated array contains unaligned pointer")
+			return ptrs
+		}
+		for i := 0; i < typ.ArrayLength(); i++ {
+			ptrs.Lsh(ptrs, uint(elementSize)/uint(alignment))
+			ptrs.Or(ptrs, subptrs)
+		}
+		return ptrs
 	default:
 		// Should not happen.
 		panic("unknown LLVM type")

compiler/map.go

@@ -3,28 +3,42 @@ package compiler
 // This file emits the correct map intrinsics for map operations.
 
 import (
-	"fmt"
 	"go/token"
 	"go/types"
+
+	"github.com/tinygo-org/tinygo/src/tinygo"
 	"golang.org/x/tools/go/ssa"
 	"tinygo.org/x/go-llvm"
 )
 
-const hashArrayUnrollLimit = 4
-
 // createMakeMap creates a new map object (runtime.hashmap) by allocating and
 // initializing an appropriately sized object.
 func (b *builder) createMakeMap(expr *ssa.MakeMap) (llvm.Value, error) {
 	mapType := expr.Type().Underlying().(*types.Map)
 	keyType := mapType.Key().Underlying()
 	llvmValueType := b.getLLVMType(mapType.Elem().Underlying())
-	llvmKeyType := b.getLLVMType(keyType)
+	var llvmKeyType llvm.Type
-
+	var alg uint64
+	if t, ok := keyType.(*types.Basic); ok && t.Info()&types.IsString != 0 {
+		// String keys.
+		llvmKeyType = b.getLLVMType(keyType)
+		alg = uint64(tinygo.HashmapAlgorithmString)
+	} else if hashmapIsBinaryKey(keyType) {
+		// Trivially comparable keys.
+		llvmKeyType = b.getLLVMType(keyType)
+		alg = uint64(tinygo.HashmapAlgorithmBinary)
+	} else {
+		// All other keys. Implemented as map[interface{}]valueType for ease of
+		// implementation.
+		llvmKeyType = b.getLLVMRuntimeType("_interface")
+		alg = uint64(tinygo.HashmapAlgorithmInterface)
+	}
 	keySize := b.targetData.TypeAllocSize(llvmKeyType)
 	valueSize := b.targetData.TypeAllocSize(llvmValueType)
 	llvmKeySize := llvm.ConstInt(b.uintptrType, keySize, false)
 	llvmValueSize := llvm.ConstInt(b.uintptrType, valueSize, false)
 	sizeHint := llvm.ConstInt(b.uintptrType, 8, false)
+	algEnum := llvm.ConstInt(b.ctx.Int8Type(), alg, false)
 	if expr.Reserve != nil {
 		sizeHint = b.getValue(expr.Reserve, getPos(expr))
 		var err error
@@ -33,42 +47,10 @@ func (b *builder) createMakeMap(expr *ssa.MakeMap) (llvm.Value, error) {
 			return llvm.Value{}, err
 		}
 	}
-
+	hashmap := b.createRuntimeCall("hashmapMake", []llvm.Value{llvmKeySize, llvmValueSize, sizeHint, algEnum}, "")
-	// Resolve hash and equal functions for this key type. For string and
-	// binary key types, reference the corresponding runtime functions
-	// directly. For composite types, generate type-specific functions.
-	var hashFn, equalFn llvm.Value
-	if t, ok := keyType.(*types.Basic); ok && t.Info()&types.IsString != 0 {
-		hashFn = b.getRuntimeFunctionValue("hashmapStringPtrHash", hashmapKeyHashSignature())
-		equalFn = b.getRuntimeFunctionValue("hashmapStringEqual", hashmapKeyEqualSignature())
-	} else if hashmapIsBinaryKey(keyType) {
-		hashFn = b.getRuntimeFunctionValue("hash32", hashmapKeyHashSignature())
-		equalFn = b.getRuntimeFunctionValue("memequal", hashmapKeyEqualSignature())
-	} else {
-		fn := b.getOrGenerateKeyHashFunc(keyType)
-		hashFn = b.createFuncValue(fn, llvm.ConstNull(b.dataPtrType), hashmapKeyHashSignature())
-		fn = b.getOrGenerateKeyEqualFunc(keyType)
-		equalFn = b.createFuncValue(fn, llvm.ConstNull(b.dataPtrType), hashmapKeyEqualSignature())
-	}
-
-	hashmap := b.createRuntimeCall("hashmapMakeGeneric", []llvm.Value{
-		llvmKeySize, llvmValueSize, sizeHint,
-		hashFn, equalFn,
-	}, "")
 	return hashmap, nil
 }
 
-// getRuntimeFunctionValue returns a TinyGo function value (with nil context)
-// for the named runtime function.
-func (b *builder) getRuntimeFunctionValue(name string, sig *types.Signature) llvm.Value {
-	member := b.program.ImportedPackage("runtime").Members[name]
-	if member == nil {
-		panic("unknown runtime function: " + name)
-	}
-	_, llvmFn := b.getFunction(member.(*ssa.Function))
-	return b.createFuncValue(llvmFn, llvm.ConstNull(b.dataPtrType), sig)
-}
-
 // createMapLookup returns the value in a map. It calls a runtime function
 // depending on the map key type to load the map value and its comma-ok value.
 func (b *builder) createMapLookup(keyType, valueType types.Type, m, key llvm.Value, commaOk bool, pos token.Pos) (llvm.Value, error) {
@@ -90,23 +72,32 @@ func (b *builder) createMapLookup(keyType, valueType types.Type, m, key llvm.Val
 
 	// Do the lookup. How it is done depends on the key type.
 	var commaOkValue llvm.Value
+	origKeyType := keyType
 	keyType = keyType.Underlying()
 	if t, ok := keyType.(*types.Basic); ok && t.Info()&types.IsString != 0 {
 		// key is a string
 		params := []llvm.Value{m, key, mapValueAlloca, mapValueSize}
 		commaOkValue = b.createRuntimeCall("hashmapStringGet", params, "")
-	} else {
+	} else if hashmapIsBinaryKey(keyType) {
-		// Key stored at actual type: either binary-comparable or with
+		// key can be compared with runtime.memequal
-		// compiler-generated hash/equal.
+		// Store the key in an alloca, in the entry block to avoid dynamic stack
+		// growth.
 		mapKeyAlloca, mapKeySize := b.createTemporaryAlloca(key.Type(), "hashmap.key")
 		b.CreateStore(key, mapKeyAlloca)
+		b.zeroUndefBytes(b.getLLVMType(keyType), mapKeyAlloca)
+		// Fetch the value from the hashmap.
 		params := []llvm.Value{m, mapKeyAlloca, mapValueAlloca, mapValueSize}
-		fnName := "hashmapBinaryGet"
+		commaOkValue = b.createRuntimeCall("hashmapBinaryGet", params, "")
-		if !hashmapIsBinaryKey(keyType) {
-			fnName = "hashmapGenericGet"
-		}
-		commaOkValue = b.createRuntimeCall(fnName, params, "")
 		b.emitLifetimeEnd(mapKeyAlloca, mapKeySize)
+	} else {
+		// Not trivially comparable using memcmp. Make it an interface instead.
+		itfKey := key
+		if _, ok := keyType.(*types.Interface); !ok {
+			// Not already an interface, so convert it to an interface now.
+			itfKey = b.createMakeInterface(key, origKeyType, pos)
+		}
+		params := []llvm.Value{m, itfKey, mapValueAlloca, mapValueSize}
+		commaOkValue = b.createRuntimeCall("hashmapInterfaceGet", params, "")
 	}
 
 	// Load the resulting value from the hashmap. The value is set to the zero
@@ -129,22 +120,29 @@ func (b *builder) createMapLookup(keyType, valueType types.Type, m, key llvm.Val
 func (b *builder) createMapUpdate(keyType types.Type, m, key, value llvm.Value, pos token.Pos) {
 	valueAlloca, valueSize := b.createTemporaryAlloca(value.Type(), "hashmap.value")
 	b.CreateStore(value, valueAlloca)
+	origKeyType := keyType
 	keyType = keyType.Underlying()
 	if t, ok := keyType.(*types.Basic); ok && t.Info()&types.IsString != 0 {
 		// key is a string
 		params := []llvm.Value{m, key, valueAlloca}
 		b.createRuntimeCall("hashmapStringSet", params, "")
-	} else {
+	} else if hashmapIsBinaryKey(keyType) {
-		// Key stored at actual type.
+		// key can be compared with runtime.memequal
 		keyAlloca, keySize := b.createTemporaryAlloca(key.Type(), "hashmap.key")
 		b.CreateStore(key, keyAlloca)
-		fnName := "hashmapBinarySet"
+		b.zeroUndefBytes(b.getLLVMType(keyType), keyAlloca)
-		if !hashmapIsBinaryKey(keyType) {
-			fnName = "hashmapGenericSet"
-		}
 		params := []llvm.Value{m, keyAlloca, valueAlloca}
-		b.createRuntimeCall(fnName, params, "")
+		b.createRuntimeCall("hashmapBinarySet", params, "")
 		b.emitLifetimeEnd(keyAlloca, keySize)
+	} else {
+		// Key is not trivially comparable, so compare it as an interface instead.
+		itfKey := key
+		if _, ok := keyType.(*types.Interface); !ok {
+			// Not already an interface, so convert it to an interface first.
+			itfKey = b.createMakeInterface(key, origKeyType, pos)
+		}
+		params := []llvm.Value{m, itfKey, valueAlloca}
+		b.createRuntimeCall("hashmapInterfaceSet", params, "")
 	}
 	b.emitLifetimeEnd(valueAlloca, valueSize)
 }
@@ -152,24 +150,32 @@ func (b *builder) createMapUpdate(keyType types.Type, m, key, value llvm.Value,
 // createMapDelete deletes a key from a map by calling the appropriate runtime
 // function. It is the implementation of the Go delete() builtin.
 func (b *builder) createMapDelete(keyType types.Type, m, key llvm.Value, pos token.Pos) error {
+	origKeyType := keyType
 	keyType = keyType.Underlying()
 	if t, ok := keyType.(*types.Basic); ok && t.Info()&types.IsString != 0 {
 		// key is a string
 		params := []llvm.Value{m, key}
 		b.createRuntimeCall("hashmapStringDelete", params, "")
 		return nil
-	} else {
+	} else if hashmapIsBinaryKey(keyType) {
-		// Key stored at actual type.
 		keyAlloca, keySize := b.createTemporaryAlloca(key.Type(), "hashmap.key")
 		b.CreateStore(key, keyAlloca)
-		fnName := "hashmapBinaryDelete"
+		b.zeroUndefBytes(b.getLLVMType(keyType), keyAlloca)
-		if !hashmapIsBinaryKey(keyType) {
-			fnName = "hashmapGenericDelete"
-		}
 		params := []llvm.Value{m, keyAlloca}
-		b.createRuntimeCall(fnName, params, "")
+		b.createRuntimeCall("hashmapBinaryDelete", params, "")
 		b.emitLifetimeEnd(keyAlloca, keySize)
 		return nil
+	} else {
+		// Key is not trivially comparable, so compare it as an interface
+		// instead.
+		itfKey := key
+		if _, ok := keyType.(*types.Interface); !ok {
+			// Not already an interface, so convert it to an interface first.
+			itfKey = b.createMakeInterface(key, origKeyType, pos)
+		}
+		params := []llvm.Value{m, itfKey}
+		b.createRuntimeCall("hashmapInterfaceDelete", params, "")
+		return nil
 	}
 }
 
@@ -189,15 +195,42 @@ func (b *builder) createMapIteratorNext(rangeVal ssa.Value, llvmRangeVal, it llv
 	llvmKeyType := b.getLLVMType(keyType)
 	llvmValueType := b.getLLVMType(valueType)
 
-	// All key types are now stored at their declared type (no interface wrapping).
+	// There is a special case in which keys are stored as an interface value
+	// instead of the value they normally are. This happens for non-trivially
+	// comparable types such as float32 or some structs.
+	isKeyStoredAsInterface := false
+	if t, ok := keyType.Underlying().(*types.Basic); ok && t.Info()&types.IsString != 0 {
+		// key is a string
+	} else if hashmapIsBinaryKey(keyType) {
+		// key can be compared with runtime.memequal
+	} else {
+		// The key is stored as an interface value, and may or may not be an
+		// interface type (for example, float32 keys are stored as an interface
+		// value).
+		if _, ok := keyType.Underlying().(*types.Interface); !ok {
+			isKeyStoredAsInterface = true
+		}
+	}
+
+	// Determine the type of the key as stored in the map.
+	llvmStoredKeyType := llvmKeyType
+	if isKeyStoredAsInterface {
+		llvmStoredKeyType = b.getLLVMRuntimeType("_interface")
+	}
 
 	// Extract the key and value from the map.
-	mapKeyAlloca, mapKeySize := b.createTemporaryAlloca(llvmKeyType, "range.key")
+	mapKeyAlloca, mapKeySize := b.createTemporaryAlloca(llvmStoredKeyType, "range.key")
 	mapValueAlloca, mapValueSize := b.createTemporaryAlloca(llvmValueType, "range.value")
 	ok := b.createRuntimeCall("hashmapNext", []llvm.Value{llvmRangeVal, it, mapKeyAlloca, mapValueAlloca}, "range.next")
-	mapKey := b.CreateLoad(llvmKeyType, mapKeyAlloca, "")
+	mapKey := b.CreateLoad(llvmStoredKeyType, mapKeyAlloca, "")
 	mapValue := b.CreateLoad(llvmValueType, mapValueAlloca, "")
 
+	if isKeyStoredAsInterface {
+		// The key is stored as an interface but it isn't of interface type.
+		// Extract the underlying value.
+		mapKey = b.extractValueFromInterface(mapKey, llvmKeyType)
+	}
+
 	// End the lifetimes of the allocas, because we're done with them.
 	b.emitLifetimeEnd(mapKeyAlloca, mapKeySize)
 	b.emitLifetimeEnd(mapValueAlloca, mapValueSize)
@@ -217,9 +250,20 @@ func (b *builder) createMapIteratorNext(rangeVal ssa.Value, llvmRangeVal, it llv
 func hashmapIsBinaryKey(keyType types.Type) bool {
 	switch keyType := keyType.Underlying().(type) {
 	case *types.Basic:
-		return keyType.Info()&(types.IsBoolean|types.IsInteger) != 0 || keyType.Kind() == types.UnsafePointer
+		// TODO: unsafe.Pointer is also a binary key, but to support that we
+		// need to fix an issue with interp first (see
+		// https://github.com/tinygo-org/tinygo/pull/4898).
+		return keyType.Info()&(types.IsBoolean|types.IsInteger) != 0
 	case *types.Pointer:
 		return true
+	case *types.Struct:
+		for i := 0; i < keyType.NumFields(); i++ {
+			fieldType := keyType.Field(i).Type().Underlying()
+			if !hashmapIsBinaryKey(fieldType) {
+				return false
+			}
+		}
+		return true
 	case *types.Array:
 		return hashmapIsBinaryKey(keyType.Elem())
 	default:
@@ -227,399 +271,68 @@ func hashmapIsBinaryKey(keyType types.Type) bool {
 	}
 }
 
-// hashmapKeyHashSignature returns the Go type signature for hashmap key hash
+func (b *builder) zeroUndefBytes(llvmType llvm.Type, ptr llvm.Value) error {
-// functions: func(key unsafe.Pointer, size, seed uintptr) uint32
+	// We know that hashmapIsBinaryKey is true, so we only have to handle those types that can show up there.
-func hashmapKeyHashSignature() *types.Signature {
+	// To zero all undefined bytes, we iterate over all the fields in the type.  For each element, compute the
-	return types.NewSignatureType(nil, nil, nil,
+	// offset of that element.  If it's Basic type, there are no internal padding bytes.  For compound types, we recurse to ensure
-		types.NewTuple(
+	// we handle nested types.  Next, we determine if there are any padding bytes before the next
-			types.NewVar(token.NoPos, nil, "key", types.Typ[types.UnsafePointer]),
+	// element and zero those as well.
-			types.NewVar(token.NoPos, nil, "size", types.Typ[types.Uintptr]),
-			types.NewVar(token.NoPos, nil, "seed", types.Typ[types.Uintptr]),
-		),
-		types.NewTuple(
-			types.NewVar(token.NoPos, nil, "", types.Typ[types.Uint32]),
-		),
-		false,
-	)
-}
 
-// hashmapKeyEqualSignature returns the Go type signature for hashmap key equal
+	zero := llvm.ConstInt(b.ctx.Int32Type(), 0, false)
-// functions: func(x, y unsafe.Pointer, n uintptr) bool
-func hashmapKeyEqualSignature() *types.Signature {
-	return types.NewSignatureType(nil, nil, nil,
-		types.NewTuple(
-			types.NewVar(token.NoPos, nil, "x", types.Typ[types.UnsafePointer]),
-			types.NewVar(token.NoPos, nil, "y", types.Typ[types.UnsafePointer]),
-			types.NewVar(token.NoPos, nil, "n", types.Typ[types.Uintptr]),
-		),
-		types.NewTuple(
-			types.NewVar(token.NoPos, nil, "", types.Typ[types.Bool]),
-		),
-		false,
-	)
-}
 
-// hashmapKeyFuncName returns a canonical name for a generated hash or equal
+	switch llvmType.TypeKind() {
-// function based on the key type's underlying structure. Named types are
+	case llvm.IntegerTypeKind:
-// replaced with their underlying types so that structurally identical key
+		// no padding bytes
-// types (e.g., struct{i1; str1} and struct{i2; str2} where both i1, i2 are
+		return nil
-// int and str1, str2 are string) share the same generated function.
+	case llvm.PointerTypeKind:
-func hashmapKeyFuncName(prefix string, keyType types.Type) string {
+		// mo padding bytes
-	return prefix + "." + hashmapCanonicalTypeName(keyType)
+		return nil
-}
+	case llvm.ArrayTypeKind:
+		llvmArrayType := llvmType
+		llvmElemType := llvmType.ElementType()
 
-// hashmapCanonicalTypeName returns a string representation of the hash/equal
+		for i := 0; i < llvmArrayType.ArrayLength(); i++ {
-// operations needed for a type, stripping named types where the operation does
+			idx := llvm.ConstInt(b.uintptrType, uint64(i), false)
-// not depend on the name. Pointer and channel names do not include the element
+			elemPtr := b.CreateInBoundsGEP(llvmArrayType, ptr, []llvm.Value{zero, idx}, "")
-// type because their hash/equal operations only use the pointer word.
+
-func hashmapCanonicalTypeName(t types.Type) string {
+			// zero any padding bytes in this element
-	switch t := t.Underlying().(type) {
+			b.zeroUndefBytes(llvmElemType, elemPtr)
-	case *types.Basic:
-		return t.Name()
-	case *types.Pointer:
-		return "*"
-	case *types.Chan:
-		switch t.Dir() {
-		case types.SendRecv:
-			return "chan"
-		case types.SendOnly:
-			return "chan<-"
-		case types.RecvOnly:
-			return "<-chan"
 		}
-	case *types.Interface:
-		if t.NumMethods() == 0 {
-			return "interface{}"
-		}
-		return t.String()
-	case *types.Struct:
-		s := "struct{"
-		for i := 0; i < t.NumFields(); i++ {
-			if i > 0 {
-				s += "; "
-			}
-			s += hashmapCanonicalTypeName(t.Field(i).Type())
-		}
-		return s + "}"
-	case *types.Array:
-		return fmt.Sprintf("[%d]%s", t.Len(), hashmapCanonicalTypeName(t.Elem()))
-	}
-	return t.String()
-}
 
-// getOrGenerateKeyHashFunc returns an LLVM function that computes the hash
+	case llvm.StructTypeKind:
-// of a key of the given type. The function is generated on first call and
+		llvmStructType := llvmType
-// cached in the module.
+		numFields := llvmStructType.StructElementTypesCount()
-func (b *builder) getOrGenerateKeyHashFunc(keyType types.Type) llvm.Value {
+		llvmElementTypes := llvmStructType.StructElementTypes()
-	name := hashmapKeyFuncName("hashmapKeyHash", keyType)
-	if fn := b.mod.NamedFunction(name); !fn.IsNil() {
-		return fn
-	}
 
-	// Create the LLVM function type:
+		for i := 0; i < numFields; i++ {
-	// (key ptr, size uintptr, seed uintptr, context ptr) -> i32
-	fnType := llvm.FunctionType(b.ctx.Int32Type(), []llvm.Type{
-		b.dataPtrType, b.uintptrType, b.uintptrType, b.dataPtrType,
-	}, false)
-	fn := llvm.AddFunction(b.mod, name, fnType)
-	fn.SetLinkage(llvm.LinkOnceODRLinkage)
-	fn.SetUnnamedAddr(true)
-	b.addStandardAttributes(fn)
-
-	// Generate the function body.
-	savedBlock := b.GetInsertBlock()
-	defer b.SetInsertPointAtEnd(savedBlock)
-
-	entry := b.ctx.AddBasicBlock(fn, "entry")
-	b.SetInsertPointAtEnd(entry)
-
-	keyPtr := fn.Param(0)
-	seed := fn.Param(2)
-	llvmKeyType := b.getLLVMType(keyType)
-	hash := b.generateKeyHash(keyType, llvmKeyType, keyPtr, seed)
-	b.CreateRet(hash)
-
-	return fn
-}
-
-// getOrGenerateKeyEqualFunc returns an LLVM function that compares two keys
-// of the given type for equality. The function is generated on first call
-// and cached in the module.
-func (b *builder) getOrGenerateKeyEqualFunc(keyType types.Type) llvm.Value {
-	name := hashmapKeyFuncName("hashmapKeyEqual", keyType)
-	if fn := b.mod.NamedFunction(name); !fn.IsNil() {
-		return fn
-	}
-
-	// Create the LLVM function type:
-	// (x ptr, y ptr, n uintptr, context ptr) -> i1
-	fnType := llvm.FunctionType(b.ctx.Int1Type(), []llvm.Type{
-		b.dataPtrType, b.dataPtrType, b.uintptrType, b.dataPtrType,
-	}, false)
-	fn := llvm.AddFunction(b.mod, name, fnType)
-	fn.SetLinkage(llvm.LinkOnceODRLinkage)
-	fn.SetUnnamedAddr(true)
-	b.addStandardAttributes(fn)
-
-	// Generate the function body.
-	savedBlock := b.GetInsertBlock()
-	defer b.SetInsertPointAtEnd(savedBlock)
-
-	entry := b.ctx.AddBasicBlock(fn, "entry")
-	b.SetInsertPointAtEnd(entry)
-
-	xPtr := fn.Param(0)
-	yPtr := fn.Param(1)
-	llvmKeyType := b.getLLVMType(keyType)
-	result := b.generateKeyEqual(keyType, llvmKeyType, xPtr, yPtr, fn)
-	b.CreateRet(result)
-
-	return fn
-}
-
-// generateKeyHash generates IR that hashes a key value. Returns the i32 hash.
-func (b *builder) generateKeyHash(keyType types.Type, llvmKeyType llvm.Type, keyPtr llvm.Value, seed llvm.Value) llvm.Value {
-	switch keyType := keyType.Underlying().(type) {
-	case *types.Basic:
-		if keyType.Info()&types.IsString != 0 {
-			// Hash the string contents. The size parameter is unused by
-			// hashmapStringPtrHash (it dereferences the string header to
-			// get the actual length), but we pass it for signature
-			// consistency with other hash functions.
-			size := llvm.ConstInt(b.uintptrType, b.targetData.TypeAllocSize(llvmKeyType), false)
-			return b.createRuntimeCall("hashmapStringPtrHash", []llvm.Value{keyPtr, size, seed}, "hash")
-		}
-		if keyType.Info()&types.IsFloat != 0 {
-			// Float hash: normalizes -0 to +0 before hashing.
-			if keyType.Kind() == types.Float32 {
-				return b.createRuntimeCall("hashmapFloat32Hash", []llvm.Value{keyPtr, seed}, "hash")
-			}
-			return b.createRuntimeCall("hashmapFloat64Hash", []llvm.Value{keyPtr, seed}, "hash")
-		}
-		if keyType.Info()&types.IsComplex != 0 {
-			// Complex hash: hash real and imaginary parts as floats.
-			if keyType.Kind() == types.Complex64 {
-				realPtr := keyPtr
-				imagPtr := b.CreateInBoundsGEP(b.ctx.Int8Type(), keyPtr, []llvm.Value{
-					llvm.ConstInt(b.uintptrType, 4, false),
-				}, "")
-				realHash := b.createRuntimeCall("hashmapFloat32Hash", []llvm.Value{realPtr, seed}, "hash.real")
-				imagHash := b.createRuntimeCall("hashmapFloat32Hash", []llvm.Value{imagPtr, seed}, "hash.imag")
-				return b.CreateXor(realHash, imagHash, "")
-			}
-			realPtr := keyPtr
-			imagPtr := b.CreateInBoundsGEP(b.ctx.Int8Type(), keyPtr, []llvm.Value{
-				llvm.ConstInt(b.uintptrType, 8, false),
-			}, "")
-			realHash := b.createRuntimeCall("hashmapFloat64Hash", []llvm.Value{realPtr, seed}, "hash.real")
-			imagHash := b.createRuntimeCall("hashmapFloat64Hash", []llvm.Value{imagPtr, seed}, "hash.imag")
-			return b.CreateXor(realHash, imagHash, "")
-		}
-		// Integer/boolean: hash the raw bytes.
-		size := llvm.ConstInt(b.uintptrType, b.targetData.TypeAllocSize(llvmKeyType), false)
-		return b.createRuntimeCall("hash32", []llvm.Value{keyPtr, size, seed}, "hash")
-	case *types.Pointer, *types.Chan:
-		// Pointers and channels: hash as raw pointer-sized bytes.
-		size := llvm.ConstInt(b.uintptrType, b.targetData.TypeAllocSize(llvmKeyType), false)
-		return b.createRuntimeCall("hash32", []llvm.Value{keyPtr, size, seed}, "hash")
-	case *types.Interface:
-		// Interface: use runtime reflection-based hash.
-		size := llvm.ConstInt(b.uintptrType, b.targetData.TypeAllocSize(llvmKeyType), false)
-		return b.createRuntimeCall("hashmapInterfacePtrHash", []llvm.Value{keyPtr, size, seed}, "hash")
-	case *types.Struct:
-		hash := llvm.ConstInt(b.ctx.Int32Type(), 0, false)
-		zero := llvm.ConstInt(b.ctx.Int32Type(), 0, false)
-		for i := 0; i < keyType.NumFields(); i++ {
-			if keyType.Field(i).Name() == "_" {
-				continue // blank fields are ignored in Go equality
-			}
-			fieldType := keyType.Field(i).Type()
-			llvmFieldType := b.getLLVMType(fieldType)
-			if b.targetData.TypeAllocSize(llvmFieldType) == 0 {
-				continue // skip zero-sized fields
-			}
 			idx := llvm.ConstInt(b.ctx.Int32Type(), uint64(i), false)
-			fieldPtr := b.CreateInBoundsGEP(llvmKeyType, keyPtr, []llvm.Value{zero, idx}, "")
+			elemPtr := b.CreateInBoundsGEP(llvmStructType, ptr, []llvm.Value{zero, idx}, "")
-			fieldHash := b.generateKeyHash(fieldType, llvmFieldType, fieldPtr, seed)
-			hash = b.CreateXor(hash, fieldHash, "")
-		}
-		return hash
-	case *types.Array:
-		elemType := keyType.Elem()
-		llvmElemType := b.getLLVMType(elemType)
-		arrayLen := keyType.Len()
-		if hashmapIsBinaryKey(elemType) {
-			// All elements are binary-comparable; hash the entire array as raw bytes.
-			size := llvm.ConstInt(b.uintptrType, b.targetData.TypeAllocSize(llvmKeyType), false)
-			return b.createRuntimeCall("hash32", []llvm.Value{keyPtr, size, seed}, "hash")
-		}
-		if arrayLen == 0 {
-			return llvm.ConstInt(b.ctx.Int32Type(), 0, false)
-		}
-		if arrayLen <= hashArrayUnrollLimit {
-			hash := llvm.ConstInt(b.ctx.Int32Type(), 0, false)
-			zero := llvm.ConstInt(b.ctx.Int32Type(), 0, false)
-			for i := 0; i < int(arrayLen); i++ {
-				idx := llvm.ConstInt(b.uintptrType, uint64(i), false)
-				elemPtr := b.CreateInBoundsGEP(llvmKeyType, keyPtr, []llvm.Value{zero, idx}, "")
-				elemHash := b.generateKeyHash(elemType, llvmElemType, elemPtr, seed)
-				hash = b.CreateXor(hash, elemHash, "")
-			}
-			return hash
-		}
-		initHash := llvm.ConstInt(b.ctx.Int32Type(), 0, false)
-		zero := llvm.ConstInt(b.ctx.Int32Type(), 0, false)
 
-		loopEntry := b.GetInsertBlock()
+			// zero any padding bytes in this field
-		loopBody := b.ctx.AddBasicBlock(loopEntry.Parent(), "hash.array.body")
+			llvmElemType := llvmElementTypes[i]
-		loopDone := b.ctx.AddBasicBlock(loopEntry.Parent(), "hash.array.done")
+			b.zeroUndefBytes(llvmElemType, elemPtr)
 
-		b.CreateBr(loopBody)
+			// zero any padding bytes before the next field, if any
-		b.SetInsertPointAtEnd(loopBody)
+			offset := b.targetData.ElementOffset(llvmStructType, i)
+			storeSize := b.targetData.TypeStoreSize(llvmElemType)
+			fieldEndOffset := offset + storeSize
 
-		phiI := b.CreatePHI(b.uintptrType, "i")
+			var nextOffset uint64
-		phiHash := b.CreatePHI(b.ctx.Int32Type(), "hash.acc")
+			if i < numFields-1 {
-
+				nextOffset = b.targetData.ElementOffset(llvmStructType, i+1)
-		elemPtr := b.CreateInBoundsGEP(llvmKeyType, keyPtr, []llvm.Value{zero, phiI}, "")
-		elemHash := b.generateKeyHash(elemType, llvmElemType, elemPtr, seed)
-		newHash := b.CreateXor(phiHash, elemHash, "")
-		nextI := b.CreateAdd(phiI, llvm.ConstInt(b.uintptrType, 1, false), "")
-		cond := b.CreateICmp(llvm.IntULT, nextI, llvm.ConstInt(b.uintptrType, uint64(arrayLen), false), "")
-		b.CreateCondBr(cond, loopBody, loopDone)
-
-		bodyEnd := b.GetInsertBlock()
-		phiI.AddIncoming([]llvm.Value{llvm.ConstInt(b.uintptrType, 0, false), nextI},
-			[]llvm.BasicBlock{loopEntry, bodyEnd})
-		phiHash.AddIncoming([]llvm.Value{initHash, newHash},
-			[]llvm.BasicBlock{loopEntry, bodyEnd})
-
-		b.SetInsertPointAtEnd(loopDone)
-		return newHash
-	default:
-		panic(fmt.Sprintf("unhandled key type for hash generation: %T", keyType))
-	}
-}
-
-// generateKeyEqual generates IR that compares two key values for equality.
-// Returns an i1 result.
-func (b *builder) generateKeyEqual(keyType types.Type, llvmKeyType llvm.Type, xPtr, yPtr llvm.Value, fn llvm.Value) llvm.Value {
-	switch keyType := keyType.Underlying().(type) {
-	case *types.Basic:
-		if keyType.Info()&types.IsString != 0 {
-			// Compare strings: load both string headers and compare.
-			xStr := b.CreateLoad(llvmKeyType, xPtr, "x.str")
-			yStr := b.CreateLoad(llvmKeyType, yPtr, "y.str")
-			return b.createRuntimeCall("stringEqual", []llvm.Value{xStr, yStr}, "eq")
-		}
-		if keyType.Info()&types.IsFloat != 0 {
-			// Float equality: fcmp oeq handles -0==+0 (true) and NaN==NaN (false).
-			xVal := b.CreateLoad(llvmKeyType, xPtr, "x.float")
-			yVal := b.CreateLoad(llvmKeyType, yPtr, "y.float")
-			return b.CreateFCmp(llvm.FloatOEQ, xVal, yVal, "eq")
-		}
-		if keyType.Info()&types.IsComplex != 0 {
-			// Complex equality: both real and imaginary parts must be equal.
-			var floatType llvm.Type
-			if keyType.Kind() == types.Complex64 {
-				floatType = b.ctx.FloatType()
 			} else {
-				floatType = b.ctx.DoubleType()
+				// Last field?  Next offset is the total size of the allocate struct.
+				nextOffset = b.targetData.TypeAllocSize(llvmStructType)
 			}
-			floatSize := b.targetData.TypeAllocSize(floatType)
+
-			imagOffset := llvm.ConstInt(b.uintptrType, floatSize, false)
+			if fieldEndOffset != nextOffset {
-			// Real parts
+				n := llvm.ConstInt(b.uintptrType, nextOffset-fieldEndOffset, false)
-			xReal := b.CreateLoad(floatType, xPtr, "x.real")
+				llvmStoreSize := llvm.ConstInt(b.uintptrType, storeSize, false)
-			yReal := b.CreateLoad(floatType, yPtr, "y.real")
+				paddingStart := b.CreateInBoundsGEP(b.ctx.Int8Type(), elemPtr, []llvm.Value{llvmStoreSize}, "")
-			realEq := b.CreateFCmp(llvm.FloatOEQ, xReal, yReal, "eq.real")
+				b.createRuntimeCall("memzero", []llvm.Value{paddingStart, n}, "")
-			// Imaginary parts
-			xImagPtr := b.CreateInBoundsGEP(b.ctx.Int8Type(), xPtr, []llvm.Value{imagOffset}, "")
-			yImagPtr := b.CreateInBoundsGEP(b.ctx.Int8Type(), yPtr, []llvm.Value{imagOffset}, "")
-			xImag := b.CreateLoad(floatType, xImagPtr, "x.imag")
-			yImag := b.CreateLoad(floatType, yImagPtr, "y.imag")
-			imagEq := b.CreateFCmp(llvm.FloatOEQ, xImag, yImag, "eq.imag")
-			return b.CreateAnd(realEq, imagEq, "")
-		}
-		// Integer/boolean: compare raw bytes.
-		size := llvm.ConstInt(b.uintptrType, b.targetData.TypeAllocSize(llvmKeyType), false)
-		return b.createRuntimeCall("memequal", []llvm.Value{xPtr, yPtr, size}, "eq")
-	case *types.Pointer, *types.Chan:
-		// Pointers and channels: compare as raw pointer-sized bytes.
-		size := llvm.ConstInt(b.uintptrType, b.targetData.TypeAllocSize(llvmKeyType), false)
-		return b.createRuntimeCall("memequal", []llvm.Value{xPtr, yPtr, size}, "eq")
-	case *types.Interface:
-		// Interface: use runtime interface equality.
-		size := llvm.ConstInt(b.uintptrType, b.targetData.TypeAllocSize(llvmKeyType), false)
-		return b.createRuntimeCall("hashmapInterfaceEqual", []llvm.Value{xPtr, yPtr, size}, "eq")
-	case *types.Struct:
-		result := llvm.ConstInt(b.ctx.Int1Type(), 1, false) // start with true
-		zero := llvm.ConstInt(b.ctx.Int32Type(), 0, false)
-		for i := 0; i < keyType.NumFields(); i++ {
-			if keyType.Field(i).Name() == "_" {
-				continue // blank fields are ignored in Go equality
 			}
-			fieldType := keyType.Field(i).Type()
-			llvmFieldType := b.getLLVMType(fieldType)
-			if b.targetData.TypeAllocSize(llvmFieldType) == 0 {
-				continue // skip zero-sized fields
-			}
-			idx := llvm.ConstInt(b.ctx.Int32Type(), uint64(i), false)
-			xFieldPtr := b.CreateInBoundsGEP(llvmKeyType, xPtr, []llvm.Value{zero, idx}, "")
-			yFieldPtr := b.CreateInBoundsGEP(llvmKeyType, yPtr, []llvm.Value{zero, idx}, "")
-			fieldEq := b.generateKeyEqual(fieldType, llvmFieldType, xFieldPtr, yFieldPtr, fn)
-			result = b.CreateAnd(result, fieldEq, "")
 		}
-		return result
-	case *types.Array:
-		elemType := keyType.Elem()
-		llvmElemType := b.getLLVMType(elemType)
-		arrayLen := keyType.Len()
-		if hashmapIsBinaryKey(elemType) {
-			// All elements are binary-comparable; compare the entire array.
-			size := llvm.ConstInt(b.uintptrType, b.targetData.TypeAllocSize(llvmKeyType), false)
-			return b.createRuntimeCall("memequal", []llvm.Value{xPtr, yPtr, size}, "eq")
-		}
-		if arrayLen == 0 {
-			return llvm.ConstInt(b.ctx.Int1Type(), 1, false)
-		}
-		if arrayLen <= hashArrayUnrollLimit {
-			result := llvm.ConstInt(b.ctx.Int1Type(), 1, false)
-			zero := llvm.ConstInt(b.ctx.Int32Type(), 0, false)
-			for i := 0; i < int(arrayLen); i++ {
-				idx := llvm.ConstInt(b.uintptrType, uint64(i), false)
-				xElemPtr := b.CreateInBoundsGEP(llvmKeyType, xPtr, []llvm.Value{zero, idx}, "")
-				yElemPtr := b.CreateInBoundsGEP(llvmKeyType, yPtr, []llvm.Value{zero, idx}, "")
-				elemEq := b.generateKeyEqual(elemType, llvmElemType, xElemPtr, yElemPtr, fn)
-				result = b.CreateAnd(result, elemEq, "")
-			}
-			return result
-		}
-		zero := llvm.ConstInt(b.ctx.Int32Type(), 0, false)
-
-		loopEntry := b.GetInsertBlock()
-		loopBody := b.ctx.AddBasicBlock(loopEntry.Parent(), "eq.array.body")
-		loopDone := b.ctx.AddBasicBlock(loopEntry.Parent(), "eq.array.done")
-
-		b.CreateBr(loopBody)
-		b.SetInsertPointAtEnd(loopBody)
-
-		phiI := b.CreatePHI(b.uintptrType, "i")
-
-		xElemPtr := b.CreateInBoundsGEP(llvmKeyType, xPtr, []llvm.Value{zero, phiI}, "")
-		yElemPtr := b.CreateInBoundsGEP(llvmKeyType, yPtr, []llvm.Value{zero, phiI}, "")
-		elemEq := b.generateKeyEqual(elemType, llvmElemType, xElemPtr, yElemPtr, fn)
-
-		nextI := b.CreateAdd(phiI, llvm.ConstInt(b.uintptrType, 1, false), "")
-		atEnd := b.CreateICmp(llvm.IntUGE, nextI, llvm.ConstInt(b.uintptrType, uint64(arrayLen), false), "")
-		exitLoop := b.CreateOr(atEnd, b.CreateNot(elemEq, ""), "")
-		b.CreateCondBr(exitLoop, loopDone, loopBody)
-
-		bodyEnd := b.GetInsertBlock()
-		phiI.AddIncoming([]llvm.Value{llvm.ConstInt(b.uintptrType, 0, false), nextI},
-			[]llvm.BasicBlock{loopEntry, bodyEnd})
-
-		b.SetInsertPointAtEnd(loopDone)
-		return elemEq
-	default:
-		panic(fmt.Sprintf("unhandled key type for equal generation: %T", keyType))
 	}
+
+	return nil
 }

compiler/symbol.go

@@ -34,7 +34,6 @@ type functionInfo struct {
 	interrupt     bool       // go:interrupt
 	nobounds      bool       // go:nobounds
 	noescape      bool       // go:noescape
-	noheap        bool       // go:noheap
 	variadic      bool       // go:variadic (CGo only)
 	inline        inlineType // go:inline
 }
@@ -162,7 +161,7 @@ func (c *compilerContext) getFunction(fn *ssa.Function) (llvm.Type, llvm.Value)
 		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
 	case "machine.keepAliveNoEscape", "machine.unsafeNoEscape":
 		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
-	case "runtime.alloc", "runtime.alloc_noheap":
+	case "runtime.alloc":
 		// Tell the optimizer that runtime.alloc is an allocator, meaning that it
 		// returns values that are never null and never alias to an existing value.
 		for _, attrName := range []string{"noalias", "nonnull"} {
@@ -185,37 +184,18 @@ func (c *compilerContext) getFunction(fn *ssa.Function) (llvm.Type, llvm.Value)
 		// be modified.
 		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
 		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("readonly"), 0))
+	case "runtime.sliceCopy":
+		// Copying a slice won't capture any of the parameters.
+		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("writeonly"), 0))
+		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
+		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("readonly"), 0))
+		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
 	case "runtime.stringFromBytes":
 		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
 		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("readonly"), 0))
 	case "runtime.stringFromRunes":
 		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
 		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("readonly"), 0))
-	case "runtime.hashmapSet":
-		// The key (param 2) and value (param 3) pointers are only read via
-		// memcpy/hash/equal and are never captured. The indirect calls
-		// through m.keyHash and m.keyEqual function pointers prevent LLVM's
-		// functionattrs pass from inferring this automatically.
-		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
-		llvmFn.AddAttributeAtIndex(3, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
-	case "runtime.hashmapGet":
-		// The key (param 2) is read-only and never captured.
-		// The value (param 3) is written to (receives the result) but never captured.
-		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
-		llvmFn.AddAttributeAtIndex(3, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
-	case "runtime.hashmapDelete":
-		// The key (param 2) is read-only and never captured.
-		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
-	case "runtime.hashmapGenericSet":
-		// Same as hashmapBinarySet: key (param 2) and value (param 3) are
-		// not captured.
-		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
-		llvmFn.AddAttributeAtIndex(3, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
-	case "runtime.hashmapGenericGet":
-		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
-		llvmFn.AddAttributeAtIndex(3, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
-	case "runtime.hashmapGenericDelete":
-		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
 	case "runtime.trackPointer":
 		// This function is necessary for tracking pointers on the stack in a
 		// portable way (see gc_stack_portable.go). Indicate to the optimizer
@@ -477,9 +457,6 @@ func (c *compilerContext) parsePragmas(info *functionInfo, f *ssa.Function) {
 			if len(f.Blocks) == 0 {
 				info.noescape = true
 			}
-		case "//go:noheap":
-			// Ensure this function does not allocate on the heap.
-			info.noheap = true
 		case "//go:variadic":
 			// The //go:variadic pragma is emitted by the CGo preprocessing
 			// pass for C variadic functions. This includes both explicit
@@ -569,7 +546,7 @@ func (c *compilerContext) isValidWasmType(typ types.Type, site wasmSite) bool {
 		}
 		for i := 0; i < typ.NumFields(); i++ {
 			ftyp := typ.Field(i).Type()
-			if types.Unalias(ftyp).String() == "structs.HostLayout" {
+			if ftyp.String() == "structs.HostLayout" {
 				hasHostLayout = true
 				continue
 			}

compiler/syscall.go

@@ -349,130 +349,6 @@ func (b *builder) createSyscall(call *ssa.CallCommon) (llvm.Value, error) {
 	}
 }
 
-// createSyscalln emits instructions for the syscall.syscalln function on
-// Windows. This handles the variadic calling convention used in Go 1.26+:
-//
-//	func syscalln(fn, n uintptr, args ...uintptr) (r1, r2 uintptr, err Errno)
-//
-// The function generates a switch on n to dispatch to the correct fixed-argument
-// function pointer call with SetLastError(0)/GetLastError() wrapping.
-func (b *builder) createSyscalln(call *ssa.CallCommon) (llvm.Value, error) {
-	const maxArgs = 18 // Windows syscalls support up to 18 args
-
-	isI386 := strings.HasPrefix(b.Triple, "i386-")
-
-	// Get the function pointer (call.Args[0]) and n (call.Args[1]).
-	fn := b.getValue(call.Args[0], getPos(call))
-	fnPtr := b.CreateIntToPtr(fn, b.dataPtrType, "")
-	n := b.getValue(call.Args[1], getPos(call))
-
-	// Get the variadic args slice (call.Args[2]).
-	// In SSA, the variadic slice is the third argument.
-	var argsPtr llvm.Value
-	if len(call.Args) > 2 {
-		argsSlice := b.getValue(call.Args[2], getPos(call))
-		argsPtr = b.CreateExtractValue(argsSlice, 0, "args.data")
-	} else {
-		argsPtr = llvm.ConstNull(b.dataPtrType)
-	}
-
-	// Prepare SetLastError and GetLastError.
-	setLastError := b.mod.NamedFunction("SetLastError")
-	if setLastError.IsNil() {
-		llvmType := llvm.FunctionType(b.ctx.VoidType(), []llvm.Type{b.ctx.Int32Type()}, false)
-		setLastError = llvm.AddFunction(b.mod, "SetLastError", llvmType)
-		if isI386 {
-			setLastError.SetFunctionCallConv(llvm.X86StdcallCallConv)
-		}
-	}
-	getLastError := b.mod.NamedFunction("GetLastError")
-	if getLastError.IsNil() {
-		llvmType := llvm.FunctionType(b.ctx.Int32Type(), nil, false)
-		getLastError = llvm.AddFunction(b.mod, "GetLastError", llvmType)
-		if isI386 {
-			getLastError.SetFunctionCallConv(llvm.X86StdcallCallConv)
-		}
-	}
-
-	retType := b.ctx.StructType([]llvm.Type{b.uintptrType, b.uintptrType, b.uintptrType}, false)
-
-	// Create the merge block where all cases converge.
-	mergeBB := b.insertBasicBlock("syscalln.merge")
-
-	// Create the default (panic) block.
-	panicBB := b.insertBasicBlock("syscalln.panic")
-
-	// Create the switch on n.
-	sw := b.CreateSwitch(n, panicBB, maxArgs+1)
-
-	// We'll collect blocks and values for the PHI node.
-	var incomingVals []llvm.Value
-	var incomingBlocks []llvm.BasicBlock
-
-	// Generate a case for each arg count 0..maxArgs.
-	for i := 0; i <= maxArgs; i++ {
-		caseBB := b.insertBasicBlock("syscalln.case" + strconv.Itoa(i))
-		sw.AddCase(llvm.ConstInt(b.uintptrType, uint64(i), false), caseBB)
-		b.SetInsertPointAtEnd(caseBB)
-
-		// Load args[0] through args[i-1] from the slice data pointer.
-		var params []llvm.Value
-		var paramTypes []llvm.Type
-		for j := 0; j < i; j++ {
-			gep := b.CreateInBoundsGEP(b.uintptrType, argsPtr, []llvm.Value{
-				llvm.ConstInt(b.ctx.Int32Type(), uint64(j), false),
-			}, "")
-			arg := b.CreateLoad(b.uintptrType, gep, "")
-			params = append(params, arg)
-			paramTypes = append(paramTypes, b.uintptrType)
-		}
-
-		// SetLastError(0)
-		setCall := b.CreateCall(setLastError.GlobalValueType(), setLastError, []llvm.Value{llvm.ConstNull(b.ctx.Int32Type())}, "")
-		var sp llvm.Value
-		if isI386 {
-			setCall.SetInstructionCallConv(llvm.X86StdcallCallConv)
-			sp = b.readStackPointer()
-		}
-
-		// Call fn(args...)
-		fnType := llvm.FunctionType(b.uintptrType, paramTypes, false)
-		syscallResult := b.CreateCall(fnType, fnPtr, params, "")
-		if isI386 {
-			syscallResult.SetInstructionCallConv(llvm.X86StdcallCallConv)
-			b.writeStackPointer(sp)
-		}
-
-		// err = GetLastError()
-		errResult := b.CreateCall(getLastError.GlobalValueType(), getLastError, nil, "err")
-		if isI386 {
-			errResult.SetInstructionCallConv(llvm.X86StdcallCallConv)
-		}
-		if b.uintptrType != b.ctx.Int32Type() {
-			errResult = b.CreateZExt(errResult, b.uintptrType, "err.uintptr")
-		}
-
-		// Build {r1, 0, err}
-		result := llvm.ConstNull(retType)
-		result = b.CreateInsertValue(result, syscallResult, 0, "")
-		result = b.CreateInsertValue(result, errResult, 2, "")
-
-		incomingVals = append(incomingVals, result)
-		incomingBlocks = append(incomingBlocks, b.Builder.GetInsertBlock())
-		b.CreateBr(mergeBB)
-	}
-
-	// Panic block for n > maxArgs.
-	b.SetInsertPointAtEnd(panicBB)
-	b.CreateUnreachable()
-
-	// Merge block: PHI node to select the result.
-	b.SetInsertPointAtEnd(mergeBB)
-	phi := b.CreatePHI(retType, "syscalln.result")
-	phi.AddIncoming(incomingVals, incomingBlocks)
-	return phi, nil
-}
-
 // createRawSyscallNoError emits instructions for the Linux-specific
 // syscall.rawSyscallNoError function.
 func (b *builder) createRawSyscallNoError(call *ssa.CallCommon) (llvm.Value, error) {

compiler/testdata/basic.ll

@@ -10,30 +10,33 @@ target triple = "wasm32-unknown-wasi"
 @main.a = hidden global { ptr, i32, i32 } zeroinitializer, align 4
 @main.b = hidden global [2 x ptr] zeroinitializer, align 4
 
-declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #0
+; Function Attrs: allockind("alloc,zeroed") allocsize(0)
+declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #0
+
+declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #1
 
 ; Function Attrs: nounwind
-define hidden void @main.init(ptr %context) unnamed_addr #1 {
+define hidden void @main.init(ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.addInt(i32 %x, i32 %y, ptr %context) unnamed_addr #1 {
+define hidden i32 @main.addInt(i32 %x, i32 %y, ptr %context) unnamed_addr #2 {
 entry:
   %0 = add i32 %x, %y
   ret i32 %0
 }
 
 ; Function Attrs: nounwind
-define hidden i1 @main.equalInt(i32 %x, i32 %y, ptr %context) unnamed_addr #1 {
+define hidden i1 @main.equalInt(i32 %x, i32 %y, ptr %context) unnamed_addr #2 {
 entry:
   %0 = icmp eq i32 %x, %y
   ret i1 %0
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.divInt(i32 %x, i32 %y, ptr %context) unnamed_addr #1 {
+define hidden i32 @main.divInt(i32 %x, i32 %y, ptr %context) unnamed_addr #2 {
 entry:
   %0 = icmp eq i32 %y, 0
   br i1 %0, label %divbyzero.throw, label %divbyzero.next
@@ -47,14 +50,14 @@ divbyzero.next:                                   ; preds = %entry
   ret i32 %5
 
 divbyzero.throw:                                  ; preds = %entry
-  call void @runtime.divideByZeroPanic(ptr undef) #2
+  call void @runtime.divideByZeroPanic(ptr undef) #3
   unreachable
 }
 
-declare void @runtime.divideByZeroPanic(ptr) #0
+declare void @runtime.divideByZeroPanic(ptr) #1
 
 ; Function Attrs: nounwind
-define hidden i32 @main.divUint(i32 %x, i32 %y, ptr %context) unnamed_addr #1 {
+define hidden i32 @main.divUint(i32 %x, i32 %y, ptr %context) unnamed_addr #2 {
 entry:
   %0 = icmp eq i32 %y, 0
   br i1 %0, label %divbyzero.throw, label %divbyzero.next
@@ -64,12 +67,12 @@ divbyzero.next:                                   ; preds = %entry
   ret i32 %1
 
 divbyzero.throw:                                  ; preds = %entry
-  call void @runtime.divideByZeroPanic(ptr undef) #2
+  call void @runtime.divideByZeroPanic(ptr undef) #3
   unreachable
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.remInt(i32 %x, i32 %y, ptr %context) unnamed_addr #1 {
+define hidden i32 @main.remInt(i32 %x, i32 %y, ptr %context) unnamed_addr #2 {
 entry:
   %0 = icmp eq i32 %y, 0
   br i1 %0, label %divbyzero.throw, label %divbyzero.next
@@ -83,12 +86,12 @@ divbyzero.next:                                   ; preds = %entry
   ret i32 %5
 
 divbyzero.throw:                                  ; preds = %entry
-  call void @runtime.divideByZeroPanic(ptr undef) #2
+  call void @runtime.divideByZeroPanic(ptr undef) #3
   unreachable
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.remUint(i32 %x, i32 %y, ptr %context) unnamed_addr #1 {
+define hidden i32 @main.remUint(i32 %x, i32 %y, ptr %context) unnamed_addr #2 {
 entry:
   %0 = icmp eq i32 %y, 0
   br i1 %0, label %divbyzero.throw, label %divbyzero.next
@@ -98,66 +101,66 @@ divbyzero.next:                                   ; preds = %entry
   ret i32 %1
 
 divbyzero.throw:                                  ; preds = %entry
-  call void @runtime.divideByZeroPanic(ptr undef) #2
+  call void @runtime.divideByZeroPanic(ptr undef) #3
   unreachable
 }
 
 ; Function Attrs: nounwind
-define hidden i1 @main.floatEQ(float %x, float %y, ptr %context) unnamed_addr #1 {
+define hidden i1 @main.floatEQ(float %x, float %y, ptr %context) unnamed_addr #2 {
 entry:
   %0 = fcmp oeq float %x, %y
   ret i1 %0
 }
 
 ; Function Attrs: nounwind
-define hidden i1 @main.floatNE(float %x, float %y, ptr %context) unnamed_addr #1 {
+define hidden i1 @main.floatNE(float %x, float %y, ptr %context) unnamed_addr #2 {
 entry:
   %0 = fcmp une float %x, %y
   ret i1 %0
 }
 
 ; Function Attrs: nounwind
-define hidden i1 @main.floatLower(float %x, float %y, ptr %context) unnamed_addr #1 {
+define hidden i1 @main.floatLower(float %x, float %y, ptr %context) unnamed_addr #2 {
 entry:
   %0 = fcmp olt float %x, %y
   ret i1 %0
 }
 
 ; Function Attrs: nounwind
-define hidden i1 @main.floatLowerEqual(float %x, float %y, ptr %context) unnamed_addr #1 {
+define hidden i1 @main.floatLowerEqual(float %x, float %y, ptr %context) unnamed_addr #2 {
 entry:
   %0 = fcmp ole float %x, %y
   ret i1 %0
 }
 
 ; Function Attrs: nounwind
-define hidden i1 @main.floatGreater(float %x, float %y, ptr %context) unnamed_addr #1 {
+define hidden i1 @main.floatGreater(float %x, float %y, ptr %context) unnamed_addr #2 {
 entry:
   %0 = fcmp ogt float %x, %y
   ret i1 %0
 }
 
 ; Function Attrs: nounwind
-define hidden i1 @main.floatGreaterEqual(float %x, float %y, ptr %context) unnamed_addr #1 {
+define hidden i1 @main.floatGreaterEqual(float %x, float %y, ptr %context) unnamed_addr #2 {
 entry:
   %0 = fcmp oge float %x, %y
   ret i1 %0
 }
 
 ; Function Attrs: nounwind
-define hidden float @main.complexReal(float %x.r, float %x.i, ptr %context) unnamed_addr #1 {
+define hidden float @main.complexReal(float %x.r, float %x.i, ptr %context) unnamed_addr #2 {
 entry:
   ret float %x.r
 }
 
 ; Function Attrs: nounwind
-define hidden float @main.complexImag(float %x.r, float %x.i, ptr %context) unnamed_addr #1 {
+define hidden float @main.complexImag(float %x.r, float %x.i, ptr %context) unnamed_addr #2 {
 entry:
   ret float %x.i
 }
 
 ; Function Attrs: nounwind
-define hidden { float, float } @main.complexAdd(float %x.r, float %x.i, float %y.r, float %y.i, ptr %context) unnamed_addr #1 {
+define hidden { float, float } @main.complexAdd(float %x.r, float %x.i, float %y.r, float %y.i, ptr %context) unnamed_addr #2 {
 entry:
   %0 = fadd float %x.r, %y.r
   %1 = fadd float %x.i, %y.i
@@ -167,7 +170,7 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden { float, float } @main.complexSub(float %x.r, float %x.i, float %y.r, float %y.i, ptr %context) unnamed_addr #1 {
+define hidden { float, float } @main.complexSub(float %x.r, float %x.i, float %y.r, float %y.i, ptr %context) unnamed_addr #2 {
 entry:
   %0 = fsub float %x.r, %y.r
   %1 = fsub float %x.i, %y.i
@@ -177,7 +180,7 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden { float, float } @main.complexMul(float %x.r, float %x.i, float %y.r, float %y.i, ptr %context) unnamed_addr #1 {
+define hidden { float, float } @main.complexMul(float %x.r, float %x.i, float %y.r, float %y.i, ptr %context) unnamed_addr #2 {
 entry:
   %0 = fmul float %x.r, %y.r
   %1 = fmul float %x.i, %y.i
@@ -191,18 +194,19 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.foo(ptr %context) unnamed_addr #1 {
+define hidden void @main.foo(ptr %context) unnamed_addr #2 {
 entry:
   call void @"main.foo$1"(%main.kv.0 zeroinitializer, ptr undef)
   ret void
 }
 
 ; Function Attrs: nounwind
-define internal void @"main.foo$1"(%main.kv.0 %b, ptr %context) unnamed_addr #1 {
+define internal void @"main.foo$1"(%main.kv.0 %b, ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
-attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #3 = { nounwind }

compiler/testdata/channel.ll

@@ -6,73 +6,76 @@ target triple = "wasm32-unknown-wasi"
 %runtime.channelOp = type { ptr, ptr, i32, ptr }
 %runtime.chanSelectState = type { ptr, ptr }
 
-declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #0
+; Function Attrs: allockind("alloc,zeroed") allocsize(0)
+declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #0
+
+declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #1
 
 ; Function Attrs: nounwind
-define hidden void @main.init(ptr %context) unnamed_addr #1 {
+define hidden void @main.init(ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.chanIntSend(ptr dereferenceable_or_null(36) %ch, ptr %context) unnamed_addr #1 {
+define hidden void @main.chanIntSend(ptr dereferenceable_or_null(36) %ch, ptr %context) unnamed_addr #2 {
 entry:
   %chan.op = alloca %runtime.channelOp, align 8
   %chan.value = alloca i32, align 4
   call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %chan.value)
   store i32 3, ptr %chan.value, align 4
   call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %chan.op)
-  call void @runtime.chanSend(ptr %ch, ptr nonnull %chan.value, ptr nonnull %chan.op, ptr undef) #3
+  call void @runtime.chanSend(ptr %ch, ptr nonnull %chan.value, ptr nonnull %chan.op, ptr undef) #4
   call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %chan.op)
   call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %chan.value)
   ret void
 }
 
 ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
-declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2
+declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3
 
-declare void @runtime.chanSend(ptr dereferenceable_or_null(36), ptr, ptr dereferenceable_or_null(16), ptr) #0
+declare void @runtime.chanSend(ptr dereferenceable_or_null(36), ptr, ptr dereferenceable_or_null(16), ptr) #1
 
 ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
-declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2
+declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3
 
 ; Function Attrs: nounwind
-define hidden void @main.chanIntRecv(ptr dereferenceable_or_null(36) %ch, ptr %context) unnamed_addr #1 {
+define hidden void @main.chanIntRecv(ptr dereferenceable_or_null(36) %ch, ptr %context) unnamed_addr #2 {
 entry:
   %chan.op = alloca %runtime.channelOp, align 8
   %chan.value = alloca i32, align 4
   call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %chan.value)
   call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %chan.op)
-  %0 = call i1 @runtime.chanRecv(ptr %ch, ptr nonnull %chan.value, ptr nonnull %chan.op, ptr undef) #3
+  %0 = call i1 @runtime.chanRecv(ptr %ch, ptr nonnull %chan.value, ptr nonnull %chan.op, ptr undef) #4
   call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %chan.value)
   call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %chan.op)
   ret void
 }
 
-declare i1 @runtime.chanRecv(ptr dereferenceable_or_null(36), ptr, ptr dereferenceable_or_null(16), ptr) #0
+declare i1 @runtime.chanRecv(ptr dereferenceable_or_null(36), ptr, ptr dereferenceable_or_null(16), ptr) #1
 
 ; Function Attrs: nounwind
-define hidden void @main.chanZeroSend(ptr dereferenceable_or_null(36) %ch, ptr %context) unnamed_addr #1 {
+define hidden void @main.chanZeroSend(ptr dereferenceable_or_null(36) %ch, ptr %context) unnamed_addr #2 {
 entry:
   %chan.op = alloca %runtime.channelOp, align 8
   call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %chan.op)
-  call void @runtime.chanSend(ptr %ch, ptr null, ptr nonnull %chan.op, ptr undef) #3
+  call void @runtime.chanSend(ptr %ch, ptr null, ptr nonnull %chan.op, ptr undef) #4
   call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %chan.op)
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.chanZeroRecv(ptr dereferenceable_or_null(36) %ch, ptr %context) unnamed_addr #1 {
+define hidden void @main.chanZeroRecv(ptr dereferenceable_or_null(36) %ch, ptr %context) unnamed_addr #2 {
 entry:
   %chan.op = alloca %runtime.channelOp, align 8
   call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %chan.op)
-  %0 = call i1 @runtime.chanRecv(ptr %ch, ptr null, ptr nonnull %chan.op, ptr undef) #3
+  %0 = call i1 @runtime.chanRecv(ptr %ch, ptr null, ptr nonnull %chan.op, ptr undef) #4
   call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %chan.op)
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.selectZeroRecv(ptr dereferenceable_or_null(36) %ch1, ptr dereferenceable_or_null(36) %ch2, ptr %context) unnamed_addr #1 {
+define hidden void @main.selectZeroRecv(ptr dereferenceable_or_null(36) %ch1, ptr dereferenceable_or_null(36) %ch2, ptr %context) unnamed_addr #2 {
 entry:
   %select.states.alloca = alloca [2 x %runtime.chanSelectState], align 8
   %select.send.value = alloca i32, align 4
@@ -85,7 +88,7 @@ entry:
   store ptr %ch2, ptr %0, align 4
   %.repack3 = getelementptr inbounds nuw i8, ptr %select.states.alloca, i32 12
   store ptr null, ptr %.repack3, align 4
-  %select.result = call { i32, i1 } @runtime.chanSelect(ptr undef, ptr nonnull %select.states.alloca, i32 2, i32 2, ptr null, i32 0, i32 0, ptr undef) #3
+  %select.result = call { i32, i1 } @runtime.chanSelect(ptr undef, ptr nonnull %select.states.alloca, i32 2, i32 2, ptr null, i32 0, i32 0, ptr undef) #4
   call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %select.states.alloca)
   %1 = extractvalue { i32, i1 } %select.result, 0
   %2 = icmp eq i32 %1, 0
@@ -102,9 +105,10 @@ select.body:                                      ; preds = %select.next
   br label %select.done
 }
 
-declare { i32, i1 } @runtime.chanSelect(ptr, ptr, i32, i32, ptr, i32, i32, ptr) #0
+declare { i32, i1 } @runtime.chanSelect(ptr, ptr, i32, i32, ptr, i32, i32, ptr) #1
 
-attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #3 = { nounwind }
+attributes #3 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
+attributes #4 = { nounwind }

compiler/testdata/defer-cortex-m-qemu.ll

@@ -6,16 +6,19 @@ target triple = "thumbv7m-unknown-unknown-eabi"
 %runtime.deferFrame = type { ptr, ptr, [0 x ptr], ptr, i8, %runtime._interface }
 %runtime._interface = type { ptr, ptr }
 
+; Function Attrs: allockind("alloc,zeroed") allocsize(0)
+declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #0
+
 ; Function Attrs: nounwind
-define hidden void @main.init(ptr %context) unnamed_addr #0 {
+define hidden void @main.init(ptr %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
-declare void @main.external(ptr) #1
+declare void @main.external(ptr) #2
 
 ; Function Attrs: nounwind
-define hidden void @main.deferSimple(ptr %context) unnamed_addr #0 {
+define hidden void @main.deferSimple(ptr %context) unnamed_addr #1 {
 entry:
   %defer.alloca = alloca { i32, ptr }, align 4
   %deferPtr = alloca ptr, align 4
@@ -109,14 +112,14 @@ rundefers.end3:                                   ; preds = %rundefers.loophead6
 }
 
 ; Function Attrs: nocallback nofree nosync nounwind willreturn
-declare ptr @llvm.stacksave.p0() #2
+declare ptr @llvm.stacksave.p0() #3
 
-declare void @runtime.setupDeferFrame(ptr dereferenceable_or_null(24), ptr, ptr) #1
+declare void @runtime.setupDeferFrame(ptr dereferenceable_or_null(24), ptr, ptr) #2
 
-declare void @runtime.destroyDeferFrame(ptr dereferenceable_or_null(24), ptr) #1
+declare void @runtime.destroyDeferFrame(ptr dereferenceable_or_null(24), ptr) #2
 
 ; Function Attrs: nounwind
-define internal void @"main.deferSimple$1"(ptr %context) unnamed_addr #0 {
+define internal void @"main.deferSimple$1"(ptr %context) unnamed_addr #1 {
 entry:
   call void @runtime.printlock(ptr undef) #4
   call void @runtime.printint32(i32 3, ptr undef) #4
@@ -124,14 +127,14 @@ entry:
   ret void
 }
 
-declare void @runtime.printlock(ptr) #1
+declare void @runtime.printlock(ptr) #2
 
-declare void @runtime.printint32(i32, ptr) #1
+declare void @runtime.printint32(i32, ptr) #2
 
-declare void @runtime.printunlock(ptr) #1
+declare void @runtime.printunlock(ptr) #2
 
 ; Function Attrs: nounwind
-define hidden void @main.deferMultiple(ptr %context) unnamed_addr #0 {
+define hidden void @main.deferMultiple(ptr %context) unnamed_addr #1 {
 entry:
   %defer.alloca2 = alloca { i32, ptr }, align 4
   %defer.alloca = alloca { i32, ptr }, align 4
@@ -250,7 +253,7 @@ rundefers.end7:                                   ; preds = %rundefers.loophead1
 }
 
 ; Function Attrs: nounwind
-define internal void @"main.deferMultiple$1"(ptr %context) unnamed_addr #0 {
+define internal void @"main.deferMultiple$1"(ptr %context) unnamed_addr #1 {
 entry:
   call void @runtime.printlock(ptr undef) #4
   call void @runtime.printint32(i32 3, ptr undef) #4
@@ -259,7 +262,7 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define internal void @"main.deferMultiple$2"(ptr %context) unnamed_addr #0 {
+define internal void @"main.deferMultiple$2"(ptr %context) unnamed_addr #1 {
 entry:
   call void @runtime.printlock(ptr undef) #4
   call void @runtime.printint32(i32 5, ptr undef) #4
@@ -268,7 +271,7 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.deferInfiniteLoop(ptr %context) unnamed_addr #0 {
+define hidden void @main.deferInfiniteLoop(ptr %context) unnamed_addr #1 {
 entry:
   %deferPtr = alloca ptr, align 4
   store ptr null, ptr %deferPtr, align 4
@@ -312,11 +315,8 @@ rundefers.end:                                    ; preds = %rundefers.loophead
   br label %recover
 }
 
-; Function Attrs: allockind("alloc,zeroed") allocsize(0)
-declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #3
-
 ; Function Attrs: nounwind
-define hidden void @main.deferLoop(ptr %context) unnamed_addr #0 {
+define hidden void @main.deferLoop(ptr %context) unnamed_addr #1 {
 entry:
   %deferPtr = alloca ptr, align 4
   store ptr null, ptr %deferPtr, align 4
@@ -405,7 +405,7 @@ rundefers.end1:                                   ; preds = %rundefers.loophead4
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.deferBetweenLoops(ptr %context) unnamed_addr #0 {
+define hidden void @main.deferBetweenLoops(ptr %context) unnamed_addr #1 {
 entry:
   %defer.alloca = alloca { i32, ptr, i32 }, align 4
   %deferPtr = alloca ptr, align 4
@@ -505,9 +505,9 @@ rundefers.end4:                                   ; preds = %rundefers.loophead7
   br label %recover
 }
 
-attributes #0 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" }
-attributes #1 = { "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" }
+attributes #1 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" }
-attributes #2 = { nocallback nofree nosync nounwind willreturn }
+attributes #2 = { "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" }
-attributes #3 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" }
+attributes #3 = { nocallback nofree nosync nounwind willreturn }
 attributes #4 = { nounwind }
 attributes #5 = { nounwind returns_twice }

compiler/testdata/float.ll

@@ -3,16 +3,19 @@ source_filename = "float.go"
 target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
 target triple = "wasm32-unknown-wasi"
 
-declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #0
+; Function Attrs: allockind("alloc,zeroed") allocsize(0)
+declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #0
+
+declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #1
 
 ; Function Attrs: nounwind
-define hidden void @main.init(ptr %context) unnamed_addr #1 {
+define hidden void @main.init(ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.f32tou32(float %v, ptr %context) unnamed_addr #1 {
+define hidden i32 @main.f32tou32(float %v, ptr %context) unnamed_addr #2 {
 entry:
   %positive = fcmp oge float %v, 0.000000e+00
   %withinmax = fcmp ole float %v, 0x41EFFFFFC0000000
@@ -24,25 +27,25 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden float @main.maxu32f(ptr %context) unnamed_addr #1 {
+define hidden float @main.maxu32f(ptr %context) unnamed_addr #2 {
 entry:
   ret float 0x41F0000000000000
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.maxu32tof32(ptr %context) unnamed_addr #1 {
+define hidden i32 @main.maxu32tof32(ptr %context) unnamed_addr #2 {
 entry:
   ret i32 -1
 }
 
 ; Function Attrs: nounwind
-define hidden { i32, i32, i32, i32 } @main.inftoi32(ptr %context) unnamed_addr #1 {
+define hidden { i32, i32, i32, i32 } @main.inftoi32(ptr %context) unnamed_addr #2 {
 entry:
   ret { i32, i32, i32, i32 } { i32 -1, i32 0, i32 2147483647, i32 -2147483648 }
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.u32tof32tou32(i32 %v, ptr %context) unnamed_addr #1 {
+define hidden i32 @main.u32tof32tou32(i32 %v, ptr %context) unnamed_addr #2 {
 entry:
   %0 = uitofp i32 %v to float
   %withinmax = fcmp ole float %0, 0x41EFFFFFC0000000
@@ -52,7 +55,7 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden float @main.f32tou32tof32(float %v, ptr %context) unnamed_addr #1 {
+define hidden float @main.f32tou32tof32(float %v, ptr %context) unnamed_addr #2 {
 entry:
   %positive = fcmp oge float %v, 0.000000e+00
   %withinmax = fcmp ole float %v, 0x41EFFFFFC0000000
@@ -65,7 +68,7 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden i8 @main.f32tou8(float %v, ptr %context) unnamed_addr #1 {
+define hidden i8 @main.f32tou8(float %v, ptr %context) unnamed_addr #2 {
 entry:
   %positive = fcmp oge float %v, 0.000000e+00
   %withinmax = fcmp ole float %v, 2.550000e+02
@@ -77,7 +80,7 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden i8 @main.f32toi8(float %v, ptr %context) unnamed_addr #1 {
+define hidden i8 @main.f32toi8(float %v, ptr %context) unnamed_addr #2 {
 entry:
   %abovemin = fcmp oge float %v, -1.280000e+02
   %belowmax = fcmp ole float %v, 1.270000e+02
@@ -90,5 +93,6 @@ entry:
   ret i8 %0
 }
 
-attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }

compiler/testdata/func.ll

@@ -3,44 +3,48 @@ source_filename = "func.go"
 target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
 target triple = "wasm32-unknown-wasi"
 
-declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #0
+; Function Attrs: allockind("alloc,zeroed") allocsize(0)
+declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #0
+
+declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #1
 
 ; Function Attrs: nounwind
-define hidden void @main.init(ptr %context) unnamed_addr #1 {
+define hidden void @main.init(ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.foo(ptr %callback.context, ptr %callback.funcptr, ptr %context) unnamed_addr #1 {
+define hidden void @main.foo(ptr %callback.context, ptr %callback.funcptr, ptr %context) unnamed_addr #2 {
 entry:
   %0 = icmp eq ptr %callback.funcptr, null
   br i1 %0, label %fpcall.throw, label %fpcall.next
 
 fpcall.next:                                      ; preds = %entry
-  call void %callback.funcptr(i32 3, ptr %callback.context) #2
+  call void %callback.funcptr(i32 3, ptr %callback.context) #3
   ret void
 
 fpcall.throw:                                     ; preds = %entry
-  call void @runtime.nilPanic(ptr undef) #2
+  call void @runtime.nilPanic(ptr undef) #3
   unreachable
 }
 
-declare void @runtime.nilPanic(ptr) #0
+declare void @runtime.nilPanic(ptr) #1
 
 ; Function Attrs: nounwind
-define hidden void @main.bar(ptr %context) unnamed_addr #1 {
+define hidden void @main.bar(ptr %context) unnamed_addr #2 {
 entry:
   call void @main.foo(ptr undef, ptr nonnull @main.someFunc, ptr undef)
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.someFunc(i32 %arg0, ptr %context) unnamed_addr #1 {
+define hidden void @main.someFunc(i32 %arg0, ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
-attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #3 = { nounwind }

compiler/testdata/gc.go

@@ -24,10 +24,6 @@ var (
 		x *byte
 		y [61]uintptr
 	}
-	struct5 *struct {
-		x *byte
-		y [30]uintptr
-	}
 
 	slice1 []byte
 	slice2 []*int
@@ -62,10 +58,6 @@ func newStruct() {
 		x *byte
 		y [61]uintptr
 	})
-	struct5 = new(struct {
-		x *byte
-		y [30]uintptr
-	})
 }
 
 func newFuncValue() *func() {

compiler/testdata/gc.ll

@@ -16,25 +16,27 @@ target triple = "wasm32-unknown-wasi"
 @main.struct2 = hidden global ptr null, align 4
 @main.struct3 = hidden global ptr null, align 4
 @main.struct4 = hidden global ptr null, align 4
-@main.struct5 = hidden global ptr null, align 4
 @main.slice1 = hidden global { ptr, i32, i32 } zeroinitializer, align 4
 @main.slice2 = hidden global { ptr, i32, i32 } zeroinitializer, align 4
 @main.slice3 = hidden global { ptr, i32, i32 } zeroinitializer, align 4
-@"runtime/gc.layout:62-0100000000000020" = linkonce_odr unnamed_addr constant { i32, [8 x i8] } { i32 62, [8 x i8] c"\01\00\00\00\00\00\00 " }
+@"runtime/gc.layout:62-2000000000000001" = linkonce_odr unnamed_addr constant { i32, [8 x i8] } { i32 62, [8 x i8] c"\01\00\00\00\00\00\00 " }
-@"runtime/gc.layout:62-0100000000000000" = linkonce_odr unnamed_addr constant { i32, [8 x i8] } { i32 62, [8 x i8] c"\01\00\00\00\00\00\00\00" }
+@"runtime/gc.layout:62-0001" = linkonce_odr unnamed_addr constant { i32, [8 x i8] } { i32 62, [8 x i8] c"\01\00\00\00\00\00\00\00" }
 @"reflect/types.type:basic:complex128" = linkonce_odr constant { i8, ptr } { i8 80, ptr @"reflect/types.type:pointer:basic:complex128" }, align 4
 @"reflect/types.type:pointer:basic:complex128" = linkonce_odr constant { i8, i16, ptr } { i8 -43, i16 0, ptr @"reflect/types.type:basic:complex128" }, align 4
 
-declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #0
+; Function Attrs: allockind("alloc,zeroed") allocsize(0)
+declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #0
+
+declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #1
 
 ; Function Attrs: nounwind
-define hidden void @main.init(ptr %context) unnamed_addr #1 {
+define hidden void @main.init(ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.newScalar(ptr %context) unnamed_addr #1 {
+define hidden void @main.newScalar(ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
   %new = call align 1 dereferenceable(1) ptr @runtime.alloc(i32 1, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
@@ -52,11 +54,8 @@ entry:
   ret void
 }
 
-; Function Attrs: allockind("alloc,zeroed") allocsize(0)
-declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #2
-
 ; Function Attrs: nounwind
-define hidden void @main.newArray(ptr %context) unnamed_addr #1 {
+define hidden void @main.newArray(ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
   %new = call align 1 dereferenceable(3) ptr @runtime.alloc(i32 3, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
@@ -72,7 +71,7 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.newStruct(ptr %context) unnamed_addr #1 {
+define hidden void @main.newStruct(ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
   %new = call align 1 ptr @runtime.alloc(i32 0, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
@@ -81,20 +80,17 @@ entry:
   %new1 = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
   call void @runtime.trackPointer(ptr nonnull %new1, ptr nonnull %stackalloc, ptr undef) #3
   store ptr %new1, ptr @main.struct2, align 4
-  %new2 = call align 4 dereferenceable(248) ptr @runtime.alloc(i32 248, ptr nonnull @"runtime/gc.layout:62-0100000000000020", ptr undef) #3
+  %new2 = call align 4 dereferenceable(248) ptr @runtime.alloc(i32 248, ptr nonnull @"runtime/gc.layout:62-2000000000000001", ptr undef) #3
   call void @runtime.trackPointer(ptr nonnull %new2, ptr nonnull %stackalloc, ptr undef) #3
   store ptr %new2, ptr @main.struct3, align 4
-  %new3 = call align 4 dereferenceable(248) ptr @runtime.alloc(i32 248, ptr nonnull @"runtime/gc.layout:62-0100000000000000", ptr undef) #3
+  %new3 = call align 4 dereferenceable(248) ptr @runtime.alloc(i32 248, ptr nonnull @"runtime/gc.layout:62-0001", ptr undef) #3
   call void @runtime.trackPointer(ptr nonnull %new3, ptr nonnull %stackalloc, ptr undef) #3
   store ptr %new3, ptr @main.struct4, align 4
-  %new4 = call align 4 dereferenceable(124) ptr @runtime.alloc(i32 124, ptr nonnull inttoptr (i32 127 to ptr), ptr undef) #3
-  call void @runtime.trackPointer(ptr nonnull %new4, ptr nonnull %stackalloc, ptr undef) #3
-  store ptr %new4, ptr @main.struct5, align 4
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden ptr @main.newFuncValue(ptr %context) unnamed_addr #1 {
+define hidden ptr @main.newFuncValue(ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
   %new = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 197 to ptr), ptr undef) #3
@@ -103,7 +99,7 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.makeSlice(ptr %context) unnamed_addr #1 {
+define hidden void @main.makeSlice(ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
   %makeslice = call align 1 dereferenceable(5) ptr @runtime.alloc(i32 5, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
@@ -125,7 +121,7 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden %runtime._interface @main.makeInterface(double %v.r, double %v.i, ptr %context) unnamed_addr #1 {
+define hidden %runtime._interface @main.makeInterface(double %v.r, double %v.i, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
   %0 = call align 8 dereferenceable(16) ptr @runtime.alloc(i32 16, ptr null, ptr undef) #3
@@ -139,7 +135,7 @@ entry:
   ret %runtime._interface %1
 }
 
-attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
 attributes #3 = { nounwind }

compiler/testdata/generics.ll

@@ -1,78 +1,144 @@
 ; ModuleID = 'generics.go'
 source_filename = "generics.go"
-target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
+target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"
 target triple = "wasm32-unknown-wasi"
 
-%"main.Point[float32]" = type { float, float }
 %"main.Point[int]" = type { i32, i32 }
+%"main.Point[float32]" = type { float, float }
 
-declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #0
+declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*) #0
+
+declare void @runtime.trackPointer(i8* nocapture readonly, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.init(ptr %context) unnamed_addr #1 {
+define hidden void @main.init(i8* %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.main(ptr %context) unnamed_addr #1 {
+define hidden void @main.main(i8* %context) unnamed_addr #1 {
 entry:
-  %0 = call %"main.Point[float32]" @"main.Add[float32]"(float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, ptr undef)
+  %bi = alloca %"main.Point[int]", align 8
-  %1 = call %"main.Point[int]" @"main.Add[int]"(i32 0, i32 0, i32 0, i32 0, ptr undef)
+  %ai = alloca %"main.Point[int]", align 8
+  %bf = alloca %"main.Point[float32]", align 8
+  %af = alloca %"main.Point[float32]", align 8
+  %af.repack = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %af, i32 0, i32 0
+  store float 0.000000e+00, float* %af.repack, align 8
+  %af.repack1 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %af, i32 0, i32 1
+  store float 0.000000e+00, float* %af.repack1, align 4
+  %0 = bitcast %"main.Point[float32]"* %af to i8*
+  call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #2
+  %bf.repack = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %bf, i32 0, i32 0
+  store float 0.000000e+00, float* %bf.repack, align 8
+  %bf.repack2 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %bf, i32 0, i32 1
+  store float 0.000000e+00, float* %bf.repack2, align 4
+  %1 = bitcast %"main.Point[float32]"* %bf to i8*
+  call void @runtime.trackPointer(i8* nonnull %1, i8* undef) #2
+  %.elt = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %af, i32 0, i32 0
+  %.unpack = load float, float* %.elt, align 8
+  %.elt3 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %af, i32 0, i32 1
+  %.unpack4 = load float, float* %.elt3, align 4
+  %.elt5 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %bf, i32 0, i32 0
+  %.unpack6 = load float, float* %.elt5, align 8
+  %.elt7 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %bf, i32 0, i32 1
+  %.unpack8 = load float, float* %.elt7, align 4
+  %2 = call %"main.Point[float32]" @"main.Add[float32]"(float %.unpack, float %.unpack4, float %.unpack6, float %.unpack8, i8* undef)
+  %ai.repack = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %ai, i32 0, i32 0
+  store i32 0, i32* %ai.repack, align 8
+  %ai.repack9 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %ai, i32 0, i32 1
+  store i32 0, i32* %ai.repack9, align 4
+  %3 = bitcast %"main.Point[int]"* %ai to i8*
+  call void @runtime.trackPointer(i8* nonnull %3, i8* undef) #2
+  %bi.repack = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %bi, i32 0, i32 0
+  store i32 0, i32* %bi.repack, align 8
+  %bi.repack10 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %bi, i32 0, i32 1
+  store i32 0, i32* %bi.repack10, align 4
+  %4 = bitcast %"main.Point[int]"* %bi to i8*
+  call void @runtime.trackPointer(i8* nonnull %4, i8* undef) #2
+  %.elt11 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %ai, i32 0, i32 0
+  %.unpack12 = load i32, i32* %.elt11, align 8
+  %.elt13 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %ai, i32 0, i32 1
+  %.unpack14 = load i32, i32* %.elt13, align 4
+  %.elt15 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %bi, i32 0, i32 0
+  %.unpack16 = load i32, i32* %.elt15, align 8
+  %.elt17 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %bi, i32 0, i32 1
+  %.unpack18 = load i32, i32* %.elt17, align 4
+  %5 = call %"main.Point[int]" @"main.Add[int]"(i32 %.unpack12, i32 %.unpack14, i32 %.unpack16, i32 %.unpack18, i8* undef)
   ret void
 }
 
 ; Function Attrs: nounwind
-define linkonce_odr hidden %"main.Point[float32]" @"main.Add[float32]"(float %a.X, float %a.Y, float %b.X, float %b.Y, ptr %context) unnamed_addr #1 {
+define linkonce_odr hidden %"main.Point[float32]" @"main.Add[float32]"(float %a.X, float %a.Y, float %b.X, float %b.Y, i8* %context) unnamed_addr #1 {
 entry:
-  %stackalloc = alloca i8, align 1
+  %complit = alloca %"main.Point[float32]", align 8
-  %a = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
+  %b = alloca %"main.Point[float32]", align 8
-  call void @runtime.trackPointer(ptr nonnull %a, ptr nonnull %stackalloc, ptr undef) #3
+  %a = alloca %"main.Point[float32]", align 8
-  store float %a.X, ptr %a, align 4
+  %a.repack = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %a, i32 0, i32 0
-  %a.repack9 = getelementptr inbounds nuw i8, ptr %a, i32 4
+  store float 0.000000e+00, float* %a.repack, align 8
-  store float %a.Y, ptr %a.repack9, align 4
+  %a.repack9 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %a, i32 0, i32 1
-  %b = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
+  store float 0.000000e+00, float* %a.repack9, align 4
-  call void @runtime.trackPointer(ptr nonnull %b, ptr nonnull %stackalloc, ptr undef) #3
+  %0 = bitcast %"main.Point[float32]"* %a to i8*
-  store float %b.X, ptr %b, align 4
+  call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #2
-  %b.repack11 = getelementptr inbounds nuw i8, ptr %b, i32 4
+  %a.repack10 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %a, i32 0, i32 0
-  store float %b.Y, ptr %b.repack11, align 4
+  store float %a.X, float* %a.repack10, align 8
-  call void @main.checkSize(i32 4, ptr undef) #3
+  %a.repack11 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %a, i32 0, i32 1
-  call void @main.checkSize(i32 8, ptr undef) #3
+  store float %a.Y, float* %a.repack11, align 4
-  %complit = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
+  %b.repack = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %b, i32 0, i32 0
-  call void @runtime.trackPointer(ptr nonnull %complit, ptr nonnull %stackalloc, ptr undef) #3
+  store float 0.000000e+00, float* %b.repack, align 8
+  %b.repack13 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %b, i32 0, i32 1
+  store float 0.000000e+00, float* %b.repack13, align 4
+  %1 = bitcast %"main.Point[float32]"* %b to i8*
+  call void @runtime.trackPointer(i8* nonnull %1, i8* undef) #2
+  %b.repack14 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %b, i32 0, i32 0
+  store float %b.X, float* %b.repack14, align 8
+  %b.repack15 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %b, i32 0, i32 1
+  store float %b.Y, float* %b.repack15, align 4
+  call void @main.checkSize(i32 4, i8* undef) #2
+  call void @main.checkSize(i32 8, i8* undef) #2
+  %complit.repack = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %complit, i32 0, i32 0
+  store float 0.000000e+00, float* %complit.repack, align 8
+  %complit.repack17 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %complit, i32 0, i32 1
+  store float 0.000000e+00, float* %complit.repack17, align 4
+  %2 = bitcast %"main.Point[float32]"* %complit to i8*
+  call void @runtime.trackPointer(i8* nonnull %2, i8* undef) #2
+  %3 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %complit, i32 0, i32 0
   br i1 false, label %deref.throw, label %deref.next
 
 deref.next:                                       ; preds = %entry
   br i1 false, label %deref.throw1, label %deref.next2
 
 deref.next2:                                      ; preds = %deref.next
-  %0 = load float, ptr %a, align 4
+  %4 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %b, i32 0, i32 0
-  %1 = load float, ptr %b, align 4
+  %5 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %a, i32 0, i32 0
-  %2 = fadd float %0, %1
+  %6 = load float, float* %5, align 8
+  %7 = load float, float* %4, align 8
+  %8 = fadd float %6, %7
   br i1 false, label %deref.throw3, label %deref.next4
 
 deref.next4:                                      ; preds = %deref.next2
   br i1 false, label %deref.throw5, label %deref.next6
 
 deref.next6:                                      ; preds = %deref.next4
-  %3 = getelementptr inbounds nuw i8, ptr %b, i32 4
+  %9 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %b, i32 0, i32 1
-  %4 = getelementptr inbounds nuw i8, ptr %a, i32 4
+  %10 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %a, i32 0, i32 1
-  %5 = load float, ptr %4, align 4
+  %11 = load float, float* %10, align 4
-  %6 = load float, ptr %3, align 4
+  %12 = load float, float* %9, align 4
   br i1 false, label %store.throw, label %store.next
 
 store.next:                                       ; preds = %deref.next6
-  store float %2, ptr %complit, align 4
+  store float %8, float* %3, align 8
   br i1 false, label %store.throw7, label %store.next8
 
 store.next8:                                      ; preds = %store.next
-  %7 = getelementptr inbounds nuw i8, ptr %complit, i32 4
+  %13 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %complit, i32 0, i32 1
-  %8 = fadd float %5, %6
+  %14 = fadd float %11, %12
-  store float %8, ptr %7, align 4
+  store float %14, float* %13, align 4
-  %.unpack = load float, ptr %complit, align 4
+  %.elt = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %complit, i32 0, i32 0
-  %9 = insertvalue %"main.Point[float32]" poison, float %.unpack, 0
+  %.unpack = load float, float* %.elt, align 8
-  %10 = insertvalue %"main.Point[float32]" %9, float %8, 1
+  %15 = insertvalue %"main.Point[float32]" undef, float %.unpack, 0
-  ret %"main.Point[float32]" %10
+  %16 = insertvalue %"main.Point[float32]" %15, float %14, 1
+  ret %"main.Point[float32]" %16
 
 deref.throw:                                      ; preds = %entry
   unreachable
@@ -93,64 +159,81 @@ store.throw7:                                     ; preds = %store.next
   unreachable
 }
 
-; Function Attrs: allockind("alloc,zeroed") allocsize(0)
+declare void @main.checkSize(i32, i8*) #0
-declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #2
 
-declare void @main.checkSize(i32, ptr) #0
+declare void @runtime.nilPanic(i8*) #0
-
-declare void @runtime.nilPanic(ptr) #0
 
 ; Function Attrs: nounwind
-define linkonce_odr hidden %"main.Point[int]" @"main.Add[int]"(i32 %a.X, i32 %a.Y, i32 %b.X, i32 %b.Y, ptr %context) unnamed_addr #1 {
+define linkonce_odr hidden %"main.Point[int]" @"main.Add[int]"(i32 %a.X, i32 %a.Y, i32 %b.X, i32 %b.Y, i8* %context) unnamed_addr #1 {
 entry:
-  %stackalloc = alloca i8, align 1
+  %complit = alloca %"main.Point[int]", align 8
-  %a = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
+  %b = alloca %"main.Point[int]", align 8
-  call void @runtime.trackPointer(ptr nonnull %a, ptr nonnull %stackalloc, ptr undef) #3
+  %a = alloca %"main.Point[int]", align 8
-  store i32 %a.X, ptr %a, align 4
+  %a.repack = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %a, i32 0, i32 0
-  %a.repack9 = getelementptr inbounds nuw i8, ptr %a, i32 4
+  store i32 0, i32* %a.repack, align 8
-  store i32 %a.Y, ptr %a.repack9, align 4
+  %a.repack9 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %a, i32 0, i32 1
-  %b = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
+  store i32 0, i32* %a.repack9, align 4
-  call void @runtime.trackPointer(ptr nonnull %b, ptr nonnull %stackalloc, ptr undef) #3
+  %0 = bitcast %"main.Point[int]"* %a to i8*
-  store i32 %b.X, ptr %b, align 4
+  call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #2
-  %b.repack11 = getelementptr inbounds nuw i8, ptr %b, i32 4
+  %a.repack10 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %a, i32 0, i32 0
-  store i32 %b.Y, ptr %b.repack11, align 4
+  store i32 %a.X, i32* %a.repack10, align 8
-  call void @main.checkSize(i32 4, ptr undef) #3
+  %a.repack11 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %a, i32 0, i32 1
-  call void @main.checkSize(i32 8, ptr undef) #3
+  store i32 %a.Y, i32* %a.repack11, align 4
-  %complit = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
+  %b.repack = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %b, i32 0, i32 0
-  call void @runtime.trackPointer(ptr nonnull %complit, ptr nonnull %stackalloc, ptr undef) #3
+  store i32 0, i32* %b.repack, align 8
+  %b.repack13 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %b, i32 0, i32 1
+  store i32 0, i32* %b.repack13, align 4
+  %1 = bitcast %"main.Point[int]"* %b to i8*
+  call void @runtime.trackPointer(i8* nonnull %1, i8* undef) #2
+  %b.repack14 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %b, i32 0, i32 0
+  store i32 %b.X, i32* %b.repack14, align 8
+  %b.repack15 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %b, i32 0, i32 1
+  store i32 %b.Y, i32* %b.repack15, align 4
+  call void @main.checkSize(i32 4, i8* undef) #2
+  call void @main.checkSize(i32 8, i8* undef) #2
+  %complit.repack = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %complit, i32 0, i32 0
+  store i32 0, i32* %complit.repack, align 8
+  %complit.repack17 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %complit, i32 0, i32 1
+  store i32 0, i32* %complit.repack17, align 4
+  %2 = bitcast %"main.Point[int]"* %complit to i8*
+  call void @runtime.trackPointer(i8* nonnull %2, i8* undef) #2
+  %3 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %complit, i32 0, i32 0
   br i1 false, label %deref.throw, label %deref.next
 
 deref.next:                                       ; preds = %entry
   br i1 false, label %deref.throw1, label %deref.next2
 
 deref.next2:                                      ; preds = %deref.next
-  %0 = load i32, ptr %a, align 4
+  %4 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %b, i32 0, i32 0
-  %1 = load i32, ptr %b, align 4
+  %5 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %a, i32 0, i32 0
-  %2 = add i32 %0, %1
+  %6 = load i32, i32* %5, align 8
+  %7 = load i32, i32* %4, align 8
+  %8 = add i32 %6, %7
   br i1 false, label %deref.throw3, label %deref.next4
 
 deref.next4:                                      ; preds = %deref.next2
   br i1 false, label %deref.throw5, label %deref.next6
 
 deref.next6:                                      ; preds = %deref.next4
-  %3 = getelementptr inbounds nuw i8, ptr %b, i32 4
+  %9 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %b, i32 0, i32 1
-  %4 = getelementptr inbounds nuw i8, ptr %a, i32 4
+  %10 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %a, i32 0, i32 1
-  %5 = load i32, ptr %4, align 4
+  %11 = load i32, i32* %10, align 4
-  %6 = load i32, ptr %3, align 4
+  %12 = load i32, i32* %9, align 4
   br i1 false, label %store.throw, label %store.next
 
 store.next:                                       ; preds = %deref.next6
-  store i32 %2, ptr %complit, align 4
+  store i32 %8, i32* %3, align 8
   br i1 false, label %store.throw7, label %store.next8
 
 store.next8:                                      ; preds = %store.next
-  %7 = getelementptr inbounds nuw i8, ptr %complit, i32 4
+  %13 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %complit, i32 0, i32 1
-  %8 = add i32 %5, %6
+  %14 = add i32 %11, %12
-  store i32 %8, ptr %7, align 4
+  store i32 %14, i32* %13, align 4
-  %.unpack = load i32, ptr %complit, align 4
+  %.elt = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %complit, i32 0, i32 0
-  %9 = insertvalue %"main.Point[int]" poison, i32 %.unpack, 0
+  %.unpack = load i32, i32* %.elt, align 8
-  %10 = insertvalue %"main.Point[int]" %9, i32 %8, 1
+  %15 = insertvalue %"main.Point[int]" undef, i32 %.unpack, 0
-  ret %"main.Point[int]" %10
+  %16 = insertvalue %"main.Point[int]" %15, i32 %14, 1
+  ret %"main.Point[int]" %16
 
 deref.throw:                                      ; preds = %entry
   unreachable
@@ -171,7 +254,6 @@ store.throw7:                                     ; preds = %store.next
   unreachable
 }
 
-attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
-attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
-attributes #2 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #2 = { nounwind }
-attributes #3 = { nounwind }

compiler/testdata/go1.20.ll

@@ -5,24 +5,27 @@ target triple = "wasm32-unknown-wasi"
 
 %runtime._string = type { ptr, i32 }
 
-declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #0
+; Function Attrs: allockind("alloc,zeroed") allocsize(0)
+declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #0
+
+declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #1
 
 ; Function Attrs: nounwind
-define hidden void @main.init(ptr %context) unnamed_addr #1 {
+define hidden void @main.init(ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden ptr @main.unsafeSliceData(ptr %s.data, i32 %s.len, i32 %s.cap, ptr %context) unnamed_addr #1 {
+define hidden ptr @main.unsafeSliceData(ptr %s.data, i32 %s.len, i32 %s.cap, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
-  call void @runtime.trackPointer(ptr %s.data, ptr nonnull %stackalloc, ptr undef) #2
+  call void @runtime.trackPointer(ptr %s.data, ptr nonnull %stackalloc, ptr undef) #3
   ret ptr %s.data
 }
 
 ; Function Attrs: nounwind
-define hidden %runtime._string @main.unsafeString(ptr dereferenceable_or_null(1) %ptr, i16 %len, ptr %context) unnamed_addr #1 {
+define hidden %runtime._string @main.unsafeString(ptr dereferenceable_or_null(1) %ptr, i16 %len, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
   %0 = icmp slt i16 %len, 0
@@ -36,24 +39,25 @@ unsafe.String.next:                               ; preds = %entry
   %5 = zext nneg i16 %len to i32
   %6 = insertvalue %runtime._string undef, ptr %ptr, 0
   %7 = insertvalue %runtime._string %6, i32 %5, 1
-  call void @runtime.trackPointer(ptr %ptr, ptr nonnull %stackalloc, ptr undef) #2
+  call void @runtime.trackPointer(ptr %ptr, ptr nonnull %stackalloc, ptr undef) #3
   ret %runtime._string %7
 
 unsafe.String.throw:                              ; preds = %entry
-  call void @runtime.unsafeSlicePanic(ptr undef) #2
+  call void @runtime.unsafeSlicePanic(ptr undef) #3
   unreachable
 }
 
-declare void @runtime.unsafeSlicePanic(ptr) #0
+declare void @runtime.unsafeSlicePanic(ptr) #1
 
 ; Function Attrs: nounwind
-define hidden ptr @main.unsafeStringData(ptr readonly %s.data, i32 %s.len, ptr %context) unnamed_addr #1 {
+define hidden ptr @main.unsafeStringData(ptr readonly %s.data, i32 %s.len, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
-  call void @runtime.trackPointer(ptr %s.data, ptr nonnull %stackalloc, ptr undef) #2
+  call void @runtime.trackPointer(ptr %s.data, ptr nonnull %stackalloc, ptr undef) #3
   ret ptr %s.data
 }
 
-attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #3 = { nounwind }

compiler/testdata/go1.21.ll

@@ -5,32 +5,32 @@ target triple = "wasm32-unknown-wasi"
 
 %runtime._string = type { ptr, i32 }
 
-declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #0
+; Function Attrs: allockind("alloc,zeroed") allocsize(0)
+declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #0
+
+declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #1
 
 ; Function Attrs: nounwind
-define hidden void @main.init(ptr %context) unnamed_addr #1 {
+define hidden void @main.init(ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.min1(i32 %a, ptr %context) unnamed_addr #1 {
+define hidden i32 @main.min1(i32 %a, ptr %context) unnamed_addr #2 {
 entry:
   ret i32 %a
 }
 
-; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
-declare i32 @llvm.smin.i32(i32, i32) #2
-
 ; Function Attrs: nounwind
-define hidden i32 @main.min2(i32 %a, i32 %b, ptr %context) unnamed_addr #1 {
+define hidden i32 @main.min2(i32 %a, i32 %b, ptr %context) unnamed_addr #2 {
 entry:
   %0 = call i32 @llvm.smin.i32(i32 %a, i32 %b)
   ret i32 %0
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.min3(i32 %a, i32 %b, i32 %c, ptr %context) unnamed_addr #1 {
+define hidden i32 @main.min3(i32 %a, i32 %b, i32 %c, ptr %context) unnamed_addr #2 {
 entry:
   %0 = call i32 @llvm.smin.i32(i32 %a, i32 %b)
   %1 = call i32 @llvm.smin.i32(i32 %0, i32 %c)
@@ -38,7 +38,7 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.min4(i32 %a, i32 %b, i32 %c, i32 %d, ptr %context) unnamed_addr #1 {
+define hidden i32 @main.min4(i32 %a, i32 %b, i32 %c, i32 %d, ptr %context) unnamed_addr #2 {
 entry:
   %0 = call i32 @llvm.smin.i32(i32 %a, i32 %b)
   %1 = call i32 @llvm.smin.i32(i32 %0, i32 %c)
@@ -47,109 +47,91 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden i8 @main.minUint8(i8 %a, i8 %b, ptr %context) unnamed_addr #1 {
+define hidden i8 @main.minUint8(i8 %a, i8 %b, ptr %context) unnamed_addr #2 {
 entry:
   %0 = call i8 @llvm.umin.i8(i8 %a, i8 %b)
   ret i8 %0
 }
 
-; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
-declare i8 @llvm.umin.i8(i8, i8) #2
-
 ; Function Attrs: nounwind
-define hidden i32 @main.minUnsigned(i32 %a, i32 %b, ptr %context) unnamed_addr #1 {
+define hidden i32 @main.minUnsigned(i32 %a, i32 %b, ptr %context) unnamed_addr #2 {
 entry:
   %0 = call i32 @llvm.umin.i32(i32 %a, i32 %b)
   ret i32 %0
 }
 
-; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
-declare i32 @llvm.umin.i32(i32, i32) #2
-
 ; Function Attrs: nounwind
-define hidden float @main.minFloat32(float %a, float %b, ptr %context) unnamed_addr #1 {
+define hidden float @main.minFloat32(float %a, float %b, ptr %context) unnamed_addr #2 {
 entry:
-  %0 = call float @llvm.minimum.f32(float %a, float %b)
+  %0 = fcmp olt float %a, %b
-  ret float %0
+  %1 = select i1 %0, float %a, float %b
+  ret float %1
 }
 
-; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
-declare float @llvm.minimum.f32(float, float) #2
-
 ; Function Attrs: nounwind
-define hidden double @main.minFloat64(double %a, double %b, ptr %context) unnamed_addr #1 {
+define hidden double @main.minFloat64(double %a, double %b, ptr %context) unnamed_addr #2 {
 entry:
-  %0 = call double @llvm.minimum.f64(double %a, double %b)
+  %0 = fcmp olt double %a, %b
-  ret double %0
+  %1 = select i1 %0, double %a, double %b
+  ret double %1
 }
 
-; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
-declare double @llvm.minimum.f64(double, double) #2
-
 ; Function Attrs: nounwind
-define hidden %runtime._string @main.minString(ptr readonly %a.data, i32 %a.len, ptr readonly %b.data, i32 %b.len, ptr %context) unnamed_addr #1 {
+define hidden %runtime._string @main.minString(ptr readonly %a.data, i32 %a.len, ptr readonly %b.data, i32 %b.len, ptr %context) unnamed_addr #2 {
 entry:
   %0 = insertvalue %runtime._string zeroinitializer, ptr %a.data, 0
   %1 = insertvalue %runtime._string %0, i32 %a.len, 1
   %2 = insertvalue %runtime._string zeroinitializer, ptr %b.data, 0
   %3 = insertvalue %runtime._string %2, i32 %b.len, 1
   %stackalloc = alloca i8, align 1
-  %4 = call i1 @runtime.stringLess(ptr %a.data, i32 %a.len, ptr %b.data, i32 %b.len, ptr undef) #4
+  %4 = call i1 @runtime.stringLess(ptr %a.data, i32 %a.len, ptr %b.data, i32 %b.len, ptr undef) #5
   %5 = select i1 %4, %runtime._string %1, %runtime._string %3
   %6 = select i1 %4, ptr %a.data, ptr %b.data
-  call void @runtime.trackPointer(ptr %6, ptr nonnull %stackalloc, ptr undef) #4
+  call void @runtime.trackPointer(ptr %6, ptr nonnull %stackalloc, ptr undef) #5
   ret %runtime._string %5
 }
 
-declare i1 @runtime.stringLess(ptr readonly, i32, ptr readonly, i32, ptr) #0
+declare i1 @runtime.stringLess(ptr readonly, i32, ptr readonly, i32, ptr) #1
 
 ; Function Attrs: nounwind
-define hidden i32 @main.maxInt(i32 %a, i32 %b, ptr %context) unnamed_addr #1 {
+define hidden i32 @main.maxInt(i32 %a, i32 %b, ptr %context) unnamed_addr #2 {
 entry:
   %0 = call i32 @llvm.smax.i32(i32 %a, i32 %b)
   ret i32 %0
 }
 
-; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
-declare i32 @llvm.smax.i32(i32, i32) #2
-
 ; Function Attrs: nounwind
-define hidden i32 @main.maxUint(i32 %a, i32 %b, ptr %context) unnamed_addr #1 {
+define hidden i32 @main.maxUint(i32 %a, i32 %b, ptr %context) unnamed_addr #2 {
 entry:
   %0 = call i32 @llvm.umax.i32(i32 %a, i32 %b)
   ret i32 %0
 }
 
-; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
-declare i32 @llvm.umax.i32(i32, i32) #2
-
 ; Function Attrs: nounwind
-define hidden float @main.maxFloat32(float %a, float %b, ptr %context) unnamed_addr #1 {
+define hidden float @main.maxFloat32(float %a, float %b, ptr %context) unnamed_addr #2 {
 entry:
-  %0 = call float @llvm.maximum.f32(float %a, float %b)
+  %0 = fcmp ogt float %a, %b
-  ret float %0
+  %1 = select i1 %0, float %a, float %b
+  ret float %1
 }
 
-; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
-declare float @llvm.maximum.f32(float, float) #2
-
 ; Function Attrs: nounwind
-define hidden %runtime._string @main.maxString(ptr readonly %a.data, i32 %a.len, ptr readonly %b.data, i32 %b.len, ptr %context) unnamed_addr #1 {
+define hidden %runtime._string @main.maxString(ptr readonly %a.data, i32 %a.len, ptr readonly %b.data, i32 %b.len, ptr %context) unnamed_addr #2 {
 entry:
   %0 = insertvalue %runtime._string zeroinitializer, ptr %a.data, 0
   %1 = insertvalue %runtime._string %0, i32 %a.len, 1
   %2 = insertvalue %runtime._string zeroinitializer, ptr %b.data, 0
   %3 = insertvalue %runtime._string %2, i32 %b.len, 1
   %stackalloc = alloca i8, align 1
-  %4 = call i1 @runtime.stringLess(ptr %b.data, i32 %b.len, ptr %a.data, i32 %a.len, ptr undef) #4
+  %4 = call i1 @runtime.stringLess(ptr %b.data, i32 %b.len, ptr %a.data, i32 %a.len, ptr undef) #5
   %5 = select i1 %4, %runtime._string %1, %runtime._string %3
   %6 = select i1 %4, ptr %a.data, ptr %b.data
-  call void @runtime.trackPointer(ptr %6, ptr nonnull %stackalloc, ptr undef) #4
+  call void @runtime.trackPointer(ptr %6, ptr nonnull %stackalloc, ptr undef) #5
   ret %runtime._string %5
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.clearSlice(ptr %s.data, i32 %s.len, i32 %s.cap, ptr %context) unnamed_addr #1 {
+define hidden void @main.clearSlice(ptr %s.data, i32 %s.len, i32 %s.cap, ptr %context) unnamed_addr #2 {
 entry:
   %0 = shl i32 %s.len, 2
   call void @llvm.memset.p0.i32(ptr align 4 %s.data, i8 0, i32 %0, i1 false)
@@ -160,22 +142,38 @@ entry:
 declare void @llvm.memset.p0.i32(ptr nocapture writeonly, i8, i32, i1 immarg) #3
 
 ; Function Attrs: nounwind
-define hidden void @main.clearZeroSizedSlice(ptr %s.data, i32 %s.len, i32 %s.cap, ptr %context) unnamed_addr #1 {
+define hidden void @main.clearZeroSizedSlice(ptr %s.data, i32 %s.len, i32 %s.cap, ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.clearMap(ptr dereferenceable_or_null(48) %m, ptr %context) unnamed_addr #1 {
+define hidden void @main.clearMap(ptr dereferenceable_or_null(40) %m, ptr %context) unnamed_addr #2 {
 entry:
-  call void @runtime.hashmapClear(ptr %m, ptr undef) #4
+  call void @runtime.hashmapClear(ptr %m, ptr undef) #5
   ret void
 }
 
-declare void @runtime.hashmapClear(ptr dereferenceable_or_null(48), ptr) #0
+declare void @runtime.hashmapClear(ptr dereferenceable_or_null(40), ptr) #1
 
-attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
-attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+declare i32 @llvm.smin.i32(i32, i32) #4
-attributes #2 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
+
+; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
+declare i8 @llvm.umin.i8(i8, i8) #4
+
+; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
+declare i32 @llvm.umin.i32(i32, i32) #4
+
+; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
+declare i32 @llvm.smax.i32(i32, i32) #4
+
+; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
+declare i32 @llvm.umax.i32(i32, i32) #4
+
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
 attributes #3 = { nocallback nofree nounwind willreturn memory(argmem: write) }
-attributes #4 = { nounwind }
+attributes #4 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
+attributes #5 = { nounwind }

compiler/testdata/goroutine-cortex-m-qemu-tasks.ll

@@ -5,50 +5,53 @@ target triple = "thumbv7m-unknown-unknown-eabi"
 
 @"main$string" = internal unnamed_addr constant [4 x i8] c"test", align 1
 
+; Function Attrs: allockind("alloc,zeroed") allocsize(0)
+declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #0
+
 ; Function Attrs: nounwind
-define hidden void @main.init(ptr %context) unnamed_addr #0 {
+define hidden void @main.init(ptr %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.regularFunctionGoroutine(ptr %context) unnamed_addr #0 {
+define hidden void @main.regularFunctionGoroutine(ptr %context) unnamed_addr #1 {
 entry:
-  %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (ptr @"main.regularFunction$gowrapper" to i32), ptr undef) #11
+  %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (ptr @"main.regularFunction$gowrapper" to i32), ptr undef) #9
-  call void @"internal/task.start"(i32 ptrtoint (ptr @"main.regularFunction$gowrapper" to i32), ptr nonnull inttoptr (i32 5 to ptr), i32 %stacksize, ptr undef) #11
+  call void @"internal/task.start"(i32 ptrtoint (ptr @"main.regularFunction$gowrapper" to i32), ptr nonnull inttoptr (i32 5 to ptr), i32 %stacksize, ptr undef) #9
   ret void
 }
 
-declare void @main.regularFunction(i32, ptr) #1
+declare void @main.regularFunction(i32, ptr) #2
 
 ; Function Attrs: nounwind
-define linkonce_odr void @"main.regularFunction$gowrapper"(ptr %0) unnamed_addr #2 {
+define linkonce_odr void @"main.regularFunction$gowrapper"(ptr %0) unnamed_addr #3 {
 entry:
   %unpack.int = ptrtoint ptr %0 to i32
-  call void @main.regularFunction(i32 %unpack.int, ptr undef) #11
+  call void @main.regularFunction(i32 %unpack.int, ptr undef) #9
   ret void
 }
 
-declare i32 @"internal/task.getGoroutineStackSize"(i32, ptr) #1
+declare i32 @"internal/task.getGoroutineStackSize"(i32, ptr) #2
 
-declare void @"internal/task.start"(i32, ptr, i32, ptr) #1
+declare void @"internal/task.start"(i32, ptr, i32, ptr) #2
 
 ; Function Attrs: nounwind
-define hidden void @main.inlineFunctionGoroutine(ptr %context) unnamed_addr #0 {
+define hidden void @main.inlineFunctionGoroutine(ptr %context) unnamed_addr #1 {
 entry:
-  %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (ptr @"main.inlineFunctionGoroutine$1$gowrapper" to i32), ptr undef) #11
+  %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (ptr @"main.inlineFunctionGoroutine$1$gowrapper" to i32), ptr undef) #9
-  call void @"internal/task.start"(i32 ptrtoint (ptr @"main.inlineFunctionGoroutine$1$gowrapper" to i32), ptr nonnull inttoptr (i32 5 to ptr), i32 %stacksize, ptr undef) #11
+  call void @"internal/task.start"(i32 ptrtoint (ptr @"main.inlineFunctionGoroutine$1$gowrapper" to i32), ptr nonnull inttoptr (i32 5 to ptr), i32 %stacksize, ptr undef) #9
   ret void
 }
 
 ; Function Attrs: nounwind
-define internal void @"main.inlineFunctionGoroutine$1"(i32 %x, ptr %context) unnamed_addr #0 {
+define internal void @"main.inlineFunctionGoroutine$1"(i32 %x, ptr %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define linkonce_odr void @"main.inlineFunctionGoroutine$1$gowrapper"(ptr %0) unnamed_addr #3 {
+define linkonce_odr void @"main.inlineFunctionGoroutine$1$gowrapper"(ptr %0) unnamed_addr #4 {
 entry:
   %unpack.int = ptrtoint ptr %0 to i32
   call void @"main.inlineFunctionGoroutine$1"(i32 %unpack.int, ptr undef)
@@ -56,28 +59,25 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.closureFunctionGoroutine(ptr %context) unnamed_addr #0 {
+define hidden void @main.closureFunctionGoroutine(ptr %context) unnamed_addr #1 {
 entry:
-  %n = call align 4 dereferenceable(4) ptr @runtime.alloc(i32 4, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #11
+  %n = call align 4 dereferenceable(4) ptr @runtime.alloc(i32 4, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
   store i32 3, ptr %n, align 4
-  %0 = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr null, ptr undef) #11
+  %0 = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr null, ptr undef) #9
   store i32 5, ptr %0, align 4
   %1 = getelementptr inbounds nuw i8, ptr %0, i32 4
   store ptr %n, ptr %1, align 4
-  %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (ptr @"main.closureFunctionGoroutine$1$gowrapper" to i32), ptr undef) #11
+  %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (ptr @"main.closureFunctionGoroutine$1$gowrapper" to i32), ptr undef) #9
-  call void @"internal/task.start"(i32 ptrtoint (ptr @"main.closureFunctionGoroutine$1$gowrapper" to i32), ptr nonnull %0, i32 %stacksize, ptr undef) #11
+  call void @"internal/task.start"(i32 ptrtoint (ptr @"main.closureFunctionGoroutine$1$gowrapper" to i32), ptr nonnull %0, i32 %stacksize, ptr undef) #9
   %2 = load i32, ptr %n, align 4
-  call void @runtime.printlock(ptr undef) #11
+  call void @runtime.printlock(ptr undef) #9
-  call void @runtime.printint32(i32 %2, ptr undef) #11
+  call void @runtime.printint32(i32 %2, ptr undef) #9
-  call void @runtime.printunlock(ptr undef) #11
+  call void @runtime.printunlock(ptr undef) #9
   ret void
 }
 
-; Function Attrs: allockind("alloc,zeroed") allocsize(0)
-declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #4
-
 ; Function Attrs: nounwind
-define internal void @"main.closureFunctionGoroutine$1"(i32 %x, ptr %context) unnamed_addr #0 {
+define internal void @"main.closureFunctionGoroutine$1"(i32 %x, ptr %context) unnamed_addr #1 {
 entry:
   store i32 7, ptr %context, align 4
   ret void
@@ -93,23 +93,23 @@ entry:
   ret void
 }
 
-declare void @runtime.printlock(ptr) #1
+declare void @runtime.printlock(ptr) #2
 
-declare void @runtime.printint32(i32, ptr) #1
+declare void @runtime.printint32(i32, ptr) #2
 
-declare void @runtime.printunlock(ptr) #1
+declare void @runtime.printunlock(ptr) #2
 
 ; Function Attrs: nounwind
-define hidden void @main.funcGoroutine(ptr %fn.context, ptr %fn.funcptr, ptr %context) unnamed_addr #0 {
+define hidden void @main.funcGoroutine(ptr %fn.context, ptr %fn.funcptr, ptr %context) unnamed_addr #1 {
 entry:
-  %0 = call align 4 dereferenceable(12) ptr @runtime.alloc(i32 12, ptr null, ptr undef) #11
+  %0 = call align 4 dereferenceable(12) ptr @runtime.alloc(i32 12, ptr null, ptr undef) #9
   store i32 5, ptr %0, align 4
   %1 = getelementptr inbounds nuw i8, ptr %0, i32 4
   store ptr %fn.context, ptr %1, align 4
   %2 = getelementptr inbounds nuw i8, ptr %0, i32 8
   store ptr %fn.funcptr, ptr %2, align 4
-  %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (ptr @main.funcGoroutine.gowrapper to i32), ptr undef) #11
+  %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (ptr @main.funcGoroutine.gowrapper to i32), ptr undef) #9
-  call void @"internal/task.start"(i32 ptrtoint (ptr @main.funcGoroutine.gowrapper to i32), ptr nonnull %0, i32 %stacksize, ptr undef) #11
+  call void @"internal/task.start"(i32 ptrtoint (ptr @main.funcGoroutine.gowrapper to i32), ptr nonnull %0, i32 %stacksize, ptr undef) #9
   ret void
 }
 
@@ -121,43 +121,38 @@ entry:
   %3 = load ptr, ptr %2, align 4
   %4 = getelementptr inbounds nuw i8, ptr %0, i32 8
   %5 = load ptr, ptr %4, align 4
-  call void %5(i32 %1, ptr %3) #11
+  call void %5(i32 %1, ptr %3) #9
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.recoverBuiltinGoroutine(ptr %context) unnamed_addr #0 {
+define hidden void @main.recoverBuiltinGoroutine(ptr %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.copyBuiltinGoroutine(ptr %dst.data, i32 %dst.len, i32 %dst.cap, ptr %src.data, i32 %src.len, i32 %src.cap, ptr %context) unnamed_addr #0 {
+define hidden void @main.copyBuiltinGoroutine(ptr %dst.data, i32 %dst.len, i32 %dst.cap, ptr %src.data, i32 %src.len, i32 %src.cap, ptr %context) unnamed_addr #1 {
 entry:
-  %copy.n = call i32 @llvm.umin.i32(i32 %dst.len, i32 %src.len)
+  %copy.n = call i32 @runtime.sliceCopy(ptr %dst.data, ptr %src.data, i32 %dst.len, i32 %src.len, i32 1, ptr undef) #9
-  call void @llvm.memmove.p0.p0.i32(ptr align 1 %dst.data, ptr align 1 %src.data, i32 %copy.n, i1 false)
   ret void
 }
 
-; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
+declare i32 @runtime.sliceCopy(ptr nocapture writeonly, ptr nocapture readonly, i32, i32, i32, ptr) #2
-declare i32 @llvm.umin.i32(i32, i32) #7
-
-; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
-declare void @llvm.memmove.p0.p0.i32(ptr nocapture writeonly, ptr nocapture readonly, i32, i1 immarg) #8
 
 ; Function Attrs: nounwind
-define hidden void @main.closeBuiltinGoroutine(ptr dereferenceable_or_null(36) %ch, ptr %context) unnamed_addr #0 {
+define hidden void @main.closeBuiltinGoroutine(ptr dereferenceable_or_null(36) %ch, ptr %context) unnamed_addr #1 {
 entry:
-  call void @runtime.chanClose(ptr %ch, ptr undef) #11
+  call void @runtime.chanClose(ptr %ch, ptr undef) #9
   ret void
 }
 
-declare void @runtime.chanClose(ptr dereferenceable_or_null(36), ptr) #1
+declare void @runtime.chanClose(ptr dereferenceable_or_null(36), ptr) #2
 
 ; Function Attrs: nounwind
-define hidden void @main.startInterfaceMethod(ptr %itf.typecode, ptr %itf.value, ptr %context) unnamed_addr #0 {
+define hidden void @main.startInterfaceMethod(ptr %itf.typecode, ptr %itf.value, ptr %context) unnamed_addr #1 {
 entry:
-  %0 = call align 4 dereferenceable(16) ptr @runtime.alloc(i32 16, ptr null, ptr undef) #11
+  %0 = call align 4 dereferenceable(16) ptr @runtime.alloc(i32 16, ptr null, ptr undef) #9
   store ptr %itf.value, ptr %0, align 4
   %1 = getelementptr inbounds nuw i8, ptr %0, i32 4
   store ptr @"main$string", ptr %1, align 4
@@ -165,15 +160,15 @@ entry:
   store i32 4, ptr %2, align 4
   %3 = getelementptr inbounds nuw i8, ptr %0, i32 12
   store ptr %itf.typecode, ptr %3, align 4
-  %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (ptr @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper" to i32), ptr undef) #11
+  %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (ptr @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper" to i32), ptr undef) #9
-  call void @"internal/task.start"(i32 ptrtoint (ptr @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper" to i32), ptr nonnull %0, i32 %stacksize, ptr undef) #11
+  call void @"internal/task.start"(i32 ptrtoint (ptr @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper" to i32), ptr nonnull %0, i32 %stacksize, ptr undef) #9
   ret void
 }
 
-declare void @"interface:{Print:func:{basic:string}{}}.Print$invoke"(ptr, ptr, i32, ptr, ptr) #9
+declare void @"interface:{Print:func:{basic:string}{}}.Print$invoke"(ptr, ptr, i32, ptr, ptr) #7
 
 ; Function Attrs: nounwind
-define linkonce_odr void @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper"(ptr %0) unnamed_addr #10 {
+define linkonce_odr void @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper"(ptr %0) unnamed_addr #8 {
 entry:
   %1 = load ptr, ptr %0, align 4
   %2 = getelementptr inbounds nuw i8, ptr %0, i32 4
@@ -182,19 +177,17 @@ entry:
   %5 = load i32, ptr %4, align 4
   %6 = getelementptr inbounds nuw i8, ptr %0, i32 12
   %7 = load ptr, ptr %6, align 4
-  call void @"interface:{Print:func:{basic:string}{}}.Print$invoke"(ptr %1, ptr %3, i32 %5, ptr %7, ptr undef) #11
+  call void @"interface:{Print:func:{basic:string}{}}.Print$invoke"(ptr %1, ptr %3, i32 %5, ptr %7, ptr undef) #9
   ret void
 }
 
-attributes #0 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" }
-attributes #1 = { "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" }
+attributes #1 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" }
-attributes #2 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" "tinygo-gowrapper"="main.regularFunction" }
+attributes #2 = { "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" }
-attributes #3 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" "tinygo-gowrapper"="main.inlineFunctionGoroutine$1" }
+attributes #3 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" "tinygo-gowrapper"="main.regularFunction" }
-attributes #4 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" }
+attributes #4 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" "tinygo-gowrapper"="main.inlineFunctionGoroutine$1" }
 attributes #5 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" "tinygo-gowrapper"="main.closureFunctionGoroutine$1" }
 attributes #6 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" "tinygo-gowrapper" }
-attributes #7 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
+attributes #7 = { "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" "tinygo-invoke"="reflect/methods.Print(string)" "tinygo-methods"="reflect/methods.Print(string)" }
-attributes #8 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
+attributes #8 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" "tinygo-gowrapper"="interface:{Print:func:{basic:string}{}}.Print$invoke" }
-attributes #9 = { "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" "tinygo-invoke"="reflect/methods.Print(string)" "tinygo-methods"="reflect/methods.Print(string)" }
+attributes #9 = { nounwind }
-attributes #10 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" "tinygo-gowrapper"="interface:{Print:func:{basic:string}{}}.Print$invoke" }
-attributes #11 = { nounwind }

compiler/testdata/goroutine-wasm-asyncify.ll

@@ -5,85 +5,85 @@ target triple = "wasm32-unknown-wasi"
 
 @"main$string" = internal unnamed_addr constant [4 x i8] c"test", align 1
 
-declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #0
+; Function Attrs: allockind("alloc,zeroed") allocsize(0)
+declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #0
+
+declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #1
 
 ; Function Attrs: nounwind
-define hidden void @main.init(ptr %context) unnamed_addr #1 {
+define hidden void @main.init(ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.regularFunctionGoroutine(ptr %context) unnamed_addr #1 {
+define hidden void @main.regularFunctionGoroutine(ptr %context) unnamed_addr #2 {
 entry:
-  call void @"internal/task.start"(i32 ptrtoint (ptr @"main.regularFunction$gowrapper" to i32), ptr nonnull inttoptr (i32 5 to ptr), i32 65536, ptr undef) #11
+  call void @"internal/task.start"(i32 ptrtoint (ptr @"main.regularFunction$gowrapper" to i32), ptr nonnull inttoptr (i32 5 to ptr), i32 65536, ptr undef) #9
   ret void
 }
 
-declare void @main.regularFunction(i32, ptr) #0
+declare void @main.regularFunction(i32, ptr) #1
 
-declare void @runtime.deadlock(ptr) #0
+declare void @runtime.deadlock(ptr) #1
 
 ; Function Attrs: nounwind
-define linkonce_odr void @"main.regularFunction$gowrapper"(ptr %0) unnamed_addr #2 {
+define linkonce_odr void @"main.regularFunction$gowrapper"(ptr %0) unnamed_addr #3 {
 entry:
   %unpack.int = ptrtoint ptr %0 to i32
-  call void @main.regularFunction(i32 %unpack.int, ptr undef) #11
+  call void @main.regularFunction(i32 %unpack.int, ptr undef) #9
-  call void @runtime.deadlock(ptr undef) #11
+  call void @runtime.deadlock(ptr undef) #9
   unreachable
 }
 
-declare void @"internal/task.start"(i32, ptr, i32, ptr) #0
+declare void @"internal/task.start"(i32, ptr, i32, ptr) #1
 
 ; Function Attrs: nounwind
-define hidden void @main.inlineFunctionGoroutine(ptr %context) unnamed_addr #1 {
+define hidden void @main.inlineFunctionGoroutine(ptr %context) unnamed_addr #2 {
 entry:
-  call void @"internal/task.start"(i32 ptrtoint (ptr @"main.inlineFunctionGoroutine$1$gowrapper" to i32), ptr nonnull inttoptr (i32 5 to ptr), i32 65536, ptr undef) #11
+  call void @"internal/task.start"(i32 ptrtoint (ptr @"main.inlineFunctionGoroutine$1$gowrapper" to i32), ptr nonnull inttoptr (i32 5 to ptr), i32 65536, ptr undef) #9
   ret void
 }
 
 ; Function Attrs: nounwind
-define internal void @"main.inlineFunctionGoroutine$1"(i32 %x, ptr %context) unnamed_addr #1 {
+define internal void @"main.inlineFunctionGoroutine$1"(i32 %x, ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define linkonce_odr void @"main.inlineFunctionGoroutine$1$gowrapper"(ptr %0) unnamed_addr #3 {
+define linkonce_odr void @"main.inlineFunctionGoroutine$1$gowrapper"(ptr %0) unnamed_addr #4 {
 entry:
   %unpack.int = ptrtoint ptr %0 to i32
   call void @"main.inlineFunctionGoroutine$1"(i32 %unpack.int, ptr undef)
-  call void @runtime.deadlock(ptr undef) #11
+  call void @runtime.deadlock(ptr undef) #9
   unreachable
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.closureFunctionGoroutine(ptr %context) unnamed_addr #1 {
+define hidden void @main.closureFunctionGoroutine(ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
-  %n = call align 4 dereferenceable(4) ptr @runtime.alloc(i32 4, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #11
+  %n = call align 4 dereferenceable(4) ptr @runtime.alloc(i32 4, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %n, ptr nonnull %stackalloc, ptr undef) #11
+  call void @runtime.trackPointer(ptr nonnull %n, ptr nonnull %stackalloc, ptr undef) #9
   store i32 3, ptr %n, align 4
-  call void @runtime.trackPointer(ptr nonnull %n, ptr nonnull %stackalloc, ptr undef) #11
+  call void @runtime.trackPointer(ptr nonnull %n, ptr nonnull %stackalloc, ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull @"main.closureFunctionGoroutine$1", ptr nonnull %stackalloc, ptr undef) #11
+  call void @runtime.trackPointer(ptr nonnull @"main.closureFunctionGoroutine$1", ptr nonnull %stackalloc, ptr undef) #9
-  %0 = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr null, ptr undef) #11
+  %0 = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr null, ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %0, ptr nonnull %stackalloc, ptr undef) #11
+  call void @runtime.trackPointer(ptr nonnull %0, ptr nonnull %stackalloc, ptr undef) #9
   store i32 5, ptr %0, align 4
   %1 = getelementptr inbounds nuw i8, ptr %0, i32 4
   store ptr %n, ptr %1, align 4
-  call void @"internal/task.start"(i32 ptrtoint (ptr @"main.closureFunctionGoroutine$1$gowrapper" to i32), ptr nonnull %0, i32 65536, ptr undef) #11
+  call void @"internal/task.start"(i32 ptrtoint (ptr @"main.closureFunctionGoroutine$1$gowrapper" to i32), ptr nonnull %0, i32 65536, ptr undef) #9
   %2 = load i32, ptr %n, align 4
-  call void @runtime.printlock(ptr undef) #11
+  call void @runtime.printlock(ptr undef) #9
-  call void @runtime.printint32(i32 %2, ptr undef) #11
+  call void @runtime.printint32(i32 %2, ptr undef) #9
-  call void @runtime.printunlock(ptr undef) #11
+  call void @runtime.printunlock(ptr undef) #9
   ret void
 }
 
-; Function Attrs: allockind("alloc,zeroed") allocsize(0)
-declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #4
-
 ; Function Attrs: nounwind
-define internal void @"main.closureFunctionGoroutine$1"(i32 %x, ptr %context) unnamed_addr #1 {
+define internal void @"main.closureFunctionGoroutine$1"(i32 %x, ptr %context) unnamed_addr #2 {
 entry:
   store i32 7, ptr %context, align 4
   ret void
@@ -96,28 +96,28 @@ entry:
   %2 = getelementptr inbounds nuw i8, ptr %0, i32 4
   %3 = load ptr, ptr %2, align 4
   call void @"main.closureFunctionGoroutine$1"(i32 %1, ptr %3)
-  call void @runtime.deadlock(ptr undef) #11
+  call void @runtime.deadlock(ptr undef) #9
   unreachable
 }
 
-declare void @runtime.printlock(ptr) #0
+declare void @runtime.printlock(ptr) #1
 
-declare void @runtime.printint32(i32, ptr) #0
+declare void @runtime.printint32(i32, ptr) #1
 
-declare void @runtime.printunlock(ptr) #0
+declare void @runtime.printunlock(ptr) #1
 
 ; Function Attrs: nounwind
-define hidden void @main.funcGoroutine(ptr %fn.context, ptr %fn.funcptr, ptr %context) unnamed_addr #1 {
+define hidden void @main.funcGoroutine(ptr %fn.context, ptr %fn.funcptr, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
-  %0 = call align 4 dereferenceable(12) ptr @runtime.alloc(i32 12, ptr null, ptr undef) #11
+  %0 = call align 4 dereferenceable(12) ptr @runtime.alloc(i32 12, ptr null, ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %0, ptr nonnull %stackalloc, ptr undef) #11
+  call void @runtime.trackPointer(ptr nonnull %0, ptr nonnull %stackalloc, ptr undef) #9
   store i32 5, ptr %0, align 4
   %1 = getelementptr inbounds nuw i8, ptr %0, i32 4
   store ptr %fn.context, ptr %1, align 4
   %2 = getelementptr inbounds nuw i8, ptr %0, i32 8
   store ptr %fn.funcptr, ptr %2, align 4
-  call void @"internal/task.start"(i32 ptrtoint (ptr @main.funcGoroutine.gowrapper to i32), ptr nonnull %0, i32 65536, ptr undef) #11
+  call void @"internal/task.start"(i32 ptrtoint (ptr @main.funcGoroutine.gowrapper to i32), ptr nonnull %0, i32 65536, ptr undef) #9
   ret void
 }
 
@@ -129,46 +129,41 @@ entry:
   %3 = load ptr, ptr %2, align 4
   %4 = getelementptr inbounds nuw i8, ptr %0, i32 8
   %5 = load ptr, ptr %4, align 4
-  call void %5(i32 %1, ptr %3) #11
+  call void %5(i32 %1, ptr %3) #9
-  call void @runtime.deadlock(ptr undef) #11
+  call void @runtime.deadlock(ptr undef) #9
   unreachable
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.recoverBuiltinGoroutine(ptr %context) unnamed_addr #1 {
+define hidden void @main.recoverBuiltinGoroutine(ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.copyBuiltinGoroutine(ptr %dst.data, i32 %dst.len, i32 %dst.cap, ptr %src.data, i32 %src.len, i32 %src.cap, ptr %context) unnamed_addr #1 {
+define hidden void @main.copyBuiltinGoroutine(ptr %dst.data, i32 %dst.len, i32 %dst.cap, ptr %src.data, i32 %src.len, i32 %src.cap, ptr %context) unnamed_addr #2 {
 entry:
-  %copy.n = call i32 @llvm.umin.i32(i32 %dst.len, i32 %src.len)
+  %copy.n = call i32 @runtime.sliceCopy(ptr %dst.data, ptr %src.data, i32 %dst.len, i32 %src.len, i32 1, ptr undef) #9
-  call void @llvm.memmove.p0.p0.i32(ptr align 1 %dst.data, ptr align 1 %src.data, i32 %copy.n, i1 false)
   ret void
 }
 
-; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
+declare i32 @runtime.sliceCopy(ptr nocapture writeonly, ptr nocapture readonly, i32, i32, i32, ptr) #1
-declare i32 @llvm.umin.i32(i32, i32) #7
-
-; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
-declare void @llvm.memmove.p0.p0.i32(ptr nocapture writeonly, ptr nocapture readonly, i32, i1 immarg) #8
 
 ; Function Attrs: nounwind
-define hidden void @main.closeBuiltinGoroutine(ptr dereferenceable_or_null(36) %ch, ptr %context) unnamed_addr #1 {
+define hidden void @main.closeBuiltinGoroutine(ptr dereferenceable_or_null(36) %ch, ptr %context) unnamed_addr #2 {
 entry:
-  call void @runtime.chanClose(ptr %ch, ptr undef) #11
+  call void @runtime.chanClose(ptr %ch, ptr undef) #9
   ret void
 }
 
-declare void @runtime.chanClose(ptr dereferenceable_or_null(36), ptr) #0
+declare void @runtime.chanClose(ptr dereferenceable_or_null(36), ptr) #1
 
 ; Function Attrs: nounwind
-define hidden void @main.startInterfaceMethod(ptr %itf.typecode, ptr %itf.value, ptr %context) unnamed_addr #1 {
+define hidden void @main.startInterfaceMethod(ptr %itf.typecode, ptr %itf.value, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
-  %0 = call align 4 dereferenceable(16) ptr @runtime.alloc(i32 16, ptr null, ptr undef) #11
+  %0 = call align 4 dereferenceable(16) ptr @runtime.alloc(i32 16, ptr null, ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %0, ptr nonnull %stackalloc, ptr undef) #11
+  call void @runtime.trackPointer(ptr nonnull %0, ptr nonnull %stackalloc, ptr undef) #9
   store ptr %itf.value, ptr %0, align 4
   %1 = getelementptr inbounds nuw i8, ptr %0, i32 4
   store ptr @"main$string", ptr %1, align 4
@@ -176,14 +171,14 @@ entry:
   store i32 4, ptr %2, align 4
   %3 = getelementptr inbounds nuw i8, ptr %0, i32 12
   store ptr %itf.typecode, ptr %3, align 4
-  call void @"internal/task.start"(i32 ptrtoint (ptr @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper" to i32), ptr nonnull %0, i32 65536, ptr undef) #11
+  call void @"internal/task.start"(i32 ptrtoint (ptr @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper" to i32), ptr nonnull %0, i32 65536, ptr undef) #9
   ret void
 }
 
-declare void @"interface:{Print:func:{basic:string}{}}.Print$invoke"(ptr, ptr, i32, ptr, ptr) #9
+declare void @"interface:{Print:func:{basic:string}{}}.Print$invoke"(ptr, ptr, i32, ptr, ptr) #7
 
 ; Function Attrs: nounwind
-define linkonce_odr void @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper"(ptr %0) unnamed_addr #10 {
+define linkonce_odr void @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper"(ptr %0) unnamed_addr #8 {
 entry:
   %1 = load ptr, ptr %0, align 4
   %2 = getelementptr inbounds nuw i8, ptr %0, i32 4
@@ -192,20 +187,18 @@ entry:
   %5 = load i32, ptr %4, align 4
   %6 = getelementptr inbounds nuw i8, ptr %0, i32 12
   %7 = load ptr, ptr %6, align 4
-  call void @"interface:{Print:func:{basic:string}{}}.Print$invoke"(ptr %1, ptr %3, i32 %5, ptr %7, ptr undef) #11
+  call void @"interface:{Print:func:{basic:string}{}}.Print$invoke"(ptr %1, ptr %3, i32 %5, ptr %7, ptr undef) #9
-  call void @runtime.deadlock(ptr undef) #11
+  call void @runtime.deadlock(ptr undef) #9
   unreachable
 }
 
-attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-gowrapper"="main.regularFunction" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #3 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-gowrapper"="main.inlineFunctionGoroutine$1" }
+attributes #3 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-gowrapper"="main.regularFunction" }
-attributes #4 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #4 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-gowrapper"="main.inlineFunctionGoroutine$1" }
 attributes #5 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-gowrapper"="main.closureFunctionGoroutine$1" }
 attributes #6 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-gowrapper" }
-attributes #7 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
+attributes #7 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-invoke"="reflect/methods.Print(string)" "tinygo-methods"="reflect/methods.Print(string)" }
-attributes #8 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
+attributes #8 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-gowrapper"="interface:{Print:func:{basic:string}{}}.Print$invoke" }
-attributes #9 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-invoke"="reflect/methods.Print(string)" "tinygo-methods"="reflect/methods.Print(string)" }
+attributes #9 = { nounwind }
-attributes #10 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-gowrapper"="interface:{Print:func:{basic:string}{}}.Print$invoke" }
-attributes #11 = { nounwind }

compiler/testdata/interface.ll

@@ -9,64 +9,65 @@ target triple = "wasm32-unknown-wasi"
 @"reflect/types.type:basic:int" = linkonce_odr constant { i8, ptr } { i8 -62, ptr @"reflect/types.type:pointer:basic:int" }, align 4
 @"reflect/types.type:pointer:basic:int" = linkonce_odr constant { i8, i16, ptr } { i8 -43, i16 0, ptr @"reflect/types.type:basic:int" }, align 4
 @"reflect/types.type:pointer:named:error" = linkonce_odr constant { i8, i16, ptr } { i8 -43, i16 0, ptr @"reflect/types.type:named:error" }, align 4
-@"reflect/types.signature:Error:func:{}{basic:string}" = linkonce_odr constant i8 0, align 1
+@"reflect/types.type:named:error" = linkonce_odr constant { i8, i16, ptr, ptr, ptr, [7 x i8] } { i8 116, i16 1, ptr @"reflect/types.type:pointer:named:error", ptr @"reflect/types.type:interface:{Error:func:{}{basic:string}}", ptr @"reflect/types.type.pkgpath.empty", [7 x i8] c".error\00" }, align 4
-@"reflect/types.type:named:error" = linkonce_odr constant { i8, i16, ptr, ptr, ptr, { i32, [1 x ptr] }, [7 x i8] } { i8 116, i16 -32767, ptr @"reflect/types.type:pointer:named:error", ptr @"reflect/types.type:interface:{Error:func:{}{basic:string}}", ptr @"reflect/types.type.pkgpath.empty", { i32, [1 x ptr] } { i32 1, [1 x ptr] [ptr @"reflect/types.signature:Error:func:{}{basic:string}"] }, [7 x i8] c".error\00" }, align 4
 @"reflect/types.type.pkgpath.empty" = linkonce_odr unnamed_addr constant [1 x i8] zeroinitializer, align 1
-@"reflect/types.type:interface:{Error:func:{}{basic:string}}" = linkonce_odr constant { i8, ptr, { i32, [1 x ptr] } } { i8 84, ptr @"reflect/types.type:pointer:interface:{Error:func:{}{basic:string}}", { i32, [1 x ptr] } { i32 1, [1 x ptr] [ptr @"reflect/types.signature:Error:func:{}{basic:string}"] } }, align 4
+@"reflect/types.type:interface:{Error:func:{}{basic:string}}" = linkonce_odr constant { i8, ptr } { i8 84, ptr @"reflect/types.type:pointer:interface:{Error:func:{}{basic:string}}" }, align 4
 @"reflect/types.type:pointer:interface:{Error:func:{}{basic:string}}" = linkonce_odr constant { i8, i16, ptr } { i8 -43, i16 0, ptr @"reflect/types.type:interface:{Error:func:{}{basic:string}}" }, align 4
 @"reflect/types.type:pointer:interface:{String:func:{}{basic:string}}" = linkonce_odr constant { i8, i16, ptr } { i8 -43, i16 0, ptr @"reflect/types.type:interface:{String:func:{}{basic:string}}" }, align 4
-@"reflect/types.signature:String:func:{}{basic:string}" = linkonce_odr constant i8 0, align 1
+@"reflect/types.type:interface:{String:func:{}{basic:string}}" = linkonce_odr constant { i8, ptr } { i8 84, ptr @"reflect/types.type:pointer:interface:{String:func:{}{basic:string}}" }, align 4
-@"reflect/types.type:interface:{String:func:{}{basic:string}}" = linkonce_odr constant { i8, ptr, { i32, [1 x ptr] } } { i8 84, ptr @"reflect/types.type:pointer:interface:{String:func:{}{basic:string}}", { i32, [1 x ptr] } { i32 1, [1 x ptr] [ptr @"reflect/types.signature:String:func:{}{basic:string}"] } }, align 4
 @"reflect/types.typeid:basic:int" = external constant i8
 
-declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #0
+; Function Attrs: allockind("alloc,zeroed") allocsize(0)
+declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #0
+
+declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #1
 
 ; Function Attrs: nounwind
-define hidden void @main.init(ptr %context) unnamed_addr #1 {
+define hidden void @main.init(ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden %runtime._interface @main.simpleType(ptr %context) unnamed_addr #1 {
+define hidden %runtime._interface @main.simpleType(ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
-  call void @runtime.trackPointer(ptr nonnull @"reflect/types.type:basic:int", ptr nonnull %stackalloc, ptr undef) #6
+  call void @runtime.trackPointer(ptr nonnull @"reflect/types.type:basic:int", ptr nonnull %stackalloc, ptr undef) #7
-  call void @runtime.trackPointer(ptr null, ptr nonnull %stackalloc, ptr undef) #6
+  call void @runtime.trackPointer(ptr null, ptr nonnull %stackalloc, ptr undef) #7
   ret %runtime._interface { ptr @"reflect/types.type:basic:int", ptr null }
 }
 
 ; Function Attrs: nounwind
-define hidden %runtime._interface @main.pointerType(ptr %context) unnamed_addr #1 {
+define hidden %runtime._interface @main.pointerType(ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
-  call void @runtime.trackPointer(ptr nonnull @"reflect/types.type:pointer:basic:int", ptr nonnull %stackalloc, ptr undef) #6
+  call void @runtime.trackPointer(ptr nonnull @"reflect/types.type:pointer:basic:int", ptr nonnull %stackalloc, ptr undef) #7
-  call void @runtime.trackPointer(ptr null, ptr nonnull %stackalloc, ptr undef) #6
+  call void @runtime.trackPointer(ptr null, ptr nonnull %stackalloc, ptr undef) #7
   ret %runtime._interface { ptr @"reflect/types.type:pointer:basic:int", ptr null }
 }
 
 ; Function Attrs: nounwind
-define hidden %runtime._interface @main.interfaceType(ptr %context) unnamed_addr #1 {
+define hidden %runtime._interface @main.interfaceType(ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
-  call void @runtime.trackPointer(ptr nonnull @"reflect/types.type:pointer:named:error", ptr nonnull %stackalloc, ptr undef) #6
+  call void @runtime.trackPointer(ptr nonnull @"reflect/types.type:pointer:named:error", ptr nonnull %stackalloc, ptr undef) #7
-  call void @runtime.trackPointer(ptr null, ptr nonnull %stackalloc, ptr undef) #6
+  call void @runtime.trackPointer(ptr null, ptr nonnull %stackalloc, ptr undef) #7
   ret %runtime._interface { ptr @"reflect/types.type:pointer:named:error", ptr null }
 }
 
 ; Function Attrs: nounwind
-define hidden %runtime._interface @main.anonymousInterfaceType(ptr %context) unnamed_addr #1 {
+define hidden %runtime._interface @main.anonymousInterfaceType(ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
-  call void @runtime.trackPointer(ptr nonnull @"reflect/types.type:pointer:interface:{String:func:{}{basic:string}}", ptr nonnull %stackalloc, ptr undef) #6
+  call void @runtime.trackPointer(ptr nonnull @"reflect/types.type:pointer:interface:{String:func:{}{basic:string}}", ptr nonnull %stackalloc, ptr undef) #7
-  call void @runtime.trackPointer(ptr null, ptr nonnull %stackalloc, ptr undef) #6
+  call void @runtime.trackPointer(ptr null, ptr nonnull %stackalloc, ptr undef) #7
   ret %runtime._interface { ptr @"reflect/types.type:pointer:interface:{String:func:{}{basic:string}}", ptr null }
 }
 
 ; Function Attrs: nounwind
-define hidden i1 @main.isInt(ptr %itf.typecode, ptr %itf.value, ptr %context) unnamed_addr #1 {
+define hidden i1 @main.isInt(ptr %itf.typecode, ptr %itf.value, ptr %context) unnamed_addr #2 {
 entry:
-  %typecode = call i1 @runtime.typeAssert(ptr %itf.typecode, ptr nonnull @"reflect/types.typeid:basic:int", ptr undef) #6
+  %typecode = call i1 @runtime.typeAssert(ptr %itf.typecode, ptr nonnull @"reflect/types.typeid:basic:int", ptr undef) #7
   br i1 %typecode, label %typeassert.ok, label %typeassert.next
 
 typeassert.next:                                  ; preds = %typeassert.ok, %entry
@@ -76,12 +77,12 @@ typeassert.ok:                                    ; preds = %entry
   br label %typeassert.next
 }
 
-declare i1 @runtime.typeAssert(ptr, ptr dereferenceable_or_null(1), ptr) #0
+declare i1 @runtime.typeAssert(ptr, ptr dereferenceable_or_null(1), ptr) #1
 
 ; Function Attrs: nounwind
-define hidden i1 @main.isError(ptr %itf.typecode, ptr %itf.value, ptr %context) unnamed_addr #1 {
+define hidden i1 @main.isError(ptr %itf.typecode, ptr %itf.value, ptr %context) unnamed_addr #2 {
 entry:
-  %0 = call i1 @"interface:{Error:func:{}{basic:string}}.$typeassert"(ptr %itf.typecode) #6
+  %0 = call i1 @"interface:{Error:func:{}{basic:string}}.$typeassert"(ptr %itf.typecode) #7
   br i1 %0, label %typeassert.ok, label %typeassert.next
 
 typeassert.next:                                  ; preds = %typeassert.ok, %entry
@@ -91,12 +92,12 @@ typeassert.ok:                                    ; preds = %entry
   br label %typeassert.next
 }
 
-declare i1 @"interface:{Error:func:{}{basic:string}}.$typeassert"(ptr) #2
+declare i1 @"interface:{Error:func:{}{basic:string}}.$typeassert"(ptr) #3
 
 ; Function Attrs: nounwind
-define hidden i1 @main.isStringer(ptr %itf.typecode, ptr %itf.value, ptr %context) unnamed_addr #1 {
+define hidden i1 @main.isStringer(ptr %itf.typecode, ptr %itf.value, ptr %context) unnamed_addr #2 {
 entry:
-  %0 = call i1 @"interface:{String:func:{}{basic:string}}.$typeassert"(ptr %itf.typecode) #6
+  %0 = call i1 @"interface:{String:func:{}{basic:string}}.$typeassert"(ptr %itf.typecode) #7
   br i1 %0, label %typeassert.ok, label %typeassert.next
 
 typeassert.next:                                  ; preds = %typeassert.ok, %entry
@@ -106,33 +107,34 @@ typeassert.ok:                                    ; preds = %entry
   br label %typeassert.next
 }
 
-declare i1 @"interface:{String:func:{}{basic:string}}.$typeassert"(ptr) #3
+declare i1 @"interface:{String:func:{}{basic:string}}.$typeassert"(ptr) #4
 
 ; Function Attrs: nounwind
-define hidden i8 @main.callFooMethod(ptr %itf.typecode, ptr %itf.value, ptr %context) unnamed_addr #1 {
+define hidden i8 @main.callFooMethod(ptr %itf.typecode, ptr %itf.value, ptr %context) unnamed_addr #2 {
 entry:
-  %0 = call i8 @"interface:{String:func:{}{basic:string},main.foo:func:{basic:int}{basic:uint8}}.foo$invoke"(ptr %itf.value, i32 3, ptr %itf.typecode, ptr undef) #6
+  %0 = call i8 @"interface:{String:func:{}{basic:string},main.foo:func:{basic:int}{basic:uint8}}.foo$invoke"(ptr %itf.value, i32 3, ptr %itf.typecode, ptr undef) #7
   ret i8 %0
 }
 
-declare i8 @"interface:{String:func:{}{basic:string},main.foo:func:{basic:int}{basic:uint8}}.foo$invoke"(ptr, i32, ptr, ptr) #4
+declare i8 @"interface:{String:func:{}{basic:string},main.foo:func:{basic:int}{basic:uint8}}.foo$invoke"(ptr, i32, ptr, ptr) #5
 
 ; Function Attrs: nounwind
-define hidden %runtime._string @main.callErrorMethod(ptr %itf.typecode, ptr %itf.value, ptr %context) unnamed_addr #1 {
+define hidden %runtime._string @main.callErrorMethod(ptr %itf.typecode, ptr %itf.value, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
-  %0 = call %runtime._string @"interface:{Error:func:{}{basic:string}}.Error$invoke"(ptr %itf.value, ptr %itf.typecode, ptr undef) #6
+  %0 = call %runtime._string @"interface:{Error:func:{}{basic:string}}.Error$invoke"(ptr %itf.value, ptr %itf.typecode, ptr undef) #7
   %1 = extractvalue %runtime._string %0, 0
-  call void @runtime.trackPointer(ptr %1, ptr nonnull %stackalloc, ptr undef) #6
+  call void @runtime.trackPointer(ptr %1, ptr nonnull %stackalloc, ptr undef) #7
   ret %runtime._string %0
 }
 
-declare %runtime._string @"interface:{Error:func:{}{basic:string}}.Error$invoke"(ptr, ptr, ptr) #5
+declare %runtime._string @"interface:{Error:func:{}{basic:string}}.Error$invoke"(ptr, ptr, ptr) #6
 
-attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-methods"="reflect/methods.Error() string" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #3 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-methods"="reflect/methods.String() string" }
+attributes #3 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-methods"="reflect/methods.Error() string" }
-attributes #4 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-invoke"="main.$methods.foo(int) uint8" "tinygo-methods"="reflect/methods.String() string; main.$methods.foo(int) uint8" }
+attributes #4 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-methods"="reflect/methods.String() string" }
-attributes #5 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-invoke"="reflect/methods.Error() string" "tinygo-methods"="reflect/methods.Error() string" }
+attributes #5 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-invoke"="main.$methods.foo(int) uint8" "tinygo-methods"="reflect/methods.String() string; main.$methods.foo(int) uint8" }
-attributes #6 = { nounwind }
+attributes #6 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-invoke"="reflect/methods.Error() string" "tinygo-methods"="reflect/methods.Error() string" }
+attributes #7 = { nounwind }

compiler/testdata/pointer.ll

@@ -3,44 +3,48 @@ source_filename = "pointer.go"
 target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
 target triple = "wasm32-unknown-wasi"
 
-declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #0
+; Function Attrs: allockind("alloc,zeroed") allocsize(0)
+declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #0
+
+declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #1
 
 ; Function Attrs: nounwind
-define hidden void @main.init(ptr %context) unnamed_addr #1 {
+define hidden void @main.init(ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden [0 x i32] @main.pointerDerefZero(ptr %x, ptr %context) unnamed_addr #1 {
+define hidden [0 x i32] @main.pointerDerefZero(ptr %x, ptr %context) unnamed_addr #2 {
 entry:
   ret [0 x i32] zeroinitializer
 }
 
 ; Function Attrs: nounwind
-define hidden ptr @main.pointerCastFromUnsafe(ptr %x, ptr %context) unnamed_addr #1 {
+define hidden ptr @main.pointerCastFromUnsafe(ptr %x, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
-  call void @runtime.trackPointer(ptr %x, ptr nonnull %stackalloc, ptr undef) #2
+  call void @runtime.trackPointer(ptr %x, ptr nonnull %stackalloc, ptr undef) #3
   ret ptr %x
 }
 
 ; Function Attrs: nounwind
-define hidden ptr @main.pointerCastToUnsafe(ptr dereferenceable_or_null(4) %x, ptr %context) unnamed_addr #1 {
+define hidden ptr @main.pointerCastToUnsafe(ptr dereferenceable_or_null(4) %x, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
-  call void @runtime.trackPointer(ptr %x, ptr nonnull %stackalloc, ptr undef) #2
+  call void @runtime.trackPointer(ptr %x, ptr nonnull %stackalloc, ptr undef) #3
   ret ptr %x
 }
 
 ; Function Attrs: nounwind
-define hidden ptr @main.pointerCastToUnsafeNoop(ptr dereferenceable_or_null(1) %x, ptr %context) unnamed_addr #1 {
+define hidden ptr @main.pointerCastToUnsafeNoop(ptr dereferenceable_or_null(1) %x, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
-  call void @runtime.trackPointer(ptr %x, ptr nonnull %stackalloc, ptr undef) #2
+  call void @runtime.trackPointer(ptr %x, ptr nonnull %stackalloc, ptr undef) #3
   ret ptr %x
 }
 
-attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #3 = { nounwind }

compiler/testdata/pragma.go

@@ -115,8 +115,3 @@ func doesNotEscapeParam(a *int, b []int, c chan int, d *[0]byte)
 //go:noescape
 func stillEscapes(a *int, b []int, c chan int, d *[0]byte) {
 }
-
-//go:noheap
-func doesHeapAlloc() *int {
-	return new(int)
-}

compiler/testdata/pragma.ll

@@ -11,105 +11,95 @@ target triple = "wasm32-unknown-wasi"
 @undefinedGlobalNotInSection = external global i32, align 4
 @main.multipleGlobalPragmas = hidden global i32 0, section ".global_section", align 1024
 
-declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #0
+; Function Attrs: allockind("alloc,zeroed") allocsize(0)
+declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #0
+
+declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #1
 
 ; Function Attrs: nounwind
-define hidden void @main.init(ptr %context) unnamed_addr #1 {
+define hidden void @main.init(ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define void @extern_func() #2 {
+define void @extern_func() #3 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @somepkg.someFunction1(ptr %context) unnamed_addr #1 {
+define hidden void @somepkg.someFunction1(ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
-declare void @somepkg.someFunction2(ptr) #0
+declare void @somepkg.someFunction2(ptr) #1
 
 ; Function Attrs: inlinehint nounwind
-define hidden void @main.inlineFunc(ptr %context) unnamed_addr #3 {
+define hidden void @main.inlineFunc(ptr %context) unnamed_addr #4 {
 entry:
   ret void
 }
 
 ; Function Attrs: noinline nounwind
-define hidden void @main.noinlineFunc(ptr %context) unnamed_addr #4 {
+define hidden void @main.noinlineFunc(ptr %context) unnamed_addr #5 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.useGeneric(ptr %context) unnamed_addr #1 {
+define hidden void @main.useGeneric(ptr %context) unnamed_addr #2 {
 entry:
   call void @"main.noinlineGenericFunc[int8]"(ptr undef)
   ret void
 }
 
 ; Function Attrs: noinline nounwind
-define linkonce_odr hidden void @"main.noinlineGenericFunc[int8]"(ptr %context) unnamed_addr #4 {
+define linkonce_odr hidden void @"main.noinlineGenericFunc[int8]"(ptr %context) unnamed_addr #5 {
 entry:
   ret void
 }
 
 ; Function Attrs: noinline nounwind
-define hidden void @main.functionInSection(ptr %context) unnamed_addr #4 section ".special_function_section" {
+define hidden void @main.functionInSection(ptr %context) unnamed_addr #5 section ".special_function_section" {
 entry:
   ret void
 }
 
 ; Function Attrs: noinline nounwind
-define void @exportedFunctionInSection() #5 section ".special_function_section" {
+define void @exportedFunctionInSection() #6 section ".special_function_section" {
 entry:
   ret void
 }
 
-declare void @main.declaredImport() #6
+declare void @main.declaredImport() #7
 
-declare void @imported() #7
+declare void @imported() #8
 
 ; Function Attrs: nounwind
-define void @exported() #8 {
+define void @exported() #9 {
 entry:
   ret void
 }
 
-declare void @main.undefinedFunctionNotInSection(ptr) #0
+declare void @main.undefinedFunctionNotInSection(ptr) #1
 
-declare void @main.doesNotEscapeParam(ptr nocapture dereferenceable_or_null(4), ptr nocapture, i32, i32, ptr nocapture dereferenceable_or_null(36), ptr nocapture, ptr) #0
+declare void @main.doesNotEscapeParam(ptr nocapture dereferenceable_or_null(4), ptr nocapture, i32, i32, ptr nocapture dereferenceable_or_null(36), ptr nocapture, ptr) #1
 
 ; Function Attrs: nounwind
-define hidden void @main.stillEscapes(ptr dereferenceable_or_null(4) %a, ptr %b.data, i32 %b.len, i32 %b.cap, ptr dereferenceable_or_null(36) %c, ptr %d, ptr %context) unnamed_addr #1 {
+define hidden void @main.stillEscapes(ptr dereferenceable_or_null(4) %a, ptr %b.data, i32 %b.len, i32 %b.cap, ptr dereferenceable_or_null(36) %c, ptr %d, ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
-; Function Attrs: nounwind
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-define hidden ptr @main.doesHeapAlloc(ptr %context) unnamed_addr #1 {
+attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-entry:
+attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-  %stackalloc = alloca i8, align 1
+attributes #3 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "wasm-export-name"="extern_func" }
-  %new = call align 4 dereferenceable(4) ptr @runtime.alloc_noheap(i32 4, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #10
+attributes #4 = { inlinehint nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-  call void @runtime.trackPointer(ptr nonnull %new, ptr nonnull %stackalloc, ptr undef) #10
+attributes #5 = { noinline nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-  ret ptr %new
+attributes #6 = { noinline nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "wasm-export-name"="exportedFunctionInSection" }
-}
+attributes #7 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "wasm-import-module"="modulename" "wasm-import-name"="import1" }
-
+attributes #8 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "wasm-import-module"="foobar" "wasm-import-name"="imported" }
-; Function Attrs: allockind("alloc,zeroed") allocsize(0)
+attributes #9 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "wasm-export-name"="exported" }
-declare noalias nonnull ptr @runtime.alloc_noheap(i32, ptr, ptr) #9
-
-attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "wasm-export-name"="extern_func" }
-attributes #3 = { inlinehint nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #4 = { noinline nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #5 = { noinline nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "wasm-export-name"="exportedFunctionInSection" }
-attributes #6 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "wasm-import-module"="modulename" "wasm-import-name"="import1" }
-attributes #7 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "wasm-import-module"="foobar" "wasm-import-name"="imported" }
-attributes #8 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "wasm-export-name"="exported" }
-attributes #9 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #10 = { nounwind }

compiler/testdata/slice.ll

@@ -3,28 +3,31 @@ source_filename = "slice.go"
 target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
 target triple = "wasm32-unknown-wasi"
 
-declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #0
+; Function Attrs: allockind("alloc,zeroed") allocsize(0)
+declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #0
+
+declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #1
 
 ; Function Attrs: nounwind
-define hidden void @main.init(ptr %context) unnamed_addr #1 {
+define hidden void @main.init(ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.sliceLen(ptr %ints.data, i32 %ints.len, i32 %ints.cap, ptr %context) unnamed_addr #1 {
+define hidden i32 @main.sliceLen(ptr %ints.data, i32 %ints.len, i32 %ints.cap, ptr %context) unnamed_addr #2 {
 entry:
   ret i32 %ints.len
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.sliceCap(ptr %ints.data, i32 %ints.len, i32 %ints.cap, ptr %context) unnamed_addr #1 {
+define hidden i32 @main.sliceCap(ptr %ints.data, i32 %ints.len, i32 %ints.cap, ptr %context) unnamed_addr #2 {
 entry:
   ret i32 %ints.cap
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.sliceElement(ptr %ints.data, i32 %ints.len, i32 %ints.cap, i32 %index, ptr %context) unnamed_addr #1 {
+define hidden i32 @main.sliceElement(ptr %ints.data, i32 %ints.len, i32 %ints.cap, i32 %index, ptr %context) unnamed_addr #2 {
 entry:
   %.not = icmp ult i32 %index, %ints.len
   br i1 %.not, label %lookup.next, label %lookup.throw
@@ -35,93 +38,84 @@ lookup.next:                                      ; preds = %entry
   ret i32 %1
 
 lookup.throw:                                     ; preds = %entry
-  call void @runtime.lookupPanic(ptr undef) #5
+  call void @runtime.lookupPanic(ptr undef) #3
   unreachable
 }
 
-declare void @runtime.lookupPanic(ptr) #0
+declare void @runtime.lookupPanic(ptr) #1
 
 ; Function Attrs: nounwind
-define hidden { ptr, i32, i32 } @main.sliceAppendValues(ptr %ints.data, i32 %ints.len, i32 %ints.cap, ptr %context) unnamed_addr #1 {
+define hidden { ptr, i32, i32 } @main.sliceAppendValues(ptr %ints.data, i32 %ints.len, i32 %ints.cap, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
-  %varargs = call align 4 dereferenceable(12) ptr @runtime.alloc(i32 12, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #5
+  %varargs = call align 4 dereferenceable(12) ptr @runtime.alloc(i32 12, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
-  call void @runtime.trackPointer(ptr nonnull %varargs, ptr nonnull %stackalloc, ptr undef) #5
+  call void @runtime.trackPointer(ptr nonnull %varargs, ptr nonnull %stackalloc, ptr undef) #3
   store i32 1, ptr %varargs, align 4
   %0 = getelementptr inbounds nuw i8, ptr %varargs, i32 4
   store i32 2, ptr %0, align 4
   %1 = getelementptr inbounds nuw i8, ptr %varargs, i32 8
   store i32 3, ptr %1, align 4
-  %append.new = call { ptr, i32, i32 } @runtime.sliceAppend(ptr %ints.data, ptr nonnull %varargs, i32 %ints.len, i32 %ints.cap, i32 3, i32 4, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #5
+  %append.new = call { ptr, i32, i32 } @runtime.sliceAppend(ptr %ints.data, ptr nonnull %varargs, i32 %ints.len, i32 %ints.cap, i32 3, i32 4, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
   %append.newPtr = extractvalue { ptr, i32, i32 } %append.new, 0
   %append.newLen = extractvalue { ptr, i32, i32 } %append.new, 1
   %append.newCap = extractvalue { ptr, i32, i32 } %append.new, 2
   %2 = insertvalue { ptr, i32, i32 } undef, ptr %append.newPtr, 0
   %3 = insertvalue { ptr, i32, i32 } %2, i32 %append.newLen, 1
   %4 = insertvalue { ptr, i32, i32 } %3, i32 %append.newCap, 2
-  call void @runtime.trackPointer(ptr %append.newPtr, ptr nonnull %stackalloc, ptr undef) #5
+  call void @runtime.trackPointer(ptr %append.newPtr, ptr nonnull %stackalloc, ptr undef) #3
   ret { ptr, i32, i32 } %4
 }
 
-; Function Attrs: allockind("alloc,zeroed") allocsize(0)
+declare { ptr, i32, i32 } @runtime.sliceAppend(ptr, ptr nocapture readonly, i32, i32, i32, i32, ptr, ptr) #1
-declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #2
-
-declare { ptr, i32, i32 } @runtime.sliceAppend(ptr, ptr nocapture readonly, i32, i32, i32, i32, ptr, ptr) #0
 
 ; Function Attrs: nounwind
-define hidden { ptr, i32, i32 } @main.sliceAppendSlice(ptr %ints.data, i32 %ints.len, i32 %ints.cap, ptr %added.data, i32 %added.len, i32 %added.cap, ptr %context) unnamed_addr #1 {
+define hidden { ptr, i32, i32 } @main.sliceAppendSlice(ptr %ints.data, i32 %ints.len, i32 %ints.cap, ptr %added.data, i32 %added.len, i32 %added.cap, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
-  %append.new = call { ptr, i32, i32 } @runtime.sliceAppend(ptr %ints.data, ptr %added.data, i32 %ints.len, i32 %ints.cap, i32 %added.len, i32 4, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #5
+  %append.new = call { ptr, i32, i32 } @runtime.sliceAppend(ptr %ints.data, ptr %added.data, i32 %ints.len, i32 %ints.cap, i32 %added.len, i32 4, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
   %append.newPtr = extractvalue { ptr, i32, i32 } %append.new, 0
   %append.newLen = extractvalue { ptr, i32, i32 } %append.new, 1
   %append.newCap = extractvalue { ptr, i32, i32 } %append.new, 2
   %0 = insertvalue { ptr, i32, i32 } undef, ptr %append.newPtr, 0
   %1 = insertvalue { ptr, i32, i32 } %0, i32 %append.newLen, 1
   %2 = insertvalue { ptr, i32, i32 } %1, i32 %append.newCap, 2
-  call void @runtime.trackPointer(ptr %append.newPtr, ptr nonnull %stackalloc, ptr undef) #5
+  call void @runtime.trackPointer(ptr %append.newPtr, ptr nonnull %stackalloc, ptr undef) #3
   ret { ptr, i32, i32 } %2
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.sliceCopy(ptr %dst.data, i32 %dst.len, i32 %dst.cap, ptr %src.data, i32 %src.len, i32 %src.cap, ptr %context) unnamed_addr #1 {
+define hidden i32 @main.sliceCopy(ptr %dst.data, i32 %dst.len, i32 %dst.cap, ptr %src.data, i32 %src.len, i32 %src.cap, ptr %context) unnamed_addr #2 {
 entry:
-  %copy.n = call i32 @llvm.umin.i32(i32 %dst.len, i32 %src.len)
+  %copy.n = call i32 @runtime.sliceCopy(ptr %dst.data, ptr %src.data, i32 %dst.len, i32 %src.len, i32 4, ptr undef) #3
-  %copy.size = shl nuw i32 %copy.n, 2
-  call void @llvm.memmove.p0.p0.i32(ptr align 4 %dst.data, ptr align 4 %src.data, i32 %copy.size, i1 false)
   ret i32 %copy.n
 }
 
-; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
+declare i32 @runtime.sliceCopy(ptr nocapture writeonly, ptr nocapture readonly, i32, i32, i32, ptr) #1
-declare i32 @llvm.umin.i32(i32, i32) #3
-
-; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
-declare void @llvm.memmove.p0.p0.i32(ptr nocapture writeonly, ptr nocapture readonly, i32, i1 immarg) #4
 
 ; Function Attrs: nounwind
-define hidden { ptr, i32, i32 } @main.makeByteSlice(i32 %len, ptr %context) unnamed_addr #1 {
+define hidden { ptr, i32, i32 } @main.makeByteSlice(i32 %len, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
   %slice.maxcap = icmp slt i32 %len, 0
   br i1 %slice.maxcap, label %slice.throw, label %slice.next
 
 slice.next:                                       ; preds = %entry
-  %makeslice.buf = call align 1 ptr @runtime.alloc(i32 %len, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #5
+  %makeslice.buf = call align 1 ptr @runtime.alloc(i32 %len, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
   %0 = insertvalue { ptr, i32, i32 } undef, ptr %makeslice.buf, 0
   %1 = insertvalue { ptr, i32, i32 } %0, i32 %len, 1
   %2 = insertvalue { ptr, i32, i32 } %1, i32 %len, 2
-  call void @runtime.trackPointer(ptr nonnull %makeslice.buf, ptr nonnull %stackalloc, ptr undef) #5
+  call void @runtime.trackPointer(ptr nonnull %makeslice.buf, ptr nonnull %stackalloc, ptr undef) #3
   ret { ptr, i32, i32 } %2
 
 slice.throw:                                      ; preds = %entry
-  call void @runtime.slicePanic(ptr undef) #5
+  call void @runtime.slicePanic(ptr undef) #3
   unreachable
 }
 
-declare void @runtime.slicePanic(ptr) #0
+declare void @runtime.slicePanic(ptr) #1
 
 ; Function Attrs: nounwind
-define hidden { ptr, i32, i32 } @main.makeInt16Slice(i32 %len, ptr %context) unnamed_addr #1 {
+define hidden { ptr, i32, i32 } @main.makeInt16Slice(i32 %len, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
   %slice.maxcap = icmp slt i32 %len, 0
@@ -129,20 +123,20 @@ entry:
 
 slice.next:                                       ; preds = %entry
   %makeslice.cap = shl nuw i32 %len, 1
-  %makeslice.buf = call align 2 ptr @runtime.alloc(i32 %makeslice.cap, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #5
+  %makeslice.buf = call align 2 ptr @runtime.alloc(i32 %makeslice.cap, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
   %0 = insertvalue { ptr, i32, i32 } undef, ptr %makeslice.buf, 0
   %1 = insertvalue { ptr, i32, i32 } %0, i32 %len, 1
   %2 = insertvalue { ptr, i32, i32 } %1, i32 %len, 2
-  call void @runtime.trackPointer(ptr nonnull %makeslice.buf, ptr nonnull %stackalloc, ptr undef) #5
+  call void @runtime.trackPointer(ptr nonnull %makeslice.buf, ptr nonnull %stackalloc, ptr undef) #3
   ret { ptr, i32, i32 } %2
 
 slice.throw:                                      ; preds = %entry
-  call void @runtime.slicePanic(ptr undef) #5
+  call void @runtime.slicePanic(ptr undef) #3
   unreachable
 }
 
 ; Function Attrs: nounwind
-define hidden { ptr, i32, i32 } @main.makeArraySlice(i32 %len, ptr %context) unnamed_addr #1 {
+define hidden { ptr, i32, i32 } @main.makeArraySlice(i32 %len, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
   %slice.maxcap = icmp ugt i32 %len, 1431655765
@@ -150,20 +144,20 @@ entry:
 
 slice.next:                                       ; preds = %entry
   %makeslice.cap = mul i32 %len, 3
-  %makeslice.buf = call align 1 ptr @runtime.alloc(i32 %makeslice.cap, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #5
+  %makeslice.buf = call align 1 ptr @runtime.alloc(i32 %makeslice.cap, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
   %0 = insertvalue { ptr, i32, i32 } undef, ptr %makeslice.buf, 0
   %1 = insertvalue { ptr, i32, i32 } %0, i32 %len, 1
   %2 = insertvalue { ptr, i32, i32 } %1, i32 %len, 2
-  call void @runtime.trackPointer(ptr nonnull %makeslice.buf, ptr nonnull %stackalloc, ptr undef) #5
+  call void @runtime.trackPointer(ptr nonnull %makeslice.buf, ptr nonnull %stackalloc, ptr undef) #3
   ret { ptr, i32, i32 } %2
 
 slice.throw:                                      ; preds = %entry
-  call void @runtime.slicePanic(ptr undef) #5
+  call void @runtime.slicePanic(ptr undef) #3
   unreachable
 }
 
 ; Function Attrs: nounwind
-define hidden { ptr, i32, i32 } @main.makeInt32Slice(i32 %len, ptr %context) unnamed_addr #1 {
+define hidden { ptr, i32, i32 } @main.makeInt32Slice(i32 %len, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
   %slice.maxcap = icmp ugt i32 %len, 1073741823
@@ -171,39 +165,39 @@ entry:
 
 slice.next:                                       ; preds = %entry
   %makeslice.cap = shl nuw i32 %len, 2
-  %makeslice.buf = call align 4 ptr @runtime.alloc(i32 %makeslice.cap, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #5
+  %makeslice.buf = call align 4 ptr @runtime.alloc(i32 %makeslice.cap, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
   %0 = insertvalue { ptr, i32, i32 } undef, ptr %makeslice.buf, 0
   %1 = insertvalue { ptr, i32, i32 } %0, i32 %len, 1
   %2 = insertvalue { ptr, i32, i32 } %1, i32 %len, 2
-  call void @runtime.trackPointer(ptr nonnull %makeslice.buf, ptr nonnull %stackalloc, ptr undef) #5
+  call void @runtime.trackPointer(ptr nonnull %makeslice.buf, ptr nonnull %stackalloc, ptr undef) #3
   ret { ptr, i32, i32 } %2
 
 slice.throw:                                      ; preds = %entry
-  call void @runtime.slicePanic(ptr undef) #5
+  call void @runtime.slicePanic(ptr undef) #3
   unreachable
 }
 
 ; Function Attrs: nounwind
-define hidden ptr @main.Add32(ptr %p, i32 %len, ptr %context) unnamed_addr #1 {
+define hidden ptr @main.Add32(ptr %p, i32 %len, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
   %0 = getelementptr i8, ptr %p, i32 %len
-  call void @runtime.trackPointer(ptr %0, ptr nonnull %stackalloc, ptr undef) #5
+  call void @runtime.trackPointer(ptr %0, ptr nonnull %stackalloc, ptr undef) #3
   ret ptr %0
 }
 
 ; Function Attrs: nounwind
-define hidden ptr @main.Add64(ptr %p, i64 %len, ptr %context) unnamed_addr #1 {
+define hidden ptr @main.Add64(ptr %p, i64 %len, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
   %0 = trunc i64 %len to i32
   %1 = getelementptr i8, ptr %p, i32 %0
-  call void @runtime.trackPointer(ptr %1, ptr nonnull %stackalloc, ptr undef) #5
+  call void @runtime.trackPointer(ptr %1, ptr nonnull %stackalloc, ptr undef) #3
   ret ptr %1
 }
 
 ; Function Attrs: nounwind
-define hidden ptr @main.SliceToArray(ptr %s.data, i32 %s.len, i32 %s.cap, ptr %context) unnamed_addr #1 {
+define hidden ptr @main.SliceToArray(ptr %s.data, i32 %s.len, i32 %s.cap, ptr %context) unnamed_addr #2 {
 entry:
   %0 = icmp ult i32 %s.len, 4
   br i1 %0, label %slicetoarray.throw, label %slicetoarray.next
@@ -212,18 +206,18 @@ slicetoarray.next:                                ; preds = %entry
   ret ptr %s.data
 
 slicetoarray.throw:                               ; preds = %entry
-  call void @runtime.sliceToArrayPointerPanic(ptr undef) #5
+  call void @runtime.sliceToArrayPointerPanic(ptr undef) #3
   unreachable
 }
 
-declare void @runtime.sliceToArrayPointerPanic(ptr) #0
+declare void @runtime.sliceToArrayPointerPanic(ptr) #1
 
 ; Function Attrs: nounwind
-define hidden ptr @main.SliceToArrayConst(ptr %context) unnamed_addr #1 {
+define hidden ptr @main.SliceToArrayConst(ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
-  %makeslice = call align 4 dereferenceable(24) ptr @runtime.alloc(i32 24, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #5
+  %makeslice = call align 4 dereferenceable(24) ptr @runtime.alloc(i32 24, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
-  call void @runtime.trackPointer(ptr nonnull %makeslice, ptr nonnull %stackalloc, ptr undef) #5
+  call void @runtime.trackPointer(ptr nonnull %makeslice, ptr nonnull %stackalloc, ptr undef) #3
   br i1 false, label %slicetoarray.throw, label %slicetoarray.next
 
 slicetoarray.next:                                ; preds = %entry
@@ -234,7 +228,7 @@ slicetoarray.throw:                               ; preds = %entry
 }
 
 ; Function Attrs: nounwind
-define hidden { ptr, i32, i32 } @main.SliceInt(ptr dereferenceable_or_null(4) %ptr, i32 %len, ptr %context) unnamed_addr #1 {
+define hidden { ptr, i32, i32 } @main.SliceInt(ptr dereferenceable_or_null(4) %ptr, i32 %len, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
   %0 = icmp ugt i32 %len, 1073741823
@@ -248,18 +242,18 @@ unsafe.Slice.next:                                ; preds = %entry
   %5 = insertvalue { ptr, i32, i32 } undef, ptr %ptr, 0
   %6 = insertvalue { ptr, i32, i32 } %5, i32 %len, 1
   %7 = insertvalue { ptr, i32, i32 } %6, i32 %len, 2
-  call void @runtime.trackPointer(ptr %ptr, ptr nonnull %stackalloc, ptr undef) #5
+  call void @runtime.trackPointer(ptr %ptr, ptr nonnull %stackalloc, ptr undef) #3
   ret { ptr, i32, i32 } %7
 
 unsafe.Slice.throw:                               ; preds = %entry
-  call void @runtime.unsafeSlicePanic(ptr undef) #5
+  call void @runtime.unsafeSlicePanic(ptr undef) #3
   unreachable
 }
 
-declare void @runtime.unsafeSlicePanic(ptr) #0
+declare void @runtime.unsafeSlicePanic(ptr) #1
 
 ; Function Attrs: nounwind
-define hidden { ptr, i32, i32 } @main.SliceUint16(ptr dereferenceable_or_null(1) %ptr, i16 %len, ptr %context) unnamed_addr #1 {
+define hidden { ptr, i32, i32 } @main.SliceUint16(ptr dereferenceable_or_null(1) %ptr, i16 %len, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
   %0 = icmp eq ptr %ptr, null
@@ -272,16 +266,16 @@ unsafe.Slice.next:                                ; preds = %entry
   %4 = insertvalue { ptr, i32, i32 } undef, ptr %ptr, 0
   %5 = insertvalue { ptr, i32, i32 } %4, i32 %3, 1
   %6 = insertvalue { ptr, i32, i32 } %5, i32 %3, 2
-  call void @runtime.trackPointer(ptr %ptr, ptr nonnull %stackalloc, ptr undef) #5
+  call void @runtime.trackPointer(ptr %ptr, ptr nonnull %stackalloc, ptr undef) #3
   ret { ptr, i32, i32 } %6
 
 unsafe.Slice.throw:                               ; preds = %entry
-  call void @runtime.unsafeSlicePanic(ptr undef) #5
+  call void @runtime.unsafeSlicePanic(ptr undef) #3
   unreachable
 }
 
 ; Function Attrs: nounwind
-define hidden { ptr, i32, i32 } @main.SliceUint64(ptr dereferenceable_or_null(4) %ptr, i64 %len, ptr %context) unnamed_addr #1 {
+define hidden { ptr, i32, i32 } @main.SliceUint64(ptr dereferenceable_or_null(4) %ptr, i64 %len, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
   %0 = icmp ugt i64 %len, 1073741823
@@ -296,16 +290,16 @@ unsafe.Slice.next:                                ; preds = %entry
   %6 = insertvalue { ptr, i32, i32 } undef, ptr %ptr, 0
   %7 = insertvalue { ptr, i32, i32 } %6, i32 %5, 1
   %8 = insertvalue { ptr, i32, i32 } %7, i32 %5, 2
-  call void @runtime.trackPointer(ptr %ptr, ptr nonnull %stackalloc, ptr undef) #5
+  call void @runtime.trackPointer(ptr %ptr, ptr nonnull %stackalloc, ptr undef) #3
   ret { ptr, i32, i32 } %8
 
 unsafe.Slice.throw:                               ; preds = %entry
-  call void @runtime.unsafeSlicePanic(ptr undef) #5
+  call void @runtime.unsafeSlicePanic(ptr undef) #3
   unreachable
 }
 
 ; Function Attrs: nounwind
-define hidden { ptr, i32, i32 } @main.SliceInt64(ptr dereferenceable_or_null(4) %ptr, i64 %len, ptr %context) unnamed_addr #1 {
+define hidden { ptr, i32, i32 } @main.SliceInt64(ptr dereferenceable_or_null(4) %ptr, i64 %len, ptr %context) unnamed_addr #2 {
 entry:
   %stackalloc = alloca i8, align 1
   %0 = icmp ugt i64 %len, 1073741823
@@ -320,17 +314,15 @@ unsafe.Slice.next:                                ; preds = %entry
   %6 = insertvalue { ptr, i32, i32 } undef, ptr %ptr, 0
   %7 = insertvalue { ptr, i32, i32 } %6, i32 %5, 1
   %8 = insertvalue { ptr, i32, i32 } %7, i32 %5, 2
-  call void @runtime.trackPointer(ptr %ptr, ptr nonnull %stackalloc, ptr undef) #5
+  call void @runtime.trackPointer(ptr %ptr, ptr nonnull %stackalloc, ptr undef) #3
   ret { ptr, i32, i32 } %8
 
 unsafe.Slice.throw:                               ; preds = %entry
-  call void @runtime.unsafeSlicePanic(ptr undef) #5
+  call void @runtime.unsafeSlicePanic(ptr undef) #3
   unreachable
 }
 
-attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #3 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
+attributes #3 = { nounwind }
-attributes #4 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
-attributes #5 = { nounwind }

compiler/testdata/string.ll

@@ -7,34 +7,37 @@ target triple = "wasm32-unknown-wasi"
 
 @"main$string" = internal unnamed_addr constant [3 x i8] c"foo", align 1
 
-declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #0
+; Function Attrs: allockind("alloc,zeroed") allocsize(0)
+declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #0
+
+declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #1
 
 ; Function Attrs: nounwind
-define hidden void @main.init(ptr %context) unnamed_addr #1 {
+define hidden void @main.init(ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden %runtime._string @main.someString(ptr %context) unnamed_addr #1 {
+define hidden %runtime._string @main.someString(ptr %context) unnamed_addr #2 {
 entry:
   ret %runtime._string { ptr @"main$string", i32 3 }
 }
 
 ; Function Attrs: nounwind
-define hidden %runtime._string @main.zeroLengthString(ptr %context) unnamed_addr #1 {
+define hidden %runtime._string @main.zeroLengthString(ptr %context) unnamed_addr #2 {
 entry:
   ret %runtime._string zeroinitializer
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.stringLen(ptr readonly %s.data, i32 %s.len, ptr %context) unnamed_addr #1 {
+define hidden i32 @main.stringLen(ptr readonly %s.data, i32 %s.len, ptr %context) unnamed_addr #2 {
 entry:
   ret i32 %s.len
 }
 
 ; Function Attrs: nounwind
-define hidden i8 @main.stringIndex(ptr readonly %s.data, i32 %s.len, i32 %index, ptr %context) unnamed_addr #1 {
+define hidden i8 @main.stringIndex(ptr readonly %s.data, i32 %s.len, i32 %index, ptr %context) unnamed_addr #2 {
 entry:
   %.not = icmp ult i32 %index, %s.len
   br i1 %.not, label %lookup.next, label %lookup.throw
@@ -45,40 +48,40 @@ lookup.next:                                      ; preds = %entry
   ret i8 %1
 
 lookup.throw:                                     ; preds = %entry
-  call void @runtime.lookupPanic(ptr undef) #2
+  call void @runtime.lookupPanic(ptr undef) #3
   unreachable
 }
 
-declare void @runtime.lookupPanic(ptr) #0
+declare void @runtime.lookupPanic(ptr) #1
 
 ; Function Attrs: nounwind
-define hidden i1 @main.stringCompareEqual(ptr readonly %s1.data, i32 %s1.len, ptr readonly %s2.data, i32 %s2.len, ptr %context) unnamed_addr #1 {
+define hidden i1 @main.stringCompareEqual(ptr readonly %s1.data, i32 %s1.len, ptr readonly %s2.data, i32 %s2.len, ptr %context) unnamed_addr #2 {
 entry:
-  %0 = call i1 @runtime.stringEqual(ptr %s1.data, i32 %s1.len, ptr %s2.data, i32 %s2.len, ptr undef) #2
+  %0 = call i1 @runtime.stringEqual(ptr %s1.data, i32 %s1.len, ptr %s2.data, i32 %s2.len, ptr undef) #3
   ret i1 %0
 }
 
-declare i1 @runtime.stringEqual(ptr readonly, i32, ptr readonly, i32, ptr) #0
+declare i1 @runtime.stringEqual(ptr readonly, i32, ptr readonly, i32, ptr) #1
 
 ; Function Attrs: nounwind
-define hidden i1 @main.stringCompareUnequal(ptr readonly %s1.data, i32 %s1.len, ptr readonly %s2.data, i32 %s2.len, ptr %context) unnamed_addr #1 {
+define hidden i1 @main.stringCompareUnequal(ptr readonly %s1.data, i32 %s1.len, ptr readonly %s2.data, i32 %s2.len, ptr %context) unnamed_addr #2 {
 entry:
-  %0 = call i1 @runtime.stringEqual(ptr %s1.data, i32 %s1.len, ptr %s2.data, i32 %s2.len, ptr undef) #2
+  %0 = call i1 @runtime.stringEqual(ptr %s1.data, i32 %s1.len, ptr %s2.data, i32 %s2.len, ptr undef) #3
   %1 = xor i1 %0, true
   ret i1 %1
 }
 
 ; Function Attrs: nounwind
-define hidden i1 @main.stringCompareLarger(ptr readonly %s1.data, i32 %s1.len, ptr readonly %s2.data, i32 %s2.len, ptr %context) unnamed_addr #1 {
+define hidden i1 @main.stringCompareLarger(ptr readonly %s1.data, i32 %s1.len, ptr readonly %s2.data, i32 %s2.len, ptr %context) unnamed_addr #2 {
 entry:
-  %0 = call i1 @runtime.stringLess(ptr %s2.data, i32 %s2.len, ptr %s1.data, i32 %s1.len, ptr undef) #2
+  %0 = call i1 @runtime.stringLess(ptr %s2.data, i32 %s2.len, ptr %s1.data, i32 %s1.len, ptr undef) #3
   ret i1 %0
 }
 
-declare i1 @runtime.stringLess(ptr readonly, i32, ptr readonly, i32, ptr) #0
+declare i1 @runtime.stringLess(ptr readonly, i32, ptr readonly, i32, ptr) #1
 
 ; Function Attrs: nounwind
-define hidden i8 @main.stringLookup(ptr readonly %s.data, i32 %s.len, i8 %x, ptr %context) unnamed_addr #1 {
+define hidden i8 @main.stringLookup(ptr readonly %s.data, i32 %s.len, i8 %x, ptr %context) unnamed_addr #2 {
 entry:
   %0 = zext i8 %x to i32
   %.not = icmp ugt i32 %s.len, %0
@@ -90,10 +93,11 @@ lookup.next:                                      ; preds = %entry
   ret i8 %2
 
 lookup.throw:                                     ; preds = %entry
-  call void @runtime.lookupPanic(ptr undef) #2
+  call void @runtime.lookupPanic(ptr undef) #3
   unreachable
 }
 
-attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #3 = { nounwind }

compiler/testdata/zeromap.ll

@@ -5,16 +5,19 @@ target triple = "wasm32-unknown-wasi"
 
 %main.hasPadding = type { i1, i32, i1 }
 
-declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #0
+; Function Attrs: allockind("alloc,zeroed") allocsize(0)
+declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #0
+
+declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #1
 
 ; Function Attrs: nounwind
-define hidden void @main.init(ptr %context) unnamed_addr #1 {
+define hidden void @main.init(ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
 ; Function Attrs: noinline nounwind
-define hidden i32 @main.testZeroGet(ptr dereferenceable_or_null(48) %m, i1 %s.b1, i32 %s.i, i1 %s.b2, ptr %context) unnamed_addr #2 {
+define hidden i32 @main.testZeroGet(ptr dereferenceable_or_null(40) %m, i1 %s.b1, i32 %s.i, i1 %s.b2, ptr %context) unnamed_addr #3 {
 entry:
   %hashmap.key = alloca %main.hasPadding, align 8
   %hashmap.value = alloca i32, align 4
@@ -24,23 +27,29 @@ entry:
   call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %hashmap.value)
   call void @llvm.lifetime.start.p0(i64 12, ptr nonnull %hashmap.key)
   store %main.hasPadding %2, ptr %hashmap.key, align 4
-  %3 = call i1 @runtime.hashmapGenericGet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, i32 4, ptr undef) #4
+  %3 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 1
+  call void @runtime.memzero(ptr nonnull %3, i32 3, ptr undef) #5
+  %4 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 9
+  call void @runtime.memzero(ptr nonnull %4, i32 3, ptr undef) #5
+  %5 = call i1 @runtime.hashmapBinaryGet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, i32 4, ptr undef) #5
   call void @llvm.lifetime.end.p0(i64 12, ptr nonnull %hashmap.key)
-  %4 = load i32, ptr %hashmap.value, align 4
+  %6 = load i32, ptr %hashmap.value, align 4
   call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %hashmap.value)
-  ret i32 %4
+  ret i32 %6
 }
 
 ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
-declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3
+declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #4
 
-declare i1 @runtime.hashmapGenericGet(ptr dereferenceable_or_null(48), ptr nocapture, ptr nocapture, i32, ptr) #0
+declare void @runtime.memzero(ptr, i32, ptr) #1
+
+declare i1 @runtime.hashmapBinaryGet(ptr dereferenceable_or_null(40), ptr, ptr, i32, ptr) #1
 
 ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
-declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3
+declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #4
 
 ; Function Attrs: noinline nounwind
-define hidden void @main.testZeroSet(ptr dereferenceable_or_null(48) %m, i1 %s.b1, i32 %s.i, i1 %s.b2, ptr %context) unnamed_addr #2 {
+define hidden void @main.testZeroSet(ptr dereferenceable_or_null(40) %m, i1 %s.b1, i32 %s.i, i1 %s.b2, ptr %context) unnamed_addr #3 {
 entry:
   %hashmap.key = alloca %main.hasPadding, align 8
   %hashmap.value = alloca i32, align 4
@@ -51,16 +60,20 @@ entry:
   store i32 5, ptr %hashmap.value, align 4
   call void @llvm.lifetime.start.p0(i64 12, ptr nonnull %hashmap.key)
   store %main.hasPadding %2, ptr %hashmap.key, align 4
-  call void @runtime.hashmapGenericSet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, ptr undef) #4
+  %3 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 1
+  call void @runtime.memzero(ptr nonnull %3, i32 3, ptr undef) #5
+  %4 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 9
+  call void @runtime.memzero(ptr nonnull %4, i32 3, ptr undef) #5
+  call void @runtime.hashmapBinarySet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, ptr undef) #5
   call void @llvm.lifetime.end.p0(i64 12, ptr nonnull %hashmap.key)
   call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %hashmap.value)
   ret void
 }
 
-declare void @runtime.hashmapGenericSet(ptr dereferenceable_or_null(48), ptr nocapture, ptr nocapture, ptr) #0
+declare void @runtime.hashmapBinarySet(ptr dereferenceable_or_null(40), ptr, ptr, ptr) #1
 
 ; Function Attrs: noinline nounwind
-define hidden i32 @main.testZeroArrayGet(ptr dereferenceable_or_null(48) %m, [2 x %main.hasPadding] %s, ptr %context) unnamed_addr #2 {
+define hidden i32 @main.testZeroArrayGet(ptr dereferenceable_or_null(40) %m, [2 x %main.hasPadding] %s, ptr %context) unnamed_addr #3 {
 entry:
   %hashmap.key = alloca [2 x %main.hasPadding], align 8
   %hashmap.value = alloca i32, align 4
@@ -71,15 +84,23 @@ entry:
   %hashmap.key.repack1 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 12
   %s.elt2 = extractvalue [2 x %main.hasPadding] %s, 1
   store %main.hasPadding %s.elt2, ptr %hashmap.key.repack1, align 4
-  %0 = call i1 @runtime.hashmapGenericGet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, i32 4, ptr undef) #4
+  %0 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 1
+  call void @runtime.memzero(ptr nonnull %0, i32 3, ptr undef) #5
+  %1 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 9
+  call void @runtime.memzero(ptr nonnull %1, i32 3, ptr undef) #5
+  %2 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 13
+  call void @runtime.memzero(ptr nonnull %2, i32 3, ptr undef) #5
+  %3 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 21
+  call void @runtime.memzero(ptr nonnull %3, i32 3, ptr undef) #5
+  %4 = call i1 @runtime.hashmapBinaryGet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, i32 4, ptr undef) #5
   call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %hashmap.key)
-  %1 = load i32, ptr %hashmap.value, align 4
+  %5 = load i32, ptr %hashmap.value, align 4
   call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %hashmap.value)
-  ret i32 %1
+  ret i32 %5
 }
 
 ; Function Attrs: noinline nounwind
-define hidden void @main.testZeroArraySet(ptr dereferenceable_or_null(48) %m, [2 x %main.hasPadding] %s, ptr %context) unnamed_addr #2 {
+define hidden void @main.testZeroArraySet(ptr dereferenceable_or_null(40) %m, [2 x %main.hasPadding] %s, ptr %context) unnamed_addr #3 {
 entry:
   %hashmap.key = alloca [2 x %main.hasPadding], align 8
   %hashmap.value = alloca i32, align 4
@@ -91,20 +112,29 @@ entry:
   %hashmap.key.repack1 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 12
   %s.elt2 = extractvalue [2 x %main.hasPadding] %s, 1
   store %main.hasPadding %s.elt2, ptr %hashmap.key.repack1, align 4
-  call void @runtime.hashmapGenericSet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, ptr undef) #4
+  %0 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 1
+  call void @runtime.memzero(ptr nonnull %0, i32 3, ptr undef) #5
+  %1 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 9
+  call void @runtime.memzero(ptr nonnull %1, i32 3, ptr undef) #5
+  %2 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 13
+  call void @runtime.memzero(ptr nonnull %2, i32 3, ptr undef) #5
+  %3 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 21
+  call void @runtime.memzero(ptr nonnull %3, i32 3, ptr undef) #5
+  call void @runtime.hashmapBinarySet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, ptr undef) #5
   call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %hashmap.key)
   call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %hashmap.value)
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.main(ptr %context) unnamed_addr #1 {
+define hidden void @main.main(ptr %context) unnamed_addr #2 {
 entry:
   ret void
 }
 
-attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { noinline nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #3 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
+attributes #3 = { noinline nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #4 = { nounwind }
+attributes #4 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
+attributes #5 = { nounwind }

errors_test.go

@@ -38,7 +38,6 @@ func TestErrors(t *testing.T) {
 		{name: "loader-invaliddep"},
 		{name: "loader-invalidpackage"},
 		{name: "loader-nopackage"},
-		{name: "noheap", target: "cortex-m-qemu"},
 		{name: "optimizer"},
 		{name: "syntax"},
 		{name: "types"},

flake.lock

@@ -20,16 +20,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1770136044,
+        "lastModified": 1747953325,
-        "narHash": "sha256-tlFqNG/uzz2++aAmn4v8J0vAkV3z7XngeIIB3rM3650=",
+        "narHash": "sha256-y2ZtlIlNTuVJUZCqzZAhIw5rrKP4DOSklev6c8PyCkQ=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "e576e3c9cf9bad747afcddd9e34f51d18c855b4e",
+        "rev": "55d1f923c480dadce40f5231feb472e81b0bab48",
         "type": "github"
       },
       "original": {
         "id": "nixpkgs",
-        "ref": "nixos-25.11",
+        "ref": "nixos-25.05",
         "type": "indirect"
       }
     },

flake.nix

@@ -34,7 +34,7 @@
   inputs = {
     # Use a recent stable release, but fix the version to make it reproducible.
     # This version should be updated from time to time.
-    nixpkgs.url = "nixpkgs/nixos-25.11";
+    nixpkgs.url = "nixpkgs/nixos-25.05";
     flake-utils.url = "github:numtide/flake-utils";
   };
   outputs = { self, nixpkgs, flake-utils }:

go.mod

@@ -1,53 +1,29 @@
 module github.com/tinygo-org/tinygo
 
-go 1.23.0
+go 1.22.0
 
 require (
 	github.com/aykevl/go-wasm v0.0.2-0.20250317121156-42b86c494139
 	github.com/blakesmith/ar v0.0.0-20150311145944-8bd4349a67f2
 	github.com/gofrs/flock v0.8.1
-	github.com/golangci/misspell v0.6.0
 	github.com/google/shlex v0.0.0-20181106134648-c34317bd91bf
 	github.com/inhies/go-bytesize v0.0.0-20220417184213-4913239db9cf
 	github.com/marcinbor85/gohex v0.0.0-20200531091804-343a4b548892
 	github.com/mattn/go-colorable v0.1.13
 	github.com/mattn/go-tty v0.0.4
-	github.com/mgechev/revive v1.3.9
 	github.com/sigurn/crc16 v0.0.0-20211026045750-20ab5afb07e3
-	github.com/tetratelabs/wazero v1.9.0
+	github.com/tetratelabs/wazero v1.6.0
-	go.bug.st/serial v1.6.4
+	go.bug.st/serial v1.6.0
-	go.bytecodealliance.org v0.6.2
-	go.bytecodealliance.org/cm v0.2.2
 	golang.org/x/net v0.35.0
 	golang.org/x/sys v0.30.0
 	golang.org/x/tools v0.30.0
 	gopkg.in/yaml.v2 v2.4.0
-	tinygo.org/x/espflasher v0.6.0
+	tinygo.org/x/go-llvm v0.0.0-20250422114502-b8f170971e74
-	tinygo.org/x/go-llvm v0.0.0-20260422095634-06c6725fe5e6
 )
 
 require (
-	github.com/BurntSushi/toml v1.4.0 // indirect
-	github.com/chavacava/garif v0.1.0 // indirect
-	github.com/coreos/go-semver v0.3.1 // indirect
 	github.com/creack/goselect v0.1.2 // indirect
-	github.com/docker/libtrust v0.0.0-20160708172513-aabc10ec26b7 // indirect
-	github.com/fatih/color v1.17.0 // indirect
-	github.com/fatih/structtag v1.2.0 // indirect
-	github.com/hashicorp/go-version v1.7.0 // indirect
-	github.com/klauspost/compress v1.17.11 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
-	github.com/mattn/go-runewidth v0.0.9 // indirect
+	github.com/stretchr/testify v1.8.4 // indirect
-	github.com/mgechev/dots v0.0.0-20210922191527-e955255bf517 // indirect
-	github.com/mitchellh/go-homedir v1.1.0 // indirect
-	github.com/olekukonko/tablewriter v0.0.5 // indirect
-	github.com/opencontainers/go-digest v1.0.0 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
-	github.com/regclient/regclient v0.8.2 // indirect
-	github.com/sirupsen/logrus v1.9.3 // indirect
-	github.com/spf13/afero v1.11.0 // indirect
-	github.com/ulikunitz/xz v0.5.12 // indirect
-	github.com/urfave/cli/v3 v3.0.0-beta1 // indirect
-	golang.org/x/mod v0.23.0 // indirect
 	golang.org/x/text v0.22.0 // indirect
 )

go.sum

@@ -1,36 +1,17 @@
-github.com/BurntSushi/toml v1.4.0 h1:kuoIxZQy2WRRk1pttg9asf+WVv6tWQuBNVmK8+nqPr0=
-github.com/BurntSushi/toml v1.4.0/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
 github.com/aykevl/go-wasm v0.0.2-0.20250317121156-42b86c494139 h1:2O/WuAt8J5id3khcAtVB90czG80m+v0sfkLE07GrCVg=
 github.com/aykevl/go-wasm v0.0.2-0.20250317121156-42b86c494139/go.mod h1:7sXyiaA0WtSogCu67R2252fQpVmJMh9JWJ9ddtGkpWw=
 github.com/blakesmith/ar v0.0.0-20150311145944-8bd4349a67f2 h1:oMCHnXa6CCCafdPDbMh/lWRhRByN0VFLvv+g+ayx1SI=
 github.com/blakesmith/ar v0.0.0-20150311145944-8bd4349a67f2/go.mod h1:PkYb9DJNAwrSvRx5DYA+gUcOIgTGVMNkfSCbZM8cWpI=
-github.com/chavacava/garif v0.1.0 h1:2JHa3hbYf5D9dsgseMKAmc/MZ109otzgNFk5s87H9Pc=
-github.com/chavacava/garif v0.1.0/go.mod h1:XMyYCkEL58DF0oyW4qDjjnPWONs2HBqYKI+UIPD+Gww=
-github.com/coreos/go-semver v0.3.1 h1:yi21YpKnrx1gt5R+la8n5WgS0kCrsPp33dmEyHReZr4=
-github.com/coreos/go-semver v0.3.1/go.mod h1:irMmmIw/7yzSRPWryHsK7EYSg09caPQL03VsM8rvUec=
 github.com/creack/goselect v0.1.2 h1:2DNy14+JPjRBgPzAd1thbQp4BSIihxcBf0IXhQXDRa0=
 github.com/creack/goselect v0.1.2/go.mod h1:a/NhLweNvqIYMuxcMOuWY516Cimucms3DglDzQP3hKY=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/docker/libtrust v0.0.0-20160708172513-aabc10ec26b7 h1:UhxFibDNY/bfvqU5CAUmr9zpesgbU6SWc8/B4mflAE4=
-github.com/docker/libtrust v0.0.0-20160708172513-aabc10ec26b7/go.mod h1:cyGadeNEkKy96OOhEzfZl+yxihPEzKnqJwvfuSUqbZE=
-github.com/fatih/color v1.17.0 h1:GlRw1BRJxkpqUCBKzKOw098ed57fEsKeNjpTe3cSjK4=
-github.com/fatih/color v1.17.0/go.mod h1:YZ7TlrGPkiz6ku9fK3TLD/pl3CpsiFyu8N92HLgmosI=
-github.com/fatih/structtag v1.2.0 h1:/OdNE99OxoI/PqaW/SuSK9uxxT3f/tcSZgon/ssNSx4=
-github.com/fatih/structtag v1.2.0/go.mod h1:mBJUNpUnHmRKrKlQQlmCrh5PuhftFbNv8Ys4/aAZl94=
 github.com/gofrs/flock v0.8.1 h1:+gYjHKf32LDeiEEFhQaotPbLuUXjY5ZqxKgXy7n59aw=
 github.com/gofrs/flock v0.8.1/go.mod h1:F1TvTiK9OcQqauNUHlbJvyl9Qa1QvF/gOUDKA14jxHU=
-github.com/golangci/misspell v0.6.0 h1:JCle2HUTNWirNlDIAUO44hUsKhOFqGPoC4LZxlaSXDs=
-github.com/golangci/misspell v0.6.0/go.mod h1:keMNyY6R9isGaSAu+4Q8NMBwMPkh15Gtc8UCVoDtAWo=
 github.com/google/shlex v0.0.0-20181106134648-c34317bd91bf h1:7+FW5aGwISbqUtkfmIpZJGRgNFg2ioYPvFaUxdqpDsg=
 github.com/google/shlex v0.0.0-20181106134648-c34317bd91bf/go.mod h1:RpwtwJQFrIEPstU94h88MWPXP2ektJZ8cZ0YntAmXiE=
-github.com/hashicorp/go-version v1.7.0 h1:5tqGy27NaOTB8yJKUZELlFAS/LTKJkrmONwQKeRZfjY=
-github.com/hashicorp/go-version v1.7.0/go.mod h1:fltr4n8CU8Ke44wwGCBoEymUuxUHl09ZGVZPK5anwXA=
 github.com/inhies/go-bytesize v0.0.0-20220417184213-4913239db9cf h1:FtEj8sfIcaaBfAKrE1Cwb61YDtYq9JxChK1c7AKce7s=
 github.com/inhies/go-bytesize v0.0.0-20220417184213-4913239db9cf/go.mod h1:yrqSXGoD/4EKfF26AOGzscPOgTTJcyAwM2rpixWT+t4=
-github.com/klauspost/compress v1.17.11 h1:In6xLpyWOi1+C7tXUUWv2ot1QvBjxevKAaI6IXrJmUc=
-github.com/klauspost/compress v1.17.11/go.mod h1:pMDklpSncoRMuLFrf1W9Ss9KT+0rH90U12bZKk7uwG0=
 github.com/marcinbor85/gohex v0.0.0-20200531091804-343a4b548892 h1:6J+qramlHVLmiBOgRiBOnQkno8uprqG6YFFQTt6uYIw=
 github.com/marcinbor85/gohex v0.0.0-20200531091804-343a4b548892/go.mod h1:Pb6XcsXyropB9LNHhnqaknG/vEwYztLkQzVCHv8sQ3M=
 github.com/mattn/go-colorable v0.1.4/go.mod h1:U0ppj6V5qS13XJ6of8GYAs25YV2eR4EVcfRqFIhoBtE=
@@ -42,57 +23,18 @@ github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/mattn/go-runewidth v0.0.7/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
-github.com/mattn/go-runewidth v0.0.9 h1:Lm995f3rfxdpd6TSmuVCHVb/QhupuXlYr8sCI/QdE+0=
-github.com/mattn/go-runewidth v0.0.9/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
 github.com/mattn/go-tty v0.0.4 h1:NVikla9X8MN0SQAqCYzpGyXv0jY7MNl3HOWD2dkle7E=
 github.com/mattn/go-tty v0.0.4/go.mod h1:u5GGXBtZU6RQoKV8gY5W6UhMudbR5vXnUe7j3pxse28=
-github.com/mgechev/dots v0.0.0-20210922191527-e955255bf517 h1:zpIH83+oKzcpryru8ceC6BxnoG8TBrhgAvRg8obzup0=
-github.com/mgechev/dots v0.0.0-20210922191527-e955255bf517/go.mod h1:KQ7+USdGKfpPjXk4Ga+5XxQM4Lm4e3gAogrreFAYpOg=
-github.com/mgechev/revive v1.3.9 h1:18Y3R4a2USSBF+QZKFQwVkBROUda7uoBlkEuBD+YD1A=
-github.com/mgechev/revive v1.3.9/go.mod h1:+uxEIr5UH0TjXWHTno3xh4u7eg6jDpXKzQccA9UGhHU=
-github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
-github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
-github.com/olareg/olareg v0.1.1 h1:Ui7q93zjcoF+U9U71sgqgZWByDoZOpqHitUXEu2xV+g=
-github.com/olareg/olareg v0.1.1/go.mod h1:w8NP4SWrHHtxsFaUiv1lnCnYPm4sN1seCd2h7FK/dc0=
-github.com/olekukonko/tablewriter v0.0.5 h1:P2Ga83D34wi1o9J6Wh1mRuqd4mF/x/lgBS7N7AbDhec=
-github.com/olekukonko/tablewriter v0.0.5/go.mod h1:hPp6KlRPjbx+hW8ykQs1w3UBbZlj6HuIJcUGPhkA7kY=
-github.com/opencontainers/go-digest v1.0.0 h1:apOUWs51W5PlhuyGyz9FCeeBIOUDA/6nW8Oi/yOhh5U=
-github.com/opencontainers/go-digest v1.0.0/go.mod h1:0JzlMkj0TRzQZfJkVvzbP0HBR3IKzErnv2BNG4W4MAM=
-github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
-github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/regclient/regclient v0.8.2 h1:23BQ3jWgKYHHIXUhp/S9laVJDHDoOQaQCzXMJ4undVE=
-github.com/regclient/regclient v0.8.2/go.mod h1:uGyetv0o6VLyRDjtfeBqp/QBwRLJ3Hcn07/+8QbhNcM=
-github.com/sergi/go-diff v1.3.1 h1:xkr+Oxo4BOQKmkn/B9eMK0g5Kg/983T9DqqPHwYqD+8=
-github.com/sergi/go-diff v1.3.1/go.mod h1:aMJSSKb2lpPvRNec0+w3fl7LP9IOFzdc9Pa4NFbPK1I=
 github.com/sigurn/crc16 v0.0.0-20211026045750-20ab5afb07e3 h1:aQKxg3+2p+IFXXg97McgDGT5zcMrQoi0EICZs8Pgchs=
 github.com/sigurn/crc16 v0.0.0-20211026045750-20ab5afb07e3/go.mod h1:9/etS5gpQq9BJsJMWg1wpLbfuSnkm8dPF6FdW2JXVhA=
-github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
+github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
-github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
-github.com/spf13/afero v1.11.0 h1:WJQKhtpdm3v2IzqG8VMqrr6Rf3UYpEF239Jy9wNepM8=
-github.com/spf13/afero v1.11.0/go.mod h1:GH9Y3pIexgf1MTIWtNGyogA5MwRIDXGUr+hbWNoBjkY=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
-github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
-github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
-github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
+github.com/tetratelabs/wazero v1.6.0 h1:z0H1iikCdP8t+q341xqepY4EWvHEw8Es7tlqiVzlP3g=
-github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/tetratelabs/wazero v1.6.0/go.mod h1:0U0G41+ochRKoPKCJlh0jMg1CHkyfK8kDqiirMmKY8A=
-github.com/tetratelabs/wazero v1.9.0 h1:IcZ56OuxrtaEz8UYNRHBrUa9bYeX9oVY93KspZZBf/I=
+go.bug.st/serial v1.6.0 h1:mAbRGN4cKE2J5gMwsMHC2KQisdLRQssO9WSM+rbZJ8A=
-github.com/tetratelabs/wazero v1.9.0/go.mod h1:TSbcXCfFP0L2FGkRPxHphadXPjo1T6W+CseNNY7EkjM=
+go.bug.st/serial v1.6.0/go.mod h1:UABfsluHAiaNI+La2iESysd9Vetq7VRdpxvjx7CmmOE=
-github.com/ulikunitz/xz v0.5.12 h1:37Nm15o69RwBkXM0J6A5OlE67RZTfzUxTj8fB3dfcsc=
-github.com/ulikunitz/xz v0.5.12/go.mod h1:nbz6k7qbPmH4IRqmfOplQw/tblSgqTqBwxkY0oWt/14=
-github.com/urfave/cli/v3 v3.0.0-beta1 h1:6DTaaUarcM0wX7qj5Hcvs+5Dm3dyUTBbEwIWAjcw9Zg=
-github.com/urfave/cli/v3 v3.0.0-beta1/go.mod h1:FnIeEMYu+ko8zP1F9Ypr3xkZMIDqW3DR92yUtY39q1Y=
-go.bug.st/serial v1.6.4 h1:7FmqNPgVp3pu2Jz5PoPtbZ9jJO5gnEnZIvnI1lzve8A=
-go.bug.st/serial v1.6.4/go.mod h1:nofMJxTeNVny/m6+KaafC6vJGj3miwQZ6vW4BZUGJPI=
-go.bytecodealliance.org v0.6.2 h1:Jy4u5DVmSkXgsnwojBhJ+AD/YsJsR3VzVnxF0xRCqTQ=
-go.bytecodealliance.org v0.6.2/go.mod h1:gqjTJm0y9NSksG4py/lSjIQ/SNuIlOQ+hCIEPQwtJgA=
-go.bytecodealliance.org/cm v0.2.2 h1:M9iHS6qs884mbQbIjtLX1OifgyPG9DuMs2iwz8G4WQA=
-go.bytecodealliance.org/cm v0.2.2/go.mod h1:JD5vtVNZv7sBoQQkvBvAAVKJPhR/bqBH7yYXTItMfZI=
 golang.org/x/mod v0.23.0 h1:Zb7khfcRGKk+kqfxFaP5tZqCnDZMjC5VtUBs87Hr6QM=
 golang.org/x/mod v0.23.0/go.mod h1:6SkKJ3Xj0I0BrPOZoBy3bdMptDDU9oJrpohJ3eWZ1fY=
 golang.org/x/net v0.35.0 h1:T5GQRQb2y08kTAByq9L4/bz8cipCdA8FbRTXewonqY8=
@@ -102,7 +44,6 @@ golang.org/x/sync v0.11.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20191008105621-543471e840be/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191120155948-bd437916bb0e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.30.0 h1:QjkSwP/36a20jFYWkSue1YwXzLmsV5Gfq7Eiy72C1uc=
@@ -115,10 +56,7 @@ gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-tinygo.org/x/espflasher v0.6.0 h1:CHbGMHAIWq1tB8FKd/QwBpNFw1jvHHxpmvZiF+QOYUo=
+tinygo.org/x/go-llvm v0.0.0-20250422114502-b8f170971e74 h1:ovavgTdIBWCH8YWlcfq9gkpoyT1+IxMKSn+Df27QwE8=
-tinygo.org/x/espflasher v0.6.0/go.mod h1:tr5u08HoE67WD5zxJesCiiVF/R1b6Akz3yXwh5zah8U=
+tinygo.org/x/go-llvm v0.0.0-20250422114502-b8f170971e74/go.mod h1:GFbusT2VTA4I+l4j80b17KFK+6whv69Wtny5U+T8RR0=
-tinygo.org/x/go-llvm v0.0.0-20260422095634-06c6725fe5e6 h1:QSnqFgNV2Ij0T4hM2qKv53fcDAFElxClPjVUZXzYkWU=
-tinygo.org/x/go-llvm v0.0.0-20260422095634-06c6725fe5e6/go.mod h1:GFbusT2VTA4I+l4j80b17KFK+6whv69Wtny5U+T8RR0=

goenv/version.go

@@ -10,7 +10,7 @@ import (
 
 // Version of TinyGo.
 // Update this value before release of new version of software.
-const version = "0.42.0-dev"
+const version = "0.40.1"
 
 // Return TinyGo version, either in the form 0.30.0 or as a development version
 // (like 0.30.0-dev-abcd012).

internal/tools/go.mod

@@ -0,0 +1,30 @@
+// TODO: remove this (by merging it into the top-level go.mod)
+// once the top level go.mod specifies a go new enough to make our version of misspell happy.
+
+module tools
+
+go 1.21
+
+require (
+	github.com/golangci/misspell v0.6.0
+	github.com/mgechev/revive v1.3.9
+)
+
+require (
+	github.com/BurntSushi/toml v1.4.0 // indirect
+	github.com/chavacava/garif v0.1.0 // indirect
+	github.com/fatih/color v1.17.0 // indirect
+	github.com/fatih/structtag v1.2.0 // indirect
+	github.com/hashicorp/go-version v1.7.0 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-runewidth v0.0.9 // indirect
+	github.com/mgechev/dots v0.0.0-20210922191527-e955255bf517 // indirect
+	github.com/mitchellh/go-homedir v1.1.0 // indirect
+	github.com/olekukonko/tablewriter v0.0.5 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/spf13/afero v1.11.0 // indirect
+	golang.org/x/sys v0.22.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+	golang.org/x/tools v0.23.0 // indirect
+)

internal/tools/go.sum

@@ -0,0 +1,56 @@
+github.com/BurntSushi/toml v1.4.0 h1:kuoIxZQy2WRRk1pttg9asf+WVv6tWQuBNVmK8+nqPr0=
+github.com/BurntSushi/toml v1.4.0/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
+github.com/chavacava/garif v0.1.0 h1:2JHa3hbYf5D9dsgseMKAmc/MZ109otzgNFk5s87H9Pc=
+github.com/chavacava/garif v0.1.0/go.mod h1:XMyYCkEL58DF0oyW4qDjjnPWONs2HBqYKI+UIPD+Gww=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/fatih/color v1.17.0 h1:GlRw1BRJxkpqUCBKzKOw098ed57fEsKeNjpTe3cSjK4=
+github.com/fatih/color v1.17.0/go.mod h1:YZ7TlrGPkiz6ku9fK3TLD/pl3CpsiFyu8N92HLgmosI=
+github.com/fatih/structtag v1.2.0 h1:/OdNE99OxoI/PqaW/SuSK9uxxT3f/tcSZgon/ssNSx4=
+github.com/fatih/structtag v1.2.0/go.mod h1:mBJUNpUnHmRKrKlQQlmCrh5PuhftFbNv8Ys4/aAZl94=
+github.com/golangci/misspell v0.6.0 h1:JCle2HUTNWirNlDIAUO44hUsKhOFqGPoC4LZxlaSXDs=
+github.com/golangci/misspell v0.6.0/go.mod h1:keMNyY6R9isGaSAu+4Q8NMBwMPkh15Gtc8UCVoDtAWo=
+github.com/hashicorp/go-version v1.7.0 h1:5tqGy27NaOTB8yJKUZELlFAS/LTKJkrmONwQKeRZfjY=
+github.com/hashicorp/go-version v1.7.0/go.mod h1:fltr4n8CU8Ke44wwGCBoEymUuxUHl09ZGVZPK5anwXA=
+github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
+github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg=
+github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/mattn/go-runewidth v0.0.9 h1:Lm995f3rfxdpd6TSmuVCHVb/QhupuXlYr8sCI/QdE+0=
+github.com/mattn/go-runewidth v0.0.9/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
+github.com/mgechev/dots v0.0.0-20210922191527-e955255bf517 h1:zpIH83+oKzcpryru8ceC6BxnoG8TBrhgAvRg8obzup0=
+github.com/mgechev/dots v0.0.0-20210922191527-e955255bf517/go.mod h1:KQ7+USdGKfpPjXk4Ga+5XxQM4Lm4e3gAogrreFAYpOg=
+github.com/mgechev/revive v1.3.9 h1:18Y3R4a2USSBF+QZKFQwVkBROUda7uoBlkEuBD+YD1A=
+github.com/mgechev/revive v1.3.9/go.mod h1:+uxEIr5UH0TjXWHTno3xh4u7eg6jDpXKzQccA9UGhHU=
+github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
+github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
+github.com/olekukonko/tablewriter v0.0.5 h1:P2Ga83D34wi1o9J6Wh1mRuqd4mF/x/lgBS7N7AbDhec=
+github.com/olekukonko/tablewriter v0.0.5/go.mod h1:hPp6KlRPjbx+hW8ykQs1w3UBbZlj6HuIJcUGPhkA7kY=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/spf13/afero v1.11.0 h1:WJQKhtpdm3v2IzqG8VMqrr6Rf3UYpEF239Jy9wNepM8=
+github.com/spf13/afero v1.11.0/go.mod h1:GH9Y3pIexgf1MTIWtNGyogA5MwRIDXGUr+hbWNoBjkY=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
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+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
+github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.22.0 h1:RI27ohtqKCnwULzJLqkv897zojh5/DwS/ENaMzUOaWI=
+golang.org/x/sys v0.22.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/tools v0.23.0 h1:SGsXPZ+2l4JsgaCKkx+FQ9YZ5XEtA1GZYuoDjenLjvg=
+golang.org/x/tools v0.23.0/go.mod h1:pnu6ufv6vQkll6szChhK3C3L/ruaIv5eBeztNG8wtsI=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

internal/tools/tools.go

@@ -2,15 +2,12 @@
 
 // Install tools specified in go.mod.
 // See https://marcofranssen.nl/manage-go-tools-via-go-modules for idiom.
-package main
+package tools
 
 import (
 	_ "github.com/golangci/misspell"
 	_ "github.com/mgechev/revive"
-	_ "go.bytecodealliance.org/cm"
-	_ "go.bytecodealliance.org/cmd/wit-bindgen-go"
 )
 
 //go:generate go install github.com/golangci/misspell/cmd/misspell
 //go:generate go install github.com/mgechev/revive
-//go:generate go install go.bytecodealliance.org/cmd/wit-bindgen-go

internal/wasm-tools/README.md

@@ -0,0 +1,5 @@
+# wasm-tools directory
+
+This directory has a separate `go.mod` file because the `wasm-tools-go` module requires Go 1.22, while TinyGo itself supports Go 1.19.
+
+When the minimum Go version for TinyGo is 1.22, this directory can be folded into `internal/tools` and the `go.mod` and `go.sum` files deleted.

internal/wasm-tools/go.mod

@@ -0,0 +1,22 @@
+module github.com/tinygo-org/tinygo/internal/wasm-tools
+
+go 1.23.0
+
+require (
+	go.bytecodealliance.org v0.6.2
+	go.bytecodealliance.org/cm v0.2.2
+)
+
+require (
+	github.com/coreos/go-semver v0.3.1 // indirect
+	github.com/docker/libtrust v0.0.0-20160708172513-aabc10ec26b7 // indirect
+	github.com/klauspost/compress v1.18.0 // indirect
+	github.com/opencontainers/go-digest v1.0.0 // indirect
+	github.com/regclient/regclient v0.8.2 // indirect
+	github.com/sirupsen/logrus v1.9.3 // indirect
+	github.com/tetratelabs/wazero v1.9.0 // indirect
+	github.com/ulikunitz/xz v0.5.12 // indirect
+	github.com/urfave/cli/v3 v3.0.0-beta1 // indirect
+	golang.org/x/mod v0.24.0 // indirect
+	golang.org/x/sys v0.31.0 // indirect
+)

internal/wasm-tools/go.sum

@@ -0,0 +1,48 @@
+github.com/coreos/go-semver v0.3.1 h1:yi21YpKnrx1gt5R+la8n5WgS0kCrsPp33dmEyHReZr4=
+github.com/coreos/go-semver v0.3.1/go.mod h1:irMmmIw/7yzSRPWryHsK7EYSg09caPQL03VsM8rvUec=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/docker/libtrust v0.0.0-20160708172513-aabc10ec26b7 h1:UhxFibDNY/bfvqU5CAUmr9zpesgbU6SWc8/B4mflAE4=
+github.com/docker/libtrust v0.0.0-20160708172513-aabc10ec26b7/go.mod h1:cyGadeNEkKy96OOhEzfZl+yxihPEzKnqJwvfuSUqbZE=
+github.com/klauspost/compress v1.18.0 h1:c/Cqfb0r+Yi+JtIEq73FWXVkRonBlf0CRNYc8Zttxdo=
+github.com/klauspost/compress v1.18.0/go.mod h1:2Pp+KzxcywXVXMr50+X0Q/Lsb43OQHYWRCY2AiWywWQ=
+github.com/olareg/olareg v0.1.1 h1:Ui7q93zjcoF+U9U71sgqgZWByDoZOpqHitUXEu2xV+g=
+github.com/olareg/olareg v0.1.1/go.mod h1:w8NP4SWrHHtxsFaUiv1lnCnYPm4sN1seCd2h7FK/dc0=
+github.com/opencontainers/go-digest v1.0.0 h1:apOUWs51W5PlhuyGyz9FCeeBIOUDA/6nW8Oi/yOhh5U=
+github.com/opencontainers/go-digest v1.0.0/go.mod h1:0JzlMkj0TRzQZfJkVvzbP0HBR3IKzErnv2BNG4W4MAM=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/regclient/regclient v0.8.2 h1:23BQ3jWgKYHHIXUhp/S9laVJDHDoOQaQCzXMJ4undVE=
+github.com/regclient/regclient v0.8.2/go.mod h1:uGyetv0o6VLyRDjtfeBqp/QBwRLJ3Hcn07/+8QbhNcM=
+github.com/sergi/go-diff v1.3.1 h1:xkr+Oxo4BOQKmkn/B9eMK0g5Kg/983T9DqqPHwYqD+8=
+github.com/sergi/go-diff v1.3.1/go.mod h1:aMJSSKb2lpPvRNec0+w3fl7LP9IOFzdc9Pa4NFbPK1I=
+github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
+github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
+github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/tetratelabs/wazero v1.9.0 h1:IcZ56OuxrtaEz8UYNRHBrUa9bYeX9oVY93KspZZBf/I=
+github.com/tetratelabs/wazero v1.9.0/go.mod h1:TSbcXCfFP0L2FGkRPxHphadXPjo1T6W+CseNNY7EkjM=
+github.com/ulikunitz/xz v0.5.12 h1:37Nm15o69RwBkXM0J6A5OlE67RZTfzUxTj8fB3dfcsc=
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+github.com/urfave/cli/v3 v3.0.0-beta1 h1:6DTaaUarcM0wX7qj5Hcvs+5Dm3dyUTBbEwIWAjcw9Zg=
+github.com/urfave/cli/v3 v3.0.0-beta1/go.mod h1:FnIeEMYu+ko8zP1F9Ypr3xkZMIDqW3DR92yUtY39q1Y=
+go.bytecodealliance.org v0.6.2 h1:Jy4u5DVmSkXgsnwojBhJ+AD/YsJsR3VzVnxF0xRCqTQ=
+go.bytecodealliance.org v0.6.2/go.mod h1:gqjTJm0y9NSksG4py/lSjIQ/SNuIlOQ+hCIEPQwtJgA=
+go.bytecodealliance.org/cm v0.2.2 h1:M9iHS6qs884mbQbIjtLX1OifgyPG9DuMs2iwz8G4WQA=
+go.bytecodealliance.org/cm v0.2.2/go.mod h1:JD5vtVNZv7sBoQQkvBvAAVKJPhR/bqBH7yYXTItMfZI=
+golang.org/x/mod v0.24.0 h1:ZfthKaKaT4NrhGVZHO1/WDTwGES4De8KtWO0SIbNJMU=
+golang.org/x/mod v0.24.0/go.mod h1:IXM97Txy2VM4PJ3gI61r1YEk/gAj6zAHN3AdZt6S9Ww=
+golang.org/x/sync v0.11.0 h1:GGz8+XQP4FvTTrjZPzNKTMFtSXH80RAzG+5ghFPgK9w=
+golang.org/x/sync v0.11.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.31.0 h1:ioabZlmFYtWhL+TRYpcnNlLwhyxaM9kWTDEmfnprqik=
+golang.org/x/sys v0.31.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
+golang.org/x/tools v0.30.0 h1:BgcpHewrV5AUp2G9MebG4XPFI1E2W41zU1SaqVA9vJY=
+golang.org/x/tools v0.30.0/go.mod h1:c347cR/OJfw5TI+GfX7RUPNMdDRRbjvYTS0jPyvsVtY=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

internal/wasm-tools/tools.go

@@ -0,0 +1,12 @@
+//go:build tools
+
+// Install tools specified in go.mod.
+// See https://marcofranssen.nl/manage-go-tools-via-go-modules for idiom.
+package tools
+
+import (
+	_ "go.bytecodealliance.org/cm"
+	_ "go.bytecodealliance.org/cmd/wit-bindgen-go"
+)
+
+//go:generate go install go.bytecodealliance.org/cmd/wit-bindgen-go

interp/errors.go

@@ -19,7 +19,6 @@ var (
 	errUnsupportedRuntimeInst = errors.New("interp: unsupported instruction (to be emitted at runtime)")
 	errMapAlreadyCreated      = errors.New("interp: map already created")
 	errLoopUnrolled           = errors.New("interp: loop unrolled")
-	errLoopTooLong            = errors.New("interp: loop ran too many iterations")
 )
 
 // This is one of the errors that can be returned from toLLVMValue when the
@@ -30,7 +29,7 @@ var errInvalidPtrToIntSize = errors.New("interp: ptrtoint integer size does not
 func isRecoverableError(err error) bool {
 	return err == errIntegerAsPointer || err == errUnsupportedInst ||
 		err == errUnsupportedRuntimeInst || err == errMapAlreadyCreated ||
-		err == errLoopUnrolled || err == errLoopTooLong || err == errInvalidPtrToIntSize
+		err == errLoopUnrolled
 }
 
 // ErrorLine is one line in a traceback. The position may be missing.

interp/interp.go

@@ -19,38 +19,35 @@ const checks = true
 
 // runner contains all state related to one interp run.
 type runner struct {
-	mod               llvm.Module
+	mod           llvm.Module
-	targetData        llvm.TargetData
+	targetData    llvm.TargetData
-	builder           llvm.Builder
+	builder       llvm.Builder
-	pointerSize       uint32                   // cached pointer size from the TargetData
+	pointerSize   uint32                   // cached pointer size from the TargetData
-	dataPtrType       llvm.Type                // often used type so created in advance
+	dataPtrType   llvm.Type                // often used type so created in advance
-	uintptrType       llvm.Type                // equivalent to uintptr in Go
+	uintptrType   llvm.Type                // equivalent to uintptr in Go
-	maxAlign          int                      // maximum alignment of an object, alignment of runtime.alloc() result
+	maxAlign      int                      // maximum alignment of an object, alignment of runtime.alloc() result
-	byteOrder         binary.ByteOrder         // big-endian or little-endian
+	byteOrder     binary.ByteOrder         // big-endian or little-endian
-	debug             bool                     // log debug messages
+	debug         bool                     // log debug messages
-	pkgName           string                   // package name of the currently executing package
+	pkgName       string                   // package name of the currently executing package
-	functionCache     map[llvm.Value]*function // cache of compiled functions
+	functionCache map[llvm.Value]*function // cache of compiled functions
-	objects           []object                 // slice of objects in memory
+	objects       []object                 // slice of objects in memory
-	globals           map[llvm.Value]int       // map from global to index in objects slice
+	globals       map[llvm.Value]int       // map from global to index in objects slice
-	start             time.Time
+	start         time.Time
-	timeout           time.Duration
+	timeout       time.Duration
-	maxLoopIterations int
+	callsExecuted uint64
-	callsExecuted     uint64
-	interpErr         error // set by Uint/Int when they encounter pointer data
 }
 
-func newRunner(mod llvm.Module, timeout time.Duration, maxLoopIterations int, debug bool) *runner {
+func newRunner(mod llvm.Module, timeout time.Duration, debug bool) *runner {
 	r := runner{
-		mod:               mod,
+		mod:           mod,
-		targetData:        llvm.NewTargetData(mod.DataLayout()),
+		targetData:    llvm.NewTargetData(mod.DataLayout()),
-		byteOrder:         llvmutil.ByteOrder(mod.Target()),
+		byteOrder:     llvmutil.ByteOrder(mod.Target()),
-		debug:             debug,
+		debug:         debug,
-		functionCache:     make(map[llvm.Value]*function),
+		functionCache: make(map[llvm.Value]*function),
-		objects:           []object{{}},
+		objects:       []object{{}},
-		globals:           make(map[llvm.Value]int),
+		globals:       make(map[llvm.Value]int),
-		start:             time.Now(),
+		start:         time.Now(),
-		timeout:           timeout,
+		timeout:       timeout,
-		maxLoopIterations: maxLoopIterations,
 	}
 	r.pointerSize = uint32(r.targetData.PointerSize())
 	r.dataPtrType = llvm.PointerType(mod.Context().Int8Type(), 0)
@@ -67,8 +64,8 @@ func (r *runner) dispose() {
 
 // Run evaluates runtime.initAll function as much as possible at compile time.
 // Set debug to true if it should print output while running.
-func Run(mod llvm.Module, timeout time.Duration, maxLoopIterations int, debug bool) error {
+func Run(mod llvm.Module, timeout time.Duration, debug bool) error {
-	r := newRunner(mod, timeout, maxLoopIterations, debug)
+	r := newRunner(mod, timeout, debug)
 	defer r.dispose()
 
 	initAll := mod.NamedFunction("runtime.initAll")
@@ -207,10 +204,10 @@ func Run(mod llvm.Module, timeout time.Duration, maxLoopIterations int, debug bo
 
 // RunFunc evaluates a single package initializer at compile time.
 // Set debug to true if it should print output while running.
-func RunFunc(fn llvm.Value, timeout time.Duration, maxLoopIterations int, debug bool) error {
+func RunFunc(fn llvm.Value, timeout time.Duration, debug bool) error {
 	// Create and initialize *runner object.
 	mod := fn.GlobalParent()
-	r := newRunner(mod, timeout, maxLoopIterations, debug)
+	r := newRunner(mod, timeout, debug)
 	defer r.dispose()
 	initName := fn.Name()
 	if !strings.HasSuffix(initName, ".init") {

interp/interp_test.go

@@ -2,6 +2,7 @@ package interp
 
 import (
 	"os"
+	"strconv"
 	"strings"
 	"testing"
 	"time"
@@ -10,17 +11,25 @@ import (
 )
 
 func TestInterp(t *testing.T) {
+	llvmVersion, err := strconv.Atoi(strings.Split(llvm.Version, ".")[0])
+	if err != nil {
+		// Note: this should never happen and if it does, it will always happen
+		// for a particular build because llvm.Version is a constant.
+		panic(err)
+	}
 	for _, name := range []string{
 		"basic",
 		"phi",
+		"slice-copy",
 		"consteval",
-		"intrinsics",
-		"copy",
 		"interface",
 		"revert",
 		"alloc",
 	} {
 		name := name // make local to this closure
+		if name == "slice-copy" && llvmVersion < 14 {
+			continue
+		}
 		t.Run(name, func(t *testing.T) {
 			t.Parallel()
 			runTest(t, "testdata/"+name)
@@ -44,7 +53,7 @@ func runTest(t *testing.T, pathPrefix string) {
 	defer mod.Dispose()
 
 	// Perform the transform.
-	err = Run(mod, 10*time.Minute, DefaultMaxInterpBlockEntries, false)
+	err = Run(mod, 10*time.Minute, false)
 	if err != nil {
 		if err, match := err.(*Error); match {
 			println(err.Error())

interp/interpreter.go

@@ -12,12 +12,6 @@ import (
 	"tinygo.org/x/go-llvm"
 )
 
-// DefaultMaxInterpBlockEntries is the default maximum number of times a single
-// basic block may be entered during interpretation of one function call. This
-// limits how far the interpreter will unroll or evaluate loops before deferring
-// the init function to runtime.
-const DefaultMaxInterpBlockEntries = 1000
-
 func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent string) (value, memoryView, *Error) {
 	mem := memoryView{r: r, parent: parentMem}
 	locals := make([]value, len(fn.locals))
@@ -32,10 +26,6 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 	// This is used to prevent unrolling.
 	var runtimeBlocks map[int]struct{}
 
-	// Track how many times each basic block has been entered, to detect
-	// loops that are too expensive to evaluate at compile time.
-	var blockCounts map[int]int
-
 	// Start with the first basic block and the first instruction.
 	// Branch instructions may modify both bb and instIndex when branching.
 	bb := fn.blocks[0]
@@ -46,18 +36,6 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 	for instIndex := 0; instIndex < len(bb.instructions); instIndex++ {
 		if instIndex == 0 {
 			// This is the start of a new basic block.
-
-			// Check whether this block has been entered too many times,
-			// which indicates an expensive loop that should be deferred
-			// to runtime.
-			if blockCounts == nil {
-				blockCounts = make(map[int]int)
-			}
-			blockCounts[currentBB]++
-			if r.maxLoopIterations > 0 && blockCounts[currentBB] > r.maxLoopIterations {
-				return nil, mem, r.errorAt(bb.instructions[0], errLoopTooLong)
-			}
-
 			if len(mem.instructions) != startRTInsts {
 				if _, ok := runtimeBlocks[lastBB]; ok {
 					// This loop has been unrolled.
@@ -299,7 +277,7 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 				// means that monotonic time in the time package is counted from
 				// time.Time{}.Sub(1), which should be fine.
 				locals[inst.localIndex] = literalValue{uint64(0)}
-			case callFn.name == "runtime.alloc" || callFn.name == "runtime.alloc_noheap":
+			case callFn.name == "runtime.alloc":
 				// Allocate heap memory. At compile time, this is instead done
 				// by creating a global variable.
 
@@ -334,28 +312,33 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 					fmt.Fprintln(os.Stderr, indent+"runtime.alloc:", size, "->", ptr)
 				}
 				locals[inst.localIndex] = ptr
-			case strings.HasPrefix(callFn.name, "llvm.umin."):
+			case callFn.name == "runtime.sliceCopy":
-				locals[inst.localIndex] = makeLiteralInt(min(operands[1].Uint(r), operands[2].Uint(r)), inst.llvmInst.Type().IntTypeWidth())
+				// sliceCopy implements the built-in copy function for slices.
-			case strings.HasPrefix(callFn.name, "llvm.smin."):
+				// It is implemented here so that it can be used even if the
-				locals[inst.localIndex] = makeLiteralInt(uint64(min(operands[1].Int(r), operands[2].Int(r))), inst.llvmInst.Type().IntTypeWidth())
+				// runtime implementation is not available. Doing it this way
-			case strings.HasPrefix(callFn.name, "llvm.umax."):
+				// may also be faster.
-				locals[inst.localIndex] = makeLiteralInt(max(operands[1].Uint(r), operands[2].Uint(r)), inst.llvmInst.Type().IntTypeWidth())
+				// Code:
-			case strings.HasPrefix(callFn.name, "llvm.smax."):
+				// func sliceCopy(dst, src unsafe.Pointer, dstLen, srcLen uintptr, elemSize uintptr) int {
-				locals[inst.localIndex] = makeLiteralInt(uint64(max(operands[1].Int(r), operands[2].Int(r))), inst.llvmInst.Type().IntTypeWidth())
+				//     n := srcLen
-			case strings.HasPrefix(callFn.name, "llvm.memcpy.p0") || strings.HasPrefix(callFn.name, "llvm.memmove.p0"):
+				//     if n > dstLen {
-				// Copy a block of memory from one pointer to another.
+				//         n = dstLen
-				if operands[4].Uint(r) != 0 {
+				//     }
-					// This is a volatile copy/move.
+				//     memmove(dst, src, n*elemSize)
-					err := r.runAtRuntime(fn, inst, locals, &mem, indent)
+				//     return int(n)
-					if err != nil {
+				// }
-						return nil, mem, err
+				dstLen := operands[3].Uint(r)
-					}
+				srcLen := operands[4].Uint(r)
-					continue
+				elemSize := operands[5].Uint(r)
+				n := srcLen
+				if n > dstLen {
+					n = dstLen
 				}
-				nBytes := operands[3].Uint(r)
+				if r.debug {
-				if nBytes != 0 {
+					fmt.Fprintln(os.Stderr, indent+"copy:", operands[1], operands[2], n)
+				}
+				if n != 0 {
 					// Only try to copy bytes when there are any bytes to copy.
-					// This is not just an optimization. If one of the pointers
+					// This is not just an optimization. If one of the slices
 					// (or both) are nil, the asPointer method call will fail
 					// even though copying a nil slice is allowed.
 					dst, err := operands[1].asPointer(r)
@@ -380,10 +363,11 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 						}
 						continue
 					}
+					nBytes := uint32(n * elemSize)
 					srcObj := mem.get(src.index())
 					dstObj := mem.getWritable(dst.index())
 					if srcObj.buffer == nil || dstObj.buffer == nil {
-						// If the buffer is nil, it means the memory is external.
+						// If the buffer is nil, it means the slice is external.
 						// This can happen for example when copying data out of
 						// a //go:embed slice, which is not available at interp
 						// time.
@@ -396,10 +380,33 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 					}
 					dstBuf := dstObj.buffer.asRawValue(r)
 					srcBuf := srcObj.buffer.asRawValue(r)
-					copy(dstBuf.buf[dst.offset():][:nBytes], srcBuf.buf[src.offset():][:nBytes])
+					copy(dstBuf.buf[dst.offset():dst.offset()+nBytes], srcBuf.buf[src.offset():])
 					dstObj.buffer = dstBuf
 					mem.put(dst.index(), dstObj)
 				}
+				locals[inst.localIndex] = makeLiteralInt(n, inst.llvmInst.Type().IntTypeWidth())
+			case strings.HasPrefix(callFn.name, "llvm.memcpy.p0") || strings.HasPrefix(callFn.name, "llvm.memmove.p0"):
+				// Copy a block of memory from one pointer to another.
+				dst, err := operands[1].asPointer(r)
+				if err != nil {
+					return nil, mem, r.errorAt(inst, err)
+				}
+				src, err := operands[2].asPointer(r)
+				if err != nil {
+					return nil, mem, r.errorAt(inst, err)
+				}
+				nBytes := uint32(operands[3].Uint(r))
+				dstObj := mem.getWritable(dst.index())
+				dstBuf := dstObj.buffer.asRawValue(r)
+				if mem.get(src.index()).buffer == nil {
+					// Looks like the source buffer is not defined.
+					// This can happen with //extern or //go:embed.
+					return nil, mem, r.errorAt(inst, errUnsupportedRuntimeInst)
+				}
+				srcBuf := mem.get(src.index()).buffer.asRawValue(r)
+				copy(dstBuf.buf[dst.offset():dst.offset()+nBytes], srcBuf.buf[src.offset():])
+				dstObj.buffer = dstBuf
+				mem.put(dst.index(), dstObj)
 			case callFn.name == "runtime.typeAssert":
 				// This function must be implemented manually as it is normally
 				// implemented by the interface lowering pass.
@@ -435,6 +442,64 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 				// Special function that will trigger an error.
 				// This is used to test error reporting.
 				return nil, mem, r.errorAt(inst, errors.New("test error"))
+			case strings.HasSuffix(callFn.name, ".$typeassert"):
+				if r.debug {
+					fmt.Fprintln(os.Stderr, indent+"interface assert:", operands[1:])
+				}
+
+				// Load various values for the interface implements check below.
+				typecodePtr, err := operands[1].asPointer(r)
+				if err != nil {
+					return nil, mem, r.errorAt(inst, err)
+				}
+				// typecodePtr always point to the numMethod field in the type
+				// description struct. The methodSet, when present, comes right
+				// before the numMethod field (the compiler doesn't generate
+				// method sets for concrete types without methods).
+				// Considering that the compiler doesn't emit interface type
+				// asserts for interfaces with no methods (as the always succeed)
+				// then if the offset is zero, this assert must always fail.
+				if typecodePtr.offset() == 0 {
+					locals[inst.localIndex] = literalValue{uint8(0)}
+					break
+				}
+				typecodePtrOffset, err := typecodePtr.addOffset(-int64(r.pointerSize))
+				if err != nil {
+					return nil, mem, r.errorAt(inst, err)
+				}
+				methodSetPtr, err := mem.load(typecodePtrOffset, r.pointerSize).asPointer(r)
+				if err != nil {
+					return nil, mem, r.errorAt(inst, err)
+				}
+				methodSet := mem.get(methodSetPtr.index()).llvmGlobal.Initializer()
+				numMethods := int(r.builder.CreateExtractValue(methodSet, 0, "").ZExtValue())
+				llvmFn := inst.llvmInst.CalledValue()
+				methodSetAttr := llvmFn.GetStringAttributeAtIndex(-1, "tinygo-methods")
+				methodSetString := methodSetAttr.GetStringValue()
+
+				// Make a set of all the methods on the concrete type, for
+				// easier checking in the next step.
+				concreteTypeMethods := map[string]struct{}{}
+				for i := 0; i < numMethods; i++ {
+					methodInfo := r.builder.CreateExtractValue(methodSet, 1, "")
+					name := r.builder.CreateExtractValue(methodInfo, i, "").Name()
+					concreteTypeMethods[name] = struct{}{}
+				}
+
+				// Check whether all interface methods are also in the list
+				// of defined methods calculated above. This is the interface
+				// assert itself.
+				assertOk := uint8(1) // i1 true
+				for _, name := range strings.Split(methodSetString, "; ") {
+					if _, ok := concreteTypeMethods[name]; !ok {
+						// There is a method on the interface that is not
+						// implemented by the type. The assertion will fail.
+						assertOk = 0 // i1 false
+						break
+					}
+				}
+				// If assertOk is still 1, the assertion succeeded.
+				locals[inst.localIndex] = literalValue{assertOk}
 			case strings.HasSuffix(callFn.name, "$invoke"):
 				// This thunk is the interface method dispatcher: it is called
 				// with all regular parameters and a type code. It will then
@@ -847,14 +912,6 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 			}
 			return nil, mem, r.errorAt(inst, errUnsupportedInst)
 		}
-
-		// Check if an instruction triggered a recoverable error (e.g.,
-		// trying to interpret pointer data as integer bytes).
-		if r.interpErr != nil {
-			err := r.interpErr
-			r.interpErr = nil
-			return nil, mem, r.errorAt(inst, err)
-		}
 	}
 	return nil, mem, r.errorAt(bb.instructions[len(bb.instructions)-1], errors.New("interp: reached end of basic block without terminator"))
 }

interp/memory.go

@@ -556,13 +556,11 @@ func (v pointerValue) asRawValue(r *runner) rawValue {
 }
 
 func (v pointerValue) Uint(r *runner) uint64 {
-	r.interpErr = errUnsupportedInst
+	panic("cannot convert pointer to integer")
-	return 0
 }
 
 func (v pointerValue) Int(r *runner) int64 {
-	r.interpErr = errUnsupportedInst
+	panic("cannot convert pointer to integer")
-	return 0
 }
 
 func (v pointerValue) equal(rhs pointerValue) bool {
@@ -738,12 +736,11 @@ func (v rawValue) asRawValue(r *runner) rawValue {
 	return v
 }
 
-func (v rawValue) bytes(r *runner) []byte {
+func (v rawValue) bytes() []byte {
 	buf := make([]byte, len(v.buf))
 	for i, p := range v.buf {
 		if p > 255 {
-			r.interpErr = errUnsupportedInst
+			panic("cannot convert pointer value to byte")
-			return buf
 		}
 		buf[i] = byte(p)
 	}
@@ -751,10 +748,7 @@ func (v rawValue) bytes(r *runner) []byte {
 }
 
 func (v rawValue) Uint(r *runner) uint64 {
-	buf := v.bytes(r)
+	buf := v.bytes()
-	if r.interpErr != nil {
-		return 0
-	}
 
 	switch len(v.buf) {
 	case 1:

interp/testdata/copy.ll

@@ -1,68 +0,0 @@
-target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
-target triple = "x86_64--linux"
-
-@string = internal unnamed_addr constant [3 x i8] c"foo"
-@moveDst = global [3 x i8] zeroinitializer
-@copyDst = global [3 x i8] zeroinitializer
-
-@externalSrc = external global [2 x i8]
-@moveExternalDst = global [2 x i8] zeroinitializer
-
-@moveEscapedSrc = global [4 x i8] c"abcd"
-@moveEscapedDst = global [4 x i8] zeroinitializer
-
-@volatileSrc = global [2 x i8] c"xy"
-@volatileDst = global [2 x i8] zeroinitializer
-
-declare void @use(ptr)
-
-define void @runtime.initAll() {
-  call void @main.init()
-  ret void
-}
-
-define internal void @main.init() {
-  call void @testMove()
-  call void @testCopy()
-  call void @testMoveExternal()
-  call void @testMoveEscaped()
-  call void @testVolatileCopy()
-  ret void
-}
-
-; Test a simple memmove between globals.
-define internal void @testMove() {
-  call void @llvm.memmove.p0.p0.i64(ptr @moveDst, ptr @string, i64 3, i1 false)
-  ret void
-}
-
-; Test a simple memcpy between globals.
-define internal void @testCopy() {
-  call void @llvm.memcpy.p0.p0.i64(ptr @copyDst, ptr @string, i64 3, i1 false)
-  ret void
-}
-
-; Test a memmove from an external global.
-; This should be run at runtime.
-define internal void @testMoveExternal() {
-  call void @llvm.memmove.p0.p0.i64(ptr @moveExternalDst, ptr @externalSrc, i64 2, i1 false)
-  ret void
-}
-
-; Test a memmove from an escaped (and potentially modified) source buffer.
-define internal void @testMoveEscaped() {
-  call void @use(ptr @moveEscapedSrc)
-  call void @llvm.memmove.p0.p0.i64(ptr @moveEscapedDst, ptr @moveEscapedSrc, i64 4, i1 false)
-  ret void
-}
-
-; Test a volatile memcpy.
-; This should always be run at runtime.
-define internal void @testVolatileCopy() {
-  call void @llvm.memcpy.p0.p0.i64(ptr @volatileDst, ptr @volatileSrc, i64 2, i1 true)
-  ret void
-}
-
-declare void @llvm.memmove.p0.p0.i64(ptr, ptr, i64, i1)
-
-declare void @llvm.memcpy.p0.p0.i64(ptr, ptr, i64, i1)

interp/testdata/copy.out.ll

@@ -1,27 +0,0 @@
-target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
-target triple = "x86_64--linux"
-
-@moveDst = local_unnamed_addr global [3 x i8] c"foo"
-@copyDst = local_unnamed_addr global [3 x i8] c"foo"
-@externalSrc = external local_unnamed_addr global [2 x i8]
-@moveExternalDst = local_unnamed_addr global [2 x i8] zeroinitializer
-@moveEscapedSrc = global [4 x i8] c"abcd"
-@moveEscapedDst = local_unnamed_addr global [4 x i8] zeroinitializer
-@volatileSrc = global [2 x i8] c"xy"
-@volatileDst = global [2 x i8] zeroinitializer
-
-declare void @use(ptr) local_unnamed_addr
-
-define void @runtime.initAll() local_unnamed_addr {
-  call void @llvm.memmove.p0.p0.i64(ptr @moveExternalDst, ptr @externalSrc, i64 2, i1 false)
-  call void @use(ptr @moveEscapedSrc)
-  call void @llvm.memmove.p0.p0.i64(ptr @moveEscapedDst, ptr @moveEscapedSrc, i64 4, i1 false)
-  call void @llvm.memcpy.p0.p0.i64(ptr @volatileDst, ptr @volatileSrc, i64 2, i1 true)
-  ret void
-}
-
-declare void @llvm.memmove.p0.p0.i64(ptr nocapture writeonly, ptr nocapture readonly, i64, i1 immarg) #0
-
-declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #0
-
-attributes #0 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }

interp/testdata/intrinsics.ll

@@ -1,52 +0,0 @@
-target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
-target triple = "x86_64--linux"
-
-@uminResult = global i32 0
-@sminResult = global i32 0
-@umaxResult = global i32 0
-@smaxResult = global i32 0
-
-define void @runtime.initAll() {
-  call void @main.init()
-  ret void
-}
-
-define internal void @main.init() {
-  call void @testUMin()
-  call void @testSMin()
-  call void @testUMax()
-  call void @testSMax()
-  ret void
-}
-
-define internal void @testUMin() {
-  %umin = call i32 @llvm.umin.i32(i32 12, i32 -1)
-  store i32 %umin, ptr @uminResult
-  ret void
-}
-
-declare i32 @llvm.umin.i32(i32, i32)
-
-define internal void @testSMin() {
-  %smin = call i32 @llvm.smin.i32(i32 12, i32 -1)
-  store i32 %smin, ptr @sminResult
-  ret void
-}
-
-declare i32 @llvm.smin.i32(i32, i32)
-
-define internal void @testUMax() {
-  %umax = call i32 @llvm.umax.i32(i32 12, i32 -1)
-  store i32 %umax, ptr @umaxResult
-  ret void
-}
-
-declare i32 @llvm.umax.i32(i32, i32)
-
-define internal void @testSMax() {
-  %smax = call i32 @llvm.smax.i32(i32 12, i32 -1)
-  store i32 %smax, ptr @smaxResult
-  ret void
-}
-
-declare i32 @llvm.smax.i32(i32, i32)

interp/testdata/intrinsics.out.ll

@@ -1,11 +0,0 @@
-target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
-target triple = "x86_64--linux"
-
-@uminResult = local_unnamed_addr global i32 12
-@sminResult = local_unnamed_addr global i32 -1
-@umaxResult = local_unnamed_addr global i32 -1
-@smaxResult = local_unnamed_addr global i32 12
-
-define void @runtime.initAll() local_unnamed_addr {
-  ret void
-}

interp/testdata/slice-copy.ll

@@ -0,0 +1,124 @@
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64--linux"
+
+@main.uint8SliceSrc.buf = internal global [2 x i8] c"\03d"
+@main.uint8SliceSrc = internal unnamed_addr global { ptr, i64, i64 } { ptr @main.uint8SliceSrc.buf, i64 2, i64 2 }
+@main.uint8SliceDst = internal unnamed_addr global { ptr, i64, i64 } zeroinitializer
+@main.int16SliceSrc.buf = internal global [3 x i16] [i16 5, i16 123, i16 1024]
+@main.int16SliceSrc = internal unnamed_addr global { ptr, i64, i64 } { ptr @main.int16SliceSrc.buf, i64 3, i64 3 }
+@main.int16SliceDst = internal unnamed_addr global { ptr, i64, i64 } zeroinitializer
+@main.sliceSrcUntaint.buf = internal global [2 x i8] c"ab"
+@main.sliceDstUntaint.buf = internal global [2 x i8] zeroinitializer
+@main.sliceSrcTaint.buf = internal global [2 x i8] c"cd"
+@main.sliceDstTaint.buf = internal global [2 x i8] zeroinitializer
+@main.sliceSrcExternal1.buf = external global [2 x i8]
+@main.sliceDstExternal1.buf = internal global [2 x i8] zeroinitializer
+@main.sliceSrcExternal2.buf = internal global [2 x i8] zeroinitializer
+@main.sliceDstExternal2.buf = external global [2 x i8]
+
+declare i64 @runtime.sliceCopy(ptr %dst, ptr %src, i64 %dstLen, i64 %srcLen, i64 %elemSize) unnamed_addr
+
+declare ptr @runtime.alloc(i64, ptr) unnamed_addr
+
+declare void @runtime.printuint8(i8)
+
+declare void @runtime.printint16(i16)
+
+declare void @use(ptr)
+
+define void @runtime.initAll() unnamed_addr {
+entry:
+  call void @main.init()
+  ret void
+}
+
+define void @main() unnamed_addr {
+entry:
+  ; print(uintSliceSrc[0])
+  %uint8SliceSrc.buf = load ptr, ptr @main.uint8SliceSrc
+  %uint8SliceSrc.val = load i8, ptr %uint8SliceSrc.buf
+  call void @runtime.printuint8(i8 %uint8SliceSrc.val)
+
+  ; print(uintSliceDst[0])
+  %uint8SliceDst.buf = load ptr, ptr @main.uint8SliceDst
+  %uint8SliceDst.val = load i8, ptr %uint8SliceDst.buf
+  call void @runtime.printuint8(i8 %uint8SliceDst.val)
+
+  ; print(int16SliceSrc[0])
+  %int16SliceSrc.buf = load ptr, ptr @main.int16SliceSrc
+  %int16SliceSrc.val = load i16, ptr %int16SliceSrc.buf
+  call void @runtime.printint16(i16 %int16SliceSrc.val)
+
+  ; print(int16SliceDst[0])
+  %int16SliceDst.buf = load ptr, ptr @main.int16SliceDst
+  %int16SliceDst.val = load i16, ptr %int16SliceDst.buf
+  call void @runtime.printint16(i16 %int16SliceDst.val)
+
+  ; print(sliceDstUntaint[0])
+  %sliceDstUntaint.val = load i8, ptr getelementptr inbounds (i8, ptr @main.sliceDstUntaint.buf, i32 0)
+  call void @runtime.printuint8(i8 %sliceDstUntaint.val)
+
+  ; print(sliceDstTaint[0])
+  %sliceDstTaint.val = load i8, ptr getelementptr inbounds (i8, ptr @main.sliceDstTaint.buf, i32 0)
+  call void @runtime.printuint8(i8 %sliceDstTaint.val)
+
+  ; print(sliceDstExternal1[0])
+  %sliceDstExternal1.val = load i8, ptr getelementptr inbounds (i8, ptr @main.sliceDstExternal1.buf, i32 0)
+  call void @runtime.printuint8(i8 %sliceDstExternal1.val)
+
+  ; print(sliceDstExternal2[0])
+  %sliceDstExternal2.val = load i8, ptr getelementptr inbounds (i8, ptr @main.sliceDstExternal2.buf, i32 0)
+  call void @runtime.printuint8(i8 %sliceDstExternal2.val)
+
+  ret void
+}
+
+define internal void @main.init() unnamed_addr {
+entry:
+  ; equivalent of:
+  ;     uint8SliceDst = make([]uint8, len(uint8SliceSrc))
+  %uint8SliceSrc = load { ptr, i64, i64 }, ptr @main.uint8SliceSrc
+  %uint8SliceSrc.len = extractvalue { ptr, i64, i64 } %uint8SliceSrc, 1
+  %uint8SliceDst.buf = call ptr @runtime.alloc(i64 %uint8SliceSrc.len, ptr null)
+  %0 = insertvalue { ptr, i64, i64 } undef, ptr %uint8SliceDst.buf, 0
+  %1 = insertvalue { ptr, i64, i64 } %0, i64 %uint8SliceSrc.len, 1
+  %2 = insertvalue { ptr, i64, i64 } %1, i64 %uint8SliceSrc.len, 2
+  store { ptr, i64, i64 } %2, ptr @main.uint8SliceDst
+
+  ; equivalent of:
+  ;     copy(uint8SliceDst, uint8SliceSrc)
+  %uint8SliceSrc.buf = extractvalue { ptr, i64, i64 } %uint8SliceSrc, 0
+  %copy.n = call i64 @runtime.sliceCopy(ptr %uint8SliceDst.buf, ptr %uint8SliceSrc.buf, i64 %uint8SliceSrc.len, i64 %uint8SliceSrc.len, i64 1)
+
+  ; equivalent of:
+  ;     int16SliceDst = make([]int16, len(int16SliceSrc))
+  %int16SliceSrc = load { ptr, i64, i64 }, ptr @main.int16SliceSrc
+  %int16SliceSrc.len = extractvalue { ptr, i64, i64 } %int16SliceSrc, 1
+  %int16SliceSrc.len.bytes = mul i64 %int16SliceSrc.len, 2
+  %int16SliceDst.buf = call ptr @runtime.alloc(i64 %int16SliceSrc.len.bytes, ptr null)
+  %3 = insertvalue { ptr, i64, i64 } undef, ptr %int16SliceDst.buf, 0
+  %4 = insertvalue { ptr, i64, i64 } %3, i64 %int16SliceSrc.len, 1
+  %5 = insertvalue { ptr, i64, i64 } %4, i64 %int16SliceSrc.len, 2
+  store { ptr, i64, i64 } %5, ptr @main.int16SliceDst
+
+  ; equivalent of:
+  ;     copy(int16SliceDst, int16SliceSrc)
+  %int16SliceSrc.buf = extractvalue { ptr, i64, i64 } %int16SliceSrc, 0
+  %copy.n2 = call i64 @runtime.sliceCopy(ptr %int16SliceDst.buf, ptr %int16SliceSrc.buf, i64 %int16SliceSrc.len, i64 %int16SliceSrc.len, i64 2)
+
+  ; Copy slice that has a known value.
+  %copy.n3 = call i64 @runtime.sliceCopy(ptr @main.sliceDstUntaint.buf, ptr @main.sliceSrcUntaint.buf, i64 2, i64 2, i64 1)
+
+  ; Copy slice that might have been modified by the external @use call.
+  ; This is a fix for https://github.com/tinygo-org/tinygo/issues/3890.
+  call void @use(ptr @main.sliceSrcTaint.buf)
+  %copy.n4 = call i64 @runtime.sliceCopy(ptr @main.sliceDstTaint.buf, ptr @main.sliceSrcTaint.buf, i64 2, i64 2, i64 1)
+
+  ; Test that copying from or into external buffers works correctly.
+  ; These copy operations must be done at runtime.
+  ; https://github.com/tinygo-org/tinygo/issues/4895
+  %copy.n5 = call i64 @runtime.sliceCopy(ptr @main.sliceDstExternal1.buf, ptr @main.sliceSrcExternal1.buf, i64 2, i64 2, i64 1)
+  %copy.n6 = call i64 @runtime.sliceCopy(ptr @main.sliceDstExternal2.buf, ptr @main.sliceSrcExternal2.buf, i64 2, i64 2, i64 1)
+
+  ret void
+}

interp/testdata/slice-copy.out.ll

@@ -0,0 +1,42 @@
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64--linux"
+
+@main.sliceSrcTaint.buf = internal global [2 x i8] c"cd"
+@main.sliceDstTaint.buf = internal global [2 x i8] zeroinitializer
+@main.sliceSrcExternal1.buf = external global [2 x i8]
+@main.sliceDstExternal1.buf = internal global [2 x i8] zeroinitializer
+@main.sliceSrcExternal2.buf = internal global [2 x i8] zeroinitializer
+@main.sliceDstExternal2.buf = external global [2 x i8]
+
+declare i64 @runtime.sliceCopy(ptr, ptr, i64, i64, i64) unnamed_addr
+
+declare void @runtime.printuint8(i8) local_unnamed_addr
+
+declare void @runtime.printint16(i16) local_unnamed_addr
+
+declare void @use(ptr) local_unnamed_addr
+
+define void @runtime.initAll() unnamed_addr {
+entry:
+  call void @use(ptr @main.sliceSrcTaint.buf)
+  %copy.n4 = call i64 @runtime.sliceCopy(ptr @main.sliceDstTaint.buf, ptr @main.sliceSrcTaint.buf, i64 2, i64 2, i64 1)
+  %copy.n5 = call i64 @runtime.sliceCopy(ptr @main.sliceDstExternal1.buf, ptr @main.sliceSrcExternal1.buf, i64 2, i64 2, i64 1)
+  %copy.n6 = call i64 @runtime.sliceCopy(ptr @main.sliceDstExternal2.buf, ptr @main.sliceSrcExternal2.buf, i64 2, i64 2, i64 1)
+  ret void
+}
+
+define void @main() unnamed_addr {
+entry:
+  call void @runtime.printuint8(i8 3)
+  call void @runtime.printuint8(i8 3)
+  call void @runtime.printint16(i16 5)
+  call void @runtime.printint16(i16 5)
+  call void @runtime.printuint8(i8 97)
+  %sliceDstTaint.val = load i8, ptr @main.sliceDstTaint.buf, align 1
+  call void @runtime.printuint8(i8 %sliceDstTaint.val)
+  %sliceDstExternal1.val = load i8, ptr @main.sliceDstExternal1.buf, align 1
+  call void @runtime.printuint8(i8 %sliceDstExternal1.val)
+  %sliceDstExternal2.val = load i8, ptr @main.sliceDstExternal2.buf, align 1
+  call void @runtime.printuint8(i8 %sliceDstExternal2.val)
+  ret void
+}

loader/goroot.go

@@ -245,7 +245,6 @@ func pathsToOverride(goMinor int, needsSyscallPackage bool) map[string]bool {
 		"internal/cm/":                false,
 		"internal/futex/":             false,
 		"internal/fuzz/":              false,
-		"internal/itoa/":              false,
 		"internal/reflectlite/":       false,
 		"internal/gclayout":           false,
 		"internal/task/":              false,
@@ -268,31 +267,11 @@ func pathsToOverride(goMinor int, needsSyscallPackage bool) map[string]bool {
 		paths["crypto/internal/boring/sig/"] = false
 	}
 
-	if goMinor >= 26 {
-		// Go 1.26 added a CPU jitter entropy source for FIPS 140-3 that
-		// allocates a 32 MiB global buffer (ScratchBuffer [1<<25]byte).
-		// This is fine on systems with virtual memory, but causes RAM
-		// overflow on microcontrollers. Replace with a zero-size stub
-		// since TinyGo targets never use FIPS jitter entropy.
-		paths["crypto/internal/entropy/"] = true
-		paths["crypto/internal/entropy/v1.0.0/"] = false
-	}
-
 	if needsSyscallPackage {
 		paths["syscall/"] = true // include syscall/js
 		paths["internal/syscall/"] = true
 		paths["internal/syscall/unix/"] = false
 	}
-
-	if goMinor >= 26 {
-		// Go 1.26 added SWAR optimizations to unicode/utf8 that use
-		// constants assuming at least 32-bit uintptr. TinyGo supports
-		// 16-bit targets (AVR) where these constants overflow, so we
-		// provide a patched version.
-		paths["unicode/"] = true
-		paths["unicode/utf8/"] = false
-	}
-
 	return paths
 }
 

loader/loader.go

@@ -304,29 +304,6 @@ func (p *Program) Sorted() []*Package {
 	return p.sorted
 }
 
-// StripVarInitializer removes the package-level initializer for the named
-// variable from the type info. This prevents go/ssa from emitting an init
-// store for it, leaving the global zero-initialized in the IR. An external
-// value (e.g. from -ldflags -X via makeGlobalsModule) can then be linked in
-// at final link time without any runtime init overwriting it.
-//
-// Must be called after Parse() (typechecking populates InitOrder) and before
-// LoadSSA() (which consumes InitOrder to build the package init function).
-//
-// Only 1:1 var initializers (var x = expr) are matched. Multi-variable
-// initializers (var x, y = f()) are left untouched.
-func (p *Package) StripVarInitializer(name string) {
-	n := 0
-	for _, init := range p.info.InitOrder {
-		if len(init.Lhs) == 1 && init.Lhs[0].Name() == name {
-			continue // drop this initializer
-		}
-		p.info.InitOrder[n] = init
-		n++
-	}
-	p.info.InitOrder = p.info.InitOrder[:n]
-}
-
 // MainPkg returns the last package in the Sorted() slice. This is the main
 // package of the program.
 func (p *Program) MainPkg() *Package {
@@ -572,7 +549,7 @@ func (p *Package) extractEmbedLines(addError func(error)) {
 					}
 
 					// Look for //go:embed comments.
-					var allPatterns []embedPattern
+					var allPatterns []string
 					for _, comment := range doc.List {
 						if comment.Text != "//go:embed" && !strings.HasPrefix(comment.Text, "//go:embed ") {
 							continue
@@ -600,7 +577,21 @@ func (p *Package) extractEmbedLines(addError func(error)) {
 							})
 							continue
 						}
-						allPatterns = append(allPatterns, patterns...)
+						for _, pattern := range patterns {
+							// Check that the pattern is well-formed.
+							// It must be valid: the Go toolchain has already
+							// checked for invalid patterns. But let's check
+							// anyway to be sure.
+							if _, err := path.Match(pattern, ""); err != nil {
+								addError(types.Error{
+									Fset: p.program.fset,
+									Pos:  comment.Pos(),
+									Msg:  "invalid pattern syntax",
+								})
+								continue
+							}
+							allPatterns = append(allPatterns, pattern)
+						}
 					}
 
 					if len(allPatterns) != 0 {
@@ -633,8 +624,8 @@ func (p *Package) extractEmbedLines(addError func(error)) {
 						// Match all //go:embed patterns against the embed files
 						// provided by `go list`.
 						for _, name := range p.EmbedFiles {
-							for _, ep := range allPatterns {
+							for _, pattern := range allPatterns {
-								if ep.Match(name) {
+								if matchPattern(pattern, name) {
 									p.EmbedGlobals[globalName] = append(p.EmbedGlobals[globalName], &EmbedFile{
 										Name:      name,
 										NeedsData: byteSlice,
@@ -650,37 +641,13 @@ func (p *Package) extractEmbedLines(addError func(error)) {
 	}
 }
 
-// embedPattern represents a valid //go:embed pattern.
+// matchPattern returns true if (and only if) the given pattern would match the
-// See: https://pkg.go.dev/embed#hdr-Directives
+// filename. The pattern could also match a parent directory of name, in which
-type embedPattern struct {
+// case hidden files do not match.
-	pattern       string // glob pattern without "all:" prefix
+func matchPattern(pattern, name string) bool {
-	includeHidden bool   // true if "all:" prefix was present
-}
-
-// newEmbedPattern parses and validates a //go:embed pattern.
-// The "all:" prefix (if present) is stripped and reflected in includeHidden.
-// Returns an error if the pattern syntax is invalid.
-func newEmbedPattern(s string) (embedPattern, error) {
-	ep := embedPattern{pattern: s}
-	if strings.HasPrefix(s, "all:") {
-		ep.pattern = s[4:]
-		ep.includeHidden = true
-	}
-	if _, err := path.Match(ep.pattern, ""); err != nil {
-		return embedPattern{}, err
-	}
-	return ep, nil
-}
-
-// Match returns true if (and only if) the pattern matches the given filename.
-// The pattern could also match a parent directory of name, in which case hidden
-// files do not match (unless includeHidden is true).
-func (ep embedPattern) Match(name string) bool {
-	pattern := ep.pattern
-	includeHidden := ep.includeHidden
-
 	// Match this file.
-	if matched, _ := path.Match(pattern, name); matched {
+	matched, _ := path.Match(pattern, name)
+	if matched {
 		return true
 	}
 
@@ -694,20 +661,17 @@ func (ep embedPattern) Match(name string) bool {
 		dir = path.Clean(dir)
 		if matched, _ := path.Match(pattern, dir); matched {
 			// Pattern matches the directory.
-			if !includeHidden {
+			suffix := name[len(dir):]
-				suffix := name[len(dir):]
+			if strings.Contains(suffix, "/_") || strings.Contains(suffix, "/.") {
-				if strings.Contains(suffix, "/_") || strings.Contains(suffix, "/.") {
+				// Pattern matches a hidden file.
-					// Pattern matches a hidden file.
+				// Hidden files are included when listed directly as a
-					// Hidden files are included when listed directly as a
+				// pattern, but not when they are part of a directory tree.
-					// pattern, or when the "all:" prefix is used, but not
+				// Source:
-					// when they are part of a directory tree without "all:".
+				// > If a pattern names a directory, all files in the
-					// Source:
+				// > subtree rooted at that directory are embedded
-					// > If a pattern names a directory, all files in the
+				// > (recursively), except that files with names beginning
-					// > subtree rooted at that directory are embedded
+				// > with ‘.’ or ‘_’ are excluded.
-					// > (recursively), except that files with names beginning
+				return false
-					// > with ‘.’ or ‘_’ are excluded.
-					return false
-				}
 			}
 			return true
 		}
@@ -716,12 +680,11 @@ func (ep embedPattern) Match(name string) bool {
 
 // parseGoEmbed is like strings.Fields but for a //go:embed line. It parses
 // regular fields and quoted fields (that may contain spaces).
-func (p *Package) parseGoEmbed(args string, pos token.Pos) (patterns []embedPattern, err error) {
+func (p *Package) parseGoEmbed(args string, pos token.Pos) (patterns []string, err error) {
 	args = strings.TrimSpace(args)
 	initialLen := len(args)
 	for args != "" {
 		patternPos := pos + token.Pos(initialLen-len(args))
-		var pattern string
 		switch args[0] {
 		case '`', '"', '\\':
 			// Parse the next pattern using the Go scanner.
@@ -740,7 +703,8 @@ func (p *Package) parseGoEmbed(args string, pos token.Pos) (patterns []embedPatt
 					Msg:  "invalid quoted string in //go:embed",
 				}
 			}
-			pattern = constant.StringVal(constant.MakeFromLiteral(lit, tok, 0))
+			pattern := constant.StringVal(constant.MakeFromLiteral(lit, tok, 0))
+			patterns = append(patterns, pattern)
 			args = strings.TrimLeftFunc(args[len(lit):], unicode.IsSpace)
 		default:
 			// The value is just a regular value.
@@ -749,18 +713,17 @@ func (p *Package) parseGoEmbed(args string, pos token.Pos) (patterns []embedPatt
 			if index < 0 {
 				index = len(args)
 			}
-			pattern = args[:index]
+			pattern := args[:index]
+			patterns = append(patterns, pattern)
 			args = strings.TrimLeftFunc(args[len(pattern):], unicode.IsSpace)
 		}
-		ep, err := newEmbedPattern(pattern)
+		if _, err := path.Match(patterns[len(patterns)-1], ""); err != nil {
-		if err != nil {
 			return nil, types.Error{
 				Fset: p.program.fset,
 				Pos:  patternPos,
 				Msg:  "invalid pattern syntax",
 			}
 		}
-		patterns = append(patterns, ep)
 	}
 	return patterns, nil
 }

main.go

@@ -30,18 +30,14 @@ import (
 	"github.com/tinygo-org/tinygo/compileopts"
 	"github.com/tinygo-org/tinygo/diagnostics"
 	"github.com/tinygo-org/tinygo/goenv"
-	"github.com/tinygo-org/tinygo/interp"
 	"github.com/tinygo-org/tinygo/loader"
 	"golang.org/x/tools/go/buildutil"
-	"tinygo.org/x/espflasher/pkg/espflasher"
 	"tinygo.org/x/go-llvm"
 
 	"go.bug.st/serial"
 	"go.bug.st/serial/enumerator"
 )
 
-var errInheritableOnly = errors.New("target is inheritable-only, which means it cannot be used directly for building or flashing")
-
 // commandError is an error type to wrap os/exec.Command errors. This provides
 // some more information regarding what went wrong while running a command.
 type commandError struct {
@@ -143,10 +139,6 @@ func printCommand(cmd string, args ...string) {
 
 // Build compiles and links the given package and writes it to outpath.
 func Build(pkgName, outpath string, config *compileopts.Config) error {
-	if config.Target != nil && config.Target.InheritableOnly {
-		return errInheritableOnly
-	}
-
 	// Create a temporary directory for intermediary files.
 	tmpdir, err := os.MkdirTemp("", "tinygo")
 	if err != nil {
@@ -364,10 +356,6 @@ func Flash(pkgName, port, outpath string, options *compileopts.Options) error {
 		return err
 	}
 
-	if config.Target != nil && config.Target.InheritableOnly {
-		return errInheritableOnly
-	}
-
 	// determine the type of file to compile
 	var fileExt string
 
@@ -397,10 +385,6 @@ func Flash(pkgName, port, outpath string, options *compileopts.Options) error {
 		fileExt = ".hex"
 	case "bmp":
 		fileExt = ".elf"
-	case "adb":
-		fileExt = ".hex"
-	case "esp32flash", "esp32jtag":
-		fileExt = ".bin"
 	case "native":
 		return errors.New("unknown flash method \"native\" - did you miss a -target flag?")
 	default:
@@ -535,61 +519,11 @@ func Flash(pkgName, port, outpath string, options *compileopts.Options) error {
 		if err != nil {
 			return &commandError{"failed to flash", result.Binary, err}
 		}
-	case "adb":
-		// Run pre-flash adb shell commands.
-		for _, preCmd := range config.Target.ADBPreCommands {
-			cmd := executeCommand(config.Options, "adb", "shell", preCmd)
-			cmd.Stdout = os.Stdout
-			cmd.Stderr = os.Stderr
-			if err := cmd.Run(); err != nil {
-				return &commandError{"failed to run adb pre-command", preCmd, err}
-			}
-		}
-
-		// Push the binary to the device.
-		if config.Target.ADBPushRemote == "" {
-			return errors.New("invalid target file: flash-method was set to \"adb\" but no adb-push-remote was set")
-		}
-		cmd := executeCommand(config.Options, "adb", "push", result.Binary, config.Target.ADBPushRemote)
-		cmd.Stdout = os.Stdout
-		cmd.Stderr = os.Stderr
-		if err := cmd.Run(); err != nil {
-			return &commandError{"adb push failed to " + config.Target.ADBPushRemote, result.Binary, err}
-		}
-
-		// Run post-flash adb shell commands.
-		for _, postCmd := range config.Target.ADBPostCommands {
-			postCmd = strings.ReplaceAll(postCmd, "{remote}", config.Target.ADBPushRemote)
-			cmd := executeCommand(config.Options, "adb", "shell", postCmd)
-			cmd.Stdout = os.Stdout
-			cmd.Stderr = os.Stderr
-			if err := cmd.Run(); err != nil {
-				return &commandError{"failed to run adb post-command", postCmd, err}
-			}
-		}
-	case "esp32flash":
-		port, err := getDefaultPort(port, config.Target.SerialPort)
-		if err != nil {
-			return &commandError{"failed to find port", port, err}
-		}
-
-		if err := flashBinUsingEsp32(port, classicReset, result.Binary, config.Options); err != nil {
-			return &commandError{"failed to flash", result.Binary, err}
-		}
-	case "esp32jtag":
-		port, err := getDefaultPort(port, config.Target.SerialPort)
-		if err != nil {
-			return &commandError{"failed to find port", port, err}
-		}
-
-		if err := flashBinUsingEsp32(port, jtagReset, result.Binary, config.Options); err != nil {
-			return &commandError{"failed to flash", result.Binary, err}
-		}
 	default:
 		return fmt.Errorf("unknown flash method: %s", flashMethod)
 	}
 	if options.Monitor {
-		return Monitor(result.Executable, port, config)
+		return Monitor(result.Executable, "", config)
 	}
 	return nil
 }
@@ -831,10 +765,6 @@ func Run(pkgName string, options *compileopts.Options, cmdArgs []string) error {
 		return err
 	}
 
-	if config.Target != nil && config.Target.InheritableOnly {
-		return errInheritableOnly
-	}
-
 	_, err = buildAndRun(pkgName, config, os.Stdout, cmdArgs, nil, 0, func(cmd *exec.Cmd, result builder.BuildResult) error {
 		return cmd.Run()
 	})
@@ -1089,68 +1019,6 @@ func flashHexUsingMSD(volumes []string, tmppath string, options *compileopts.Opt
 	return errors.New("unable to locate any volume: [" + strings.Join(volumes, ",") + "]")
 }
 
-const (
-	defaultReset = "default"
-	classicReset = "classic"
-	jtagReset    = "jtag"
-)
-
-func flashBinUsingEsp32(port, resetMode, tmppath string, options *compileopts.Options) error {
-	opts := espflasher.DefaultOptions()
-	opts.Compress = true
-	opts.Logger = &espflasher.StdoutLogger{W: os.Stdout}
-	if options.BaudRate != 0 {
-		opts.FlashBaudRate = options.BaudRate
-	}
-
-	if resetMode == jtagReset {
-		opts.ResetMode = espflasher.ResetUSBJTAG
-	}
-
-	flasher, err := espflasher.New(port, opts)
-	if err != nil {
-		return err
-	}
-	defer flasher.Close()
-
-	chipName := flasher.ChipName()
-	offset := uint32(0x0)
-	if chipName == "ESP32" {
-		offset = 0x1000
-	}
-
-	// Read the firmware binary
-	data, err := os.ReadFile(tmppath)
-	if err != nil {
-		return err
-	}
-
-	if err := flasher.EraseFlash(); err != nil {
-		return fmt.Errorf("erase failed: %v", err)
-	}
-
-	progress := func(current, total int) {
-		pct := float64(current) / float64(total) * 100
-		bar := int(pct / 2)
-		fmt.Printf("\r[%-50s] %6.1f%%", strings.Repeat("#", bar)+strings.Repeat(".", 50-bar), pct)
-		if current >= total {
-			fmt.Println()
-		}
-	}
-
-	// Flash with progress reporting
-	err = flasher.FlashImage(data, offset, progress)
-	if err != nil {
-		return err
-	}
-	fmt.Println()
-
-	// Reset the device to run the new firmware
-	flasher.Reset()
-
-	return nil
-}
-
 type mountPoint struct {
 	name string
 	path string
@@ -1739,7 +1607,6 @@ func main() {
 	serial := flag.String("serial", "", "which serial output to use (none, uart, usb, rtt)")
 	work := flag.Bool("work", false, "print the name of the temporary build directory and do not delete this directory on exit")
 	interpTimeout := flag.Duration("interp-timeout", 180*time.Second, "interp optimization pass timeout")
-	interpLoopLimit := flag.Int("interp-loop-limit", interp.DefaultMaxInterpBlockEntries, "maximum loop iterations during interp (0 to disable)")
 	var tags buildutil.TagsFlag
 	flag.Var(&tags, "tags", "a space-separated list of extra build tags")
 	target := flag.String("target", "", "chip/board name or JSON target specification file")
@@ -1857,43 +1724,42 @@ func main() {
 	}
 
 	options := &compileopts.Options{
-		GOOS:                    goenv.Get("GOOS"),
+		GOOS:            goenv.Get("GOOS"),
-		GOARCH:                  goenv.Get("GOARCH"),
+		GOARCH:          goenv.Get("GOARCH"),
-		GOARM:                   goenv.Get("GOARM"),
+		GOARM:           goenv.Get("GOARM"),
-		GOMIPS:                  goenv.Get("GOMIPS"),
+		GOMIPS:          goenv.Get("GOMIPS"),
-		Target:                  *target,
+		Target:          *target,
-		BuildMode:               *buildMode,
+		BuildMode:       *buildMode,
-		StackSize:               stackSize,
+		StackSize:       stackSize,
-		Opt:                     *opt,
+		Opt:             *opt,
-		GC:                      *gc,
+		GC:              *gc,
-		PanicStrategy:           *panicStrategy,
+		PanicStrategy:   *panicStrategy,
-		Scheduler:               *scheduler,
+		Scheduler:       *scheduler,
-		Serial:                  *serial,
+		Serial:          *serial,
-		Work:                    *work,
+		Work:            *work,
-		InterpTimeout:           *interpTimeout,
+		InterpTimeout:   *interpTimeout,
-		InterpMaxLoopIterations: *interpLoopLimit,
+		PrintIR:         *printIR,
-		PrintIR:                 *printIR,
+		DumpSSA:         *dumpSSA,
-		DumpSSA:                 *dumpSSA,
+		VerifyIR:        *verifyIR,
-		VerifyIR:                *verifyIR,
+		SkipDWARF:       *skipDwarf,
-		SkipDWARF:               *skipDwarf,
+		Semaphore:       make(chan struct{}, *parallelism),
-		Semaphore:               make(chan struct{}, *parallelism),
+		Debug:           !*nodebug,
-		Debug:                   !*nodebug,
+		Nobounds:        *nobounds,
-		Nobounds:                *nobounds,
+		PrintSizes:      *printSize,
-		PrintSizes:              *printSize,
+		PrintStacks:     *printStacks,
-		PrintStacks:             *printStacks,
+		PrintAllocs:     printAllocs,
-		PrintAllocs:             printAllocs,
+		Tags:            []string(tags),
-		Tags:                    []string(tags),
+		TestConfig:      testConfig,
-		TestConfig:              testConfig,
+		GlobalValues:    globalVarValues,
-		GlobalValues:            globalVarValues,
+		Programmer:      *programmer,
-		Programmer:              *programmer,
+		OpenOCDCommands: ocdCommands,
-		OpenOCDCommands:         ocdCommands,
+		LLVMFeatures:    *llvmFeatures,
-		LLVMFeatures:            *llvmFeatures,
+		Monitor:         *monitor,
-		Monitor:                 *monitor,
+		BaudRate:        *baudrate,
-		BaudRate:                *baudrate,
+		Timeout:         *timeout,
-		Timeout:                 *timeout,
+		WITPackage:      witPackage,
-		WITPackage:              witPackage,
+		WITWorld:        witWorld,
-		WITWorld:                witWorld,
+		GoCompatibility: *gocompatibility,
-		GoCompatibility:         *gocompatibility,
 	}
 	if *printCommands {
 		options.PrintCommands = printCommand

main_test.go

@@ -77,7 +77,6 @@ func TestBuild(t *testing.T) {
 		"interface.go",
 		"json.go",
 		"map.go",
-		"map_bigkey.go",
 		"math.go",
 		"oldgo/",
 		"print.go",
@@ -108,9 +107,6 @@ func TestBuild(t *testing.T) {
 	if minor >= 23 {
 		tests = append(tests, "go1.23/")
 	}
-	if minor >= 24 {
-		tests = append(tests, "typealias.go")
-	}
 
 	if *testTarget != "" {
 		// This makes it possible to run one specific test (instead of all),
@@ -156,19 +152,6 @@ func TestBuild(t *testing.T) {
 			}
 			runTestWithConfig("ldflags.go", t, opts, nil, nil)
 		})
-
-		// Same as ldflags, but the global has a default value in source.
-		// -ldflags -X must override it, matching standard Go behaviour.
-		t.Run("ldflags-initialized", func(t *testing.T) {
-			t.Parallel()
-			opts := optionsFromTarget("", sema)
-			opts.GlobalValues = map[string]map[string]string{
-				"main": {
-					"someGlobal": "foobar",
-				},
-			}
-			runTestWithConfig("ldflags-initialized.go", t, opts, nil, nil)
-		})
 	})
 
 	if testing.Short() {
@@ -239,7 +222,6 @@ func TestBuild(t *testing.T) {
 			// to be sure.
 			t.Parallel()
 			options := optionsFromOSARCH("linux/mipsle/softfloat", sema)
-			emuCheck(t, options)
 			runTest("cgo/", options, t, nil, nil)
 		})
 	} else if runtime.GOOS == "windows" {
@@ -297,11 +279,6 @@ func runPlatTests(options compileopts.Options, tests []string, t *testing.T) {
 				// limited amount of memory.
 				continue
 
-			case "map_bigkey.go":
-				// Compiler generates many large stack temporaries for [256]byte
-				// map keys, overflowing the goroutine stack (384 bytes).
-				continue
-
 			case "gc.go":
 				// Does not pass due to high mark false positive rate.
 				continue
@@ -473,7 +450,7 @@ func runTestWithConfig(name string, t *testing.T, options compileopts.Options, c
 
 	// Build the test binary.
 	stdout := &bytes.Buffer{}
-	_, err = buildAndRun(pkgName, config, stdout, cmdArgs, environmentVars, 2*time.Minute, func(cmd *exec.Cmd, result builder.BuildResult) error {
+	_, err = buildAndRun(pkgName, config, stdout, cmdArgs, environmentVars, time.Minute, func(cmd *exec.Cmd, result builder.BuildResult) error {
 		return cmd.Run()
 	})
 	if err != nil {

src/crypto/internal/entropy/v1.0.0/entropy.go

@@ -1,56 +0,0 @@
-// Copyright 2025 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Stripped-down version of the entropy package for TinyGo.
-//
-// The upstream Go 1.26 package allocates a [1<<25]byte (32 MiB) global buffer
-// for CPU jitter-based SP 800-90B entropy collection. This is fine on systems
-// with virtual memory where BSS pages are lazily backed, but it causes a fatal
-// "RAM overflowed" error on microcontrollers and other memory-constrained
-// targets.
-//
-// Because FIPS 140-3 jitter entropy is never used on TinyGo targets (the DRBG
-// falls through to sysrand.Read when fips140.Enabled is false), this overlay
-// replaces the 32 MiB buffer with a zero-size type.
-package entropy
-
-// Version returns the version of the entropy source.
-func Version() string {
-	return "v1.0.0"
-}
-
-// ScratchBuffer is a large buffer in upstream Go (32 MiB). TinyGo replaces it
-// with a zero-size type since the CPU jitter entropy source is not used.
-type ScratchBuffer [0]byte
-
-// Seed returns a 384-bit seed with full entropy.
-// On TinyGo targets this is never called because FIPS mode is not enabled.
-func Seed(memory *ScratchBuffer) ([48]byte, error) {
-	panic("entropy: CPU jitter entropy source is not supported on TinyGo targets")
-}
-
-// Samples collects entropy samples. Not supported on TinyGo targets.
-func Samples(samples []uint8, memory *ScratchBuffer) error {
-	panic("entropy: CPU jitter entropy source is not supported on TinyGo targets")
-}
-
-// SHA384 computes SHA-384 over 1024 bytes. Not supported on TinyGo targets.
-func SHA384(p *[1024]byte) [48]byte {
-	panic("entropy: CPU jitter entropy source is not supported on TinyGo targets")
-}
-
-// TestingOnlySHA384 computes SHA-384 over arbitrary bytes. Not supported on TinyGo targets.
-func TestingOnlySHA384(p []byte) [48]byte {
-	panic("entropy: CPU jitter entropy source is not supported on TinyGo targets")
-}
-
-// RepetitionCountTest implements the repetition count test from SP 800-90B.
-func RepetitionCountTest(samples []uint8) error {
-	panic("entropy: CPU jitter entropy source is not supported on TinyGo targets")
-}
-
-// AdaptiveProportionTest implements the adaptive proportion test from SP 800-90B.
-func AdaptiveProportionTest(samples []uint8) error {
-	panic("entropy: CPU jitter entropy source is not supported on TinyGo targets")
-}

src/crypto/rand/rand_baremetal.go

@@ -1,4 +1,4 @@
-//go:build nrf || (stm32 && !(stm32f103 || stm32l0x1)) || (sam && atsamd51) || (sam && atsame5x) || esp32c3 || esp32s3 || tkey || (tinygo.riscv32 && virt)
+//go:build nrf || (stm32 && !(stm32f103 || stm32l0x1)) || (sam && atsamd51) || (sam && atsame5x) || esp32c3 || tkey || (tinygo.riscv32 && virt)
 
 // If you update the above build constraint, you'll probably also need to update
 // src/runtime/rand_hwrng.go.

src/device/esp/esp32s3.S

@@ -1,397 +0,0 @@
-// Startup code for the ESP32-S3 (Xtensa LX7, windowed ABI).
-//
-// The ROM bootloader loads IRAM/DRAM segments into SRAM but does NOT
-// configure flash cache/MMU.  We must:
-//   1. Set up the windowed-ABI register file and stack pointer.
-//   2. Set VECBASE and clear PS.EXCM (needed for callx4 window overflows).
-//   3. Disable watchdog timers.
-//   4. Configure the flash cache and MMU so IROM/DROM are accessible.
-//   5. Jump to runtime.main (in IROM).
-//
-// Cache/MMU init sequence (from NuttX esp_loader.c / ESP-IDF bootloader / esp-hal):
-//   Phase A — configure cache modes:
-//     a. rom_config_instruction_cache_mode(16KB, 8-way, 32B)
-//     b. rom_Cache_Suspend_DCache()
-//     c. rom_config_data_cache_mode(32KB, 8-way, 32B)
-//     d. Cache_Resume_DCache(0)
-//   Phase B — map flash pages:
-//     e. Disable caches
-//     f. Cache_MMU_Init() — reset all MMU entries to invalid
-//     g. Cache_Set_IDROM_MMU_Size() — set IROM/DROM entry split
-//     h. Write MMU entries mapping flash page 0 for IROM and DROM
-//     i. Clear bus-shut bits
-//     j. Enable caches + isync
-
-#define PS_WOE   0x00040000
-
-// -----------------------------------------------------------------------
-// Boot entry point — placed in IRAM by the linker.
-// -----------------------------------------------------------------------
-.section .text.call_start_cpu0
-    .literal_position
-    .align 4
-.Lstack_top_addr:
-    .long _stack_top
-.Lmain_addr:
-    .long main
-.Lvector_table_addr:
-    .long _vector_table
-// WDT register addresses
-.Lwdt_key:
-    .long 0x50D83AA1
-.Lrtc_wdt_protect:
-    .long 0x600080B0
-.Lrtc_wdt_config0:
-    .long 0x60008098
-.Ltimg0_wdt_protect:
-    .long 0x6001F064
-.Ltimg0_wdt_config0:
-    .long 0x6001F048
-.Ltimg1_wdt_protect:
-    .long 0x60020064
-.Ltimg1_wdt_config0:
-    .long 0x60020048
-.Lswd_protect:
-    .long 0x600080B8
-.Lswd_key:
-    .long 0x8F1D312A
-.Lswd_conf:
-    .long 0x600080B4
-.Lswd_disable:
-    .long 0x40000000
-// ROM function addresses (from ESP-IDF esp32s3.rom.ld)
-.Lrom_config_icache:
-    .long 0x40001a1c
-.Lrom_config_dcache:
-    .long 0x40001a28
-.Lrom_suspend_dcache:
-    .long 0x400018b4
-.LCache_Resume_DCache:
-    .long 0x400018c0
-.LCache_Disable_ICache:
-    .long 0x4000186c
-.LCache_Disable_DCache:
-    .long 0x40001884
-.LCache_MMU_Init:
-    .long 0x40001998
-.LCache_Set_IDROM_MMU_Size:
-    .long 0x40001914
-.LCache_Enable_ICache:
-    .long 0x40001878
-.LCache_Enable_DCache:
-    .long 0x40001890
-// Cache/MMU register addresses
-.Lmmu_table_base:
-    .long 0x600C5000
-.Licache_ctrl1_reg:
-    .long 0x600C4064
-.Ldcache_ctrl1_reg:
-    .long 0x600C4004
-// End-of-section symbols for multi-page MMU mapping.
-.Lirom_end:
-    .long _irom_end
-.Ldrom_end:
-    .long _drom_end
-.Lirom_base:
-    .long 0x42000000
-.Ldrom_base:
-    .long 0x3C000000
-
-.global call_start_cpu0
-call_start_cpu0:
-
-    // ---- 1. Windowed-ABI register file setup ----
-
-    // Disable WOE so we can safely manipulate WINDOWSTART.
-    rsr.ps a2
-    movi a3, ~(PS_WOE)
-    and a2, a2, a3
-    wsr.ps a2
-    rsync
-
-    // Set WINDOWSTART to 1 << WINDOWBASE (mark only current window as valid).
-    rsr.windowbase  a2
-    ssl  a2
-    movi a2, 1
-    sll  a2, a2
-    wsr.windowstart a2
-    rsync
-
-    // Load stack pointer.
-    l32r a1, .Lstack_top_addr
-
-    // Re-enable WOE.
-    rsr.ps a2
-    movi a3, PS_WOE
-    or a2, a2, a3
-    wsr.ps a2
-    rsync
-
-    // Enable FPU (coprocessor 0).
-    movi a2, 1
-    wsr.cpenable a2
-    rsync
-
-    // ---- 2. Disable all watchdog timers (IMMEDIATELY, before any delay) ----
-    l32r a3, .Lwdt_key
-    movi a4, 0
-
-    // RTC WDT
-    l32r a2, .Lrtc_wdt_protect
-    memw
-    s32i a3, a2, 0
-    l32r a5, .Lrtc_wdt_config0
-    memw
-    s32i a4, a5, 0
-    memw
-    s32i a4, a2, 0
-
-    // TIMG0 WDT
-    l32r a2, .Ltimg0_wdt_protect
-    memw
-    s32i a3, a2, 0
-    l32r a5, .Ltimg0_wdt_config0
-    memw
-    s32i a4, a5, 0
-    memw
-    s32i a4, a2, 0
-
-    // TIMG1 WDT
-    l32r a2, .Ltimg1_wdt_protect
-    memw
-    s32i a3, a2, 0
-    l32r a5, .Ltimg1_wdt_config0
-    memw
-    s32i a4, a5, 0
-    memw
-    s32i a4, a2, 0
-
-    // Super WDT
-    l32r a2, .Lswd_protect
-    l32r a3, .Lswd_key
-    memw
-    s32i a3, a2, 0
-    l32r a5, .Lswd_conf
-    l32r a6, .Lswd_disable
-    memw
-    s32i a6, a5, 0
-    memw
-    s32i a4, a2, 0
-
-    // ---- 3. Set VECBASE and clear PS.EXCM ----
-    // VECBASE must be set before any callx4 so that window overflow
-    // exceptions (triggered by register window rotation) route to our
-    // handlers in IRAM, not the ROM's default vectors.
-    l32r a8, .Lvector_table_addr
-    wsr.vecbase a8
-    rsync
-
-    // Clear PS.EXCM (bit 4) and PS.INTLEVEL (bits 0-3).
-    // The ROM bootloader may leave EXCM=1; with EXCM set any callx4
-    // window overflow would become a double exception.
-    // Set PS.UM (bit 5) so level-1 exceptions route to User vector.
-    rsr.ps a2
-    movi a3, ~0x1F
-    and a2, a2, a3
-    movi a3, 0x20
-    or a2, a2, a3
-    wsr.ps a2
-    rsync
-
-    // ---- 4. Configure flash cache and MMU ----
-    //
-    // ROM function calls use callx4 (windowed ABI):
-    //   a4 = target address (overwritten with return addr by call mechanism)
-    //   a5 = stack pointer for callee (becomes callee's a1 via entry)
-    //   a6 = first argument  (becomes callee's a2)
-    //   a7 = second argument (becomes callee's a3)
-    //   a8 = third argument  (becomes callee's a4)
-    // Registers a0-a3 are preserved across callx4; a4-a11 may be clobbered.
-
-    // Phase A: Configure cache modes (required for cache hardware to function).
-    // Without this, the cache doesn't know its size/associativity/line-size
-    // and cannot service flash accesses.
-
-    // 4a. Configure ICache mode: 16KB, 8-way, 32-byte line
-    movi a6, 0x4000         // cache_size = 16KB
-    movi a7, 8              // ways = 8
-    movi a8, 32             // line_size = 32
-    mov  a5, a1
-    l32r a4, .Lrom_config_icache
-    callx4 a4
-
-    // 4b. Suspend DCache before configuring it
-    mov  a5, a1
-    l32r a4, .Lrom_suspend_dcache
-    callx4 a4
-
-    // 4c. Configure DCache mode: 32KB, 8-way, 32-byte line
-    movi a6, 0x8000         // cache_size = 32KB
-    movi a7, 8              // ways = 8
-    movi a8, 32             // line_size = 32
-    mov  a5, a1
-    l32r a4, .Lrom_config_dcache
-    callx4 a4
-
-    // 4d. Resume DCache
-    movi a6, 0
-    mov  a5, a1
-    l32r a4, .LCache_Resume_DCache
-    callx4 a4
-
-    // Phase B: Map flash pages into MMU.
-
-    // 4e. Disable ICache
-    mov  a5, a1
-    l32r a4, .LCache_Disable_ICache
-    callx4 a4
-
-    // 4f. Disable DCache
-    mov  a5, a1
-    l32r a4, .LCache_Disable_DCache
-    callx4 a4
-
-    // 4g. Initialize MMU (resets all 512 entries to invalid = 0x4000)
-    mov  a5, a1
-    l32r a4, .LCache_MMU_Init
-    callx4 a4
-
-    // 4h. Set IDROM MMU size: even 256/256 split.
-    //     Each entry is 4 bytes, so 256 entries = 0x400 bytes per region.
-    movi a6, 0x400          // irom_mmu_size  (256 entries × 4 bytes)
-    movi a7, 0x400          // drom_mmu_size  (256 entries × 4 bytes)
-    mov  a5, a1
-    l32r a4, .LCache_Set_IDROM_MMU_Size
-    callx4 a4
-
-    // 4i. Map flash pages for IROM and DROM using identity mapping.
-    //     MMU table at 0x600C5000: entries 0-255 = ICache, 256-511 = DCache.
-    //     Entry value N = flash page N (SOC_MMU_VALID = 0 on S3).
-    //     Each 64KB page needs one 4-byte entry.
-    //
-    //     IROM: map pages 0..N where N = (_irom_end - 0x42000000) >> 16
-    //     DROM: map pages 0..M where M = (_drom_end - 0x3C000000) >> 16
-
-    l32r a8, .Lmmu_table_base          // a8 = 0x600C5000
-
-    // --- IROM pages ---
-    l32r a2, .Lirom_end                // a2 = _irom_end (VMA in 0x42xxxxxx)
-    l32r a3, .Lirom_base               // a3 = 0x42000000
-    sub  a2, a2, a3                    // a2 = byte offset past IROM base
-    srli a2, a2, 16                    // a2 = last page index
-    addi a2, a2, 1                     // a2 = number of pages to map
-    movi a9, 0                         // a9 = page counter (and entry value)
-    mov  a10, a8                       // a10 = current MMU entry pointer
-.Lirom_loop:
-    s32i a9, a10, 0
-    addi a9, a9, 1
-    addi a10, a10, 4
-    blt  a9, a2, .Lirom_loop
-
-    // --- DROM pages ---
-    l32r a2, .Ldrom_end                // a2 = _drom_end (VMA in 0x3Cxxxxxx)
-    l32r a3, .Ldrom_base               // a3 = 0x3C000000
-    sub  a2, a2, a3                    // a2 = byte offset past DROM base
-    srli a2, a2, 16                    // a2 = last page index
-    addi a2, a2, 1                     // a2 = number of pages to map
-    movi a9, 0                         // a9 = page counter (and entry value)
-    addmi a10, a8, 0x400              // a10 = 0x600C5400 (DCache entry 256)
-.Ldrom_loop:
-    s32i a9, a10, 0
-    addi a9, a9, 1
-    addi a10, a10, 4
-    blt  a9, a2, .Ldrom_loop
-    memw
-
-    // 4j. Clear bus-shut bits so core 0 can access ICache and DCache buses.
-    l32r a8, .Licache_ctrl1_reg         // 0x600C4064
-    movi a9, 0
-    s32i a9, a8, 0                      // Clear all ICACHE_CTRL1 shut bits
-    l32r a8, .Ldcache_ctrl1_reg         // 0x600C4004
-    s32i a9, a8, 0                      // Clear all DCACHE_CTRL1 shut bits
-    memw
-
-    // 4k. Enable ICache (arg: autoload = 0)
-    movi a6, 0
-    mov  a5, a1
-    l32r a4, .LCache_Enable_ICache
-    callx4 a4
-
-    // 4l. Enable DCache (arg: autoload = 0)
-    movi a6, 0
-    mov  a5, a1
-    l32r a4, .LCache_Enable_DCache
-    callx4 a4
-
-    // Flush instruction pipeline so new cache/MMU config takes effect.
-    isync
-
-    // ---- 5. Jump to main (in IROM) ----
-    // Re-clear PS.EXCM in case ROM calls changed processor state.
-    rsr.ps a2
-    movi a3, ~0x1F
-    and a2, a2, a3
-    movi a3, 0x20
-    or a2, a2, a3
-    wsr.ps a2
-    rsync
-
-    mov  a5, a1
-    l32r a4, .Lmain_addr
-    callx4 a4
-
-    // If main returns, loop forever.
-1:  j 1b
-
-// -----------------------------------------------------------------------
-// tinygo_scanCurrentStack — Spill all Xtensa register windows to the
-// stack, then call tinygo_scanstack(sp) so the conservative GC can
-// discover live heap pointers that are currently in physical registers.
-//
-// On RISC-V / ARM the equivalent function pushes callee-saved registers
-// before the call.  On Xtensa windowed ABI the same effect is achieved
-// by forcing hardware window-overflow for every occupied pane: each
-// overflow saves the four registers in that pane to the stack frame
-// pointed to by the pane's a1 (sp).  After all panes are flushed, a
-// scan from the current sp to stackTop covers every live value.
-// -----------------------------------------------------------------------
-.section .text.tinygo_scanCurrentStack
-
-.global tinygo_scanCurrentStack
-tinygo_scanCurrentStack:
-    entry a1, 48
-
-    // Disable interrupts while flushing register windows.
-    rsr   a4, PS
-    s32i  a4, a1, 0         // save PS for later restore
-    rsil  a4, 3             // XCHAL_EXCM_LEVEL
-
-    // Flush all register windows using recursive call4.
-    // For NAREG=64 (16 panes), 15 recursive levels cover all panes
-    // except the current one (which is kept active).
-    movi a6, 15
-    call4 .Lscan_spill
-
-    // Restore interrupts.
-    l32i  a4, a1, 0
-    wsr.ps a4
-    rsync
-
-    // Pass current sp to tinygo_scanstack.
-    // call4 maps caller's a5→callee's a1 (stack ptr for callee's entry)
-    // and caller's a6→callee's a2 (first argument = sp).
-    mov  a5, a1             // callee's a1 = valid stack pointer
-    mov  a6, a1             // callee's a2 = sp argument
-    call4 tinygo_scanstack
-
-    retw
-
-    .balign 4
-.Lscan_spill:
-    entry a1, 16
-    beqz  a2, .Lscan_spill_done
-    addi  a2, a2, -1
-    mov   a6, a2
-    call4 .Lscan_spill
-.Lscan_spill_done:
-    retw

src/device/riscv/handleinterrupt.S

@@ -75,10 +75,6 @@ handleInterruptASM:
     SFREG   f30,(30 + 16)*REGSIZE(sp)
     SFREG   f31,(31 + 16)*REGSIZE(sp)
 #endif
-    // Save ra to a global so handleException can print the caller of the NULL
-    // function pointer.
-    la      t0, tinygo_saved_ra
-    SREG    ra, 0(t0)
     call    handleInterrupt
 #ifdef __riscv_flen
     LFREG   f0, (31 + 16)*REGSIZE(sp)
@@ -132,10 +128,3 @@ handleInterruptASM:
     LREG    ra, 0*REGSIZE(sp)
     addi    sp, sp, NREG*REGSIZE
     mret
-
-.section .bss.tinygo_saved_ra
-.global tinygo_saved_ra
-.type tinygo_saved_ra,@object
-.align 2
-tinygo_saved_ra:
-    .space REGSIZE

src/examples/adc/adc.go

@@ -5,15 +5,25 @@ import (
 	"time"
 )
 
+// This example assumes that an analog sensor such as a rotary dial is connected to pin ADC0.
+// When the dial is turned past the midway point, the built-in LED will light up.
+
 func main() {
 	machine.InitADC()
 
+	led := machine.LED
+	led.Configure(machine.PinConfig{Mode: machine.PinOutput})
+
 	sensor := machine.ADC{machine.ADC2}
 	sensor.Configure(machine.ADCConfig{})
 
 	for {
 		val := sensor.Get()
-		println(val)
+		if val < 0x8000 {
-		time.Sleep(time.Millisecond * 500)
+			led.Low()
+		} else {
+			led.High()
+		}
+		time.Sleep(time.Millisecond * 100)
 	}
 }

src/examples/pininterrupt/arduino.go

@@ -1,4 +1,4 @@
-//go:build arduino_uno
+//go:build arduino
 
 package main
 

src/examples/pininterrupt/xiao-esp32s3.go

@@ -1,11 +0,0 @@
-//go:build xiao_esp32s3
-
-package main
-
-import "machine"
-
-const (
-	button          = machine.D1
-	buttonMode      = machine.PinInputPullup
-	buttonPinChange = machine.PinFalling
-)

src/examples/pwm/arduino-uno-q.go

@@ -1,11 +0,0 @@
-//go:build arduino_uno_q
-
-package main
-
-import "machine"
-
-var (
-	pwm  = &machine.TIM3
-	pinA = machine.D3 // PB0 = TIM3_CH3
-	pinB = machine.D6 // PB1 = TIM3_CH4
-)

src/examples/pwm/arduino.go

@@ -1,4 +1,4 @@
-//go:build arduino_uno
+//go:build arduino
 
 package main
 

src/examples/pwm/digispark.go

@@ -1,12 +0,0 @@
-//go:build digispark
-
-package main
-
-import "machine"
-
-var (
-	// Use Timer1 for PWM (recommended for ATtiny85)
-	pwm  = machine.Timer1
-	pinA = machine.P1 // PB1, Timer1 channel A (LED pin)
-	pinB = machine.P4 // PB4, Timer1 channel B
-)

src/examples/pwm/esp32c3-supermini.go

@@ -1,11 +0,0 @@
-//go:build esp32c3_supermini
-
-package main
-
-import "machine"
-
-var (
-	pwm  = machine.PWM0
-	pinA = machine.GPIO5
-	pinB = machine.GPIO6
-)

src/examples/pwm/pico2.go

@@ -1,11 +0,0 @@
-//go:build pico2 || pico_plus2
-
-package main
-
-import "machine"
-
-var (
-	pwm = machine.PWM0 // Pin 25 (LED on pico2) corresponds to PWM0.
-	//pinA = machine.LED
-	pinA = machine.GPIO16
-)