machine: add tool to check consistency with documentation

This tool checks whether the machine package matches the documentation
in https://tinygo.org/docs/reference/machine/.

.circleci/config.yml

@@ -22,12 +22,12 @@ commands:
     steps:
       - restore_cache:
           keys:
-            - llvm-source-14-v2
+            - llvm-source-14-v3
       - run:
           name: "Fetch LLVM source"
           command: make llvm-source
       - save_cache:
-          key: llvm-source-14-v2
+          key: llvm-source-14-v3
           paths:
             - llvm-project/clang/lib/Headers
             - llvm-project/clang/include
@@ -45,29 +45,32 @@ commands:
     steps:
       - restore_cache:
           keys:
-            - binaryen-linux-v1
+            - binaryen-linux-v2
       - run:
           name: "Build Binaryen"
           command: |
             make binaryen
       - save_cache:
-          key: binaryen-linux-v1
+          key: binaryen-linux-v2
           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/buster/ llvm-toolchain-buster-<<parameters.llvm>> main' | sudo tee /etc/apt/sources.list.d/llvm.list
-            wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
-            sudo apt-get update
-            sudo apt-get install --no-install-recommends \
+            echo 'deb https://apt.llvm.org/buster/ llvm-toolchain-buster-<<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 \
@@ -80,38 +83,46 @@ commands:
       - build-binaryen-linux
       - restore_cache:
           keys:
-            - go-cache-v2-{{ checksum "go.mod" }}-{{ .Environment.CIRCLE_PREVIOUS_BUILD_NUM }}
-            - go-cache-v2-{{ checksum "go.mod" }}
+            - go-cache-v3-{{ checksum "go.mod" }}-{{ .Environment.CIRCLE_PREVIOUS_BUILD_NUM }}
+            - go-cache-v3-{{ checksum "go.mod" }}
       - llvm-source-linux
       - run: go install -tags=llvm<<parameters.llvm>> .
       - restore_cache:
           keys:
-            - wasi-libc-sysroot-systemclang-v5
+            - wasi-libc-sysroot-systemclang-v6
       - run: make wasi-libc
       - save_cache:
-          key: wasi-libc-sysroot-systemclang-v5
+          key: wasi-libc-sysroot-systemclang-v6
           paths:
             - lib/wasi-libc/sysroot
+      - 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
       - run: make gen-device -j4
       - run: make smoketest XTENSA=0
       - save_cache:
-          key: go-cache-v2-{{ checksum "go.mod" }}-{{ .Environment.CIRCLE_BUILD_NUM }}
+          key: go-cache-v3-{{ checksum "go.mod" }}-{{ .Environment.CIRCLE_BUILD_NUM }}
           paths:
             - ~/.cache/go-build
             - /go/pkg/mod
-      - run: make fmt-check
 
 jobs:
-  test-llvm13-go116:
+  test-llvm14-go118:
     docker:
-      - image: circleci/golang:1.16-buster
+      - image: golang:1.18-buster
     steps:
       - test-linux:
-          llvm: "13"
+          llvm: "14"
+    resource_class: large
 
 workflows:
   test-all:
     jobs:
       # This tests our lowest supported versions of Go and LLVM, to make sure at
       # least the smoke tests still pass.
-      - test-llvm13-go116
+      - test-llvm14-go118

.github/workflows/build-macos.yml

@@ -7,15 +7,15 @@ on:
       - dev
       - release
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build-macos:
     name: build-macos
     runs-on: macos-11
     steps:
-      - name: Install Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: '1.18.1'
       - name: Install Dependencies
         shell: bash
         run: |
@@ -31,8 +31,13 @@ jobs:
         uses: actions/checkout@v2
         with:
           submodules: true
+      - name: Install Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: '1.19'
+          cache: true
       - name: Cache LLVM source
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: cache-llvm-source
         with:
           key: llvm-source-14-macos-v1
@@ -46,7 +51,7 @@ jobs:
         if: steps.cache-llvm-source.outputs.cache-hit != 'true'
         run: make llvm-source
       - name: Cache LLVM build
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: cache-llvm-build
         with:
           key: llvm-build-14-macos-v1
@@ -64,10 +69,10 @@ jobs:
           make llvm-build
           find llvm-build -name CMakeFiles -prune -exec rm -r '{}' \;
       - name: Cache wasi-libc sysroot
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: cache-wasi-libc
         with:
-          key: wasi-libc-sysroot-v3
+          key: wasi-libc-sysroot-v4
           path: lib/wasi-libc/sysroot
       - name: Build wasi-libc
         if: steps.cache-wasi-libc.outputs.cache-hit != 'true'
@@ -96,3 +101,22 @@ jobs:
       - name: Smoke tests
         shell: bash
         run: make smoketest TINYGO=$(PWD)/build/tinygo AVR=0
+  test-macos-homebrew:
+    name: homebrew-install
+    runs-on: macos-latest
+    steps:
+      - name: Install LLVM
+        shell: bash
+        run: |
+          HOMEBREW_NO_AUTO_UPDATE=1 brew install llvm@14
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Install Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: '1.19'
+          cache: true
+      - name: Build TinyGo
+        run: go install
+      - name: Check binary
+        run: tinygo version

.github/workflows/docker.yml

@@ -7,6 +7,10 @@ on:
   push:
     branches: [ dev, fix-docker-llvm-build ]
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   push_to_registry:
     name: build-push-dev
@@ -51,18 +55,20 @@ jobs:
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha
           cache-to: type=gha,mode=max
-      - name: Trigger Drivers repo build on CircleCI
+      - name: Trigger Drivers repo build on Github Actions
         run: |
-          curl --location --request POST 'https://circleci.com/api/v2/project/github/tinygo-org/drivers/pipeline' \
-            --header 'Content-Type: application/json' \
-            -d '{"branch": "dev"}' \
-            -u "${{ secrets.CIRCLECI_API_TOKEN }}"
-      - name: Trigger Bluetooth repo build on CircleCI
+          curl -X POST \
+          -H "Authorization: Bearer ${{secrets.GHA_ACCESS_TOKEN}}" \
+          -H "Accept: application/vnd.github.v3+json" \
+          https://api.github.com/repos/tinygo-org/drivers/actions/workflows/build.yml/dispatches \
+          -d '{"ref": "dev"}'
+      - name: Trigger Bluetooth repo build on Github Actions
         run: |
-          curl --location --request POST 'https://circleci.com/api/v2/project/github/tinygo-org/bluetooth/pipeline' \
-            --header 'Content-Type: application/json' \
-            -d '{"branch": "dev"}' \
-            -u "${{ secrets.CIRCLECI_API_TOKEN }}"
+          curl -X POST \
+          -H "Authorization: Bearer ${{secrets.GHA_ACCESS_TOKEN}}" \
+          -H "Accept: application/vnd.github.v3+json" \
+          https://api.github.com/repos/tinygo-org/bluetooth/actions/workflows/linux.yml/dispatches \
+          -d '{"ref": "dev"}'
       - name: Trigger TinyFS repo build on CircleCI
         run: |
           curl --location --request POST 'https://circleci.com/api/v2/project/github/tinygo-org/tinyfs/pipeline' \

.github/workflows/linux.yml

@@ -7,38 +7,43 @@ on:
       - dev
       - release
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build-linux:
     # Build Linux binaries, ready for release.
-    # This intentionally uses an older Linux image, so that we compile against
-    # an older glibc version and therefore are compatible with a wide range of
-    # Linux distributions.
-    runs-on: ubuntu-18.04
+    # This runs inside an Alpine Linux container so we can more easily create a
+    # statically linked binary.
+    runs-on: ubuntu-latest
+    container:
+      image: golang:1.19-alpine
     steps:
+      - name: Install apk dependencies
+        # tar: needed for actions/cache@v3
+        # git+openssh: needed for checkout (I think?)
+        # ruby: needed to install fpm
+        run: apk add tar git openssh make g++ ruby
+      - name: Work around CVE-2022-24765
+        # We're not on a multi-user machine, so this is safe.
+        run: git config --global --add safe.directory "$GITHUB_WORKSPACE"
       - name: Checkout
         uses: actions/checkout@v2
         with:
           submodules: true
-      - name: Install apt dependencies
-        run: |
-          sudo apt-get install --no-install-recommends \
-              ninja-build
-      - name: Install Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: '1.18.1'
       - name: Cache Go
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
-          key: go-cache-linux-v1-${{ hashFiles('go.mod') }}
+          key: go-cache-linux-alpine-v1-${{ hashFiles('go.mod') }}
           path: |
             ~/.cache/go-build
             ~/go/pkg/mod
       - name: Cache LLVM source
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: cache-llvm-source
         with:
-          key: llvm-source-14-linux-v2
+          key: llvm-source-14-linux-alpine-v1
           path: |
             llvm-project/clang/lib/Headers
             llvm-project/clang/include
@@ -49,10 +54,10 @@ jobs:
         if: steps.cache-llvm-source.outputs.cache-hit != 'true'
         run: make llvm-source
       - name: Cache LLVM build
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: cache-llvm-build
         with:
-          key: llvm-build-14-linux-v1
+          key: llvm-build-14-linux-alpine-v1
           path: llvm-build
       - name: Build LLVM
         if: steps.cache-llvm-build.outputs.cache-hit != 'true'
@@ -60,34 +65,40 @@ jobs:
           # fetch LLVM source
           rm -rf llvm-project
           make llvm-source
+          # install dependencies
+          apk add cmake samurai python3
           # build!
           make llvm-build
           # Remove unnecessary object files (to reduce cache size).
           find llvm-build -name CMakeFiles -prune -exec rm -r '{}' \;
       - name: Cache Binaryen
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: cache-binaryen
         with:
-          key: binaryen-linux-v1
+          key: binaryen-linux-alpine-v1
           path: build/wasm-opt
       - name: Build Binaryen
         if: steps.cache-binaryen.outputs.cache-hit != 'true'
-        run: make binaryen
+        run: |
+          apk add cmake samurai python3
+          make binaryen STATIC=1
       - name: Cache wasi-libc
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: cache-wasi-libc
         with:
-          key: wasi-libc-sysroot-linux-asserts-v4
+          key: wasi-libc-sysroot-linux-alpine-v1
           path: lib/wasi-libc/sysroot
       - name: Build wasi-libc
         if: steps.cache-wasi-libc.outputs.cache-hit != 'true'
         run: make wasi-libc
       - name: Install fpm
         run: |
-          sudo gem install --no-document fpm
+          gem install --version 4.0.7 public_suffix
+          gem install --version 2.7.6 dotenv
+          gem install --no-document fpm
       - name: Build TinyGo release
         run: |
-          make release deb -j3
+          make release deb -j3 STATIC=1
           cp -p build/release.tar.gz /tmp/tinygo.linux-amd64.tar.gz
           cp -p build/release.deb    /tmp/tinygo_amd64.deb
       - name: Publish release artifact
@@ -105,9 +116,10 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
       - name: Install Go
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v3
         with:
-          go-version: '1.18.1'
+          go-version: '1.19'
+          cache: true
       - name: Install wasmtime
         run: |
           curl https://wasmtime.dev/install.sh -sSf | bash
@@ -157,26 +169,20 @@ jobs:
               simavr \
               ninja-build
       - name: Install Go
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v3
         with:
-          go-version: '1.18.1'
+          go-version: '1.19'
+          cache: true
       - name: Install Node.js
         uses: actions/setup-node@v2
         with:
-          node-version: '12'
+          node-version: '14'
       - name: Install wasmtime
         run: |
           curl https://wasmtime.dev/install.sh -sSf | bash
           echo "$HOME/.wasmtime/bin" >> $GITHUB_PATH
-      - name: Cache Go
-        uses: actions/cache@v2
-        with:
-          key: go-cache-linux-asserts-v1-${{ hashFiles('go.mod') }}
-          path: |
-            ~/.cache/go-build
-            ~/go/pkg/mod
       - name: Cache LLVM source
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: cache-llvm-source
         with:
           key: llvm-source-14-linux-asserts-v2
@@ -190,7 +196,7 @@ jobs:
         if: steps.cache-llvm-source.outputs.cache-hit != 'true'
         run: make llvm-source
       - name: Cache LLVM build
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: cache-llvm-build
         with:
           key: llvm-build-14-linux-asserts-v1
@@ -206,7 +212,7 @@ jobs:
           # Remove unnecessary object files (to reduce cache size).
           find llvm-build -name CMakeFiles -prune -exec rm -r '{}' \;
       - name: Cache Binaryen
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: cache-binaryen
         with:
           key: binaryen-linux-asserts-v1
@@ -215,10 +221,10 @@ jobs:
         if: steps.cache-binaryen.outputs.cache-hit != 'true'
         run: make binaryen
       - name: Cache wasi-libc
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: cache-wasi-libc
         with:
-          key: wasi-libc-sysroot-linux-asserts-v4
+          key: wasi-libc-sysroot-linux-asserts-v5
           path: lib/wasi-libc/sysroot
       - name: Build wasi-libc
         if: steps.cache-wasi-libc.outputs.cache-hit != 'true'
@@ -230,6 +236,8 @@ jobs:
         run: |
           make ASSERT=1
           echo "$(pwd)/build" >> $GITHUB_PATH
+      - name: Test machine package
+        run: make check-machine
       - name: Test stdlib packages
         run: make tinygo-test
       - name: Install Xtensa toolchain
@@ -257,23 +265,18 @@ jobs:
         uses: actions/checkout@v2
       - name: Install apt dependencies
         run: |
+          sudo apt-get update
           sudo apt-get install --no-install-recommends \
               qemu-user \
               g++-arm-linux-gnueabihf \
               libc6-dev-armhf-cross
       - name: Install Go
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v3
         with:
-          go-version: '1.18.1'
-      - name: Cache Go
-        uses: actions/cache@v2
-        with:
-          key: go-cache-linux-arm-v2-${{ hashFiles('go.mod') }}
-          path: |
-            ~/.cache/go-build
-            ~/go/pkg/mod
+          go-version: '1.19'
+          cache: true
       - name: Cache LLVM source
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: cache-llvm-source
         with:
           key: llvm-source-14-linux-v2
@@ -287,7 +290,7 @@ jobs:
         if: steps.cache-llvm-source.outputs.cache-hit != 'true'
         run: make llvm-source
       - name: Cache LLVM build
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: cache-llvm-build
         with:
           key: llvm-build-14-linux-arm-v1
@@ -305,7 +308,7 @@ jobs:
           # Remove unnecessary object files (to reduce cache size).
           find llvm-build -name CMakeFiles -prune -exec rm -r '{}' \;
       - name: Cache Binaryen
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: cache-binaryen
         with:
           key: binaryen-linux-arm-v1
@@ -318,6 +321,8 @@ jobs:
           make CROSS=arm-linux-gnueabihf binaryen
       - name: Install fpm
         run: |
+          sudo gem install --version 4.0.7 public_suffix
+          sudo gem install --version 2.7.6 dotenv
           sudo gem install --no-document fpm
       - name: Build TinyGo binary
         run: |
@@ -359,24 +364,19 @@ jobs:
         uses: actions/checkout@v2
       - name: Install apt dependencies
         run: |
+          sudo apt-get update
           sudo apt-get install --no-install-recommends \
               qemu-user \
               g++-aarch64-linux-gnu \
               libc6-dev-arm64-cross \
               ninja-build
       - name: Install Go
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v3
         with:
-          go-version: '1.18.1'
-      - name: Cache Go
-        uses: actions/cache@v2
-        with:
-          key: go-cache-linux-arm64-v2-${{ hashFiles('go.mod') }}
-          path: |
-            ~/.cache/go-build
-            ~/go/pkg/mod
+          go-version: '1.19'
+          cache: true
       - name: Cache LLVM source
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: cache-llvm-source
         with:
           key: llvm-source-14-linux-v1
@@ -390,7 +390,7 @@ jobs:
         if: steps.cache-llvm-source.outputs.cache-hit != 'true'
         run: make llvm-source
       - name: Cache LLVM build
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: cache-llvm-build
         with:
           key: llvm-build-14-linux-arm64-v1
@@ -406,7 +406,7 @@ jobs:
           # Remove unnecessary object files (to reduce cache size).
           find llvm-build -name CMakeFiles -prune -exec rm -r '{}' \;
       - name: Cache Binaryen
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: cache-binaryen
         with:
           key: binaryen-linux-arm64-v1
@@ -418,6 +418,8 @@ jobs:
           make CROSS=aarch64-linux-gnu binaryen
       - name: Install fpm
         run: |
+          sudo gem install --version 4.0.7 public_suffix
+          sudo gem install --version 2.7.6 dotenv
           sudo gem install --no-document fpm
       - name: Build TinyGo binary
         run: |

.github/workflows/windows.yml

@@ -7,14 +7,14 @@ on:
       - dev
       - release
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build-windows:
     runs-on: windows-2022
     steps:
-      - name: Install Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: '1.18.1'
       - uses: brechtm/setup-scoop@v2
         with:
           scoop_update: 'false'
@@ -26,15 +26,13 @@ jobs:
         uses: actions/checkout@v2
         with:
           submodules: true
-      - name: Cache Go
-        uses: actions/cache@v2
+      - name: Install Go
+        uses: actions/setup-go@v3
         with:
-          key: go-cache-windows-v1-${{ hashFiles('go.mod') }}
-          path: |
-            ~/AppData/Local/go-build
-            ~/go/pkg/mod
+          go-version: '1.19'
+          cache: true
       - name: Cache LLVM source
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: cache-llvm-source
         with:
           key: llvm-source-14-windows-v2
@@ -48,10 +46,10 @@ jobs:
         if: steps.cache-llvm-source.outputs.cache-hit != 'true'
         run: make llvm-source
       - name: Cache LLVM build
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: cache-llvm-build
         with:
-          key: llvm-build-14-windows-v1
+          key: llvm-build-14-windows-v2
           path: llvm-build
       - name: Build LLVM
         if: steps.cache-llvm-build.outputs.cache-hit != 'true'
@@ -61,14 +59,14 @@ jobs:
           rm -rf llvm-project
           make llvm-source
           # build!
-          make llvm-build
+          make llvm-build CCACHE=OFF
           # Remove unnecessary object files (to reduce cache size).
           find llvm-build -name CMakeFiles -prune -exec rm -r '{}' \;
       - name: Cache wasi-libc sysroot
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         id: cache-wasi-libc
         with:
-          key: wasi-libc-sysroot-v3
+          key: wasi-libc-sysroot-v4
           path: lib/wasi-libc/sysroot
       - name: Build wasi-libc
         if: steps.cache-wasi-libc.outputs.cache-hit != 'true'
@@ -80,6 +78,7 @@ jobs:
         shell: bash
         run: make test GOTESTFLAGS="-v -short"
       - name: Build TinyGo release tarball
+        shell: bash
         run: make build/release -j4
       - name: Make release artifact
         shell: bash

.gitignore

@@ -23,6 +23,7 @@ llvm-project
 build/*
 
 # Ignore files generated by smoketest
+test
 test.bin
 test.elf
 test.exe
@@ -30,4 +31,4 @@ test.gba
 test.hex
 test.nro
 test.wasm
-wasm.wasm
+wasm.wasm

BUILDING.md

@@ -18,7 +18,7 @@ tarball. If you want to help with development of TinyGo itself, you should follo
 LLVM, Clang and LLD are quite light on dependencies, requiring only standard
 build tools to be built. Go is of course necessary to build TinyGo itself.
 
-  * Go (1.16+)
+  * Go (1.18+)
   * Standard build tools (gcc/clang)
   * git
   * CMake

CHANGELOG.md

@@ -1,3 +1,110 @@
+0.25.0
+---
+
+* **command line**
+  - change to ignore PortReset failures
+* **compiler**
+  - `compiler`: darwin/arm64 is aarch64, not arm
+  - `compiler`: don't clobber X18 and FP registers on darwin/arm64
+  - `compiler`: fix issue with methods on generic structs
+  - `compiler`: do not try to build generic functions
+  - `compiler`: fix type names for generic named structs
+  - `compiler`: fix multiple defined function issue for generic functions
+  - `compiler`: implement `unsafe.Alignof` and `unsafe.Sizeof` for generic code
+* **standard library**
+  - `machine`: add DTR and RTS to Serialer interface
+  - `machine`: reorder pin definitions to improve pin list on tinygo.org
+  - `machine/usb`: add support for MIDI
+  - `machine/usb`: adjust buffer alignment (samd21, samd51, nrf52840)
+  - `machine/usb/midi`: add `NoteOn`, `NoteOff`, and `SendCC` methods
+  - `machine/usb/midi`: add definition of MIDI note number
+  - `runtime`: add benchmarks for memhash
+  - `runtime`: add support for printing slices via print/println
+* **targets**
+  - `avr`: fix some apparent mistake in atmega1280/atmega2560 pin constants
+  - `esp32`: provide hardware pin constants
+  - `esp32`: fix WDT reset on the MCH2022 badge
+  - `esp32`: optimize SPI transmit
+  - `esp32c3`: provide hardware pin constants
+  - `esp8266`: provide hardware pin constants like `GPIO2`
+  - `nrf51`: define and use `P0_xx` constants
+  - `nrf52840`, `samd21`, `samd51`: unify bootloader entry process
+  - `nrf52840`, `samd21`, `samd51`: change usbSetup and sendZlp to public
+  - `nrf52840`, `samd21`, `samd51`: refactor handleStandardSetup and initEndpoint
+  - `nrf52840`, `samd21`, `samd51`: improve usb-device initialization
+  - `nrf52840`, `samd21`, `samd51`: move usbcdc to machine/usb/cdc
+  - `rp2040`: add usb serial vendor/product ID
+  - `rp2040`: add support for usb
+  - `rp2040`: change default for serial to usb
+  - `rp2040`: add support for `machine.EnterBootloader`
+  - `rp2040`: turn off pullup/down when input type is not specified
+  - `rp2040`: make picoprobe default openocd interface
+  - `samd51`: add support for `DAC1`
+  - `samd51`: improve TRNG
+  - `wasm`: stub `runtime.buffered`, `runtime.getchar`
+  - `wasi`: make leveldb runtime hash the default
+* **boards**
+  - add Challenger RP2040 LoRa
+  - add MCH2022 badge
+  - add XIAO RP2040
+  - `clue`: remove pins `D21`..`D28`
+  - `feather-rp2040`, `macropad-rp2040`: fix qspi-flash settings
+  - `xiao-ble`: add support for flash-1200-bps-reset
+  - `gopherbot`, `gopherbot2`: add these aliases to simplify for newer users
+
+
+0.24.0
+---
+
+* **command line**
+  - remove support for go 1.15
+  - remove support for LLVM 11 and LLVM 12
+  - add initial Go 1.19 beta support
+  - `test`: fix package/... syntax
+* **compiler**
+  - add support for the embed package
+  - `builder`: improve error message for "command not found"
+  - `builder`: add support for ThinLTO on MacOS and Windows
+  - `builder`: free LLVM objects after use, to reduce memory leaking
+  - `builder`: improve `-no-debug` error messages
+  - `cgo`: be more strict: CGo now requires every Go file to import the headers it needs
+  - `compiler`: alignof(func) is 1 pointer, not 2
+  - `compiler`: add support for type parameters (aka generics)
+  - `compiler`: implement `recover()` built-in function
+  - `compiler`: support atomic, volatile, and LLVM memcpy-like functions in defer
+  - `compiler`: drop support for macos syscalls via inline assembly
+  - `interp`: do not try to interpret past task.Pause()
+  - `interp`: fix some buggy localValue handling
+  - `interp`: do not unroll loops
+  - `transform`: fix MakeGCStackSlots that caused a possible GC bug on WebAssembly
+* **standard library**
+  - `os`: enable os.Stdin for baremetal target
+  - `reflect`: add `Value.UnsafePointer` method
+  - `runtime`: scan GC globals conservatively on Windows, MacOS, Linux and Nintendo Switch
+  - `runtime`: add per-map hash seeds
+  - `runtime`: handle nil map write panics
+  - `runtime`: add stronger hash functions
+  - `syscall`: implement `Getpagesize`
+* **targets**
+  - `atmega2560`: support UART1-3 + example for uart
+  - `avr`: use compiler-rt for improved float64 support
+  - `avr`: simplify timer-based time
+  - `avr`: fix race condition in stack write
+  - `darwin`: add support for `GOARCH=arm64` (aka Apple Silicon)
+  - `darwin`: support `-size=short` and `-size=full` flag
+  - `rp2040`: replace sleep 'busy loop' with timer alarm
+  - `rp2040`: align api for `PortMaskSet`, `PortMaskClear`
+  - `rp2040`: fix GPIO interrupts
+  - `samd21`, `samd51`, `nrf52840`: add support for USBHID (keyboard / mouse)
+  - `wasm`: update wasi-libc version
+  - `wasm`: use newer WebAssembly features
+* **boards**
+  - add Badger 2040
+  - `matrixportal-m4`: attach USB DP to the correct pin
+  - `teensy40`: add I2C support
+  - `wioterminal`: fix I2C definition
+
+
 0.23.0
 ---
 

Dockerfile

@@ -1,5 +1,5 @@
 # tinygo-llvm stage obtains the llvm source for TinyGo
-FROM golang:1.18 AS tinygo-llvm
+FROM golang:1.19 AS tinygo-llvm
 
 RUN apt-get update && \
     apt-get install -y apt-utils make cmake clang-11 binutils-avr gcc-avr avr-libc ninja-build

Makefile

@@ -38,10 +38,16 @@ MD5SUM = md5sum
 # tinygo binary for tests
 TINYGO ?= $(call detect,tinygo,tinygo $(CURDIR)/build/tinygo)
 
-# Use CCACHE for LLVM if possible
-ifneq (, $(shell command -v ccache 2> /dev/null))
-    LLVM_OPTION += '-DLLVM_CCACHE_BUILD=ON'
+# Check for ccache if the user hasn't set it to on or off.
+ifeq (, $(CCACHE))
+    # Use CCACHE for LLVM if possible
+    ifneq (, $(shell command -v ccache 2> /dev/null))
+        CCACHE := ON
+    else
+        CCACHE := OFF
+    endif
 endif
+LLVM_OPTION += '-DLLVM_CCACHE_BUILD=$(CCACHE)'
 
 # Allow enabling LLVM assertions
 ifeq (1, $(ASSERT))
@@ -50,6 +56,23 @@ else
     LLVM_OPTION += '-DLLVM_ENABLE_ASSERTIONS=OFF'
 endif
 
+ifeq (1, $(STATIC))
+    # Build TinyGo as a fully statically linked binary (no dynamically loaded
+    # libraries such as a libc). This is not supported with glibc which is used
+    # on most major Linux distributions. However, it is supported in Alpine
+    # Linux with musl.
+    CGO_LDFLAGS += -static
+    # Also set the thread stack size to 1MB. This is necessary on musl as the
+    # default stack size is 128kB and LLVM uses more than that.
+    # For more information, see:
+    # https://wiki.musl-libc.org/functional-differences-from-glibc.html#Thread-stack-size
+    CGO_LDFLAGS += -Wl,-z,stack-size=1048576
+    # Build wasm-opt with static linking.
+    # For details, see:
+    # https://github.com/WebAssembly/binaryen/blob/version_102/.github/workflows/ci.yml#L181
+    BINARYEN_OPTION += -DCMAKE_CXX_FLAGS="-static" -DCMAKE_C_FLAGS="-static"
+endif
+
 # Cross compiling support.
 ifneq ($(CROSS),)
     CC = $(CROSS)-gcc
@@ -150,7 +173,7 @@ endif
 clean:
 	@rm -rf build
 
-FMT_PATHS = ./*.go builder cgo compiler interp loader src/device/arm src/examples src/machine src/os src/reflect src/runtime src/sync src/syscall src/testing src/internal/reflectlite transform
+FMT_PATHS = ./*.go builder cgo/*.go compiler interp loader src transform
 fmt:
 	@gofmt -l -w $(FMT_PATHS)
 fmt-check:
@@ -234,15 +257,27 @@ endif
 wasi-libc: lib/wasi-libc/sysroot/lib/wasm32-wasi/libc.a
 lib/wasi-libc/sysroot/lib/wasm32-wasi/libc.a:
 	@if [ ! -e lib/wasi-libc/Makefile ]; then echo "Submodules have not been downloaded. Please download them using:\n  git submodule update --init"; exit 1; fi
-	cd lib/wasi-libc && make -j4 WASM_CFLAGS="-O2 -g -DNDEBUG" MALLOC_IMPL=none WASM_CC=$(CLANG) WASM_AR=$(LLVM_AR) WASM_NM=$(LLVM_NM)
+	cd lib/wasi-libc && make -j4 WASM_CFLAGS="-O2 -g -DNDEBUG -mnontrapping-fptoint -msign-ext" MALLOC_IMPL=none CC=$(CLANG) AR=$(LLVM_AR) NM=$(LLVM_NM)
 
 
 # Build the Go compiler.
 tinygo:
 	@if [ ! -f "$(LLVM_BUILDDIR)/bin/llvm-config" ]; then echo "Fetch and build LLVM first by running:"; echo "  make llvm-source"; echo "  make $(LLVM_BUILDDIR)"; exit 1; fi
-	CGO_CPPFLAGS="$(CGO_CPPFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" CGO_LDFLAGS="$(CGO_LDFLAGS)" $(GOENVFLAGS) $(GO) build -buildmode exe -o build/tinygo$(EXE) -tags byollvm -ldflags="-X github.com/tinygo-org/tinygo/goenv.GitSha1=`git rev-parse --short HEAD`" .
+	CGO_CPPFLAGS="$(CGO_CPPFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" CGO_LDFLAGS="$(CGO_LDFLAGS)" $(GOENVFLAGS) $(GO) build -buildmode exe -o build/tinygo$(EXE) -tags "byollvm osusergo" -ldflags="-X github.com/tinygo-org/tinygo/goenv.GitSha1=`git rev-parse --short HEAD`" .
 test: wasi-libc
-	CGO_CPPFLAGS="$(CGO_CPPFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" CGO_LDFLAGS="$(CGO_LDFLAGS)" $(GO) test $(GOTESTFLAGS) -timeout=20m -buildmode exe -tags byollvm ./builder ./cgo ./compileopts ./compiler ./interp ./transform .
+	CGO_CPPFLAGS="$(CGO_CPPFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" CGO_LDFLAGS="$(CGO_LDFLAGS)" $(GO) test $(GOTESTFLAGS) -timeout=20m -buildmode exe -tags "byollvm osusergo" ./builder ./cgo ./compileopts ./compiler ./interp ./transform .
+
+# Check whether the machine package matches the documentation.
+# TODO: improve `tinygo targets` so it doesn't return these invalid targets.
+CHECK_MACHINE_EXCULDE = \
+	cortex-m-qemu \
+	particle-3rd-gen \
+	riscv-qemu \
+	riscv64-qemu \
+	rp2040 \
+	$(nil)
+check-machine:
+	$(GO) run ./tools/machinecheck $(filter-out $(CHECK_MACHINE_EXCULDE),$(shell $(TINYGO) targets))
 
 # Standard library packages that pass tests on darwin, linux, wasi, and windows, but take over a minute in wasi
 TEST_PACKAGES_SLOW = \
@@ -257,7 +292,6 @@ TEST_PACKAGES_FAST = \
 	container/list \
 	container/ring \
 	crypto/des \
-	crypto/elliptic/internal/fiat \
 	crypto/internal/subtle \
 	crypto/md5 \
 	crypto/rc4 \
@@ -294,29 +328,47 @@ TEST_PACKAGES_FAST = \
 	unicode \
 	unicode/utf16 \
 	unicode/utf8 \
+	$(nil)
+
+# Assume this will go away before Go2, so only check minor version.
+ifeq ($(filter $(shell $(GO) env GOVERSION | cut -f 2 -d.), 16 17 18), )
+TEST_PACKAGES_FAST += crypto/internal/nistec/fiat
+else
+TEST_PACKAGES_FAST += crypto/elliptic/internal/fiat
+endif
 
 # archive/zip requires os.ReadAt, which is not yet supported on windows
+# compress/flate appears to hang on wasi
+# compress/lzw appears to hang on wasi
+# 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
-# io/fs requires os.ReadDir, which is not yet supported on windows or wasi
+# io/ioutil requires os.ReadDir, which is not yet supported on windows or wasi
+# strconv requires recover() which is not yet supported on wasi
+# text/template/parse requires recover(), which is not yet supported on wasi
 # testing/fstest requires os.ReadDir, which is not yet supported on windows or wasi
-# compress/flate fails windows go 1.18, https://github.com/tinygo-org/tinygo/issues/2762
-# compress/lzw fails windows go 1.18 wasi, https://github.com/tinygo-org/tinygo/issues/2762
 
 # Additional standard library packages that pass tests on individual platforms
 TEST_PACKAGES_LINUX := \
 	archive/zip \
 	compress/flate \
 	compress/lzw \
+	crypto/hmac \
 	debug/dwarf \
 	debug/plan9obj \
-	io/fs \
 	io/ioutil \
-	testing/fstest
+	strconv \
+	testing/fstest \
+	text/template/parse
 
 TEST_PACKAGES_DARWIN := $(TEST_PACKAGES_LINUX)
 
 TEST_PACKAGES_WINDOWS := \
-	compress/lzw
+	compress/flate \
+	compress/lzw \
+	crypto/hmac \
+	strconv \
+	text/template/parse \
+	$(nil)
 
 # Report platforms on which each standard library package is known to pass tests
 jointmp := $(shell echo /tmp/join.$$$$)
@@ -331,12 +383,15 @@ report-stdlib-tests-pass:
 # Standard library packages that pass tests quickly on the current platform
 ifeq ($(shell uname),Darwin)
 TEST_PACKAGES_HOST := $(TEST_PACKAGES_FAST) $(TEST_PACKAGES_DARWIN)
+TEST_IOFS := true
 endif
 ifeq ($(shell uname),Linux)
 TEST_PACKAGES_HOST := $(TEST_PACKAGES_FAST) $(TEST_PACKAGES_LINUX)
+TEST_IOFS := true
 endif
 ifeq ($(OS),Windows_NT)
 TEST_PACKAGES_HOST := $(TEST_PACKAGES_FAST) $(TEST_PACKAGES_WINDOWS)
+TEST_IOFS := false
 endif
 
 # Test known-working standard library packages.
@@ -344,6 +399,12 @@ endif
 .PHONY: tinygo-test
 tinygo-test:
 	$(TINYGO) test $(TEST_PACKAGES_HOST) $(TEST_PACKAGES_SLOW)
+	@# io/fs requires os.ReadDir, not yet supported on windows or wasi. It also
+	@# requires a large stack-size. Hence, io/fs is only run conditionally.
+	@# For more details, see the comments on issue #3143.
+ifeq ($(TEST_IOFS),true)
+	$(TINYGO) test -stack-size=6MB io/fs
+endif
 tinygo-test-fast:
 	$(TINYGO) test $(TEST_PACKAGES_HOST)
 tinygo-bench:
@@ -353,9 +414,9 @@ tinygo-bench-fast:
 
 # Same thing, except for wasi rather than the current platform.
 tinygo-test-wasi:
-	$(TINYGO) test -target wasi $(TEST_PACKAGES_FAST) $(TEST_PACKAGES_SLOW)
+	$(TINYGO) test -target wasi $(TEST_PACKAGES_FAST) $(TEST_PACKAGES_SLOW) ./tests/runtime_wasi
 tinygo-test-wasi-fast:
-	$(TINYGO) test -target wasi $(TEST_PACKAGES_FAST)
+	$(TINYGO) test -target wasi $(TEST_PACKAGES_FAST) ./tests/runtime_wasi
 tinygo-bench-wasi:
 	$(TINYGO) test -target wasi -bench . $(TEST_PACKAGES_FAST) $(TEST_PACKAGES_SLOW)
 tinygo-bench-wasi-fast:
@@ -377,6 +438,7 @@ tinygo-baremetal:
 .PHONY: smoketest
 smoketest:
 	$(TINYGO) version
+	$(TINYGO) targets > /dev/null
 	# regression test for #2892
 	cd tests/testing/recurse && ($(TINYGO) test ./... > recurse.log && cat recurse.log && test $$(wc -l < recurse.log) = 2 && rm recurse.log)
 	# compile-only platform-independent examples
@@ -428,14 +490,14 @@ ifneq ($(WASM), 0)
 	@$(MD5SUM) test.wasm
 	$(TINYGO) build -size short -o test.wasm -tags=reelboard            examples/blinky1
 	@$(MD5SUM) test.wasm
-	$(TINYGO) build -size short -o test.wasm -tags=pca10040             examples/blinky2
-	@$(MD5SUM) test.wasm
-	$(TINYGO) build -size short -o test.wasm -tags=pca10056             examples/blinky2
+	$(TINYGO) build -size short -o test.wasm -tags=microbit             examples/microbit-blink
 	@$(MD5SUM) test.wasm
 	$(TINYGO) build -size short -o test.wasm -tags=circuitplay_express  examples/blinky1
 	@$(MD5SUM) test.wasm
 	$(TINYGO) build -size short -o test.wasm -tags=circuitplay_bluefruit examples/blinky1
 	@$(MD5SUM) test.wasm
+	$(TINYGO) build -size short -o test.wasm -tags=mch2022              examples/serial
+	@$(MD5SUM) test.wasm
 endif
 	# test all targets/boards
 	$(TINYGO) build -size short -o test.hex -target=pca10040-s132v6     examples/blinky1
@@ -486,6 +548,8 @@ endif
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=feather-m4          examples/blinky1
 	@$(MD5SUM) test.hex
+	$(TINYGO) build -size short -o test.hex -target=matrixportal-m4     examples/blinky1
+	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=pybadge             examples/blinky1
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=metro-m4-airlift    examples/blinky1
@@ -552,8 +616,22 @@ endif
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=feather-rp2040 		examples/blinky1
 	@$(MD5SUM) test.hex
+	$(TINYGO) build -size short -o test.hex -target=qtpy-rp2040         examples/echo
+	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=macropad-rp2040 	examples/blinky1
 	@$(MD5SUM) test.hex
+	$(TINYGO) build -size short -o test.hex -target=badger2040          examples/blinky1
+	@$(MD5SUM) test.hex
+	$(TINYGO) build -size short -o test.hex -target=tufty2040           examples/blinky1
+	@$(MD5SUM) test.hex
+	$(TINYGO) build -size short -o test.hex -target=thingplus-rp2040    examples/blinky1
+	@$(MD5SUM) test.hex
+	$(TINYGO) build -size short -o test.hex -target=xiao-rp2040         examples/blinky1
+	@$(MD5SUM) test.hex
+	$(TINYGO) build -size short -o test.hex -target=challenger-rp2040    examples/blinky1
+	@$(MD5SUM) test.hex
+	$(TINYGO) build -size short -o test.hex -target=trinkey-qt2040      examples/temp
+	@$(MD5SUM) test.hex
 	# test pwm
 	$(TINYGO) build -size short -o test.hex -target=itsybitsy-m0        examples/pwm
 	@$(MD5SUM) test.hex
@@ -561,11 +639,13 @@ endif
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=feather-m4          examples/pwm
 	@$(MD5SUM) test.hex
-	# test usbhid
+	# test usb
 	$(TINYGO) build -size short -o test.hex -target=feather-nrf52840    examples/hid-keyboard
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=circuitplay-express examples/hid-keyboard
 	@$(MD5SUM) test.hex
+	$(TINYGO) build -size short -o test.hex -target=feather-nrf52840    examples/usb-midi
+	@$(MD5SUM) test.hex
 ifneq ($(STM32), 0)
 	$(TINYGO) build -size short -o test.hex -target=bluepill            examples/blinky1
 	@$(MD5SUM) test.hex
@@ -629,15 +709,19 @@ ifneq ($(XTENSA), 0)
 	@$(MD5SUM) test.bin
 	$(TINYGO) build -size short -o test.bin -target m5stack             examples/serial
 	@$(MD5SUM) test.bin
+	$(TINYGO) build -size short -o test.bin -target mch2022             examples/serial
+	@$(MD5SUM) test.bin
 endif
-	$(TINYGO) build -size short -o test.bin -target=esp32c3           	examples/serial
+	$(TINYGO) build -size short -o test.bin -target=esp32c3             examples/serial
+	@$(MD5SUM) test.bin
+	$(TINYGO) build -size short -o test.bin -target=esp32c3-12f         examples/serial
 	@$(MD5SUM) test.bin
 	$(TINYGO) build -size short -o test.bin -target=m5stamp-c3          examples/serial
 	@$(MD5SUM) test.bin
+	$(TINYGO) build -size short -o test.bin -target=xiao-esp32c3        examples/serial
+	@$(MD5SUM) test.bin
 	$(TINYGO) build -size short -o test.hex -target=hifive1b            examples/blinky1
 	@$(MD5SUM) test.hex
-	$(TINYGO) build -size short -o test.hex -target=hifive1-qemu        examples/serial
-	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=maixbit             examples/blinky1
 	@$(MD5SUM) test.hex
 ifneq ($(WASM), 0)
@@ -710,6 +794,7 @@ endif
 	@cp -rp lib/musl/src/internal        build/release/tinygo/lib/musl/src
 	@cp -rp lib/musl/src/malloc          build/release/tinygo/lib/musl/src
 	@cp -rp lib/musl/src/mman            build/release/tinygo/lib/musl/src
+	@cp -rp lib/musl/src/math            build/release/tinygo/lib/musl/src
 	@cp -rp lib/musl/src/signal          build/release/tinygo/lib/musl/src
 	@cp -rp lib/musl/src/stdio           build/release/tinygo/lib/musl/src
 	@cp -rp lib/musl/src/string          build/release/tinygo/lib/musl/src
@@ -728,6 +813,7 @@ endif
 	@cp -rp lib/picolibc/newlib/libc/string      build/release/tinygo/lib/picolibc/newlib/libc
 	@cp -rp lib/picolibc/newlib/libc/tinystdio   build/release/tinygo/lib/picolibc/newlib/libc
 	@cp -rp lib/picolibc/newlib/libm/common      build/release/tinygo/lib/picolibc/newlib/libm
+	@cp -rp lib/picolibc/newlib/libm/math        build/release/tinygo/lib/picolibc/newlib/libm
 	@cp -rp lib/picolibc-stdio.c         build/release/tinygo/lib
 	@cp -rp lib/wasi-libc/sysroot        build/release/tinygo/lib/wasi-libc/sysroot
 	@cp -rp llvm-project/compiler-rt/lib/builtins build/release/tinygo/lib/compiler-rt-builtins

README.md

@@ -43,7 +43,7 @@ See the [getting started instructions](https://tinygo.org/getting-started/) for
 
 You can compile TinyGo programs for microcontrollers, WebAssembly and Linux.
 
-The following 85 microcontroller boards are currently supported:
+The following 91 microcontroller boards are currently supported:
 
 * [Adafruit Circuit Playground Bluefruit](https://www.adafruit.com/product/4333)
 * [Adafruit Circuit Playground Express](https://www.adafruit.com/product/3333)
@@ -66,7 +66,9 @@ The following 85 microcontroller boards are currently supported:
 * [Adafruit PyGamer](https://www.adafruit.com/product/4242)
 * [Adafruit PyPortal](https://www.adafruit.com/product/4116)
 * [Adafruit QT Py](https://www.adafruit.com/product/4600)
+* [Adafruit QT Py RP2040](https://www.adafruit.com/product/4900)
 * [Adafruit Trinket M0](https://www.adafruit.com/product/3500)
+* [Adafruit Trinkey QT2040](https://adafruit.com/product/5056)
 * [Arduino Mega 1280](https://www.arduino.cc/en/Main/arduinoBoardMega/)
 * [Arduino Mega 2560](https://store.arduino.cc/arduino-mega-2560-rev3)
 * [Arduino MKR1000](https://store.arduino.cc/arduino-mkr1000-wifi)
@@ -89,11 +91,13 @@ The following 85 microcontroller boards are currently supported:
 * [ESP8266 - d1mini](https://www.espressif.com/en/products/socs/esp8266)
 * [ESP8266 - NodeMCU](https://www.espressif.com/en/products/socs/esp8266)
 * [Game Boy Advance](https://en.wikipedia.org/wiki/Game_Boy_Advance)
+* [iLabs Challenger RP2040 LoRa](https://ilabs.se/product/challenger-rp2040-lora/)
 * [M5Stack](https://docs.m5stack.com/en/core/basic)
 * [M5Stack Core2](https://shop.m5stack.com/products/m5stack-core2-esp32-iot-development-kit)
 * [M5Stamp C3](https://docs.m5stack.com/en/core/stamp_c3)
 * [Makerdiary nRF52840-MDK](https://wiki.makerdiary.com/nrf52840-mdk/)
 * [Makerdiary nRF52840-MDK USB Dongle](https://wiki.makerdiary.com/nrf52840-mdk-usb-dongle/)
+* [MCH2022 badge](https://badge.team/docs/badges/mch2022/)
 * [Microchip SAM E54 Xplained Pro](https://www.microchip.com/developmenttools/productdetails/atsame54-xpro)
 * [nice!nano](https://docs.nicekeyboards.com/#/nice!nano/)
 * [Nintendo Switch](https://www.nintendo.com/switch/)
@@ -105,6 +109,8 @@ The following 85 microcontroller boards are currently supported:
 * [Particle Boron](https://docs.particle.io/datasheets/cellular/boron-datasheet/)
 * [Particle Xenon](https://docs.particle.io/datasheets/discontinued/xenon-datasheet/)
 * [Phytec reel board](https://www.phytec.eu/product-eu/internet-of-things/reelboard/)
+* [Pimoroni Badger2040](https://shop.pimoroni.com/products/badger-2040)
+* [Pimoroni Tufty2040](https://shop.pimoroni.com/products/tufty-2040)
 * [PineTime DevKit](https://www.pine64.org/pinetime/)
 * [PJRC Teensy 3.6](https://www.pjrc.com/store/teensy36.html)
 * [PJRC Teensy 4.0](https://www.pjrc.com/store/teensy40.html)
@@ -114,10 +120,12 @@ The following 85 microcontroller boards are currently supported:
 * [Raytac MDBT50Q-RX Dongle (with TinyUF2 bootloader)](https://www.adafruit.com/product/5199)
 * [Seeed Seeeduino XIAO](https://www.seeedstudio.com/Seeeduino-XIAO-Arduino-Microcontroller-SAMD21-Cortex-M0+-p-4426.html)
 * [Seeed XIAO BLE](https://www.seeedstudio.com/Seeed-XIAO-BLE-nRF52840-p-5201.html)
+* [Seeed XIAO ESP32C3](https://www.seeedstudio.com/Seeed-XIAO-ESP32C3-p-5431.html)
+* [Seeed XIAO RP2040](https://www.seeedstudio.com/XIAO-RP2040-v1-0-p-5026.html)
 * [Seeed LoRa-E5 Development Kit](https://www.seeedstudio.com/LoRa-E5-Dev-Kit-p-4868.html)
 * [Seeed Sipeed MAix BiT](https://www.seeedstudio.com/Sipeed-MAix-BiT-for-RISC-V-AI-IoT-p-2872.html)
 * [Seeed Wio Terminal](https://www.seeedstudio.com/Wio-Terminal-p-4509.html)
-* [SiFIve HiFive1 Rev B](https://www.sifive.com/boards/hifive1)
+* [SiFIve HiFive1 Rev B](https://www.sifive.com/boards/hifive1-rev-b)
 * [Sparkfun Thing Plus RP2040](https://www.sparkfun.com/products/17745)
 * [ST Micro "Nucleo" F103RB](https://www.st.com/en/evaluation-tools/nucleo-f103rb.html)
 * [ST Micro "Nucleo" F722ZE](https://www.st.com/en/evaluation-tools/nucleo-f722ze.html)

builder/ar.go

@@ -18,7 +18,7 @@ import (
 // makeArchive creates an arcive for static linking from a list of object files
 // given as a parameter. It is equivalent to the following command:
 //
-//     ar -rcs <archivePath> <objs...>
+//	ar -rcs <archivePath> <objs...>
 func makeArchive(arfile *os.File, objs []string) error {
 	// Open the archive file.
 	arwriter := ar.NewWriter(arfile)

builder/build.go

@@ -14,7 +14,7 @@ import (
 	"fmt"
 	"go/types"
 	"hash/crc32"
-	"io/ioutil"
+	"io/fs"
 	"math/bits"
 	"os"
 	"os/exec"
@@ -103,7 +103,7 @@ func Build(pkgName, outpath string, config *compileopts.Config, action func(Buil
 	}
 
 	// Create a temporary directory for intermediary files.
-	dir, err := ioutil.TempDir("", "tinygo")
+	dir, err := os.MkdirTemp("", "tinygo")
 	if err != nil {
 		return err
 	}
@@ -148,7 +148,7 @@ func Build(pkgName, outpath string, config *compileopts.Config, action func(Buil
 		libcDependencies = append(libcDependencies, libcJob)
 	case "wasi-libc":
 		path := filepath.Join(root, "lib/wasi-libc/sysroot/lib/wasm32-wasi/libc.a")
-		if _, err := os.Stat(path); os.IsNotExist(err) {
+		if _, err := os.Stat(path); errors.Is(err, fs.ErrNotExist) {
 			return errors.New("could not find wasi-libc, perhaps you need to run `make wasi-libc`?")
 		}
 		libcDependencies = append(libcDependencies, dummyCompileJob(path))
@@ -178,7 +178,7 @@ func Build(pkgName, outpath string, config *compileopts.Config, action func(Buil
 
 		Scheduler:          config.Scheduler(),
 		AutomaticStackSize: config.AutomaticStackSize(),
-		DefaultStackSize:   config.Target.DefaultStackSize,
+		DefaultStackSize:   config.StackSize(),
 		NeedsStackObjects:  config.NeedsStackObjects(),
 		Debug:              true,
 	}
@@ -370,7 +370,7 @@ func Build(pkgName, outpath string, config *compileopts.Config, action func(Buil
 				// Packages are compiled independently anyway.
 				for _, cgoHeader := range pkg.CGoHeaders {
 					// Store the header text in a temporary file.
-					f, err := ioutil.TempFile(dir, "cgosnippet-*.c")
+					f, err := os.CreateTemp(dir, "cgosnippet-*.c")
 					if err != nil {
 						return err
 					}
@@ -431,7 +431,7 @@ func Build(pkgName, outpath string, config *compileopts.Config, action func(Buil
 				if pkgInit.IsNil() {
 					panic("init not found for " + pkg.Pkg.Path())
 				}
-				err := interp.RunFunc(pkgInit, config.DumpSSA())
+				err := interp.RunFunc(pkgInit, config.Options.InterpTimeout, config.DumpSSA())
 				if err != nil {
 					return err
 				}
@@ -445,7 +445,7 @@ func Build(pkgName, outpath string, config *compileopts.Config, action func(Buil
 				// Write to a temporary path that is renamed to the destination
 				// file to avoid race conditions with other TinyGo invocatiosn
 				// that might also be compiling this package at the same time.
-				f, err := ioutil.TempFile(filepath.Dir(job.result), filepath.Base(job.result))
+				f, err := os.CreateTemp(filepath.Dir(job.result), filepath.Base(job.result))
 				if err != nil {
 					return err
 				}
@@ -589,7 +589,7 @@ func Build(pkgName, outpath string, config *compileopts.Config, action func(Buil
 				return err
 			}
 			defer llvmBuf.Dispose()
-			return ioutil.WriteFile(outpath, llvmBuf.Bytes(), 0666)
+			return os.WriteFile(outpath, llvmBuf.Bytes(), 0666)
 		case ".bc":
 			var buf llvm.MemoryBuffer
 			if config.UseThinLTO() {
@@ -598,10 +598,10 @@ func Build(pkgName, outpath string, config *compileopts.Config, action func(Buil
 				buf = llvm.WriteBitcodeToMemoryBuffer(mod)
 			}
 			defer buf.Dispose()
-			return ioutil.WriteFile(outpath, buf.Bytes(), 0666)
+			return os.WriteFile(outpath, buf.Bytes(), 0666)
 		case ".ll":
 			data := []byte(mod.String())
-			return ioutil.WriteFile(outpath, data, 0666)
+			return os.WriteFile(outpath, data, 0666)
 		default:
 			panic("unreachable")
 		}
@@ -629,7 +629,7 @@ func Build(pkgName, outpath string, config *compileopts.Config, action func(Buil
 				}
 			}
 			defer llvmBuf.Dispose()
-			return ioutil.WriteFile(objfile, llvmBuf.Bytes(), 0666)
+			return os.WriteFile(objfile, llvmBuf.Bytes(), 0666)
 		},
 	}
 
@@ -1055,7 +1055,7 @@ 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.DumpSSA())
+	err := interp.Run(mod, config.Options.InterpTimeout, config.DumpSSA())
 	if err != nil {
 		return err
 	}
@@ -1367,10 +1367,10 @@ func modifyStackSizes(executable string, stackSizeLoads []string, stackSizes map
 //
 // It might print something like the following:
 //
-//     function                         stack usage (in bytes)
-//     Reset_Handler                    316
-//     examples/blinky2.led1            92
-//     runtime.run$1                    300
+//	function                         stack usage (in bytes)
+//	Reset_Handler                    316
+//	examples/blinky2.led1            92
+//	runtime.run$1                    300
 func printStacks(calculatedStacks []string, stackSizes map[string]functionStackSize) {
 	// Print the sizes of all stacks.
 	fmt.Printf("%-32s %s\n", "function", "stack usage (in bytes)")

builder/builder_test.go

@@ -2,7 +2,6 @@ package builder
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"runtime"
@@ -90,7 +89,7 @@ func testClangAttributes(t *testing.T, options *compileopts.Options) {
 
 	// Create a very simple C input file.
 	srcpath := filepath.Join(testDir, "test.c")
-	err = ioutil.WriteFile(srcpath, []byte("int add(int a, int b) { return a + b; }"), 0o666)
+	err = os.WriteFile(srcpath, []byte("int add(int a, int b) { return a + b; }"), 0o666)
 	if err != nil {
 		t.Fatalf("could not write target file %s: %s", srcpath, err)
 	}

builder/buildid.go

@@ -24,7 +24,7 @@ func ReadBuildID() ([]byte, error) {
 	defer f.Close()
 
 	switch runtime.GOOS {
-	case "linux", "freebsd":
+	case "linux", "freebsd", "android":
 		// Read the GNU build id section. (Not sure about FreeBSD though...)
 		file, err := elf.NewFile(f)
 		if err != nil {

builder/cc.go

@@ -10,7 +10,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
+	"io/fs"
 	"os"
 	"path/filepath"
 	"sort"
@@ -33,29 +33,29 @@ import (
 // Because of this complexity, every file has in fact two cached build outputs:
 // the file itself, and the list of dependencies. Its operation is as follows:
 //
-//   depfile = hash(path, compiler, cflags, ...)
-//   if depfile exists:
-//     outfile = hash of all files and depfile name
-//     if outfile exists:
-//       # cache hit
-//       return outfile
-//   # cache miss
-//   tmpfile = compile file
-//   read dependencies (side effect of compile)
-//   write depfile
-//   outfile = hash of all files and depfile name
-//   rename tmpfile to outfile
+//	depfile = hash(path, compiler, cflags, ...)
+//	if depfile exists:
+//	  outfile = hash of all files and depfile name
+//	  if outfile exists:
+//	    # cache hit
+//	    return outfile
+//	# cache miss
+//	tmpfile = compile file
+//	read dependencies (side effect of compile)
+//	write depfile
+//	outfile = hash of all files and depfile name
+//	rename tmpfile to outfile
 //
 // There are a few edge cases that are not handled:
-// - If a file is added to an include path, that file may be included instead of
-//   some other file. This would be fixed by also including lookup failures in the
-//   dependencies file, but I'm not aware of a compiler which does that.
-// - The Makefile syntax that compilers output has issues, see readDepFile for
-//   details.
-// - A header file may be changed to add/remove an include. This invalidates the
-//   depfile but without invalidating its name. For this reason, the depfile is
-//   written on each new compilation (even when it seems unnecessary). However, it
-//   could in rare cases lead to a stale file fetched from the cache.
+//   - If a file is added to an include path, that file may be included instead of
+//     some other file. This would be fixed by also including lookup failures in the
+//     dependencies file, but I'm not aware of a compiler which does that.
+//   - The Makefile syntax that compilers output has issues, see readDepFile for
+//     details.
+//   - A header file may be changed to add/remove an include. This invalidates the
+//     depfile but without invalidating its name. For this reason, the depfile is
+//     written on each new compilation (even when it seems unnecessary). However, it
+//     could in rare cases lead to a stale file fetched from the cache.
 func compileAndCacheCFile(abspath, tmpdir string, cflags []string, thinlto bool, printCommands func(string, ...string)) (string, error) {
 	// Hash input file.
 	fileHash, err := hashFile(abspath)
@@ -93,7 +93,7 @@ func compileAndCacheCFile(abspath, tmpdir string, cflags []string, thinlto bool,
 	// Load dependencies file, if possible.
 	depfileName := "dep-" + depfileNameHash + ".json"
 	depfileCachePath := filepath.Join(goenv.Get("GOCACHE"), depfileName)
-	depfileBuf, err := ioutil.ReadFile(depfileCachePath)
+	depfileBuf, err := os.ReadFile(depfileCachePath)
 	var dependencies []string // sorted list of dependency paths
 	if err == nil {
 		// There is a dependency file, that's great!
@@ -108,21 +108,21 @@ func compileAndCacheCFile(abspath, tmpdir string, cflags []string, thinlto bool,
 		if err == nil {
 			if _, err := os.Stat(outpath); err == nil {
 				return outpath, nil
-			} else if !os.IsNotExist(err) {
+			} else if !errors.Is(err, fs.ErrNotExist) {
 				return "", err
 			}
 		}
-	} else if !os.IsNotExist(err) {
+	} else if !errors.Is(err, fs.ErrNotExist) {
 		// expected either nil or IsNotExist
 		return "", err
 	}
 
-	objTmpFile, err := ioutil.TempFile(goenv.Get("GOCACHE"), "tmp-*"+ext)
+	objTmpFile, err := os.CreateTemp(goenv.Get("GOCACHE"), "tmp-*"+ext)
 	if err != nil {
 		return "", err
 	}
 	objTmpFile.Close()
-	depTmpFile, err := ioutil.TempFile(tmpdir, "dep-*.d")
+	depTmpFile, err := os.CreateTemp(tmpdir, "dep-*.d")
 	if err != nil {
 		return "", err
 	}
@@ -166,7 +166,7 @@ func compileAndCacheCFile(abspath, tmpdir string, cflags []string, thinlto bool,
 	sort.Strings(dependencySlice)
 
 	// Write dependencies file.
-	f, err := ioutil.TempFile(filepath.Dir(depfileCachePath), depfileName)
+	f, err := os.CreateTemp(filepath.Dir(depfileCachePath), depfileName)
 	if err != nil {
 		return "", err
 	}
@@ -252,13 +252,14 @@ func hashFile(path string) (string, error) {
 // file is assumed to have a single target named deps.
 //
 // There are roughly three make syntax variants:
-// - BSD make, which doesn't support any escaping. This means that many special
-//   characters are not supported in file names.
-// - GNU make, which supports escaping using a backslash but when it fails to
-//   find a file it tries to fall back with the literal path name (to match BSD
-//   make).
-// - NMake (Visual Studio) and Jom, which simply quote the string if there are
-//   any weird characters.
+//   - BSD make, which doesn't support any escaping. This means that many special
+//     characters are not supported in file names.
+//   - GNU make, which supports escaping using a backslash but when it fails to
+//     find a file it tries to fall back with the literal path name (to match BSD
+//     make).
+//   - NMake (Visual Studio) and Jom, which simply quote the string if there are
+//     any weird characters.
+//
 // Clang supports two variants: a format that's a compromise between BSD and GNU
 // make (and is buggy to match GCC which is equally buggy), and NMake/Jom, which
 // is at least somewhat sane. This last format isn't perfect either: it does not
@@ -266,7 +267,7 @@ func hashFile(path string) (string, error) {
 // allowed on Windows, but of course can be used on POSIX like systems. Still,
 // it's the most sane of any of the formats so readDepFile will use that format.
 func readDepFile(filename string) ([]string, error) {
-	buf, err := ioutil.ReadFile(filename)
+	buf, err := os.ReadFile(filename)
 	if err != nil {
 		return nil, err
 	}

builder/config.go

@@ -33,8 +33,8 @@ func NewConfig(options *compileopts.Options) (*compileopts.Config, error) {
 	if err != nil {
 		return nil, fmt.Errorf("could not read version from GOROOT (%v): %v", goroot, err)
 	}
-	if major != 1 || minor < 16 || minor > 18 {
-		return nil, fmt.Errorf("requires go version 1.16 through 1.18, got go%d.%d", major, minor)
+	if major != 1 || minor < 18 || minor > 19 {
+		return nil, fmt.Errorf("requires go version 1.18 through 1.19, got go%d.%d", major, minor)
 	}
 
 	clangHeaderPath := getClangHeaderPath(goenv.Get("TINYGOROOT"))

builder/env.go

@@ -1,6 +1,8 @@
 package builder
 
 import (
+	"errors"
+	"io/fs"
 	"io/ioutil"
 	"os"
 	"os/exec"
@@ -17,13 +19,13 @@ import (
 func getClangHeaderPath(TINYGOROOT string) string {
 	// Check whether we're running from the source directory.
 	path := filepath.Join(TINYGOROOT, "llvm-project", "clang", "lib", "Headers")
-	if _, err := os.Stat(path); !os.IsNotExist(err) {
+	if _, err := os.Stat(path); !errors.Is(err, fs.ErrNotExist) {
 		return path
 	}
 
 	// Check whether we're running from the installation directory.
 	path = filepath.Join(TINYGOROOT, "lib", "clang", "include")
-	if _, err := os.Stat(path); !os.IsNotExist(err) {
+	if _, err := os.Stat(path); !errors.Is(err, fs.ErrNotExist) {
 		return path
 	}
 

builder/esp.go

@@ -13,7 +13,7 @@ import (
 	"debug/elf"
 	"encoding/binary"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"sort"
 	"strings"
 )
@@ -189,5 +189,5 @@ func makeESPFirmareImage(infile, outfile, format string) error {
 	}
 
 	// Write the image to the output file.
-	return ioutil.WriteFile(outfile, outf.Bytes(), 0666)
+	return os.WriteFile(outfile, outf.Bytes(), 0666)
 }

builder/library.go

@@ -1,7 +1,8 @@
 package builder
 
 import (
-	"io/ioutil"
+	"errors"
+	"io/fs"
 	"os"
 	"path/filepath"
 	"runtime"
@@ -94,7 +95,7 @@ func (l *Library) load(config *compileopts.Config, tmpdir string) (job *compileJ
 	target := config.Triple()
 	if l.makeHeaders != nil {
 		if _, err = os.Stat(headerPath); err != nil {
-			temporaryHeaderPath, err := ioutil.TempDir(outdir, "include.tmp*")
+			temporaryHeaderPath, err := os.MkdirTemp(outdir, "include.tmp*")
 			if err != nil {
 				return nil, nil, err
 			}
@@ -110,10 +111,10 @@ func (l *Library) load(config *compileopts.Config, tmpdir string) (job *compileJ
 			err = os.Rename(temporaryHeaderPath, headerPath)
 			if err != nil {
 				switch {
-				case os.IsExist(err):
+				case errors.Is(err, fs.ErrExist):
 					// Another invocation of TinyGo also seems to have already created the headers.
 
-				case runtime.GOOS == "windows" && os.IsPermission(err):
+				case runtime.GOOS == "windows" && errors.Is(err, fs.ErrPermission):
 					// On Windows, a rename with a destination directory that already
 					// exists does not result in an IsExist error, but rather in an
 					// access denied error. To be sure, check for this case by checking
@@ -155,7 +156,11 @@ func (l *Library) load(config *compileopts.Config, tmpdir string) (job *compileJ
 		}
 	}
 	if strings.HasPrefix(target, "arm") || strings.HasPrefix(target, "thumb") {
-		args = append(args, "-fshort-enums", "-fomit-frame-pointer", "-mfloat-abi=soft", "-fno-unwind-tables", "-fno-asynchronous-unwind-tables")
+		if strings.Split(target, "-")[2] == "linux" {
+			args = append(args, "-fno-unwind-tables", "-fno-asynchronous-unwind-tables")
+		} else {
+			args = append(args, "-fshort-enums", "-fomit-frame-pointer", "-mfloat-abi=soft", "-fno-unwind-tables", "-fno-asynchronous-unwind-tables")
+		}
 	}
 	if strings.HasPrefix(target, "avr") {
 		// AVR defaults to C float and double both being 32-bit. This deviates
@@ -189,7 +194,7 @@ func (l *Library) load(config *compileopts.Config, tmpdir string) (job *compileJ
 			defer once.Do(unlock)
 
 			// Create an archive of all object files.
-			f, err := ioutil.TempFile(outdir, "libc.a.tmp*")
+			f, err := os.CreateTemp(outdir, "libc.a.tmp*")
 			if err != nil {
 				return err
 			}
@@ -250,7 +255,7 @@ func (l *Library) load(config *compileopts.Config, tmpdir string) (job *compileJ
 			run: func(*compileJob) error {
 				var compileArgs []string
 				compileArgs = append(compileArgs, args...)
-				tmpfile, err := ioutil.TempFile(outdir, "crt1.o.tmp*")
+				tmpfile, err := os.CreateTemp(outdir, "crt1.o.tmp*")
 				if err != nil {
 					return err
 				}

builder/mingw-w64.go

@@ -78,7 +78,7 @@ func makeMinGWExtraLibs(tmpdir string) []*compileJob {
 					// .in files need to be preprocessed by a preprocessor (-E)
 					// first.
 					defpath = outpath + ".def"
-					err := runCCompiler("-E", "-x", "c", "-Wp,-w", "-P", "-DDEF_X64", "-o", defpath, inpath, "-I"+goenv.Get("TINYGOROOT")+"/lib/mingw-w64/mingw-w64-crt/def-include/")
+					err := runCCompiler("-E", "-x", "c", "-Wp,-w", "-P", "-DDEF_X64", "-DDATA", "-o", defpath, inpath, "-I"+goenv.Get("TINYGOROOT")+"/lib/mingw-w64/mingw-w64-crt/def-include/")
 					if err != nil {
 						return err
 					}

builder/musl.go

@@ -3,7 +3,6 @@ package builder
 import (
 	"bytes"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"regexp"
@@ -35,7 +34,7 @@ var Musl = Library{
 			filepath.Join(muslDir, "include", "alltypes.h.in"),
 		}
 		for _, infile := range infiles {
-			data, err := ioutil.ReadFile(infile)
+			data, err := os.ReadFile(infile)
 			if err != nil {
 				return err
 			}
@@ -63,7 +62,7 @@ var Musl = Library{
 		if err != nil {
 			return err
 		}
-		data, err := ioutil.ReadFile(filepath.Join(muslDir, "arch", arch, "bits", "syscall.h.in"))
+		data, err := os.ReadFile(filepath.Join(muslDir, "arch", arch, "bits", "syscall.h.in"))
 		if err != nil {
 			return err
 		}
@@ -90,6 +89,7 @@ var Musl = Library{
 			"-Wno-shift-op-parentheses",
 			"-Wno-ignored-attributes",
 			"-Wno-string-plus-int",
+			"-Wno-ignored-pragmas",
 			"-Qunused-arguments",
 			// Select include dirs. Don't include standard library includes
 			// (that would introduce host dependencies and other complications),
@@ -118,6 +118,7 @@ var Musl = Library{
 			"legacy/*.c",
 			"malloc/*.c",
 			"mman/*.c",
+			"math/*.c",
 			"signal/*.c",
 			"stdio/*.c",
 			"string/*.c",

builder/nrfutil.go

@@ -2,7 +2,7 @@ package builder
 
 import (
 	"fmt"
-	"io/ioutil"
+	"io"
 	"os/exec"
 
 	"github.com/tinygo-org/tinygo/compileopts"
@@ -18,7 +18,7 @@ func makeDFUFirmwareImage(options *compileopts.Options, infile, outfile string)
 	}
 
 	cmd := exec.Command(cmdLine[0], cmdLine[1:]...)
-	cmd.Stdout = ioutil.Discard
+	cmd.Stdout = io.Discard
 	err := cmd.Run()
 	if err != nil {
 		return fmt.Errorf("could not run nrfutil pkg generate: %w", err)

builder/objcopy.go

@@ -2,7 +2,7 @@ package builder
 
 import (
 	"debug/elf"
-	"io/ioutil"
+	"io"
 	"os"
 	"sort"
 
@@ -87,7 +87,7 @@ func extractROM(path string) (uint64, []byte, error) {
 			// Pad the difference
 			rom = append(rom, make([]byte, diff)...)
 		}
-		data, err := ioutil.ReadAll(prog.Open())
+		data, err := io.ReadAll(prog.Open())
 		if err != nil {
 			return 0, nil, objcopyError{"failed to extract segment from ELF file: " + path, err}
 		}

builder/picolibc.go

@@ -19,7 +19,7 @@ var Picolibc = Library{
 		return f.Close()
 	},
 	cflags: func(target, headerPath string) []string {
-		picolibcDir := filepath.Join(goenv.Get("TINYGOROOT"), "lib/picolibc/newlib/libc")
+		newlibDir := filepath.Join(goenv.Get("TINYGOROOT"), "lib/picolibc/newlib")
 		return []string{
 			"-Werror",
 			"-Wall",
@@ -27,219 +27,395 @@ var Picolibc = Library{
 			"-D_COMPILING_NEWLIB",
 			"-DHAVE_ALIAS_ATTRIBUTE",
 			"-DTINY_STDIO",
+			"-D_IEEE_LIBM",
+			"-D__OBSOLETE_MATH_FLOAT=1", // use old math code that doesn't expect a FPU
+			"-D__OBSOLETE_MATH_DOUBLE=0",
 			"-nostdlibinc",
-			"-isystem", picolibcDir + "/include",
-			"-I" + picolibcDir + "/tinystdio",
+			"-isystem", newlibDir + "/libc/include",
+			"-I" + newlibDir + "/libc/tinystdio",
+			"-I" + newlibDir + "/libm/common",
 			"-I" + headerPath,
 		}
 	},
-	sourceDir: func() string { return filepath.Join(goenv.Get("TINYGOROOT"), "lib/picolibc/newlib/libc") },
+	sourceDir: func() string { return filepath.Join(goenv.Get("TINYGOROOT"), "lib/picolibc/newlib") },
 	librarySources: func(target string) []string {
 		return picolibcSources
 	},
 }
 
 var picolibcSources = []string{
-	"../../../picolibc-stdio.c",
+	"../../picolibc-stdio.c",
 
-	"tinystdio/asprintf.c",
-	"tinystdio/atod_engine.c",
-	"tinystdio/atod_ryu.c",
-	"tinystdio/atof_engine.c",
-	"tinystdio/atof_ryu.c",
-	//"tinystdio/atold_engine.c", // have_long_double and not long_double_equals_double
-	"tinystdio/clearerr.c",
-	"tinystdio/compare_exchange.c",
-	"tinystdio/dtoa_data.c",
-	"tinystdio/dtoa_engine.c",
-	"tinystdio/dtoa_ryu.c",
-	"tinystdio/ecvtbuf.c",
-	"tinystdio/ecvt.c",
-	"tinystdio/ecvt_data.c",
-	"tinystdio/ecvtfbuf.c",
-	"tinystdio/ecvtf.c",
-	"tinystdio/ecvtf_data.c",
-	"tinystdio/exchange.c",
-	//"tinystdio/fclose.c", // posix-io
-	"tinystdio/fcvtbuf.c",
-	"tinystdio/fcvt.c",
-	"tinystdio/fcvtfbuf.c",
-	"tinystdio/fcvtf.c",
-	"tinystdio/fdevopen.c",
-	//"tinystdio/fdopen.c", // posix-io
-	"tinystdio/feof.c",
-	"tinystdio/ferror.c",
-	"tinystdio/fflush.c",
-	"tinystdio/fgetc.c",
-	"tinystdio/fgets.c",
-	"tinystdio/fileno.c",
-	"tinystdio/filestrget.c",
-	"tinystdio/filestrputalloc.c",
-	"tinystdio/filestrput.c",
-	//"tinystdio/fopen.c", // posix-io
-	"tinystdio/fprintf.c",
-	"tinystdio/fputc.c",
-	"tinystdio/fputs.c",
-	"tinystdio/fread.c",
-	"tinystdio/fscanf.c",
-	"tinystdio/fseek.c",
-	"tinystdio/ftell.c",
-	"tinystdio/ftoa_data.c",
-	"tinystdio/ftoa_engine.c",
-	"tinystdio/ftoa_ryu.c",
-	"tinystdio/fwrite.c",
-	"tinystdio/gcvtbuf.c",
-	"tinystdio/gcvt.c",
-	"tinystdio/gcvtfbuf.c",
-	"tinystdio/gcvtf.c",
-	"tinystdio/getchar.c",
-	"tinystdio/gets.c",
-	"tinystdio/matchcaseprefix.c",
-	"tinystdio/perror.c",
-	//"tinystdio/posixiob.c", // posix-io
-	//"tinystdio/posixio.c", // posix-io
-	"tinystdio/printf.c",
-	"tinystdio/putchar.c",
-	"tinystdio/puts.c",
-	"tinystdio/ryu_divpow2.c",
-	"tinystdio/ryu_log10.c",
-	"tinystdio/ryu_log2pow5.c",
-	"tinystdio/ryu_pow5bits.c",
-	"tinystdio/ryu_table.c",
-	"tinystdio/ryu_umul128.c",
-	"tinystdio/scanf.c",
-	"tinystdio/setbuf.c",
-	"tinystdio/setvbuf.c",
-	//"tinystdio/sflags.c", // posix-io
-	"tinystdio/snprintf.c",
-	"tinystdio/snprintfd.c",
-	"tinystdio/snprintff.c",
-	"tinystdio/sprintf.c",
-	"tinystdio/sprintfd.c",
-	"tinystdio/sprintff.c",
-	"tinystdio/sscanf.c",
-	"tinystdio/strfromd.c",
-	"tinystdio/strfromf.c",
-	"tinystdio/strtod.c",
-	"tinystdio/strtod_l.c",
-	"tinystdio/strtof.c",
-	//"tinystdio/strtold.c",   // have_long_double and not long_double_equals_double
-	//"tinystdio/strtold_l.c", // have_long_double and not long_double_equals_double
-	"tinystdio/ungetc.c",
-	"tinystdio/vasprintf.c",
-	"tinystdio/vfiprintf.c",
-	"tinystdio/vfiscanf.c",
-	"tinystdio/vfprintf.c",
-	"tinystdio/vfprintff.c",
-	"tinystdio/vfscanf.c",
-	"tinystdio/vfscanff.c",
-	"tinystdio/vprintf.c",
-	"tinystdio/vscanf.c",
-	"tinystdio/vsnprintf.c",
-	"tinystdio/vsprintf.c",
-	"tinystdio/vsscanf.c",
+	"libc/tinystdio/asprintf.c",
+	"libc/tinystdio/atod_engine.c",
+	"libc/tinystdio/atod_ryu.c",
+	"libc/tinystdio/atof_engine.c",
+	"libc/tinystdio/atof_ryu.c",
+	//"libc/tinystdio/atold_engine.c", // have_long_double and not long_double_equals_double
+	"libc/tinystdio/clearerr.c",
+	"libc/tinystdio/compare_exchange.c",
+	"libc/tinystdio/dtoa_data.c",
+	"libc/tinystdio/dtoa_engine.c",
+	"libc/tinystdio/dtoa_ryu.c",
+	"libc/tinystdio/ecvtbuf.c",
+	"libc/tinystdio/ecvt.c",
+	"libc/tinystdio/ecvt_data.c",
+	"libc/tinystdio/ecvtfbuf.c",
+	"libc/tinystdio/ecvtf.c",
+	"libc/tinystdio/ecvtf_data.c",
+	"libc/tinystdio/exchange.c",
+	//"libc/tinystdio/fclose.c", // posix-io
+	"libc/tinystdio/fcvtbuf.c",
+	"libc/tinystdio/fcvt.c",
+	"libc/tinystdio/fcvtfbuf.c",
+	"libc/tinystdio/fcvtf.c",
+	"libc/tinystdio/fdevopen.c",
+	//"libc/tinystdio/fdopen.c", // posix-io
+	"libc/tinystdio/feof.c",
+	"libc/tinystdio/ferror.c",
+	"libc/tinystdio/fflush.c",
+	"libc/tinystdio/fgetc.c",
+	"libc/tinystdio/fgets.c",
+	"libc/tinystdio/fileno.c",
+	"libc/tinystdio/filestrget.c",
+	"libc/tinystdio/filestrputalloc.c",
+	"libc/tinystdio/filestrput.c",
+	//"libc/tinystdio/fopen.c", // posix-io
+	"libc/tinystdio/fprintf.c",
+	"libc/tinystdio/fputc.c",
+	"libc/tinystdio/fputs.c",
+	"libc/tinystdio/fread.c",
+	"libc/tinystdio/fscanf.c",
+	"libc/tinystdio/fseek.c",
+	"libc/tinystdio/ftell.c",
+	"libc/tinystdio/ftoa_data.c",
+	"libc/tinystdio/ftoa_engine.c",
+	"libc/tinystdio/ftoa_ryu.c",
+	"libc/tinystdio/fwrite.c",
+	"libc/tinystdio/gcvtbuf.c",
+	"libc/tinystdio/gcvt.c",
+	"libc/tinystdio/gcvtfbuf.c",
+	"libc/tinystdio/gcvtf.c",
+	"libc/tinystdio/getchar.c",
+	"libc/tinystdio/gets.c",
+	"libc/tinystdio/matchcaseprefix.c",
+	"libc/tinystdio/perror.c",
+	//"libc/tinystdio/posixiob.c", // posix-io
+	//"libc/tinystdio/posixio.c", // posix-io
+	"libc/tinystdio/printf.c",
+	"libc/tinystdio/putchar.c",
+	"libc/tinystdio/puts.c",
+	"libc/tinystdio/ryu_divpow2.c",
+	"libc/tinystdio/ryu_log10.c",
+	"libc/tinystdio/ryu_log2pow5.c",
+	"libc/tinystdio/ryu_pow5bits.c",
+	"libc/tinystdio/ryu_table.c",
+	"libc/tinystdio/ryu_umul128.c",
+	"libc/tinystdio/scanf.c",
+	"libc/tinystdio/setbuf.c",
+	"libc/tinystdio/setvbuf.c",
+	//"libc/tinystdio/sflags.c", // posix-io
+	"libc/tinystdio/snprintf.c",
+	"libc/tinystdio/snprintfd.c",
+	"libc/tinystdio/snprintff.c",
+	"libc/tinystdio/sprintf.c",
+	"libc/tinystdio/sprintfd.c",
+	"libc/tinystdio/sprintff.c",
+	"libc/tinystdio/sscanf.c",
+	"libc/tinystdio/strfromd.c",
+	"libc/tinystdio/strfromf.c",
+	"libc/tinystdio/strtod.c",
+	"libc/tinystdio/strtod_l.c",
+	"libc/tinystdio/strtof.c",
+	//"libc/tinystdio/strtold.c",   // have_long_double and not long_double_equals_double
+	//"libc/tinystdio/strtold_l.c", // have_long_double and not long_double_equals_double
+	"libc/tinystdio/ungetc.c",
+	"libc/tinystdio/vasprintf.c",
+	"libc/tinystdio/vfiprintf.c",
+	"libc/tinystdio/vfiscanf.c",
+	"libc/tinystdio/vfprintf.c",
+	"libc/tinystdio/vfprintff.c",
+	"libc/tinystdio/vfscanf.c",
+	"libc/tinystdio/vfscanff.c",
+	"libc/tinystdio/vprintf.c",
+	"libc/tinystdio/vscanf.c",
+	"libc/tinystdio/vsnprintf.c",
+	"libc/tinystdio/vsprintf.c",
+	"libc/tinystdio/vsscanf.c",
 
-	"string/bcmp.c",
-	"string/bcopy.c",
-	"string/bzero.c",
-	"string/explicit_bzero.c",
-	"string/ffsl.c",
-	"string/ffsll.c",
-	"string/fls.c",
-	"string/flsl.c",
-	"string/flsll.c",
-	"string/gnu_basename.c",
-	"string/index.c",
-	"string/memccpy.c",
-	"string/memchr.c",
-	"string/memcmp.c",
-	"string/memcpy.c",
-	"string/memmem.c",
-	"string/memmove.c",
-	"string/mempcpy.c",
-	"string/memrchr.c",
-	"string/memset.c",
-	"string/rawmemchr.c",
-	"string/rindex.c",
-	"string/stpcpy.c",
-	"string/stpncpy.c",
-	"string/strcasecmp.c",
-	"string/strcasecmp_l.c",
-	"string/strcasestr.c",
-	"string/strcat.c",
-	"string/strchr.c",
-	"string/strchrnul.c",
-	"string/strcmp.c",
-	"string/strcoll.c",
-	"string/strcoll_l.c",
-	"string/strcpy.c",
-	"string/strcspn.c",
-	"string/strdup.c",
-	"string/strerror.c",
-	"string/strerror_r.c",
-	"string/strlcat.c",
-	"string/strlcpy.c",
-	"string/strlen.c",
-	"string/strlwr.c",
-	"string/strncasecmp.c",
-	"string/strncasecmp_l.c",
-	"string/strncat.c",
-	"string/strncmp.c",
-	"string/strncpy.c",
-	"string/strndup.c",
-	"string/strnlen.c",
-	"string/strnstr.c",
-	"string/strpbrk.c",
-	"string/strrchr.c",
-	"string/strsep.c",
-	"string/strsignal.c",
-	"string/strspn.c",
-	"string/strstr.c",
-	"string/strtok.c",
-	"string/strtok_r.c",
-	"string/strupr.c",
-	"string/strverscmp.c",
-	"string/strxfrm.c",
-	"string/strxfrm_l.c",
-	"string/swab.c",
-	"string/timingsafe_bcmp.c",
-	"string/timingsafe_memcmp.c",
-	"string/u_strerr.c",
-	"string/wcpcpy.c",
-	"string/wcpncpy.c",
-	"string/wcscasecmp.c",
-	"string/wcscasecmp_l.c",
-	"string/wcscat.c",
-	"string/wcschr.c",
-	"string/wcscmp.c",
-	"string/wcscoll.c",
-	"string/wcscoll_l.c",
-	"string/wcscpy.c",
-	"string/wcscspn.c",
-	"string/wcsdup.c",
-	"string/wcslcat.c",
-	"string/wcslcpy.c",
-	"string/wcslen.c",
-	"string/wcsncasecmp.c",
-	"string/wcsncasecmp_l.c",
-	"string/wcsncat.c",
-	"string/wcsncmp.c",
-	"string/wcsncpy.c",
-	"string/wcsnlen.c",
-	"string/wcspbrk.c",
-	"string/wcsrchr.c",
-	"string/wcsspn.c",
-	"string/wcsstr.c",
-	"string/wcstok.c",
-	"string/wcswidth.c",
-	"string/wcsxfrm.c",
-	"string/wcsxfrm_l.c",
-	"string/wcwidth.c",
-	"string/wmemchr.c",
-	"string/wmemcmp.c",
-	"string/wmemcpy.c",
-	"string/wmemmove.c",
-	"string/wmempcpy.c",
-	"string/wmemset.c",
-	"string/xpg_strerror_r.c",
+	"libc/string/bcmp.c",
+	"libc/string/bcopy.c",
+	"libc/string/bzero.c",
+	"libc/string/explicit_bzero.c",
+	"libc/string/ffsl.c",
+	"libc/string/ffsll.c",
+	"libc/string/fls.c",
+	"libc/string/flsl.c",
+	"libc/string/flsll.c",
+	"libc/string/gnu_basename.c",
+	"libc/string/index.c",
+	"libc/string/memccpy.c",
+	"libc/string/memchr.c",
+	"libc/string/memcmp.c",
+	"libc/string/memcpy.c",
+	"libc/string/memmem.c",
+	"libc/string/memmove.c",
+	"libc/string/mempcpy.c",
+	"libc/string/memrchr.c",
+	"libc/string/memset.c",
+	"libc/string/rawmemchr.c",
+	"libc/string/rindex.c",
+	"libc/string/stpcpy.c",
+	"libc/string/stpncpy.c",
+	"libc/string/strcasecmp.c",
+	"libc/string/strcasecmp_l.c",
+	"libc/string/strcasestr.c",
+	"libc/string/strcat.c",
+	"libc/string/strchr.c",
+	"libc/string/strchrnul.c",
+	"libc/string/strcmp.c",
+	"libc/string/strcoll.c",
+	"libc/string/strcoll_l.c",
+	"libc/string/strcpy.c",
+	"libc/string/strcspn.c",
+	"libc/string/strdup.c",
+	"libc/string/strerror.c",
+	"libc/string/strerror_r.c",
+	"libc/string/strlcat.c",
+	"libc/string/strlcpy.c",
+	"libc/string/strlen.c",
+	"libc/string/strlwr.c",
+	"libc/string/strncasecmp.c",
+	"libc/string/strncasecmp_l.c",
+	"libc/string/strncat.c",
+	"libc/string/strncmp.c",
+	"libc/string/strncpy.c",
+	"libc/string/strndup.c",
+	"libc/string/strnlen.c",
+	"libc/string/strnstr.c",
+	"libc/string/strpbrk.c",
+	"libc/string/strrchr.c",
+	"libc/string/strsep.c",
+	"libc/string/strsignal.c",
+	"libc/string/strspn.c",
+	"libc/string/strstr.c",
+	"libc/string/strtok.c",
+	"libc/string/strtok_r.c",
+	"libc/string/strupr.c",
+	"libc/string/strverscmp.c",
+	"libc/string/strxfrm.c",
+	"libc/string/strxfrm_l.c",
+	"libc/string/swab.c",
+	"libc/string/timingsafe_bcmp.c",
+	"libc/string/timingsafe_memcmp.c",
+	"libc/string/u_strerr.c",
+	"libc/string/wcpcpy.c",
+	"libc/string/wcpncpy.c",
+	"libc/string/wcscasecmp.c",
+	"libc/string/wcscasecmp_l.c",
+	"libc/string/wcscat.c",
+	"libc/string/wcschr.c",
+	"libc/string/wcscmp.c",
+	"libc/string/wcscoll.c",
+	"libc/string/wcscoll_l.c",
+	"libc/string/wcscpy.c",
+	"libc/string/wcscspn.c",
+	"libc/string/wcsdup.c",
+	"libc/string/wcslcat.c",
+	"libc/string/wcslcpy.c",
+	"libc/string/wcslen.c",
+	"libc/string/wcsncasecmp.c",
+	"libc/string/wcsncasecmp_l.c",
+	"libc/string/wcsncat.c",
+	"libc/string/wcsncmp.c",
+	"libc/string/wcsncpy.c",
+	"libc/string/wcsnlen.c",
+	"libc/string/wcspbrk.c",
+	"libc/string/wcsrchr.c",
+	"libc/string/wcsspn.c",
+	"libc/string/wcsstr.c",
+	"libc/string/wcstok.c",
+	"libc/string/wcswidth.c",
+	"libc/string/wcsxfrm.c",
+	"libc/string/wcsxfrm_l.c",
+	"libc/string/wcwidth.c",
+	"libc/string/wmemchr.c",
+	"libc/string/wmemcmp.c",
+	"libc/string/wmemcpy.c",
+	"libc/string/wmemmove.c",
+	"libc/string/wmempcpy.c",
+	"libc/string/wmemset.c",
+	"libc/string/xpg_strerror_r.c",
+
+	"libm/common/sf_finite.c",
+	"libm/common/sf_copysign.c",
+	"libm/common/sf_modf.c",
+	"libm/common/sf_scalbn.c",
+	"libm/common/sf_cbrt.c",
+	"libm/common/sf_exp10.c",
+	"libm/common/sf_expm1.c",
+	"libm/common/sf_ilogb.c",
+	"libm/common/sf_infinity.c",
+	"libm/common/sf_isinf.c",
+	"libm/common/sf_isinff.c",
+	"libm/common/sf_isnan.c",
+	"libm/common/sf_isnanf.c",
+	"libm/common/sf_issignaling.c",
+	"libm/common/sf_log1p.c",
+	"libm/common/sf_nan.c",
+	"libm/common/sf_nextafter.c",
+	"libm/common/sf_pow10.c",
+	"libm/common/sf_rint.c",
+	"libm/common/sf_logb.c",
+	"libm/common/sf_fdim.c",
+	"libm/common/sf_fma.c",
+	"libm/common/sf_fmax.c",
+	"libm/common/sf_fmin.c",
+	"libm/common/sf_fpclassify.c",
+	"libm/common/sf_lrint.c",
+	"libm/common/sf_llrint.c",
+	"libm/common/sf_lround.c",
+	"libm/common/sf_llround.c",
+	"libm/common/sf_nearbyint.c",
+	"libm/common/sf_remquo.c",
+	"libm/common/sf_round.c",
+	"libm/common/sf_scalbln.c",
+	"libm/common/sf_trunc.c",
+	"libm/common/sf_exp.c",
+	"libm/common/sf_exp2.c",
+	"libm/common/sf_exp2_data.c",
+	"libm/common/sf_log.c",
+	"libm/common/sf_log_data.c",
+	"libm/common/sf_log2.c",
+	"libm/common/sf_log2_data.c",
+	"libm/common/sf_pow_log2_data.c",
+	"libm/common/sf_pow.c",
+
+	"libm/common/s_finite.c",
+	"libm/common/s_copysign.c",
+	"libm/common/s_modf.c",
+	"libm/common/s_scalbn.c",
+	"libm/common/s_cbrt.c",
+	"libm/common/s_exp10.c",
+	"libm/common/s_expm1.c",
+	"libm/common/s_ilogb.c",
+	"libm/common/s_infinity.c",
+	"libm/common/s_isinf.c",
+	"libm/common/s_isinfd.c",
+	"libm/common/s_isnan.c",
+	"libm/common/s_isnand.c",
+	"libm/common/s_issignaling.c",
+	"libm/common/s_log1p.c",
+	"libm/common/s_nan.c",
+	"libm/common/s_nextafter.c",
+	"libm/common/s_pow10.c",
+	"libm/common/s_rint.c",
+	"libm/common/s_logb.c",
+	"libm/common/s_log2.c",
+	"libm/common/s_fdim.c",
+	"libm/common/s_fma.c",
+	"libm/common/s_fmax.c",
+	"libm/common/s_fmin.c",
+	"libm/common/s_fpclassify.c",
+	"libm/common/s_lrint.c",
+	"libm/common/s_llrint.c",
+	"libm/common/s_lround.c",
+	"libm/common/s_llround.c",
+	"libm/common/s_nearbyint.c",
+	"libm/common/s_remquo.c",
+	"libm/common/s_round.c",
+	"libm/common/s_scalbln.c",
+	"libm/common/s_signbit.c",
+	"libm/common/s_trunc.c",
+	"libm/common/exp.c",
+	"libm/common/exp2.c",
+	"libm/common/exp_data.c",
+	"libm/common/math_err_with_errno.c",
+	"libm/common/math_err_xflow.c",
+	"libm/common/math_err_uflow.c",
+	"libm/common/math_err_oflow.c",
+	"libm/common/math_err_divzero.c",
+	"libm/common/math_err_invalid.c",
+	"libm/common/math_err_may_uflow.c",
+	"libm/common/math_err_check_uflow.c",
+	"libm/common/math_err_check_oflow.c",
+	"libm/common/log.c",
+	"libm/common/log_data.c",
+	"libm/common/log2.c",
+	"libm/common/log2_data.c",
+	"libm/common/pow.c",
+	"libm/common/pow_log_data.c",
+
+	"libm/math/e_acos.c",
+	"libm/math/e_acosh.c",
+	"libm/math/e_asin.c",
+	"libm/math/e_atan2.c",
+	"libm/math/e_atanh.c",
+	"libm/math/e_cosh.c",
+	"libm/math/e_exp.c",
+	"libm/math/ef_acos.c",
+	"libm/math/ef_acosh.c",
+	"libm/math/ef_asin.c",
+	"libm/math/ef_atan2.c",
+	"libm/math/ef_atanh.c",
+	"libm/math/ef_cosh.c",
+	"libm/math/ef_exp.c",
+	"libm/math/ef_fmod.c",
+	"libm/math/ef_hypot.c",
+	"libm/math/ef_j0.c",
+	"libm/math/ef_j1.c",
+	"libm/math/ef_jn.c",
+	"libm/math/ef_lgamma.c",
+	"libm/math/ef_log10.c",
+	"libm/math/ef_log.c",
+	"libm/math/e_fmod.c",
+	"libm/math/ef_pow.c",
+	"libm/math/ef_remainder.c",
+	"libm/math/ef_rem_pio2.c",
+	"libm/math/ef_scalb.c",
+	"libm/math/ef_sinh.c",
+	"libm/math/ef_sqrt.c",
+	"libm/math/ef_tgamma.c",
+	"libm/math/e_hypot.c",
+	"libm/math/e_j0.c",
+	"libm/math/e_j1.c",
+	"libm/math/e_jn.c",
+	"libm/math/e_lgamma.c",
+	"libm/math/e_log10.c",
+	"libm/math/e_log.c",
+	"libm/math/e_pow.c",
+	"libm/math/e_remainder.c",
+	"libm/math/e_rem_pio2.c",
+	"libm/math/erf_lgamma.c",
+	"libm/math/er_lgamma.c",
+	"libm/math/e_scalb.c",
+	"libm/math/e_sinh.c",
+	"libm/math/e_sqrt.c",
+	"libm/math/e_tgamma.c",
+	"libm/math/s_asinh.c",
+	"libm/math/s_atan.c",
+	"libm/math/s_ceil.c",
+	"libm/math/s_cos.c",
+	"libm/math/s_erf.c",
+	"libm/math/s_fabs.c",
+	"libm/math/sf_asinh.c",
+	"libm/math/sf_atan.c",
+	"libm/math/sf_ceil.c",
+	"libm/math/sf_cos.c",
+	"libm/math/sf_erf.c",
+	"libm/math/sf_fabs.c",
+	"libm/math/sf_floor.c",
+	"libm/math/sf_frexp.c",
+	"libm/math/sf_ldexp.c",
+	"libm/math/s_floor.c",
+	"libm/math/s_frexp.c",
+	"libm/math/sf_signif.c",
+	"libm/math/sf_sin.c",
+	"libm/math/sf_tan.c",
+	"libm/math/sf_tanh.c",
+	"libm/math/s_ldexp.c",
+	"libm/math/s_signif.c",
+	"libm/math/s_sin.c",
+	"libm/math/s_tan.c",
+	"libm/math/s_tanh.c",
 }

builder/sizes.go

@@ -127,7 +127,7 @@ var (
 // readProgramSizeFromDWARF reads the source location for each line of code and
 // each variable in the program, as far as this is stored in the DWARF debug
 // information.
-func readProgramSizeFromDWARF(data *dwarf.Data, codeOffset uint64) ([]addressLine, error) {
+func readProgramSizeFromDWARF(data *dwarf.Data, codeOffset uint64, skipTombstone bool) ([]addressLine, error) {
 	r := data.Reader()
 	var lines []*dwarf.LineFile
 	var addresses []addressLine
@@ -169,7 +169,7 @@ func readProgramSizeFromDWARF(data *dwarf.Data, codeOffset uint64) ([]addressLin
 					return nil, err
 				}
 
-				if prevLineEntry.EndSequence && lineEntry.Address == 0 {
+				if prevLineEntry.EndSequence && lineEntry.Address == 0 && skipTombstone {
 					// Tombstone value. This symbol has been removed, for
 					// example by the --gc-sections linker flag. It is still
 					// here in the debug information because the linker can't
@@ -178,6 +178,10 @@ func readProgramSizeFromDWARF(data *dwarf.Data, codeOffset uint64) ([]addressLin
 					// skipped.
 					// For more details, see (among others):
 					// https://reviews.llvm.org/D84825
+					// The value 0 can however really occur in object files,
+					// that typically start at address 0. So don't skip
+					// tombstone values in object files (like when parsing MachO
+					// files).
 					for {
 						err := lr.Next(&lineEntry)
 						if err != nil {
@@ -256,6 +260,65 @@ func readProgramSizeFromDWARF(data *dwarf.Data, codeOffset uint64) ([]addressLin
 	return addresses, nil
 }
 
+// Read a MachO object file and return a line table.
+// Also return an index from symbol name to start address in the line table.
+func readMachOSymbolAddresses(path string) (map[string]int, []addressLine, error) {
+	// Some constants from mach-o/nlist.h
+	// See: https://opensource.apple.com/source/xnu/xnu-7195.141.2/EXTERNAL_HEADERS/mach-o/nlist.h.auto.html
+	const (
+		N_STAB = 0xe0
+		N_TYPE = 0x0e // bitmask for N_TYPE field
+		N_SECT = 0xe  // one of the possible type in the N_TYPE field
+	)
+
+	// Read DWARF from the given object file.
+	file, err := macho.Open(path)
+	if err != nil {
+		return nil, nil, err
+	}
+	defer file.Close()
+	dwarf, err := file.DWARF()
+	if err != nil {
+		return nil, nil, err
+	}
+	lines, err := readProgramSizeFromDWARF(dwarf, 0, false)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	// Make a map from start addresses to indices in the line table (because the
+	// line table is a slice, not a map).
+	addressToLine := make(map[uint64]int, len(lines))
+	for i, line := range lines {
+		if _, ok := addressToLine[line.Address]; ok {
+			addressToLine[line.Address] = -1
+			continue
+		}
+		addressToLine[line.Address] = i
+	}
+
+	// Make a map that for each symbol gives the start index in the line table.
+	addresses := make(map[string]int, len(addressToLine))
+	for _, symbol := range file.Symtab.Syms {
+		if symbol.Type&N_STAB != 0 {
+			continue // STABS entry, ignore
+		}
+		if symbol.Type&0x0e != N_SECT {
+			continue // undefined symbol
+		}
+		if index, ok := addressToLine[symbol.Value]; ok && index >= 0 {
+			if _, ok := addresses[symbol.Name]; ok {
+				// There is a duplicate. Mark it as unavailable.
+				addresses[symbol.Name] = -1
+				continue
+			}
+			addresses[symbol.Name] = index
+		}
+	}
+
+	return addresses, lines, nil
+}
+
 // loadProgramSize calculate a program/data size breakdown of each package for a
 // given ELF file.
 // If the file doesn't contain DWARF debug information, the returned program
@@ -278,7 +341,7 @@ func loadProgramSize(path string, packagePathMap map[string]string) (*programSiz
 		// Read DWARF information. The error is intentionally ignored.
 		data, _ := file.DWARF()
 		if data != nil {
-			addresses, err = readProgramSizeFromDWARF(data, 0)
+			addresses, err = readProgramSizeFromDWARF(data, 0, true)
 			if err != nil {
 				// However, _do_ report an error here. Something must have gone
 				// wrong while trying to parse DWARF data.
@@ -370,11 +433,6 @@ func loadProgramSize(path string, packagePathMap map[string]string) (*programSiz
 			}
 		}
 	} else if file, err := macho.NewFile(f); err == nil {
-		// TODO: read DWARF information. On MacOS, DWARF debug information isn't
-		// stored in the executable but stays in the object files. The
-		// executable does however contain the object file paths that contain
-		// debug information.
-
 		// Read segments, for use while reading through sections.
 		segments := map[string]*macho.Segment{}
 		for _, load := range file.Loads {
@@ -421,11 +479,86 @@ func loadProgramSize(path string, packagePathMap map[string]string) (*programSiz
 				})
 			}
 		}
+
+		// Read DWARF information.
+		// The data isn't stored directly in the binary as in most executable
+		// formats. Instead, it is left in the object files that were used as a
+		// basis for linking. The executable does however contain STABS debug
+		// information that points to the source object file and is used by
+		// debuggers.
+		// For more information:
+		// http://wiki.dwarfstd.org/index.php?title=Apple%27s_%22Lazy%22_DWARF_Scheme
+		var objSymbolNames map[string]int
+		var objAddresses []addressLine
+		var previousSymbol macho.Symbol
+		for _, symbol := range file.Symtab.Syms {
+			// STABS constants, from mach-o/stab.h:
+			// https://opensource.apple.com/source/xnu/xnu-7195.141.2/EXTERNAL_HEADERS/mach-o/stab.h.auto.html
+			const (
+				N_GSYM  = 0x20
+				N_FUN   = 0x24
+				N_STSYM = 0x26
+				N_SO    = 0x64
+				N_OSO   = 0x66
+			)
+			if symbol.Type == N_OSO {
+				// Found an object file. Now try to parse it.
+				objSymbolNames, objAddresses, err = readMachOSymbolAddresses(symbol.Name)
+				if err != nil && sizesDebug {
+					// Errors are normally ignored. If there is an error, it's
+					// simply treated as that the DWARF is not available.
+					fmt.Fprintf(os.Stderr, "could not read DWARF from file %s: %s\n", symbol.Name, err)
+				}
+			} else if symbol.Type == N_FUN {
+				// Found a function.
+				// The way this is encoded is a bit weird. MachO symbols don't
+				// have a length. What I've found is that the length is encoded
+				// by first having a N_FUN symbol as usual, and then having a
+				// symbol with a zero-length name that has the value not set to
+				// the address of the symbol but to the length. So in order to
+				// get both the address and the length, we look for a symbol
+				// with a name followed by a symbol without a name.
+				if symbol.Name == "" && previousSymbol.Type == N_FUN && previousSymbol.Name != "" {
+					// Functions are encoded as many small chunks in the line
+					// table (one or a few instructions per source line). But
+					// the symbol length covers the whole symbols, over many
+					// lines and possibly including inlined functions. So we
+					// continue to iterate through the objAddresses slice until
+					// we've found all the source lines that are part of this
+					// symbol.
+					address := previousSymbol.Value
+					length := symbol.Value
+					if index, ok := objSymbolNames[previousSymbol.Name]; ok && index >= 0 {
+						for length > 0 {
+							line := objAddresses[index]
+							line.Address = address
+							if line.Length > length {
+								// Line extends beyond the end of te symbol?
+								// Weird, shouldn't happen.
+								break
+							}
+							addresses = append(addresses, line)
+							index++
+							length -= line.Length
+							address += line.Length
+						}
+					}
+				}
+			} else if symbol.Type == N_GSYM || symbol.Type == N_STSYM {
+				// Global variables.
+				if index, ok := objSymbolNames[symbol.Name]; ok {
+					address := objAddresses[index]
+					address.Address = symbol.Value
+					addresses = append(addresses, address)
+				}
+			}
+			previousSymbol = symbol
+		}
 	} else if file, err := pe.NewFile(f); err == nil {
 		// Read DWARF information. The error is intentionally ignored.
 		data, _ := file.DWARF()
 		if data != nil {
-			addresses, err = readProgramSizeFromDWARF(data, 0)
+			addresses, err = readProgramSizeFromDWARF(data, 0, true)
 			if err != nil {
 				// However, _do_ report an error here. Something must have gone
 				// wrong while trying to parse DWARF data.
@@ -495,9 +628,9 @@ func loadProgramSize(path string, packagePathMap map[string]string) (*programSiz
 		const codeOffset = 0x8000_0000_0000_0000
 
 		// Read DWARF information. The error is intentionally ignored.
-		data, err := file.DWARF()
+		data, _ := file.DWARF()
 		if data != nil {
-			addresses, err = readProgramSizeFromDWARF(data, codeOffset)
+			addresses, err = readProgramSizeFromDWARF(data, codeOffset, true)
 			if err != nil {
 				// However, _do_ report an error here. Something must have gone
 				// wrong while trying to parse DWARF data.

builder/uf2.go

@@ -10,7 +10,7 @@ package builder
 import (
 	"bytes"
 	"encoding/binary"
-	"io/ioutil"
+	"os"
 	"strconv"
 )
 
@@ -26,7 +26,7 @@ func convertELFFileToUF2File(infile, outfile string, uf2FamilyID string) error {
 	if err != nil {
 		return err
 	}
-	return ioutil.WriteFile(outfile, output, 0644)
+	return os.WriteFile(outfile, output, 0644)
 }
 
 // convertBinToUF2 converts the binary bytes in input to UF2 formatted data.

cgo/cgo.go

@@ -32,6 +32,7 @@ type cgoPackage struct {
 	errors          []error
 	currentDir      string // current working directory
 	packageDir      string // full path to the package to process
+	importPath      string
 	fset            *token.FileSet
 	tokenFiles      map[string]*token.File
 	definedGlobally map[string]ast.Node
@@ -39,12 +40,15 @@ type cgoPackage struct {
 	cflags          []string // CFlags from #cgo lines
 	ldflags         []string // LDFlags from #cgo lines
 	visitedFiles    map[string][]byte
+	cgoHeaders      []string
 }
 
 // cgoFile holds information only for a single Go file (with one or more
 // `import "C"` statements).
 type cgoFile struct {
 	*cgoPackage
+	file    *ast.File
+	index   int
 	defined map[string]ast.Node
 	names   map[string]clangCursor
 }
@@ -158,9 +162,10 @@ func GoBytes(ptr unsafe.Pointer, length C.int) []byte {
 // functions), the CFLAGS and LDFLAGS found in #cgo lines, and a map of file
 // hashes of the accessed C header files. If there is one or more error, it
 // returns these in the []error slice but still modifies the AST.
-func Process(files []*ast.File, dir string, fset *token.FileSet, cflags []string, clangHeaders string) (*ast.File, []string, []string, []string, map[string][]byte, []error) {
+func Process(files []*ast.File, dir, importPath string, fset *token.FileSet, cflags []string, clangHeaders string) (*ast.File, []string, []string, []string, map[string][]byte, []error) {
 	p := &cgoPackage{
 		currentDir:      dir,
+		importPath:      importPath,
 		fset:            fset,
 		tokenFiles:      map[string]*token.File{},
 		definedGlobally: map[string]ast.Node{},
@@ -210,13 +215,13 @@ func Process(files []*ast.File, dir string, fset *token.FileSet, cflags []string
 		}
 	}
 	// Patch some types, for example *C.char in C.CString.
-	cf := p.newCGoFile()
+	cf := p.newCGoFile(nil, -1) // dummy *cgoFile for the walker
 	astutil.Apply(p.generated, func(cursor *astutil.Cursor) bool {
 		return cf.walker(cursor, nil)
 	}, nil)
 
 	// Find `import "C"` C fragments in the file.
-	cgoHeaders := make([]string, len(files)) // combined CGo header fragment for each file
+	p.cgoHeaders = make([]string, len(files)) // combined CGo header fragment for each file
 	for i, f := range files {
 		var cgoHeader string
 		for i := 0; i < len(f.Decls); i++ {
@@ -275,7 +280,7 @@ func Process(files []*ast.File, dir string, fset *token.FileSet, cflags []string
 			cgoHeader += fragment
 		}
 
-		cgoHeaders[i] = cgoHeader
+		p.cgoHeaders[i] = cgoHeader
 	}
 
 	// Define CFlags that will be used while parsing the package.
@@ -289,7 +294,7 @@ func Process(files []*ast.File, dir string, fset *token.FileSet, cflags []string
 	}
 
 	// Retrieve types such as C.int, C.longlong, etc from C.
-	p.newCGoFile().readNames(builtinAliasTypedefs, cflagsForCGo, "", func(names map[string]clangCursor) {
+	p.newCGoFile(nil, -1).readNames(builtinAliasTypedefs, cflagsForCGo, "", func(names map[string]clangCursor) {
 		gen := &ast.GenDecl{
 			TokPos: token.NoPos,
 			Tok:    token.TYPE,
@@ -303,8 +308,8 @@ func Process(files []*ast.File, dir string, fset *token.FileSet, cflags []string
 
 	// Process CGo imports for each file.
 	for i, f := range files {
-		cf := p.newCGoFile()
-		cf.readNames(cgoHeaders[i], cflagsForCGo, filepath.Base(fset.File(f.Pos()).Name()), func(names map[string]clangCursor) {
+		cf := p.newCGoFile(f, i)
+		cf.readNames(p.cgoHeaders[i], cflagsForCGo, filepath.Base(fset.File(f.Pos()).Name()), func(names map[string]clangCursor) {
 			for _, name := range builtinAliases {
 				// Names such as C.int should not be obtained from C.
 				// This works around an issue in picolibc that has `#define int`
@@ -320,12 +325,14 @@ func Process(files []*ast.File, dir string, fset *token.FileSet, cflags []string
 	// Print the newly generated in-memory AST, for debugging.
 	//ast.Print(fset, p.generated)
 
-	return p.generated, cgoHeaders, p.cflags, p.ldflags, p.visitedFiles, p.errors
+	return p.generated, p.cgoHeaders, p.cflags, p.ldflags, p.visitedFiles, p.errors
 }
 
-func (p *cgoPackage) newCGoFile() *cgoFile {
+func (p *cgoPackage) newCGoFile(file *ast.File, index int) *cgoFile {
 	return &cgoFile{
 		cgoPackage: p,
+		file:       file,
+		index:      index,
 		defined:    make(map[string]ast.Node),
 		names:      make(map[string]clangCursor),
 	}
@@ -493,15 +500,15 @@ func (p *cgoPackage) makeUnionField(typ *elaboratedTypeInfo) *ast.StructType {
 // createUnionAccessor creates a function that returns a typed pointer to a
 // union field for each field in a union. For example:
 //
-//     func (union *C.union_1) unionfield_d() *float64 {
-//         return (*float64)(unsafe.Pointer(&union.$union))
-//     }
+//	func (union *C.union_1) unionfield_d() *float64 {
+//	    return (*float64)(unsafe.Pointer(&union.$union))
+//	}
 //
 // Where C.union_1 is defined as:
 //
-//     type C.union_1 struct{
-//         $union uint64
-//     }
+//	type C.union_1 struct{
+//	    $union uint64
+//	}
 //
 // The returned pointer can be used to get or set the field, or get the pointer
 // to a subfield.
@@ -617,9 +624,9 @@ func (p *cgoPackage) createUnionAccessor(field *ast.Field, typeName string) {
 
 // createBitfieldGetter creates a bitfield getter function like the following:
 //
-//     func (s *C.struct_foo) bitfield_b() byte {
-//         return (s.__bitfield_1 >> 5) & 0x1
-//     }
+//	func (s *C.struct_foo) bitfield_b() byte {
+//	    return (s.__bitfield_1 >> 5) & 0x1
+//	}
 func (p *cgoPackage) createBitfieldGetter(bitfield bitfieldInfo, typeName string) {
 	// The value to return from the getter.
 	// Not complete: this is just an expression to get the complete field.
@@ -729,15 +736,15 @@ func (p *cgoPackage) createBitfieldGetter(bitfield bitfieldInfo, typeName string
 
 // createBitfieldSetter creates a bitfield setter function like the following:
 //
-//     func (s *C.struct_foo) set_bitfield_b(value byte) {
-//         s.__bitfield_1 = s.__bitfield_1 ^ 0x60 | ((value & 1) << 5)
-//     }
+//	func (s *C.struct_foo) set_bitfield_b(value byte) {
+//	    s.__bitfield_1 = s.__bitfield_1 ^ 0x60 | ((value & 1) << 5)
+//	}
 //
 // Or the following:
 //
-//     func (s *C.struct_foo) set_bitfield_c(value byte) {
-//         s.__bitfield_1 = s.__bitfield_1 & 0x3f | (value << 6)
-//     }
+//	func (s *C.struct_foo) set_bitfield_c(value byte) {
+//	    s.__bitfield_1 = s.__bitfield_1 & 0x3f | (value << 6)
+//	}
 func (p *cgoPackage) createBitfieldSetter(bitfield bitfieldInfo, typeName string) {
 	// The full field with all bitfields.
 	var field ast.Expr = &ast.SelectorExpr{
@@ -1117,8 +1124,11 @@ func (f *cgoFile) getASTDeclName(name string, found clangCursor, iscall bool) st
 		return alias
 	}
 	node := f.getASTDeclNode(name, found, iscall)
-	if _, ok := node.(*ast.FuncDecl); ok && !iscall {
-		return "C." + name + "$funcaddr"
+	if node, ok := node.(*ast.FuncDecl); ok {
+		if !iscall {
+			return node.Name.Name + "$funcaddr"
+		}
+		return node.Name.Name
 	}
 	return "C." + name
 }
@@ -1142,7 +1152,7 @@ func (f *cgoFile) getASTDeclNode(name string, found clangCursor, iscall bool) as
 			// Original cgo reports an error like
 			//   cgo: inconsistent definitions for C.myint
 			// which is far less helpful.
-			f.addError(getPos(node), "defined previously at "+f.fset.Position(getPos(newNode)).String()+" with a different type")
+			f.addError(getPos(node), name+" defined previously at "+f.fset.Position(getPos(newNode)).String()+" with a different type")
 		}
 		f.defined[name] = node
 		return node
@@ -1150,11 +1160,39 @@ func (f *cgoFile) getASTDeclNode(name string, found clangCursor, iscall bool) as
 
 	// The declaration has no AST node. Create it now.
 	f.defined[name] = nil
-	node, elaboratedType := f.createASTNode(name, found)
+	node, extra := f.createASTNode(name, found)
 	f.defined[name] = node
-	f.definedGlobally[name] = node
 	switch node := node.(type) {
 	case *ast.FuncDecl:
+		if strings.HasPrefix(node.Doc.List[0].Text, "//export _Cgo_static_") {
+			// Static function. Only accessible in the current Go file.
+			globalName := strings.TrimPrefix(node.Doc.List[0].Text, "//export ")
+			// Make an alias. Normally this is done using the alias function
+			// attribute, but MacOS for some reason doesn't support this (even
+			// though the linker has support for aliases in the form of N_INDR).
+			// Therefore, create an actual function for MacOS.
+			var params []string
+			for _, param := range node.Type.Params.List {
+				params = append(params, param.Names[0].Name)
+			}
+			callInst := fmt.Sprintf("%s(%s);", name, strings.Join(params, ", "))
+			if node.Type.Results != nil {
+				callInst = "return " + callInst
+			}
+			aliasDeclaration := fmt.Sprintf(`
+#ifdef __APPLE__
+%s {
+	%s
+}
+#else
+extern __typeof(%s) %s __attribute__((alias(%#v)));
+#endif
+`, extra.(string), callInst, name, globalName, name)
+			f.cgoHeaders[f.index] += "\n\n" + aliasDeclaration
+		} else {
+			// Regular (non-static) function.
+			f.definedGlobally[name] = node
+		}
 		f.generated.Decls = append(f.generated.Decls, node)
 		// Also add a declaration like the following:
 		//   var C.foo$funcaddr unsafe.Pointer
@@ -1162,7 +1200,7 @@ func (f *cgoFile) getASTDeclNode(name string, found clangCursor, iscall bool) as
 			Tok: token.VAR,
 			Specs: []ast.Spec{
 				&ast.ValueSpec{
-					Names: []*ast.Ident{{Name: "C." + name + "$funcaddr"}},
+					Names: []*ast.Ident{{Name: node.Name.Name + "$funcaddr"}},
 					Type: &ast.SelectorExpr{
 						X:   &ast.Ident{Name: "unsafe"},
 						Sel: &ast.Ident{Name: "Pointer"},
@@ -1171,8 +1209,10 @@ func (f *cgoFile) getASTDeclNode(name string, found clangCursor, iscall bool) as
 			},
 		})
 	case *ast.GenDecl:
+		f.definedGlobally[name] = node
 		f.generated.Decls = append(f.generated.Decls, node)
 	case *ast.TypeSpec:
+		f.definedGlobally[name] = node
 		f.generated.Decls = append(f.generated.Decls, &ast.GenDecl{
 			Tok:   token.TYPE,
 			Specs: []ast.Spec{node},
@@ -1186,7 +1226,8 @@ func (f *cgoFile) getASTDeclNode(name string, found clangCursor, iscall bool) as
 
 	// If this is a struct or union it may need bitfields or union accessor
 	// methods.
-	if elaboratedType != nil {
+	switch elaboratedType := extra.(type) {
+	case *elaboratedTypeInfo:
 		// Add struct bitfields.
 		for _, bitfield := range elaboratedType.bitfields {
 			f.createBitfieldGetter(bitfield, "C."+name)

cgo/cgo_test.go

@@ -5,12 +5,11 @@ import (
 	"flag"
 	"fmt"
 	"go/ast"
-	"go/build"
 	"go/format"
 	"go/parser"
 	"go/token"
 	"go/types"
-	"io/ioutil"
+	"os"
 	"path/filepath"
 	"runtime"
 	"strings"
@@ -40,20 +39,6 @@ func TestCGo(t *testing.T) {
 	} {
 		name := name // avoid a race condition
 		t.Run(name, func(t *testing.T) {
-			// Skip tests that require specific Go version.
-			if name == "errors" {
-				ok := false
-				for _, version := range build.Default.ReleaseTags {
-					if version == "go1.16" {
-						ok = true
-						break
-					}
-				}
-				if !ok {
-					t.Skip("Results for errors test are only valid for Go 1.16+")
-				}
-			}
-
 			// Read the AST in memory.
 			path := filepath.Join("testdata", name+".go")
 			fset := token.NewFileSet()
@@ -63,7 +48,7 @@ func TestCGo(t *testing.T) {
 			}
 
 			// Process the AST with CGo.
-			cgoAST, _, _, _, _, cgoErrors := Process([]*ast.File{f}, "testdata", fset, cflags, "")
+			cgoAST, _, _, _, _, cgoErrors := Process([]*ast.File{f}, "testdata", "main", fset, cflags, "")
 
 			// Check the AST for type errors.
 			var typecheckErrors []error
@@ -107,7 +92,7 @@ func TestCGo(t *testing.T) {
 
 			// Read the file with the expected output, to compare against.
 			outfile := filepath.Join("testdata", name+".out.go")
-			expectedBytes, err := ioutil.ReadFile(outfile)
+			expectedBytes, err := os.ReadFile(outfile)
 			if err != nil {
 				t.Fatalf("could not read expected output: %v", err)
 			}
@@ -118,7 +103,7 @@ func TestCGo(t *testing.T) {
 				// It is not. Test failed.
 				if *flagUpdate {
 					// Update the file with the expected data.
-					err := ioutil.WriteFile(outfile, []byte(actual), 0666)
+					err := os.WriteFile(outfile, []byte(actual), 0666)
 					if err != nil {
 						t.Error("could not write updated output file:", err)
 					}

cgo/libclang.go

@@ -4,7 +4,9 @@ package cgo
 // modification. It does not touch the AST itself.
 
 import (
+	"crypto/sha256"
 	"crypto/sha512"
+	"encoding/hex"
 	"fmt"
 	"go/ast"
 	"go/scanner"
@@ -13,10 +15,13 @@ import (
 	"strconv"
 	"strings"
 	"unsafe"
+
+	"tinygo.org/x/go-llvm"
 )
 
 /*
 #include <clang-c/Index.h> // If this fails, libclang headers aren't available. Please take a look here: https://tinygo.org/docs/guides/build/
+#include <llvm/Config/llvm-config.h>
 #include <stdlib.h>
 #include <stdint.h>
 
@@ -40,6 +45,8 @@ typedef struct {
 GoCXCursor tinygo_clang_getTranslationUnitCursor(CXTranslationUnit tu);
 unsigned tinygo_clang_visitChildren(GoCXCursor parent, CXCursorVisitor visitor, CXClientData client_data);
 CXString tinygo_clang_getCursorSpelling(GoCXCursor c);
+CXString tinygo_clang_getCursorPrettyPrinted(GoCXCursor c, CXPrintingPolicy Policy);
+CXPrintingPolicy tinygo_clang_getCursorPrintingPolicy(GoCXCursor c);
 enum CXCursorKind tinygo_clang_getCursorKind(GoCXCursor c);
 CXType tinygo_clang_getCursorType(GoCXCursor c);
 GoCXCursor tinygo_clang_getTypeDeclaration(CXType t);
@@ -47,6 +54,7 @@ CXType tinygo_clang_getTypedefDeclUnderlyingType(GoCXCursor c);
 CXType tinygo_clang_getCursorResultType(GoCXCursor c);
 int tinygo_clang_Cursor_getNumArguments(GoCXCursor c);
 GoCXCursor tinygo_clang_Cursor_getArgument(GoCXCursor c, unsigned i);
+enum CX_StorageClass tinygo_clang_Cursor_getStorageClass(GoCXCursor c);
 CXSourceLocation tinygo_clang_getCursorLocation(GoCXCursor c);
 CXSourceRange tinygo_clang_getCursorExtent(GoCXCursor c);
 CXTranslationUnit tinygo_clang_Cursor_getTranslationUnit(GoCXCursor c);
@@ -76,6 +84,16 @@ var diagnosticSeverity = [...]string{
 // theory decoupled from Clang) can also use this type.
 type clangCursor = C.GoCXCursor
 
+func init() {
+	// Check that we haven't messed up LLVM versioning.
+	// This can happen when llvm_config_*.go files in either this or the
+	// tinygo.org/x/go-llvm packages is incorrect. It should not ever happen
+	// with byollvm.
+	if C.LLVM_VERSION_STRING != llvm.Version {
+		panic("incorrect build: using LLVM version " + llvm.Version + " in the tinygo.org/x/llvm package, and version " + C.LLVM_VERSION_STRING + " in the ./cgo package")
+	}
+}
+
 func (f *cgoFile) readNames(fragment string, cflags []string, filename string, callback func(map[string]clangCursor)) {
 	index := C.clang_createIndex(0, 0)
 	defer C.clang_disposeIndex(index)
@@ -176,7 +194,7 @@ func (f *cgoFile) readNames(fragment string, cflags []string, filename string, c
 
 // Convert the AST node under the given Clang cursor to a Go AST node and return
 // it.
-func (f *cgoFile) createASTNode(name string, c clangCursor) (ast.Node, *elaboratedTypeInfo) {
+func (f *cgoFile) createASTNode(name string, c clangCursor) (ast.Node, any) {
 	kind := C.tinygo_clang_getCursorKind(c)
 	pos := f.getCursorPosition(c)
 	switch kind {
@@ -187,19 +205,43 @@ func (f *cgoFile) createASTNode(name string, c clangCursor) (ast.Node, *elaborat
 			Kind: ast.Fun,
 			Name: "C." + name,
 		}
+		exportName := name
+		localName := name
+		var stringSignature string
+		if C.tinygo_clang_Cursor_getStorageClass(c) == C.CX_SC_Static {
+			// A static function is assigned a globally unique symbol name based
+			// on the file path (like _Cgo_static_2d09198adbf58f4f4655_foo) and
+			// has a different Go name in the form of C.foo!symbols.go instead
+			// of just C.foo.
+			path := f.importPath + "/" + filepath.Base(f.fset.File(f.file.Pos()).Name())
+			staticIDBuf := sha256.Sum256([]byte(path))
+			staticID := hex.EncodeToString(staticIDBuf[:10])
+			exportName = "_Cgo_static_" + staticID + "_" + name
+			localName = name + "!" + filepath.Base(path)
+
+			// Create a signature. This is necessary for MacOS to forward the
+			// call, because MacOS doesn't support aliases like ELF and PE do.
+			// (There is N_INDR but __attribute__((alias("..."))) doesn't work).
+			policy := C.tinygo_clang_getCursorPrintingPolicy(c)
+			defer C.clang_PrintingPolicy_dispose(policy)
+			C.clang_PrintingPolicy_setProperty(policy, C.CXPrintingPolicy_TerseOutput, 1)
+			stringSignature = getString(C.tinygo_clang_getCursorPrettyPrinted(c, policy))
+			stringSignature = strings.Replace(stringSignature, " "+name+"(", " "+exportName+"(", 1)
+			stringSignature = strings.TrimPrefix(stringSignature, "static ")
+		}
 		args := make([]*ast.Field, numArgs)
 		decl := &ast.FuncDecl{
 			Doc: &ast.CommentGroup{
 				List: []*ast.Comment{
 					{
 						Slash: pos - 1,
-						Text:  "//export " + name,
+						Text:  "//export " + exportName,
 					},
 				},
 			},
 			Name: &ast.Ident{
 				NamePos: pos,
-				Name:    "C." + name,
+				Name:    "C." + localName,
 				Obj:     obj,
 			},
 			Type: &ast.FuncType{
@@ -250,7 +292,7 @@ func (f *cgoFile) createASTNode(name string, c clangCursor) (ast.Node, *elaborat
 			}
 		}
 		obj.Decl = decl
-		return decl, nil
+		return decl, stringSignature
 	case C.CXCursor_StructDecl, C.CXCursor_UnionDecl:
 		typ := f.makeASTRecordType(c, pos)
 		typeName := "C." + name

cgo/libclang_config_llvm13.go

@@ -1,16 +0,0 @@
-//go:build !byollvm && !llvm14
-// +build !byollvm,!llvm14
-
-package cgo
-
-/*
-#cgo linux        CFLAGS:  -I/usr/lib/llvm-13/include
-#cgo darwin,amd64 CFLAGS:  -I/usr/local/opt/llvm@13/include
-#cgo darwin,arm64 CFLAGS:  -I/opt/homebrew/opt/llvm@13/include
-#cgo freebsd      CFLAGS:  -I/usr/local/llvm13/include
-#cgo linux        LDFLAGS: -L/usr/lib/llvm-13/lib -lclang
-#cgo darwin,amd64 LDFLAGS: -L/usr/local/opt/llvm@13/lib -lclang -lffi
-#cgo darwin,arm64 LDFLAGS: -L/opt/homebrew/opt/llvm@13/lib -lclang -lffi
-#cgo freebsd      LDFLAGS: -L/usr/local/llvm13/lib -lclang
-*/
-import "C"

cgo/libclang_config_llvm14.go

@@ -1,5 +1,5 @@
-//go:build !byollvm && llvm14
-// +build !byollvm,llvm14
+//go:build !byollvm
+// +build !byollvm
 
 package cgo
 

cgo/libclang_stubs.c

@@ -17,6 +17,14 @@ CXString tinygo_clang_getCursorSpelling(CXCursor c) {
 	return clang_getCursorSpelling(c);
 }
 
+CXString tinygo_clang_getCursorPrettyPrinted(CXCursor c, CXPrintingPolicy policy) {
+	return clang_getCursorPrettyPrinted(c, policy);
+}
+
+CXPrintingPolicy tinygo_clang_getCursorPrintingPolicy(CXCursor c) {
+	return clang_getCursorPrintingPolicy(c);
+}
+
 enum CXCursorKind tinygo_clang_getCursorKind(CXCursor c) {
 	return clang_getCursorKind(c);
 }
@@ -45,6 +53,10 @@ CXCursor tinygo_clang_Cursor_getArgument(CXCursor c, unsigned i) {
 	return clang_Cursor_getArgument(c, i);
 }
 
+enum CX_StorageClass tinygo_clang_Cursor_getStorageClass(CXCursor c) {
+	return clang_Cursor_getStorageClass(c);
+}
+
 CXSourceLocation tinygo_clang_getCursorLocation(CXCursor c) {
 	return clang_getCursorLocation(c);
 }

cgo/testdata/symbols.go

@@ -5,6 +5,7 @@ package main
 int foo(int a, int b);
 void variadic0();
 void variadic2(int x, int y, ...);
+static void staticfunc(int x);
 
 // Global variable signatures.
 extern int someValue;
@@ -16,6 +17,7 @@ func accessFunctions() {
 	C.foo(3, 4)
 	C.variadic0()
 	C.variadic2(3, 5)
+	C.staticfunc(3)
 }
 
 func accessGlobals() {

cgo/testdata/symbols.out.go

@@ -55,5 +55,10 @@ func C.variadic2(x C.int, y C.int)
 
 var C.variadic2$funcaddr unsafe.Pointer
 
+//export _Cgo_static_173c95a79b6df1980521_staticfunc
+func C.staticfunc!symbols.go(x C.int)
+
+var C.staticfunc!symbols.go$funcaddr unsafe.Pointer
+
 //go:extern someValue
 var C.someValue C.int

compileopts/config.go

@@ -73,9 +73,7 @@ func (c *Config) BuildTags() []string {
 	for i := 1; i <= c.GoMinorVersion; i++ {
 		tags = append(tags, fmt.Sprintf("go1.%d", i))
 	}
-	if extraTags := strings.Fields(c.Options.Tags); len(extraTags) != 0 {
-		tags = append(tags, extraTags...)
-	}
+	tags = append(tags, c.Options.Tags...)
 	return tags
 }
 
@@ -177,6 +175,15 @@ func (c *Config) AutomaticStackSize() bool {
 	return false
 }
 
+// StackSize returns the default stack size to be used for goroutines, if the
+// stack size could not be determined automatically at compile time.
+func (c *Config) StackSize() uint64 {
+	if c.Options.StackSize != 0 {
+		return c.Options.StackSize
+	}
+	return c.Target.DefaultStackSize
+}
+
 // UseThinLTO returns whether ThinLTO should be used for the given target. Some
 // targets (such as wasm) are not yet supported.
 // We should try and remove as many exceptions as possible in the future, so
@@ -442,13 +449,13 @@ func (c *Config) OpenOCDConfiguration() (args []string, err error) {
 	if openocdInterface == "" {
 		return nil, errors.New("OpenOCD programmer not set")
 	}
-	if !regexp.MustCompile("^[\\p{L}0-9_-]+$").MatchString(openocdInterface) {
+	if !regexp.MustCompile(`^[\p{L}0-9_-]+$`).MatchString(openocdInterface) {
 		return nil, fmt.Errorf("OpenOCD programmer has an invalid name: %#v", openocdInterface)
 	}
 	if c.Target.OpenOCDTarget == "" {
 		return nil, errors.New("OpenOCD chip not set")
 	}
-	if !regexp.MustCompile("^[\\p{L}0-9_-]+$").MatchString(c.Target.OpenOCDTarget) {
+	if !regexp.MustCompile(`^[\p{L}0-9_-]+$`).MatchString(c.Target.OpenOCDTarget) {
 		return nil, fmt.Errorf("OpenOCD target has an invalid name: %#v", c.Target.OpenOCDTarget)
 	}
 	if c.Target.OpenOCDTransport != "" && c.Target.OpenOCDTransport != "swd" {
@@ -459,7 +466,14 @@ func (c *Config) OpenOCDConfiguration() (args []string, err error) {
 		args = append(args, "-c", cmd)
 	}
 	if c.Target.OpenOCDTransport != "" {
-		args = append(args, "-c", "transport select "+c.Target.OpenOCDTransport)
+		transport := c.Target.OpenOCDTransport
+		if transport == "swd" {
+			switch openocdInterface {
+			case "stlink-dap":
+				transport = "dapdirect_swd"
+			}
+		}
+		args = append(args, "-c", "transport select "+transport)
 	}
 	args = append(args, "-f", "target/"+c.Target.OpenOCDTarget+".cfg")
 	return args, nil

compileopts/options.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"regexp"
 	"strings"
+	"time"
 )
 
 var (
@@ -27,8 +28,10 @@ type Options struct {
 	GC              string
 	PanicStrategy   string
 	Scheduler       string
+	StackSize       uint64 // goroutine stack size (if none could be automatically determined)
 	Serial          string
 	Work            bool // -work flag to print temporary build directory
+	InterpTimeout   time.Duration
 	PrintIR         bool
 	DumpSSA         bool
 	VerifyIR        bool
@@ -38,7 +41,7 @@ type Options struct {
 	PrintSizes      string
 	PrintAllocs     *regexp.Regexp // regexp string
 	PrintStacks     bool
-	Tags            string
+	Tags            []string
 	WasmAbi         string
 	GlobalValues    map[string]map[string]string // map[pkgpath]map[varname]value
 	TestConfig      TestConfig
@@ -47,6 +50,8 @@ type Options struct {
 	LLVMFeatures    string
 	Directory       string
 	PrintJSON       bool
+	Monitor         bool
+	BaudRate        int
 }
 
 // Verify performs a validation on the given options, raising an error if options are not valid.

compileopts/target.go

@@ -65,7 +65,7 @@ type TargetSpec struct {
 }
 
 // overrideProperties overrides all properties that are set in child into itself using reflection.
-func (spec *TargetSpec) overrideProperties(child *TargetSpec) {
+func (spec *TargetSpec) overrideProperties(child *TargetSpec) error {
 	specType := reflect.TypeOf(spec).Elem()
 	specValue := reflect.ValueOf(spec).Elem()
 	childValue := reflect.ValueOf(child).Elem()
@@ -88,12 +88,22 @@ func (spec *TargetSpec) overrideProperties(child *TargetSpec) {
 			if !src.IsNil() {
 				dst.Set(src)
 			}
-		case reflect.Slice: // for slices, append the field
+		case reflect.Slice: // for slices, append the field and check for duplicates
 			dst.Set(reflect.AppendSlice(dst, src))
+			for i := 0; i < dst.Len(); i++ {
+				v := dst.Index(i).String()
+				for j := i + 1; j < dst.Len(); j++ {
+					w := dst.Index(j).String()
+					if v == w {
+						return fmt.Errorf("duplicate value '%s' in field %s", v, field.Name)
+					}
+				}
+			}
 		default:
-			panic("unknown field type : " + kind.String())
+			return fmt.Errorf("unknown field type: %s", kind)
 		}
 	}
+	return nil
 }
 
 // load reads a target specification from the JSON in the given io.Reader. It
@@ -108,10 +118,10 @@ func (spec *TargetSpec) load(r io.Reader) error {
 }
 
 // loadFromGivenStr loads the TargetSpec from the given string that could be:
-// - targets/ directory inside the compiler sources
-// - a relative or absolute path to custom (project specific) target specification .json file;
-//   the Inherits[] could contain the files from target folder (ex. stm32f4disco)
-//   as well as path to custom files (ex. myAwesomeProject.json)
+//   - targets/ directory inside the compiler sources
+//   - a relative or absolute path to custom (project specific) target specification .json file;
+//     the Inherits[] could contain the files from target folder (ex. stm32f4disco)
+//     as well as path to custom files (ex. myAwesomeProject.json)
 func (spec *TargetSpec) loadFromGivenStr(str string) error {
 	path := ""
 	if strings.HasSuffix(str, ".json") {
@@ -141,11 +151,17 @@ func (spec *TargetSpec) resolveInherits() error {
 		if err != nil {
 			return err
 		}
-		newSpec.overrideProperties(subtarget)
+		err = newSpec.overrideProperties(subtarget)
+		if err != nil {
+			return err
+		}
 	}
 
 	// When all properties are loaded, make sure they are properly inherited.
-	newSpec.overrideProperties(spec)
+	err := newSpec.overrideProperties(spec)
+	if err != nil {
+		return err
+	}
 	*spec = *newSpec
 
 	return nil
@@ -193,11 +209,10 @@ func LoadTarget(options *Options) (*TargetSpec, error) {
 		// triples for historical reasons) have the form:
 		//   arch-vendor-os-environment
 		target := llvmarch + "-unknown-" + llvmos
-		if options.GOARCH == "arm" {
-			target += "-gnueabihf"
-		}
 		if options.GOOS == "windows" {
 			target += "-gnu"
+		} else if options.GOARCH == "arm" {
+			target += "-gnueabihf"
 		}
 		return defaultTarget(options.GOOS, options.GOARCH, target)
 	}
@@ -213,7 +228,7 @@ func LoadTarget(options *Options) (*TargetSpec, error) {
 	// it includes all parents as specified in the "inherits" key.
 	err = spec.resolveInherits()
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("%s : %w", options.Target, err)
 	}
 
 	if spec.Scheduler == "asyncify" {
@@ -302,7 +317,7 @@ func defaultTarget(goos, goarch, triple string) (*TargetSpec, error) {
 			// systems so we need separate assembly files.
 			suffix = "_windows"
 		}
-		spec.ExtraFiles = append(spec.ExtraFiles, "src/runtime/gc_"+goarch+suffix+".S")
+		spec.ExtraFiles = append(spec.ExtraFiles, "src/runtime/asm_"+goarch+suffix+".S")
 		spec.ExtraFiles = append(spec.ExtraFiles, "src/internal/task/task_stack_"+goarch+suffix+".S")
 	}
 	if goarch != runtime.GOARCH {

compileopts/target_test.go

@@ -1,7 +1,8 @@
 package compileopts
 
 import (
-	"os"
+	"errors"
+	"io/fs"
 	"reflect"
 	"testing"
 )
@@ -17,7 +18,7 @@ func TestLoadTarget(t *testing.T) {
 		t.Error("LoadTarget should have failed with non existing target")
 	}
 
-	if !os.IsNotExist(err) {
+	if !errors.Is(err, fs.ErrNotExist) {
 		t.Error("LoadTarget failed for wrong reason:", err)
 	}
 }

compiler/alias.go

@@ -16,6 +16,8 @@ import "tinygo.org/x/go-llvm"
 
 var stdlibAliases = map[string]string{
 	// crypto packages
+	"crypto/ed25519/internal/edwards25519/field.feMul":    "crypto/ed25519/internal/edwards25519/field.feMulGeneric",
+	"crypto/ed25519/internal/edwards25519/field.feSquare": "crypto/ed25519/internal/edwards25519/field.feSquareGeneric",
 	"crypto/md5.block":         "crypto/md5.blockGeneric",
 	"crypto/sha1.block":        "crypto/sha1.blockGeneric",
 	"crypto/sha1.blockAMD64":   "crypto/sha1.blockGeneric",
@@ -23,53 +25,10 @@ var stdlibAliases = map[string]string{
 	"crypto/sha512.blockAMD64": "crypto/sha512.blockGeneric",
 
 	// math package
-	"math.Asin":      "math.asin",
-	"math.Asinh":     "math.asinh",
-	"math.Acos":      "math.acos",
-	"math.Acosh":     "math.acosh",
-	"math.Atan":      "math.atan",
-	"math.Atanh":     "math.atanh",
-	"math.Atan2":     "math.atan2",
-	"math.Cbrt":      "math.cbrt",
-	"math.Ceil":      "math.ceil",
-	"math.archCeil":  "math.ceil",
-	"math.Cos":       "math.cos",
-	"math.Cosh":      "math.cosh",
-	"math.Erf":       "math.erf",
-	"math.Erfc":      "math.erfc",
-	"math.Exp":       "math.exp",
-	"math.archExp":   "math.exp",
-	"math.Expm1":     "math.expm1",
-	"math.Exp2":      "math.exp2",
-	"math.archExp2":  "math.exp2",
-	"math.Floor":     "math.floor",
-	"math.archFloor": "math.floor",
-	"math.Frexp":     "math.frexp",
-	"math.Hypot":     "math.hypot",
 	"math.archHypot": "math.hypot",
-	"math.Ldexp":     "math.ldexp",
-	"math.Log":       "math.log",
-	"math.archLog":   "math.log",
-	"math.Log1p":     "math.log1p",
-	"math.Log10":     "math.log10",
-	"math.Log2":      "math.log2",
-	"math.Max":       "math.max",
 	"math.archMax":   "math.max",
-	"math.Min":       "math.min",
 	"math.archMin":   "math.min",
-	"math.Mod":       "math.mod",
-	"math.Modf":      "math.modf",
 	"math.archModf":  "math.modf",
-	"math.Pow":       "math.pow",
-	"math.Remainder": "math.remainder",
-	"math.Sin":       "math.sin",
-	"math.Sinh":      "math.sinh",
-	"math.Sqrt":      "math.sqrt",
-	"math.archSqrt":  "math.sqrt",
-	"math.Tan":       "math.tan",
-	"math.Tanh":      "math.tanh",
-	"math.Trunc":     "math.trunc",
-	"math.archTrunc": "math.trunc",
 }
 
 // createAlias implements the function (in the builder) as a call to the alias
@@ -86,7 +45,7 @@ func (b *builder) createAlias(alias llvm.Value) {
 		pos := b.program.Fset.Position(b.fn.Pos())
 		b.SetCurrentDebugLocation(uint(pos.Line), uint(pos.Column), b.difunc, llvm.Metadata{})
 	}
-	entryBlock := llvm.AddBasicBlock(b.llvmFn, "entry")
+	entryBlock := b.ctx.AddBasicBlock(b.llvmFn, "entry")
 	b.SetInsertPointAtEnd(entryBlock)
 	if b.llvmFn.Type() != alias.Type() {
 		b.addError(b.fn.Pos(), "alias function should have the same type as aliasee "+alias.Name())

compiler/asserts.go

@@ -240,8 +240,10 @@ func (b *builder) createRuntimeAssert(assert llvm.Value, blockPrefix, assertFunc
 		}
 	}
 
+	// Put the fault block at the end of the function and the next block at the
+	// current insert position.
 	faultBlock := b.ctx.AddBasicBlock(b.llvmFn, blockPrefix+".throw")
-	nextBlock := b.ctx.AddBasicBlock(b.llvmFn, blockPrefix+".next")
+	nextBlock := b.insertBasicBlock(blockPrefix + ".next")
 	b.blockExits[b.currentBlock] = nextBlock // adjust outgoing block for phi nodes
 
 	// Now branch to the out-of-bounds or the regular block.

compiler/atomic.go

@@ -4,19 +4,17 @@ import (
 	"fmt"
 	"strings"
 
-	"golang.org/x/tools/go/ssa"
 	"tinygo.org/x/go-llvm"
 )
 
-// createAtomicOp lowers an atomic library call by lowering it as an LLVM atomic
-// operation. It returns the result of the operation and true if the call could
-// be lowered inline, and false otherwise.
-func (b *builder) createAtomicOp(call *ssa.CallCommon) (llvm.Value, bool) {
-	name := call.Value.(*ssa.Function).Name()
+// createAtomicOp lowers a sync/atomic function by lowering it as an LLVM atomic
+// operation. It returns the result of the operation, or a zero llvm.Value if
+// the result is void.
+func (b *builder) createAtomicOp(name string) llvm.Value {
 	switch name {
 	case "AddInt32", "AddInt64", "AddUint32", "AddUint64", "AddUintptr":
-		ptr := b.getValue(call.Args[0])
-		val := b.getValue(call.Args[1])
+		ptr := b.getValue(b.fn.Params[0])
+		val := b.getValue(b.fn.Params[1])
 		if strings.HasPrefix(b.Triple, "avr") {
 			// AtomicRMW does not work on AVR as intended:
 			// - There are some register allocation issues (fixed by https://reviews.llvm.org/D97127 which is not yet in a usable LLVM release)
@@ -29,17 +27,18 @@ func (b *builder) createAtomicOp(call *ssa.CallCommon) (llvm.Value, bool) {
 			}
 			oldVal := b.createCall(fn, []llvm.Value{ptr, val}, "")
 			// Return the new value, not the original value returned.
-			return b.CreateAdd(oldVal, val, ""), true
+			return b.CreateAdd(oldVal, val, "")
 		}
 		oldVal := b.CreateAtomicRMW(llvm.AtomicRMWBinOpAdd, ptr, val, llvm.AtomicOrderingSequentiallyConsistent, true)
 		// Return the new value, not the original value returned by atomicrmw.
-		return b.CreateAdd(oldVal, val, ""), true
+		return b.CreateAdd(oldVal, val, "")
 	case "SwapInt32", "SwapInt64", "SwapUint32", "SwapUint64", "SwapUintptr", "SwapPointer":
-		ptr := b.getValue(call.Args[0])
-		val := b.getValue(call.Args[1])
+		ptr := b.getValue(b.fn.Params[0])
+		val := b.getValue(b.fn.Params[1])
 		isPointer := val.Type().TypeKind() == llvm.PointerTypeKind
 		if isPointer {
 			// atomicrmw only supports integers, so cast to an integer.
+			// TODO: this is fixed in LLVM 15.
 			val = b.CreatePtrToInt(val, b.uintptrType, "")
 			ptr = b.CreateBitCast(ptr, llvm.PointerType(val.Type(), 0), "")
 		}
@@ -47,23 +46,23 @@ func (b *builder) createAtomicOp(call *ssa.CallCommon) (llvm.Value, bool) {
 		if isPointer {
 			oldVal = b.CreateIntToPtr(oldVal, b.i8ptrType, "")
 		}
-		return oldVal, true
+		return oldVal
 	case "CompareAndSwapInt32", "CompareAndSwapInt64", "CompareAndSwapUint32", "CompareAndSwapUint64", "CompareAndSwapUintptr", "CompareAndSwapPointer":
-		ptr := b.getValue(call.Args[0])
-		old := b.getValue(call.Args[1])
-		newVal := b.getValue(call.Args[2])
+		ptr := b.getValue(b.fn.Params[0])
+		old := b.getValue(b.fn.Params[1])
+		newVal := b.getValue(b.fn.Params[2])
 		tuple := b.CreateAtomicCmpXchg(ptr, old, newVal, llvm.AtomicOrderingSequentiallyConsistent, llvm.AtomicOrderingSequentiallyConsistent, true)
 		swapped := b.CreateExtractValue(tuple, 1, "")
-		return swapped, true
+		return swapped
 	case "LoadInt32", "LoadInt64", "LoadUint32", "LoadUint64", "LoadUintptr", "LoadPointer":
-		ptr := b.getValue(call.Args[0])
+		ptr := b.getValue(b.fn.Params[0])
 		val := b.CreateLoad(ptr, "")
 		val.SetOrdering(llvm.AtomicOrderingSequentiallyConsistent)
 		val.SetAlignment(b.targetData.PrefTypeAlignment(val.Type())) // required
-		return val, true
+		return val
 	case "StoreInt32", "StoreInt64", "StoreUint32", "StoreUint64", "StoreUintptr", "StorePointer":
-		ptr := b.getValue(call.Args[0])
-		val := b.getValue(call.Args[1])
+		ptr := b.getValue(b.fn.Params[0])
+		val := b.getValue(b.fn.Params[1])
 		if strings.HasPrefix(b.Triple, "avr") {
 			// SelectionDAGBuilder is currently missing the "are unaligned atomics allowed" check for stores.
 			vType := val.Type()
@@ -79,13 +78,15 @@ func (b *builder) createAtomicOp(call *ssa.CallCommon) (llvm.Value, bool) {
 			if fn.IsNil() {
 				fn = llvm.AddFunction(b.mod, name, llvm.FunctionType(vType, []llvm.Type{ptr.Type(), vType, b.uintptrType}, false))
 			}
-			return b.createCall(fn, []llvm.Value{ptr, val, llvm.ConstInt(b.uintptrType, 5, false)}, ""), true
+			b.createCall(fn, []llvm.Value{ptr, val, llvm.ConstInt(b.uintptrType, 5, false)}, "")
+			return llvm.Value{}
 		}
 		store := b.CreateStore(val, ptr)
 		store.SetOrdering(llvm.AtomicOrderingSequentiallyConsistent)
 		store.SetAlignment(b.targetData.PrefTypeAlignment(val.Type())) // required
-		return store, true
+		return llvm.Value{}
 	default:
-		return llvm.Value{}, false
+		b.addError(b.fn.Pos(), "unknown atomic operation: "+b.fn.Name())
+		return llvm.Value{}
 	}
 }

compiler/calls.go

@@ -33,17 +33,36 @@ const (
 	paramIsDeferenceableOrNull = 1 << iota
 )
 
-// createCall creates a new call to runtime.<fnName> with the given arguments.
-func (b *builder) createRuntimeCall(fnName string, args []llvm.Value, name string) llvm.Value {
+// createRuntimeCallCommon creates a runtime call. Use createRuntimeCall or
+// createRuntimeInvoke instead.
+func (b *builder) createRuntimeCallCommon(fnName string, args []llvm.Value, name string, isInvoke bool) llvm.Value {
 	fn := b.program.ImportedPackage("runtime").Members[fnName].(*ssa.Function)
 	llvmFn := b.getFunction(fn)
 	if llvmFn.IsNil() {
 		panic("trying to call non-existent function: " + fn.RelString(nil))
 	}
 	args = append(args, llvm.Undef(b.i8ptrType)) // unused context parameter
+	if isInvoke {
+		return b.createInvoke(llvmFn, args, name)
+	}
 	return b.createCall(llvmFn, args, name)
 }
 
+// createRuntimeCall creates a new call to runtime.<fnName> with the given
+// arguments.
+func (b *builder) createRuntimeCall(fnName string, args []llvm.Value, name string) llvm.Value {
+	return b.createRuntimeCallCommon(fnName, args, name, false)
+}
+
+// createRuntimeInvoke creates a new call to runtime.<fnName> with the given
+// arguments. If the runtime call panics, control flow is diverted to the
+// landing pad block.
+// Note that "invoke" here is meant in the LLVM sense (a call that can
+// panic/throw), not in the Go sense (an interface method call).
+func (b *builder) createRuntimeInvoke(fnName string, args []llvm.Value, name string) llvm.Value {
+	return b.createRuntimeCallCommon(fnName, args, name, true)
+}
+
 // createCall creates a call to the given function with the arguments possibly
 // expanded.
 func (b *builder) createCall(fn llvm.Value, args []llvm.Value, name string) llvm.Value {
@@ -55,6 +74,15 @@ func (b *builder) createCall(fn llvm.Value, args []llvm.Value, name string) llvm
 	return b.CreateCall(fn, expanded, name)
 }
 
+// createInvoke is like createCall but continues execution at the landing pad if
+// the call resulted in a panic.
+func (b *builder) createInvoke(fn llvm.Value, args []llvm.Value, name string) llvm.Value {
+	if b.hasDeferFrame() {
+		b.createInvokeCheckpoint()
+	}
+	return b.createCall(fn, args, name)
+}
+
 // Expand an argument type to a list that can be used in a function call
 // parameter list.
 func (c *compilerContext) expandFormalParamType(t llvm.Type, name string, goType types.Type) []paramInfo {

compiler/compiler.go

@@ -18,13 +18,10 @@ import (
 	"github.com/tinygo-org/tinygo/compiler/llvmutil"
 	"github.com/tinygo-org/tinygo/loader"
 	"golang.org/x/tools/go/ssa"
+	"golang.org/x/tools/go/types/typeutil"
 	"tinygo.org/x/go-llvm"
 )
 
-var typeParamUnderlyingType = func(t types.Type) types.Type {
-	return t
-}
-
 func init() {
 	llvm.InitializeAllTargets()
 	llvm.InitializeAllTargetMCs()
@@ -70,7 +67,7 @@ type compilerContext struct {
 	cu               llvm.Metadata
 	difiles          map[string]llvm.Metadata
 	ditypes          map[types.Type]llvm.Metadata
-	llvmTypes        map[types.Type]llvm.Type
+	llvmTypes        typeutil.Map
 	machine          llvm.TargetMachine
 	targetData       llvm.TargetData
 	intType          llvm.Type
@@ -95,7 +92,6 @@ func newCompilerContext(moduleName string, machine llvm.TargetMachine, config *C
 		DumpSSA:     dumpSSA,
 		difiles:     make(map[string]llvm.Metadata),
 		ditypes:     make(map[types.Type]llvm.Metadata),
-		llvmTypes:   make(map[types.Type]llvm.Type),
 		machine:     machine,
 		targetData:  machine.CreateTargetData(),
 		astComments: map[string]*ast.CommentGroup{},
@@ -143,6 +139,8 @@ type builder struct {
 	currentBlock      *ssa.BasicBlock
 	phis              []phiNode
 	deferPtr          llvm.Value
+	deferFrame        llvm.Value
+	landingpad        llvm.BasicBlock
 	difunc            llvm.Metadata
 	dilocals          map[*types.Var]llvm.Metadata
 	initInlinedAt     llvm.Metadata            // fake inlinedAt position
@@ -327,19 +325,22 @@ func (c *compilerContext) getLLVMRuntimeType(name string) llvm.Type {
 // important for named struct types (which should only be created once).
 func (c *compilerContext) getLLVMType(goType types.Type) llvm.Type {
 	// Try to load the LLVM type from the cache.
-	if t, ok := c.llvmTypes[goType]; ok {
-		return t
+	// Note: *types.Named isn't unique when working with generics.
+	// See https://github.com/golang/go/issues/53914
+	// This is the reason for using typeutil.Map to lookup LLVM types for Go types.
+	ival := c.llvmTypes.At(goType)
+	if ival != nil {
+		return ival.(llvm.Type)
 	}
 	// Not already created, so adding this type to the cache.
 	llvmType := c.makeLLVMType(goType)
-	c.llvmTypes[goType] = llvmType
+	c.llvmTypes.Set(goType, llvmType)
 	return llvmType
 }
 
 // makeLLVMType creates a LLVM type for a Go type. Don't call this, use
 // getLLVMType instead.
 func (c *compilerContext) makeLLVMType(goType types.Type) llvm.Type {
-	goType = typeParamUnderlyingType(goType)
 	switch typ := goType.(type) {
 	case *types.Array:
 		elemType := c.getLLVMType(typ.Elem())
@@ -387,9 +388,9 @@ func (c *compilerContext) makeLLVMType(goType types.Type) llvm.Type {
 			// in LLVM IR, named structs are implemented as named structs in
 			// LLVM. This is because it is otherwise impossible to create
 			// self-referencing types such as linked lists.
-			llvmName := typ.Obj().Pkg().Path() + "." + typ.Obj().Name()
+			llvmName := typ.String()
 			llvmType := c.ctx.StructCreateNamed(llvmName)
-			c.llvmTypes[goType] = llvmType // avoid infinite recursion
+			c.llvmTypes.Set(goType, llvmType) // avoid infinite recursion
 			underlying := c.getLLVMType(st)
 			llvmType.StructSetBody(underlying.StructElementTypes(), false)
 			return llvmType
@@ -414,6 +415,8 @@ func (c *compilerContext) makeLLVMType(goType types.Type) llvm.Type {
 			members[i] = c.getLLVMType(typ.Field(i).Type())
 		}
 		return c.ctx.StructType(members, false)
+	case *types.TypeParam:
+		return c.getLLVMType(typ.Underlying())
 	case *types.Tuple:
 		members := make([]llvm.Type, typ.Len())
 		for i := 0; i < typ.Len(); i++ {
@@ -449,7 +452,6 @@ func (c *compilerContext) getDIType(typ types.Type) llvm.Metadata {
 // createDIType creates a new DWARF type. Don't call this function directly,
 // call getDIType instead.
 func (c *compilerContext) createDIType(typ types.Type) llvm.Metadata {
-	typ = typeParamUnderlyingType(typ)
 	llvmType := c.getLLVMType(typ)
 	sizeInBytes := c.targetData.TypeAllocSize(llvmType)
 	switch typ := typ.(type) {
@@ -613,6 +615,8 @@ func (c *compilerContext) createDIType(typ types.Type) llvm.Metadata {
 		})
 		temporaryMDNode.ReplaceAllUsesWith(md)
 		return md
+	case *types.TypeParam:
+		return c.getDIType(typ.Underlying())
 	default:
 		panic("unknown type while generating DWARF debug type: " + typ.String())
 	}
@@ -682,7 +686,7 @@ func (b *builder) getLocalVariable(variable *types.Var) llvm.Metadata {
 				Name:           param.Name(),
 				File:           b.getDIFile(pos.Filename),
 				Line:           pos.Line,
-				Type:           b.getDIType(variable.Type()),
+				Type:           b.getDIType(param.Type()),
 				AlwaysPreserve: true,
 				ArgNo:          i + 1,
 			})
@@ -780,10 +784,25 @@ func (c *compilerContext) createPackage(irbuilder llvm.Builder, pkg *ssa.Package
 		member := pkg.Members[name]
 		switch member := member.(type) {
 		case *ssa.Function:
+			if member.Synthetic == "generic function" {
+				// Do not try to build generic (non-instantiated) functions.
+				continue
+			}
 			// Create the function definition.
 			b := newBuilder(c, irbuilder, member)
+			if _, ok := mathToLLVMMapping[member.RelString(nil)]; ok {
+				// The body of this function (if there is one) is ignored and
+				// replaced with a LLVM intrinsic call.
+				b.defineMathOp()
+				continue
+			}
 			if member.Blocks == nil {
-				continue // external function
+				// Try to define this as an intrinsic function.
+				b.defineIntrinsicFunction()
+				// It might not be an intrinsic function but simply an external
+				// function (defined via //go:linkname). Leave it undefined in
+				// that case.
+				continue
 			}
 			b.createFunction()
 		case *ssa.Type:
@@ -1007,10 +1026,11 @@ func (c *compilerContext) getEmbedFileString(file *loader.EmbedFile) llvm.Value
 	return llvm.ConstNamedStruct(c.getLLVMRuntimeType("_string"), []llvm.Value{strPtr, strLen})
 }
 
-// createFunction builds the LLVM IR implementation for this function. The
-// function must not yet be defined, otherwise this function will create a
-// diagnostic.
-func (b *builder) createFunction() {
+// Start defining a function so that it can be filled with instructions: load
+// parameters, create basic blocks, and set up debug information.
+// This is separated out from createFunction() so that it is also usable to
+// define compiler intrinsics like the atomic operations in sync/atomic.
+func (b *builder) createFunctionStart(intrinsic bool) {
 	if b.DumpSSA {
 		fmt.Printf("\nfunc %s:\n", b.fn)
 	}
@@ -1023,9 +1043,17 @@ func (b *builder) createFunction() {
 		b.addError(b.fn.Pos(), errValue)
 		return
 	}
+
 	b.addStandardDefinedAttributes(b.llvmFn)
 	if !b.info.exported {
-		b.llvmFn.SetVisibility(llvm.HiddenVisibility)
+		// Do not set visibility for local linkage (internal or private).
+		// Otherwise a "local linkage requires default visibility"
+		// assertion error in llvm-project/llvm/include/llvm/IR/GlobalValue.h:236
+		// is thrown.
+		if b.llvmFn.Linkage() != llvm.InternalLinkage &&
+			b.llvmFn.Linkage() != llvm.PrivateLinkage {
+			b.llvmFn.SetVisibility(llvm.HiddenVisibility)
+		}
 		b.llvmFn.SetUnnamedAddr(true)
 	}
 	if b.info.section != "" {
@@ -1075,12 +1103,21 @@ func (b *builder) createFunction() {
 	}
 
 	// Pre-create all basic blocks in the function.
-	for _, block := range b.fn.DomPreorder() {
-		llvmBlock := b.ctx.AddBasicBlock(b.llvmFn, block.Comment)
-		b.blockEntries[block] = llvmBlock
-		b.blockExits[block] = llvmBlock
+	var entryBlock llvm.BasicBlock
+	if intrinsic {
+		// This function isn't defined in Go SSA. It is probably a compiler
+		// intrinsic (like an atomic operation). Create the entry block
+		// manually.
+		entryBlock = b.ctx.AddBasicBlock(b.llvmFn, "entry")
+	} else {
+		for _, block := range b.fn.DomPreorder() {
+			llvmBlock := b.ctx.AddBasicBlock(b.llvmFn, block.Comment)
+			b.blockEntries[block] = llvmBlock
+			b.blockExits[block] = llvmBlock
+		}
+		// Normal functions have an entry block.
+		entryBlock = b.blockEntries[b.fn.Blocks[0]]
 	}
-	entryBlock := b.blockEntries[b.fn.Blocks[0]]
 	b.SetInsertPointAtEnd(entryBlock)
 
 	if b.fn.Synthetic == "package initializer" {
@@ -1155,6 +1192,13 @@ func (b *builder) createFunction() {
 		// them.
 		b.deferInitFunc()
 	}
+}
+
+// createFunction builds the LLVM IR implementation for this function. The
+// function must not yet be defined, otherwise this function will create a
+// diagnostic.
+func (b *builder) createFunction() {
+	b.createFunctionStart(false)
 
 	// Fill blocks with instructions.
 	for _, block := range b.fn.DomPreorder() {
@@ -1202,6 +1246,12 @@ func (b *builder) createFunction() {
 		}
 	}
 
+	if b.hasDeferFrame() {
+		// Create the landing pad block, where execution continues after a
+		// panic.
+		b.createLandingPad()
+	}
+
 	// Resolve phi nodes
 	for _, phi := range b.phis {
 		block := phi.ssa.Block()
@@ -1227,6 +1277,7 @@ func (b *builder) createFunction() {
 	// Create anonymous functions (closures etc.).
 	for _, sub := range b.fn.AnonFuncs {
 		b := newBuilder(b.compilerContext, b.Builder, sub)
+		b.llvmFn.SetLinkage(llvm.InternalLinkage)
 		b.createFunction()
 	}
 }
@@ -1329,9 +1380,12 @@ func (b *builder) createInstruction(instr ssa.Instruction) {
 		b.createMapUpdate(mapType.Key(), m, key, value, instr.Pos())
 	case *ssa.Panic:
 		value := b.getValue(instr.X)
-		b.createRuntimeCall("_panic", []llvm.Value{value}, "")
+		b.createRuntimeInvoke("_panic", []llvm.Value{value}, "")
 		b.CreateUnreachable()
 	case *ssa.Return:
+		if b.hasDeferFrame() {
+			b.createRuntimeCall("destroyDeferFrame", []llvm.Value{b.deferFrame}, "")
+		}
 		if len(instr.Results) == 0 {
 			b.CreateRetVoid()
 		} else if len(instr.Results) == 1 {
@@ -1508,6 +1562,12 @@ func (b *builder) createBuiltin(argTypes []types.Type, argValues []llvm.Value, c
 			case *types.Pointer:
 				ptrValue := b.CreatePtrToInt(value, b.uintptrType, "")
 				b.createRuntimeCall("printptr", []llvm.Value{ptrValue}, "")
+			case *types.Slice:
+				bufptr := b.CreateExtractValue(value, 0, "")
+				buflen := b.CreateExtractValue(value, 1, "")
+				bufcap := b.CreateExtractValue(value, 2, "")
+				ptrValue := b.CreatePtrToInt(bufptr, b.uintptrType, "")
+				b.createRuntimeCall("printslice", []llvm.Value{ptrValue, buflen, bufcap}, "")
 			default:
 				return llvm.Value{}, b.makeError(pos, "unknown arg type: "+typ.String())
 			}
@@ -1520,7 +1580,13 @@ func (b *builder) createBuiltin(argTypes []types.Type, argValues []llvm.Value, c
 		cplx := argValues[0]
 		return b.CreateExtractValue(cplx, 0, "real"), nil
 	case "recover":
-		return b.createRuntimeCall("_recover", nil, ""), nil
+		useParentFrame := uint64(0)
+		if b.hasDeferFrame() {
+			// recover() should return the panic value of the parent function,
+			// not of the current function.
+			useParentFrame = 1
+		}
+		return b.createRuntimeCall("_recover", []llvm.Value{llvm.ConstInt(b.ctx.Int1Type(), useParentFrame, false)}, ""), nil
 	case "ssa:wrapnilchk":
 		// TODO: do an actual nil check?
 		return argValues[0], nil
@@ -1532,6 +1598,20 @@ func (b *builder) createBuiltin(argTypes []types.Type, argValues []llvm.Value, c
 		ptr := argValues[0]
 		len := argValues[1]
 		return b.CreateGEP(ptr, []llvm.Value{len}, ""), nil
+	case "Alignof": // unsafe.Alignof
+		align := b.targetData.ABITypeAlignment(argValues[0].Type())
+		return llvm.ConstInt(b.uintptrType, uint64(align), false), nil
+	case "Offsetof": // unsafe.Offsetof
+		// This builtin is a bit harder to implement and may need a bit of
+		// refactoring to work (it may be easier to implement if we have access
+		// to the underlying Go SSA instruction). It is also rarely used: it
+		// only applies in generic code and unsafe.Offsetof isn't very commonly
+		// used anyway.
+		// In other words, postpone it to some other day.
+		return llvm.Value{}, b.makeError(pos, "todo: unsafe.Offsetof")
+	case "Sizeof": // unsafe.Sizeof
+		size := b.targetData.TypeAllocSize(argValues[0].Type())
+		return llvm.ConstInt(b.uintptrType, size, false), nil
 	case "Slice": // unsafe.Slice
 		// This creates a slice from a pointer and a length.
 		// Note that the exception mentioned in the documentation (if the
@@ -1580,15 +1660,6 @@ func (b *builder) createFunctionCall(instr *ssa.CallCommon) (llvm.Value, error)
 		// applied) function call. If it is anonymous, it may be a closure.
 		name := fn.RelString(nil)
 		switch {
-		case name == "runtime.memcpy" || name == "runtime.memmove" || name == "reflect.memcpy":
-			return b.createMemoryCopyCall(fn, instr.Args)
-		case name == "runtime.memzero":
-			return b.createMemoryZeroCall(instr.Args)
-		case name == "math.Ceil" || name == "math.Floor" || name == "math.Sqrt" || name == "math.Trunc":
-			result, ok := b.createMathOp(instr)
-			if ok {
-				return result, nil
-			}
 		case name == "device.Asm" || name == "device/arm.Asm" || name == "device/arm64.Asm" || name == "device/avr.Asm" || name == "device/riscv.Asm":
 			return b.createInlineAsm(instr.Args)
 		case name == "device.AsmFull" || name == "device/arm.AsmFull" || name == "device/arm64.AsmFull" || name == "device/avr.AsmFull" || name == "device/riscv.AsmFull":
@@ -1603,18 +1674,12 @@ func (b *builder) createFunctionCall(instr *ssa.CallCommon) (llvm.Value, error)
 			return b.createSyscall(instr)
 		case strings.HasPrefix(name, "syscall.rawSyscallNoError"):
 			return b.createRawSyscallNoError(instr)
-		case strings.HasPrefix(name, "runtime/volatile.Load"):
-			return b.createVolatileLoad(instr)
-		case strings.HasPrefix(name, "runtime/volatile.Store"):
-			return b.createVolatileStore(instr)
-		case strings.HasPrefix(name, "sync/atomic."):
-			val, ok := b.createAtomicOp(instr)
-			if ok {
-				// This call could be lowered as an atomic operation.
-				return val, nil
+		case name == "runtime.supportsRecover":
+			supportsRecover := uint64(0)
+			if b.supportsRecover() {
+				supportsRecover = 1
 			}
-			// This call couldn't be lowered as an atomic operation, it's
-			// probably something else. Continue as usual.
+			return llvm.ConstInt(b.ctx.Int1Type(), supportsRecover, false), nil
 		case name == "runtime/interrupt.New":
 			return b.createInterruptGlobal(instr)
 		}
@@ -1677,7 +1742,7 @@ func (b *builder) createFunctionCall(instr *ssa.CallCommon) (llvm.Value, error)
 		params = append(params, context)
 	}
 
-	return b.createCall(callee, params, ""), nil
+	return b.createInvoke(callee, params, ""), nil
 }
 
 // getValue returns the LLVM value of a constant, function value, global, or

compiler/compiler_go118.go

@@ -1,18 +0,0 @@
-//go:build go1.18
-// +build go1.18
-
-package compiler
-
-// Workaround for Go 1.17 support. Should be removed once we drop Go 1.17
-// support.
-
-import "go/types"
-
-func init() {
-	typeParamUnderlyingType = func(t types.Type) types.Type {
-		if t, ok := t.(*types.TypeParam); ok {
-			return t.Underlying()
-		}
-		return t
-	}
-}

compiler/compiler_test.go

@@ -3,13 +3,12 @@ package compiler
 import (
 	"flag"
 	"go/types"
-	"io/ioutil"
+	"os"
 	"strconv"
 	"strings"
 	"testing"
 
 	"github.com/tinygo-org/tinygo/compileopts"
-	"github.com/tinygo-org/tinygo/goenv"
 	"github.com/tinygo-org/tinygo/loader"
 	"tinygo.org/x/go-llvm"
 )
@@ -28,18 +27,6 @@ type testCase struct {
 func TestCompiler(t *testing.T) {
 	t.Parallel()
 
-	// Determine LLVM version.
-	llvmMajor, err := strconv.Atoi(strings.SplitN(llvm.Version, ".", 2)[0])
-	if err != nil {
-		t.Fatal("could not parse LLVM version:", llvm.Version)
-	}
-
-	// Determine Go minor version (e.g. 16 in go1.16.3).
-	_, goMinor, err := goenv.GetGorootVersion(goenv.Get("GOROOT"))
-	if err != nil {
-		t.Fatal("could not read Go version:", err)
-	}
-
 	// Determine which tests to run, depending on the Go and LLVM versions.
 	tests := []testCase{
 		{"basic.go", "", ""},
@@ -49,21 +36,13 @@ func TestCompiler(t *testing.T) {
 		{"float.go", "", ""},
 		{"interface.go", "", ""},
 		{"func.go", "", ""},
+		{"defer.go", "cortex-m-qemu", ""},
 		{"pragma.go", "", ""},
 		{"goroutine.go", "wasm", "asyncify"},
 		{"goroutine.go", "cortex-m-qemu", "tasks"},
 		{"channel.go", "", ""},
-		{"intrinsics.go", "cortex-m-qemu", ""},
-		{"intrinsics.go", "wasm", ""},
 		{"gc.go", "", ""},
 	}
-	if llvmMajor >= 12 {
-		tests = append(tests, testCase{"intrinsics.go", "cortex-m-qemu", ""})
-		tests = append(tests, testCase{"intrinsics.go", "wasm", ""})
-	}
-	if goMinor >= 17 {
-		tests = append(tests, testCase{"go1.17.go", "", ""})
-	}
 
 	for _, tc := range tests {
 		name := tc.file
@@ -93,13 +72,14 @@ func TestCompiler(t *testing.T) {
 			}
 			compilerConfig := &Config{
 				Triple:             config.Triple(),
+				Features:           config.Features(),
 				GOOS:               config.GOOS(),
 				GOARCH:             config.GOARCH(),
 				CodeModel:          config.CodeModel(),
 				RelocationModel:    config.RelocationModel(),
 				Scheduler:          config.Scheduler(),
 				AutomaticStackSize: config.AutomaticStackSize(),
-				DefaultStackSize:   config.Target.DefaultStackSize,
+				DefaultStackSize:   config.StackSize(),
 				NeedsStackObjects:  config.NeedsStackObjects(),
 			}
 			machine, err := NewTargetMachine(compilerConfig)
@@ -157,14 +137,14 @@ func TestCompiler(t *testing.T) {
 
 			// Update test if needed. Do not check the result.
 			if *flagUpdate {
-				err := ioutil.WriteFile(outPath, []byte(mod.String()), 0666)
+				err := os.WriteFile(outPath, []byte(mod.String()), 0666)
 				if err != nil {
 					t.Error("failed to write updated output file:", err)
 				}
 				return
 			}
 
-			expected, err := ioutil.ReadFile(outPath)
+			expected, err := os.ReadFile(outPath)
 			if err != nil {
 				t.Fatal("failed to read golden file:", err)
 			}

compiler/defer.go

@@ -15,12 +15,39 @@ package compiler
 
 import (
 	"go/types"
+	"strconv"
 
 	"github.com/tinygo-org/tinygo/compiler/llvmutil"
 	"golang.org/x/tools/go/ssa"
 	"tinygo.org/x/go-llvm"
 )
 
+// supportsRecover returns whether the compiler supports the recover() builtin
+// for the current architecture.
+func (b *builder) supportsRecover() bool {
+	switch b.archFamily() {
+	case "wasm32":
+		// Probably needs to be implemented using the exception handling
+		// proposal of WebAssembly:
+		// https://github.com/WebAssembly/exception-handling
+		return false
+	case "riscv64", "xtensa":
+		// TODO: add support for these architectures
+		return false
+	default:
+		return true
+	}
+}
+
+// hasDeferFrame returns whether the current function needs to catch panics and
+// run defers.
+func (b *builder) hasDeferFrame() bool {
+	if b.fn.Recover == nil {
+		return false
+	}
+	return b.supportsRecover()
+}
+
 // deferInitFunc sets up this function for future deferred calls. It must be
 // called from within the entry block when this function contains deferred
 // calls.
@@ -36,6 +63,151 @@ func (b *builder) deferInitFunc() {
 	deferType := llvm.PointerType(b.getLLVMRuntimeType("_defer"), 0)
 	b.deferPtr = b.CreateAlloca(deferType, "deferPtr")
 	b.CreateStore(llvm.ConstPointerNull(deferType), b.deferPtr)
+
+	if b.hasDeferFrame() {
+		// Set up the defer frame with the current stack pointer.
+		// This assumes that the stack pointer doesn't move outside of the
+		// function prologue/epilogue (an invariant maintained by TinyGo but
+		// possibly broken by the C alloca function).
+		// The frame pointer is _not_ saved, because it is marked as clobbered
+		// in the setjmp-like inline assembly.
+		deferFrameType := b.getLLVMRuntimeType("deferFrame")
+		b.deferFrame = b.CreateAlloca(deferFrameType, "deferframe.buf")
+		stackPointer := b.readStackPointer()
+		b.createRuntimeCall("setupDeferFrame", []llvm.Value{b.deferFrame, stackPointer}, "")
+
+		// Create the landing pad block, which is where control transfers after
+		// a panic.
+		b.landingpad = b.ctx.AddBasicBlock(b.llvmFn, "lpad")
+	}
+}
+
+// createLandingPad fills in the landing pad block. This block runs the deferred
+// functions and returns (by jumping to the recover block). If the function is
+// still panicking after the defers are run, the panic will be re-raised in
+// destroyDeferFrame.
+func (b *builder) createLandingPad() {
+	b.SetInsertPointAtEnd(b.landingpad)
+
+	// Add debug info, if needed.
+	// The location used is the closing bracket of the function.
+	if b.Debug {
+		pos := b.program.Fset.Position(b.fn.Syntax().End())
+		b.SetCurrentDebugLocation(uint(pos.Line), uint(pos.Column), b.difunc, llvm.Metadata{})
+	}
+
+	b.createRunDefers()
+
+	// Continue at the 'recover' block, which returns to the parent in an
+	// appropriate way.
+	b.CreateBr(b.blockEntries[b.fn.Recover])
+}
+
+// createInvokeCheckpoint saves the function state at the given point, to
+// continue at the landing pad if a panic happened. This is implemented using a
+// setjmp-like construct.
+func (b *builder) createInvokeCheckpoint() {
+	// Construct inline assembly equivalents of setjmp.
+	// The assembly works as follows:
+	//   * All registers (both callee-saved and caller saved) are clobbered
+	//     after the inline assembly returns.
+	//   * The assembly stores the address just past the end of the assembly
+	//     into the jump buffer.
+	//   * The return value (eax, rax, r0, etc) is set to zero in the inline
+	//     assembly but set to an unspecified non-zero value when jumping using
+	//     a longjmp.
+	var asmString, constraints string
+	resultType := b.uintptrType
+	switch b.archFamily() {
+	case "i386":
+		asmString = `
+xorl %eax, %eax
+movl $$1f, 4(%ebx)
+1:`
+		constraints = "={eax},{ebx},~{ebx},~{ecx},~{edx},~{esi},~{edi},~{ebp},~{xmm0},~{xmm1},~{xmm2},~{xmm3},~{xmm4},~{xmm5},~{xmm6},~{xmm7},~{fpsr},~{fpcr},~{flags},~{dirflag},~{memory}"
+		// This doesn't include the floating point stack because TinyGo uses
+		// newer floating point instructions.
+	case "x86_64":
+		asmString = `
+leaq 1f(%rip), %rax
+movq %rax, 8(%rbx)
+xorq %rax, %rax
+1:`
+		constraints = "={rax},{rbx},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{xmm0},~{xmm1},~{xmm2},~{xmm3},~{xmm4},~{xmm5},~{xmm6},~{xmm7},~{xmm8},~{xmm9},~{xmm10},~{xmm11},~{xmm12},~{xmm13},~{xmm14},~{xmm15},~{xmm16},~{xmm17},~{xmm18},~{xmm19},~{xmm20},~{xmm21},~{xmm22},~{xmm23},~{xmm24},~{xmm25},~{xmm26},~{xmm27},~{xmm28},~{xmm29},~{xmm30},~{xmm31},~{fpsr},~{fpcr},~{flags},~{dirflag},~{memory}"
+		// This list doesn't include AVX/AVX512 registers because TinyGo
+		// doesn't currently enable support for AVX instructions.
+	case "arm":
+		// Note: the following assembly takes into account that the PC is
+		// always 4 bytes ahead on ARM. The PC that is stored always points
+		// to the instruction just after the assembly fragment so that
+		// tinygo_longjmp lands at the correct instruction.
+		if b.isThumb() {
+			// Instructions are 2 bytes in size.
+			asmString = `
+movs r0, #0
+mov r2, pc
+str r2, [r1, #4]`
+		} else {
+			// Instructions are 4 bytes in size.
+			asmString = `
+str pc, [r1, #4]
+movs r0, #0`
+		}
+		constraints = "={r0},{r1},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{lr},~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{cpsr},~{memory}"
+	case "aarch64":
+		asmString = `
+adr x2, 1f
+str x2, [x1, #8]
+mov x0, #0
+1:
+`
+		constraints = "={x0},{x1},~{x1},~{x2},~{x3},~{x4},~{x5},~{x6},~{x7},~{x8},~{x9},~{x10},~{x11},~{x12},~{x13},~{x14},~{x15},~{x16},~{x17},~{x19},~{x20},~{x21},~{x22},~{x23},~{x24},~{x25},~{x26},~{x27},~{x28},~{lr},~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{q16},~{q17},~{q18},~{q19},~{q20},~{q21},~{q22},~{q23},~{q24},~{q25},~{q26},~{q27},~{q28},~{q29},~{q30},~{nzcv},~{ffr},~{vg},~{memory}"
+		if b.GOOS != "darwin" {
+			// These registers cause the following warning when compiling for
+			// MacOS:
+			//     warning: inline asm clobber list contains reserved registers:
+			//     X18, FP
+			//     Reserved registers on the clobber list may not be preserved
+			//     across the asm statement, and clobbering them may lead to
+			//     undefined behaviour.
+			constraints += ",~{x18},~{fp}"
+		}
+		// TODO: SVE registers, which we don't use in TinyGo at the moment.
+	case "avr":
+		// Note: the Y register (R28:R29) is a fixed register and therefore
+		// needs to be saved manually. TODO: do this only once per function with
+		// a defer frame, not for every call.
+		resultType = b.ctx.Int8Type()
+		asmString = `
+ldi r24, pm_lo8(1f)
+ldi r25, pm_hi8(1f)
+std z+2, r24
+std z+3, r25
+std z+4, r28
+std z+5, r29
+ldi r24, 0
+1:`
+		constraints = "={r24},z,~{r0},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{r16},~{r17},~{r18},~{r19},~{r20},~{r21},~{r22},~{r23},~{r25},~{r26},~{r27}"
+	case "riscv32":
+		asmString = `
+la a2, 1f
+sw a2, 4(a1)
+li a0, 0
+1:`
+		constraints = "={a0},{a1},~{a1},~{a2},~{a3},~{a4},~{a5},~{a6},~{a7},~{s0},~{s1},~{s2},~{s3},~{s4},~{s5},~{s6},~{s7},~{s8},~{s9},~{s10},~{s11},~{t0},~{t1},~{t2},~{t3},~{t4},~{t5},~{t6},~{ra},~{f0},~{f1},~{f2},~{f3},~{f4},~{f5},~{f6},~{f7},~{f8},~{f9},~{f10},~{f11},~{f12},~{f13},~{f14},~{f15},~{f16},~{f17},~{f18},~{f19},~{f20},~{f21},~{f22},~{f23},~{f24},~{f25},~{f26},~{f27},~{f28},~{f29},~{f30},~{f31},~{memory}"
+	default:
+		// This case should have been handled by b.supportsRecover().
+		b.addError(b.fn.Pos(), "unknown architecture for defer: "+b.archFamily())
+	}
+	asmType := llvm.FunctionType(resultType, []llvm.Type{b.deferFrame.Type()}, false)
+	asm := llvm.InlineAsm(asmType, asmString, constraints, false, false, 0, false)
+	result := b.CreateCall(asm, []llvm.Value{b.deferFrame}, "setjmp")
+	result.AddCallSiteAttribute(-1, b.ctx.CreateEnumAttribute(llvm.AttributeKindID("returns_twice"), 0))
+	isZero := b.CreateICmp(llvm.IntEQ, result, llvm.ConstInt(resultType, 0, false), "setjmp.result")
+	continueBB := b.insertBasicBlock("")
+	b.CreateCondBr(isZero, continueBB, b.landingpad)
+	b.SetInsertPointAtEnd(continueBB)
+	b.blockExits[b.currentBlock] = continueBB
 }
 
 // isInLoop checks if there is a path from a basic block to itself.
@@ -201,30 +373,31 @@ func (b *builder) createDefer(instr *ssa.Defer) {
 		}
 	}
 
-	// Make a struct out of the collected values to put in the defer frame.
-	deferFrameType := b.ctx.StructType(valueTypes, false)
-	deferFrame := llvm.ConstNull(deferFrameType)
+	// Make a struct out of the collected values to put in the deferred call
+	// struct.
+	deferredCallType := b.ctx.StructType(valueTypes, false)
+	deferredCall := llvm.ConstNull(deferredCallType)
 	for i, value := range values {
-		deferFrame = b.CreateInsertValue(deferFrame, value, i, "")
+		deferredCall = b.CreateInsertValue(deferredCall, value, i, "")
 	}
 
 	// Put this struct in an allocation.
 	var alloca llvm.Value
 	if !isInLoop(instr.Block()) {
 		// This can safely use a stack allocation.
-		alloca = llvmutil.CreateEntryBlockAlloca(b.Builder, deferFrameType, "defer.alloca")
+		alloca = llvmutil.CreateEntryBlockAlloca(b.Builder, deferredCallType, "defer.alloca")
 	} else {
 		// This may be hit a variable number of times, so use a heap allocation.
-		size := b.targetData.TypeAllocSize(deferFrameType)
+		size := b.targetData.TypeAllocSize(deferredCallType)
 		sizeValue := llvm.ConstInt(b.uintptrType, size, false)
 		nilPtr := llvm.ConstNull(b.i8ptrType)
 		allocCall := b.createRuntimeCall("alloc", []llvm.Value{sizeValue, nilPtr}, "defer.alloc.call")
-		alloca = b.CreateBitCast(allocCall, llvm.PointerType(deferFrameType, 0), "defer.alloc")
+		alloca = b.CreateBitCast(allocCall, llvm.PointerType(deferredCallType, 0), "defer.alloc")
 	}
 	if b.NeedsStackObjects {
 		b.trackPointer(alloca)
 	}
-	b.CreateStore(deferFrame, alloca)
+	b.CreateStore(deferredCall, alloca)
 
 	// Push it on top of the linked list by replacing deferPtr.
 	allocaCast := b.CreateBitCast(alloca, next.Type(), "defer.alloca.cast")
@@ -248,11 +421,11 @@ func (b *builder) createRunDefers() {
 	//         }
 	//     }
 
-	// Create loop.
-	loophead := b.ctx.AddBasicBlock(b.llvmFn, "rundefers.loophead")
-	loop := b.ctx.AddBasicBlock(b.llvmFn, "rundefers.loop")
-	unreachable := b.ctx.AddBasicBlock(b.llvmFn, "rundefers.default")
-	end := b.ctx.AddBasicBlock(b.llvmFn, "rundefers.end")
+	// Create loop, in the order: loophead, loop, callback0, callback1, ..., unreachable, end.
+	end := b.insertBasicBlock("rundefers.end")
+	unreachable := b.ctx.InsertBasicBlock(end, "rundefers.default")
+	loop := b.ctx.InsertBasicBlock(unreachable, "rundefers.loop")
+	loophead := b.ctx.InsertBasicBlock(loop, "rundefers.loophead")
 	b.CreateBr(loophead)
 
 	// Create loop head:
@@ -284,7 +457,7 @@ func (b *builder) createRunDefers() {
 		// Create switch case, for example:
 		//     case 0:
 		//         // run first deferred call
-		block := b.ctx.AddBasicBlock(b.llvmFn, "rundefers.callback")
+		block := b.insertBasicBlock("rundefers.callback" + strconv.Itoa(i))
 		sw.AddCase(llvm.ConstInt(b.uintptrType, uint64(i), false), block)
 		b.SetInsertPointAtEnd(block)
 		switch callback := callback.(type) {
@@ -295,7 +468,7 @@ func (b *builder) createRunDefers() {
 			valueTypes := []llvm.Type{b.uintptrType, llvm.PointerType(b.getLLVMRuntimeType("_defer"), 0)}
 
 			if !callback.IsInvoke() {
-				//Expect funcValue to be passed through the defer frame.
+				//Expect funcValue to be passed through the deferred call.
 				valueTypes = append(valueTypes, b.getFuncType(callback.Signature()))
 			} else {
 				//Expect typecode
@@ -306,14 +479,14 @@ func (b *builder) createRunDefers() {
 				valueTypes = append(valueTypes, b.getLLVMType(arg.Type()))
 			}
 
-			deferFrameType := b.ctx.StructType(valueTypes, false)
-			deferFramePtr := b.CreateBitCast(deferData, llvm.PointerType(deferFrameType, 0), "deferFrame")
+			deferredCallType := b.ctx.StructType(valueTypes, false)
+			deferredCallPtr := b.CreateBitCast(deferData, llvm.PointerType(deferredCallType, 0), "defercall")
 
 			// Extract the params from the struct (including receiver).
 			forwardParams := []llvm.Value{}
 			zero := llvm.ConstInt(b.ctx.Int32Type(), 0, false)
 			for i := 2; i < len(valueTypes); i++ {
-				gep := b.CreateInBoundsGEP(deferFramePtr, []llvm.Value{zero, llvm.ConstInt(b.ctx.Int32Type(), uint64(i), false)}, "gep")
+				gep := b.CreateInBoundsGEP(deferredCallPtr, []llvm.Value{zero, llvm.ConstInt(b.ctx.Int32Type(), uint64(i), false)}, "gep")
 				forwardParam := b.CreateLoad(gep, "param")
 				forwardParams = append(forwardParams, forwardParam)
 			}
@@ -353,14 +526,14 @@ func (b *builder) createRunDefers() {
 			for _, param := range getParams(callback.Signature) {
 				valueTypes = append(valueTypes, b.getLLVMType(param.Type()))
 			}
-			deferFrameType := b.ctx.StructType(valueTypes, false)
-			deferFramePtr := b.CreateBitCast(deferData, llvm.PointerType(deferFrameType, 0), "deferFrame")
+			deferredCallType := b.ctx.StructType(valueTypes, false)
+			deferredCallPtr := b.CreateBitCast(deferData, llvm.PointerType(deferredCallType, 0), "defercall")
 
 			// Extract the params from the struct.
 			forwardParams := []llvm.Value{}
 			zero := llvm.ConstInt(b.ctx.Int32Type(), 0, false)
 			for i := range getParams(callback.Signature) {
-				gep := b.CreateInBoundsGEP(deferFramePtr, []llvm.Value{zero, llvm.ConstInt(b.ctx.Int32Type(), uint64(i+2), false)}, "gep")
+				gep := b.CreateInBoundsGEP(deferredCallPtr, []llvm.Value{zero, llvm.ConstInt(b.ctx.Int32Type(), uint64(i+2), false)}, "gep")
 				forwardParam := b.CreateLoad(gep, "param")
 				forwardParams = append(forwardParams, forwardParam)
 			}
@@ -374,7 +547,7 @@ func (b *builder) createRunDefers() {
 			}
 
 			// Call real function.
-			b.createCall(b.getFunction(callback), forwardParams, "")
+			b.createInvoke(b.getFunction(callback), forwardParams, "")
 
 		case *ssa.MakeClosure:
 			// Get the real defer struct type and cast to it.
@@ -385,14 +558,14 @@ func (b *builder) createRunDefers() {
 				valueTypes = append(valueTypes, b.getLLVMType(params.At(i).Type()))
 			}
 			valueTypes = append(valueTypes, b.i8ptrType) // closure
-			deferFrameType := b.ctx.StructType(valueTypes, false)
-			deferFramePtr := b.CreateBitCast(deferData, llvm.PointerType(deferFrameType, 0), "deferFrame")
+			deferredCallType := b.ctx.StructType(valueTypes, false)
+			deferredCallPtr := b.CreateBitCast(deferData, llvm.PointerType(deferredCallType, 0), "defercall")
 
 			// Extract the params from the struct.
 			forwardParams := []llvm.Value{}
 			zero := llvm.ConstInt(b.ctx.Int32Type(), 0, false)
 			for i := 2; i < len(valueTypes); i++ {
-				gep := b.CreateInBoundsGEP(deferFramePtr, []llvm.Value{zero, llvm.ConstInt(b.ctx.Int32Type(), uint64(i), false)}, "")
+				gep := b.CreateInBoundsGEP(deferredCallPtr, []llvm.Value{zero, llvm.ConstInt(b.ctx.Int32Type(), uint64(i), false)}, "")
 				forwardParam := b.CreateLoad(gep, "param")
 				forwardParams = append(forwardParams, forwardParam)
 			}
@@ -411,14 +584,14 @@ func (b *builder) createRunDefers() {
 				valueTypes = append(valueTypes, b.getLLVMType(params.At(i).Type()))
 			}
 
-			deferFrameType := b.ctx.StructType(valueTypes, false)
-			deferFramePtr := b.CreateBitCast(deferData, llvm.PointerType(deferFrameType, 0), "deferFrame")
+			deferredCallType := b.ctx.StructType(valueTypes, false)
+			deferredCallPtr := b.CreateBitCast(deferData, llvm.PointerType(deferredCallType, 0), "defercall")
 
 			// Extract the params from the struct.
 			var argValues []llvm.Value
 			zero := llvm.ConstInt(b.ctx.Int32Type(), 0, false)
 			for i := 0; i < params.Len(); i++ {
-				gep := b.CreateInBoundsGEP(deferFramePtr, []llvm.Value{zero, llvm.ConstInt(b.ctx.Int32Type(), uint64(i+2), false)}, "gep")
+				gep := b.CreateInBoundsGEP(deferredCallPtr, []llvm.Value{zero, llvm.ConstInt(b.ctx.Int32Type(), uint64(i+2), false)}, "gep")
 				forwardParam := b.CreateLoad(gep, "param")
 				argValues = append(argValues, forwardParam)
 			}

compiler/goroutine.go

@@ -120,16 +120,16 @@ func (b *builder) createGo(instr *ssa.Go) {
 // createGoroutineStartWrapper creates a wrapper for the task-based
 // implementation of goroutines. For example, to call a function like this:
 //
-//     func add(x, y int) int { ... }
+//	func add(x, y int) int { ... }
 //
 // It creates a wrapper like this:
 //
-//     func add$gowrapper(ptr *unsafe.Pointer) {
-//         args := (*struct{
-//             x, y int
-//         })(ptr)
-//         add(args.x, args.y)
-//     }
+//	func add$gowrapper(ptr *unsafe.Pointer) {
+//	    args := (*struct{
+//	        x, y int
+//	    })(ptr)
+//	    add(args.x, args.y)
+//	}
 //
 // This is useful because the task-based goroutine start implementation only
 // allows a single (pointer) argument to the newly started goroutine. Also, it

compiler/inlineasm.go

@@ -17,7 +17,7 @@ import (
 // operands or return values. It is useful for trivial instructions, like wfi in
 // ARM or sleep in AVR.
 //
-//     func Asm(asm string)
+//	func Asm(asm string)
 //
 // The provided assembly must be a constant.
 func (b *builder) createInlineAsm(args []ssa.Value) (llvm.Value, error) {
@@ -31,17 +31,17 @@ func (b *builder) createInlineAsm(args []ssa.Value) (llvm.Value, error) {
 // This is a compiler builtin, which allows assembly to be called in a flexible
 // way.
 //
-//     func AsmFull(asm string, regs map[string]interface{}) uintptr
+//	func AsmFull(asm string, regs map[string]interface{}) uintptr
 //
 // The asm parameter must be a constant string. The regs parameter must be
 // provided immediately. For example:
 //
-//     arm.AsmFull(
-//         "str {value}, {result}",
-//         map[string]interface{}{
-//             "value":  1
-//             "result": &dest,
-//         })
+//	arm.AsmFull(
+//	    "str {value}, {result}",
+//	    map[string]interface{}{
+//	        "value":  1
+//	        "result": &dest,
+//	    })
 func (b *builder) createInlineAsmFull(instr *ssa.CallCommon) (llvm.Value, error) {
 	asmString := constant.StringVal(instr.Args[0].(*ssa.Const).Value)
 	registers := map[string]llvm.Value{}
@@ -132,11 +132,11 @@ func (b *builder) createInlineAsmFull(instr *ssa.CallCommon) (llvm.Value, error)
 // This is a compiler builtin which emits an inline SVCall instruction. It can
 // be one of:
 //
-//     func SVCall0(num uintptr) uintptr
-//     func SVCall1(num uintptr, a1 interface{}) uintptr
-//     func SVCall2(num uintptr, a1, a2 interface{}) uintptr
-//     func SVCall3(num uintptr, a1, a2, a3 interface{}) uintptr
-//     func SVCall4(num uintptr, a1, a2, a3, a4 interface{}) uintptr
+//	func SVCall0(num uintptr) uintptr
+//	func SVCall1(num uintptr, a1 interface{}) uintptr
+//	func SVCall2(num uintptr, a1, a2 interface{}) uintptr
+//	func SVCall3(num uintptr, a1, a2, a3 interface{}) uintptr
+//	func SVCall4(num uintptr, a1, a2, a3, a4 interface{}) uintptr
 //
 // The num parameter must be a constant. All other parameters may be any scalar
 // value supported by LLVM inline assembly.
@@ -169,11 +169,11 @@ func (b *builder) emitSVCall(args []ssa.Value) (llvm.Value, error) {
 // This is a compiler builtin which emits an inline SVCall instruction. It can
 // be one of:
 //
-//     func SVCall0(num uintptr) uintptr
-//     func SVCall1(num uintptr, a1 interface{}) uintptr
-//     func SVCall2(num uintptr, a1, a2 interface{}) uintptr
-//     func SVCall3(num uintptr, a1, a2, a3 interface{}) uintptr
-//     func SVCall4(num uintptr, a1, a2, a3, a4 interface{}) uintptr
+//	func SVCall0(num uintptr) uintptr
+//	func SVCall1(num uintptr, a1 interface{}) uintptr
+//	func SVCall2(num uintptr, a1, a2 interface{}) uintptr
+//	func SVCall3(num uintptr, a1, a2, a3 interface{}) uintptr
+//	func SVCall4(num uintptr, a1, a2, a3, a4 interface{}) uintptr
 //
 // The num parameter must be a constant. All other parameters may be any scalar
 // value supported by LLVM inline assembly.
@@ -206,10 +206,10 @@ func (b *builder) emitSV64Call(args []ssa.Value) (llvm.Value, error) {
 
 // This is a compiler builtin which emits CSR instructions. It can be one of:
 //
-//     func (csr CSR) Get() uintptr
-//     func (csr CSR) Set(uintptr)
-//     func (csr CSR) SetBits(uintptr) uintptr
-//     func (csr CSR) ClearBits(uintptr) uintptr
+//	func (csr CSR) Get() uintptr
+//	func (csr CSR) Set(uintptr)
+//	func (csr CSR) SetBits(uintptr) uintptr
+//	func (csr CSR) ClearBits(uintptr) uintptr
 //
 // The csr parameter (method receiver) must be a constant. Other parameter can
 // be any value.

compiler/interface.go

@@ -389,8 +389,8 @@ func (b *builder) createTypeAssert(expr *ssa.TypeAssert) llvm.Value {
 	// value.
 
 	prevBlock := b.GetInsertBlock()
-	okBlock := b.ctx.AddBasicBlock(b.llvmFn, "typeassert.ok")
-	nextBlock := b.ctx.AddBasicBlock(b.llvmFn, "typeassert.next")
+	okBlock := b.insertBasicBlock("typeassert.ok")
+	nextBlock := b.insertBasicBlock("typeassert.next")
 	b.blockExits[b.currentBlock] = nextBlock // adjust outgoing block for phi nodes
 	b.CreateCondBr(commaOk, okBlock, nextBlock)
 
@@ -550,8 +550,8 @@ func (c *compilerContext) getInterfaceInvokeWrapper(fn *ssa.Function, llvmFn llv
 // internally to match interfaces and to call the correct method on an
 // interface. Examples:
 //
-//     String() string
-//     Read([]byte) (int, error)
+//	String() string
+//	Read([]byte) (int, error)
 func methodSignature(method *types.Func) string {
 	return method.Name() + signature(method.Type().(*types.Signature))
 }
@@ -559,8 +559,8 @@ func methodSignature(method *types.Func) string {
 // Make a readable version of a function (pointer) signature.
 // Examples:
 //
-//     () string
-//     (string, int) (int, error)
+//	() string
+//	(string, int) (int, error)
 func signature(sig *types.Signature) string {
 	s := ""
 	if sig.Params().Len() == 0 {

compiler/intrinsics.go

@@ -3,36 +3,67 @@ package compiler
 // This file contains helper functions to create calls to LLVM intrinsics.
 
 import (
+	"go/token"
 	"strconv"
+	"strings"
 
-	"golang.org/x/tools/go/ssa"
 	"tinygo.org/x/go-llvm"
 )
 
-// createMemoryCopyCall creates a call to a builtin LLVM memcpy or memmove
+// Define unimplemented intrinsic functions.
+//
+// Some functions are either normally implemented in Go assembly (like
+// sync/atomic functions) or intentionally left undefined to be implemented
+// directly in the compiler (like runtime/volatile functions). Either way, look
+// for these and implement them if this is the case.
+func (b *builder) defineIntrinsicFunction() {
+	name := b.fn.RelString(nil)
+	switch {
+	case name == "runtime.memcpy" || name == "runtime.memmove":
+		b.createMemoryCopyImpl()
+	case name == "runtime.memzero":
+		b.createMemoryZeroImpl()
+	case strings.HasPrefix(name, "runtime/volatile.Load"):
+		b.createVolatileLoad()
+	case strings.HasPrefix(name, "runtime/volatile.Store"):
+		b.createVolatileStore()
+	case strings.HasPrefix(name, "sync/atomic.") && token.IsExported(b.fn.Name()):
+		b.createFunctionStart(true)
+		returnValue := b.createAtomicOp(b.fn.Name())
+		if !returnValue.IsNil() {
+			b.CreateRet(returnValue)
+		} else {
+			b.CreateRetVoid()
+		}
+	}
+}
+
+// createMemoryCopyImpl creates a call to a builtin LLVM memcpy or memmove
 // function, declaring this function if needed. These calls are treated
 // specially by optimization passes possibly resulting in better generated code,
 // and will otherwise be lowered to regular libc memcpy/memmove calls.
-func (b *builder) createMemoryCopyCall(fn *ssa.Function, args []ssa.Value) (llvm.Value, error) {
-	fnName := "llvm." + fn.Name() + ".p0i8.p0i8.i" + strconv.Itoa(b.uintptrType.IntTypeWidth())
+func (b *builder) createMemoryCopyImpl() {
+	b.createFunctionStart(true)
+	fnName := "llvm." + b.fn.Name() + ".p0i8.p0i8.i" + strconv.Itoa(b.uintptrType.IntTypeWidth())
 	llvmFn := b.mod.NamedFunction(fnName)
 	if llvmFn.IsNil() {
 		fnType := llvm.FunctionType(b.ctx.VoidType(), []llvm.Type{b.i8ptrType, b.i8ptrType, b.uintptrType, b.ctx.Int1Type()}, false)
 		llvmFn = llvm.AddFunction(b.mod, fnName, fnType)
 	}
 	var params []llvm.Value
-	for _, param := range args {
+	for _, param := range b.fn.Params {
 		params = append(params, b.getValue(param))
 	}
 	params = append(params, llvm.ConstInt(b.ctx.Int1Type(), 0, false))
 	b.CreateCall(llvmFn, params, "")
-	return llvm.Value{}, nil
+	b.CreateRetVoid()
 }
 
-// createMemoryZeroCall creates calls to llvm.memset.* to zero a block of
+// createMemoryZeroImpl creates calls to llvm.memset.* to zero a block of
 // memory, declaring the function if needed. These calls will be lowered to
 // regular libc memset calls if they aren't optimized out in a different way.
-func (b *builder) createMemoryZeroCall(args []ssa.Value) (llvm.Value, error) {
+func (b *builder) createMemoryZeroImpl() {
+	b.createFunctionStart(true)
 	fnName := "llvm.memset.p0i8.i" + strconv.Itoa(b.uintptrType.IntTypeWidth())
 	llvmFn := b.mod.NamedFunction(fnName)
 	if llvmFn.IsNil() {
@@ -40,65 +71,54 @@ func (b *builder) createMemoryZeroCall(args []ssa.Value) (llvm.Value, error) {
 		llvmFn = llvm.AddFunction(b.mod, fnName, fnType)
 	}
 	params := []llvm.Value{
-		b.getValue(args[0]),
+		b.getValue(b.fn.Params[0]),
 		llvm.ConstInt(b.ctx.Int8Type(), 0, false),
-		b.getValue(args[1]),
+		b.getValue(b.fn.Params[1]),
 		llvm.ConstInt(b.ctx.Int1Type(), 0, false),
 	}
 	b.CreateCall(llvmFn, params, "")
-	return llvm.Value{}, nil
+	b.CreateRetVoid()
 }
 
 var mathToLLVMMapping = map[string]string{
-	"math.Sqrt":  "llvm.sqrt.f64",
-	"math.Floor": "llvm.floor.f64",
 	"math.Ceil":  "llvm.ceil.f64",
+	"math.Exp":   "llvm.exp.f64",
+	"math.Exp2":  "llvm.exp2.f64",
+	"math.Floor": "llvm.floor.f64",
+	"math.Log":   "llvm.log.f64",
+	"math.Sqrt":  "llvm.sqrt.f64",
 	"math.Trunc": "llvm.trunc.f64",
 }
 
-// createMathOp tries to lower the given call as a LLVM math intrinsic, if
-// possible. It returns the call result if possible, and a boolean whether it
-// succeeded. If it doesn't succeed, the architecture doesn't support the given
-// intrinsic.
-func (b *builder) createMathOp(call *ssa.CallCommon) (llvm.Value, bool) {
-	// Check whether this intrinsic is supported on the given GOARCH.
-	// If it is unsupported, this can have two reasons:
-	//
-	//  1. LLVM can expand the intrinsic inline (using float instructions), but
-	//     the result doesn't pass the tests of the math package.
-	//  2. LLVM cannot expand the intrinsic inline, will therefore lower it as a
-	//     libm function call, but the libm function call also fails the math
-	//     package tests.
-	//
-	// Whatever the implementation, it must pass the tests in the math package
-	// so unfortunately only the below intrinsic+architecture combinations are
-	// supported.
-	name := call.StaticCallee().RelString(nil)
-	switch name {
-	case "math.Ceil", "math.Floor", "math.Trunc":
-		if b.GOARCH != "wasm" && b.GOARCH != "arm64" {
-			return llvm.Value{}, false
-		}
-	case "math.Sqrt":
-		if b.GOARCH != "wasm" && b.GOARCH != "amd64" && b.GOARCH != "386" {
-			return llvm.Value{}, false
-		}
-	default:
-		return llvm.Value{}, false // only the above functions are supported.
+// defineMathOp defines a math function body as a call to a LLVM intrinsic,
+// instead of the regular Go implementation. This allows LLVM to reason about
+// the math operation and (depending on the architecture) allows it to lower the
+// operation to very fast floating point instructions. If this is not possible,
+// LLVM will emit a call to a libm function that implements the same operation.
+//
+// One example of an optimization that LLVM can do is to convert
+// float32(math.Sqrt(float64(v))) to a 32-bit floating point operation, which is
+// beneficial on architectures where 64-bit floating point operations are (much)
+// more expensive than 32-bit ones.
+func (b *builder) defineMathOp() {
+	b.createFunctionStart(true)
+	llvmName := mathToLLVMMapping[b.fn.RelString(nil)]
+	if llvmName == "" {
+		panic("unreachable: unknown math operation") // sanity check
 	}
-
-	llvmFn := b.mod.NamedFunction(mathToLLVMMapping[name])
+	llvmFn := b.mod.NamedFunction(llvmName)
 	if llvmFn.IsNil() {
 		// The intrinsic doesn't exist yet, so declare it.
 		// At the moment, all supported intrinsics have the form "double
 		// foo(double %x)" so we can hardcode the signature here.
 		llvmType := llvm.FunctionType(b.ctx.DoubleType(), []llvm.Type{b.ctx.DoubleType()}, false)
-		llvmFn = llvm.AddFunction(b.mod, mathToLLVMMapping[name], llvmType)
+		llvmFn = llvm.AddFunction(b.mod, llvmName, llvmType)
 	}
 	// Create a call to the intrinsic.
-	args := make([]llvm.Value, len(call.Args))
-	for i, arg := range call.Args {
-		args[i] = b.getValue(arg)
+	args := make([]llvm.Value, len(b.fn.Params))
+	for i, param := range b.fn.Params {
+		args[i] = b.getValue(param)
 	}
-	return b.CreateCall(llvmFn, args, ""), true
+	result := b.CreateCall(llvmFn, args, "")
+	b.CreateRet(result)
 }

compiler/llvm.go

@@ -5,6 +5,7 @@ import (
 	"go/token"
 	"go/types"
 	"math/big"
+	"strings"
 
 	"github.com/tinygo-org/tinygo/compiler/llvmutil"
 	"tinygo.org/x/go-llvm"
@@ -23,6 +24,23 @@ func (b *builder) createTemporaryAlloca(t llvm.Type, name string) (alloca, bitca
 	return llvmutil.CreateTemporaryAlloca(b.Builder, b.mod, t, name)
 }
 
+// insertBasicBlock inserts a new basic block after the current basic block.
+// This is useful when inserting new basic blocks while converting a
+// *ssa.BasicBlock to a llvm.BasicBlock and the LLVM basic block needs some
+// extra blocks.
+// It does not update b.blockExits, this must be done by the caller.
+func (b *builder) insertBasicBlock(name string) llvm.BasicBlock {
+	currentBB := b.Builder.GetInsertBlock()
+	nextBB := llvm.NextBasicBlock(currentBB)
+	if nextBB.IsNil() {
+		// Last basic block in the function, so add one to the end.
+		return b.ctx.AddBasicBlock(b.llvmFn, name)
+	}
+	// Insert a basic block before the next basic block - that is, at the
+	// current insert location.
+	return b.ctx.InsertBasicBlock(nextBB, name)
+}
+
 // emitLifetimeEnd signals the end of an (alloca) lifetime by calling the
 // llvm.lifetime.end intrinsic. It is commonly used together with
 // createTemporaryAlloca.
@@ -253,3 +271,46 @@ func (c *compilerContext) getPointerBitmap(typ llvm.Type, pos token.Pos) *big.In
 		panic("unknown LLVM type")
 	}
 }
+
+// archFamily returns the archtecture from the LLVM triple but with some
+// architecture names ("armv6", "thumbv7m", etc) merged into a single
+// architecture name ("arm").
+func (c *compilerContext) archFamily() string {
+	arch := strings.Split(c.Triple, "-")[0]
+	if strings.HasPrefix(arch, "arm64") {
+		return "aarch64"
+	}
+	if strings.HasPrefix(arch, "arm") || strings.HasPrefix(arch, "thumb") {
+		return "arm"
+	}
+	return arch
+}
+
+// isThumb returns whether we're in ARM or in Thumb mode. It panics if the
+// features string is not one for an ARM architecture.
+func (c *compilerContext) isThumb() bool {
+	var isThumb, isNotThumb bool
+	for _, feature := range strings.Split(c.Features, ",") {
+		if feature == "+thumb-mode" {
+			isThumb = true
+		}
+		if feature == "-thumb-mode" {
+			isNotThumb = true
+		}
+	}
+	if isThumb == isNotThumb {
+		panic("unexpected feature flags")
+	}
+	return isThumb
+}
+
+// readStackPointer emits a LLVM intrinsic call that returns the current stack
+// pointer as an *i8.
+func (b *builder) readStackPointer() llvm.Value {
+	stacksave := b.mod.NamedFunction("llvm.stacksave")
+	if stacksave.IsNil() {
+		fnType := llvm.FunctionType(b.i8ptrType, nil, false)
+		stacksave = llvm.AddFunction(b.mod, "llvm.stacksave", fnType)
+	}
+	return b.CreateCall(stacksave, nil, "")
+}

compiler/sizes.go

@@ -152,7 +152,7 @@ func (s *stdSizes) Sizeof(T types.Type) int64 {
 		return align(offsets[n-1]+s.Sizeof(fields[n-1].Type()), maxAlign)
 	case *types.Interface:
 		return s.PtrSize * 2
-	case *types.Pointer:
+	case *types.Pointer, *types.Chan, *types.Map:
 		return s.PtrSize
 	case *types.Signature:
 		// Func values in TinyGo are two words in size.

compiler/symbol.go

@@ -163,18 +163,20 @@ func (c *compilerContext) getFunction(fn *ssa.Function) llvm.Value {
 	// External/exported functions may not retain pointer values.
 	// https://golang.org/cmd/cgo/#hdr-Passing_pointers
 	if info.exported {
-		// Set the wasm-import-module attribute if the function's module is set.
-		if info.module != "" {
-
+		if c.archFamily() == "wasm32" {
 			// We need to add the wasm-import-module and the wasm-import-name
-			wasmImportModuleAttr := c.ctx.CreateStringAttribute("wasm-import-module", info.module)
-			llvmFn.AddFunctionAttr(wasmImportModuleAttr)
-
-			// Add the Wasm Import Name, if we are a named wasm import
-			if info.importName != "" {
-				wasmImportNameAttr := c.ctx.CreateStringAttribute("wasm-import-name", info.importName)
-				llvmFn.AddFunctionAttr(wasmImportNameAttr)
+			// attributes.
+			module := info.module
+			if module == "" {
+				module = "env"
 			}
+			llvmFn.AddFunctionAttr(c.ctx.CreateStringAttribute("wasm-import-module", module))
+
+			name := info.importName
+			if name == "" {
+				name = info.linkName
+			}
+			llvmFn.AddFunctionAttr(c.ctx.CreateStringAttribute("wasm-import-name", name))
 		}
 		nocaptureKind := llvm.AttributeKindID("nocapture")
 		nocapture := c.ctx.CreateEnumAttribute(nocaptureKind, 0)

compiler/syscall.go

@@ -16,20 +16,7 @@ import (
 func (b *builder) createRawSyscall(call *ssa.CallCommon) (llvm.Value, error) {
 	num := b.getValue(call.Args[0])
 	switch {
-	case b.GOARCH == "amd64":
-		if b.GOOS == "darwin" {
-			// Darwin adds this magic number to system call numbers:
-			//
-			// > Syscall classes for 64-bit system call entry.
-			// > For 64-bit users, the 32-bit syscall number is partitioned
-			// > with the high-order bits representing the class and low-order
-			// > bits being the syscall number within that class.
-			// > The high-order 32-bits of the 64-bit syscall number are unused.
-			// > All system classes enter the kernel via the syscall instruction.
-			//
-			// Source: https://opensource.apple.com/source/xnu/xnu-792.13.8/osfmk/mach/i386/syscall_sw.h
-			num = b.CreateOr(num, llvm.ConstInt(b.uintptrType, 0x2000000, false), "")
-		}
+	case b.GOARCH == "amd64" && b.GOOS == "linux":
 		// Sources:
 		//   https://stackoverflow.com/a/2538212
 		//   https://en.wikibooks.org/wiki/X86_Assembly/Interfacing_with_Linux#syscall
@@ -179,26 +166,6 @@ func (b *builder) createSyscall(call *ssa.CallCommon) (llvm.Value, error) {
 		retval = b.CreateInsertValue(retval, zero, 1, "")
 		retval = b.CreateInsertValue(retval, errResult, 2, "")
 		return retval, nil
-	case "darwin":
-		syscallResult, err := b.createRawSyscall(call)
-		if err != nil {
-			return syscallResult, err
-		}
-		// Return values: r0, r1 uintptr, err Errno
-		// Pseudocode:
-		//     var err uintptr
-		//     if syscallResult != 0 {
-		//         err = syscallResult
-		//     }
-		//     return syscallResult, 0, err
-		zero := llvm.ConstInt(b.uintptrType, 0, false)
-		hasError := b.CreateICmp(llvm.IntNE, syscallResult, llvm.ConstInt(b.uintptrType, 0, false), "")
-		errResult := b.CreateSelect(hasError, syscallResult, zero, "syscallError")
-		retval := llvm.Undef(b.ctx.StructType([]llvm.Type{b.uintptrType, b.uintptrType, b.uintptrType}, false))
-		retval = b.CreateInsertValue(retval, syscallResult, 0, "")
-		retval = b.CreateInsertValue(retval, zero, 1, "")
-		retval = b.CreateInsertValue(retval, errResult, 2, "")
-		return retval, nil
 	case "windows":
 		// On Windows, syscall.Syscall* is basically just a function pointer
 		// call. This is complicated in gc because of stack switching and the

compiler/testdata/basic.ll

@@ -6,40 +6,36 @@ target triple = "wasm32-unknown-wasi"
 %main.kv = type { float }
 %main.kv.0 = type { i8 }
 
-declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*)
+declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*) #0
 
-declare void @runtime.trackPointer(i8* nocapture readonly, i8*)
+declare void @runtime.trackPointer(i8* nocapture readonly, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.init(i8* %context) unnamed_addr #0 {
+define hidden void @main.init(i8* %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.addInt(i32 %x, i32 %y, i8* %context) unnamed_addr #0 {
+define hidden i32 @main.addInt(i32 %x, i32 %y, i8* %context) unnamed_addr #1 {
 entry:
   %0 = add i32 %x, %y
   ret i32 %0
 }
 
 ; Function Attrs: nounwind
-define hidden i1 @main.equalInt(i32 %x, i32 %y, i8* %context) unnamed_addr #0 {
+define hidden i1 @main.equalInt(i32 %x, i32 %y, i8* %context) unnamed_addr #1 {
 entry:
   %0 = icmp eq i32 %x, %y
   ret i1 %0
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.divInt(i32 %x, i32 %y, i8* %context) unnamed_addr #0 {
+define hidden i32 @main.divInt(i32 %x, i32 %y, i8* %context) unnamed_addr #1 {
 entry:
   %0 = icmp eq i32 %y, 0
   br i1 %0, label %divbyzero.throw, label %divbyzero.next
 
-divbyzero.throw:                                  ; preds = %entry
-  call void @runtime.divideByZeroPanic(i8* undef) #0
-  unreachable
-
 divbyzero.next:                                   ; preds = %entry
   %1 = icmp eq i32 %y, -1
   %2 = icmp eq i32 %x, -2147483648
@@ -47,35 +43,35 @@ divbyzero.next:                                   ; preds = %entry
   %4 = select i1 %3, i32 1, i32 %y
   %5 = sdiv i32 %x, %4
   ret i32 %5
+
+divbyzero.throw:                                  ; preds = %entry
+  call void @runtime.divideByZeroPanic(i8* undef) #2
+  unreachable
 }
 
-declare void @runtime.divideByZeroPanic(i8*)
+declare void @runtime.divideByZeroPanic(i8*) #0
 
 ; Function Attrs: nounwind
-define hidden i32 @main.divUint(i32 %x, i32 %y, i8* %context) unnamed_addr #0 {
+define hidden i32 @main.divUint(i32 %x, i32 %y, i8* %context) unnamed_addr #1 {
 entry:
   %0 = icmp eq i32 %y, 0
   br i1 %0, label %divbyzero.throw, label %divbyzero.next
 
-divbyzero.throw:                                  ; preds = %entry
-  call void @runtime.divideByZeroPanic(i8* undef) #0
-  unreachable
-
 divbyzero.next:                                   ; preds = %entry
   %1 = udiv i32 %x, %y
   ret i32 %1
+
+divbyzero.throw:                                  ; preds = %entry
+  call void @runtime.divideByZeroPanic(i8* undef) #2
+  unreachable
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.remInt(i32 %x, i32 %y, i8* %context) unnamed_addr #0 {
+define hidden i32 @main.remInt(i32 %x, i32 %y, i8* %context) unnamed_addr #1 {
 entry:
   %0 = icmp eq i32 %y, 0
   br i1 %0, label %divbyzero.throw, label %divbyzero.next
 
-divbyzero.throw:                                  ; preds = %entry
-  call void @runtime.divideByZeroPanic(i8* undef) #0
-  unreachable
-
 divbyzero.next:                                   ; preds = %entry
   %1 = icmp eq i32 %y, -1
   %2 = icmp eq i32 %x, -2147483648
@@ -83,79 +79,83 @@ divbyzero.next:                                   ; preds = %entry
   %4 = select i1 %3, i32 1, i32 %y
   %5 = srem i32 %x, %4
   ret i32 %5
+
+divbyzero.throw:                                  ; preds = %entry
+  call void @runtime.divideByZeroPanic(i8* undef) #2
+  unreachable
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.remUint(i32 %x, i32 %y, i8* %context) unnamed_addr #0 {
+define hidden i32 @main.remUint(i32 %x, i32 %y, i8* %context) unnamed_addr #1 {
 entry:
   %0 = icmp eq i32 %y, 0
   br i1 %0, label %divbyzero.throw, label %divbyzero.next
 
-divbyzero.throw:                                  ; preds = %entry
-  call void @runtime.divideByZeroPanic(i8* undef) #0
-  unreachable
-
 divbyzero.next:                                   ; preds = %entry
   %1 = urem i32 %x, %y
   ret i32 %1
+
+divbyzero.throw:                                  ; preds = %entry
+  call void @runtime.divideByZeroPanic(i8* undef) #2
+  unreachable
 }
 
 ; Function Attrs: nounwind
-define hidden i1 @main.floatEQ(float %x, float %y, i8* %context) unnamed_addr #0 {
+define hidden i1 @main.floatEQ(float %x, float %y, i8* %context) unnamed_addr #1 {
 entry:
   %0 = fcmp oeq float %x, %y
   ret i1 %0
 }
 
 ; Function Attrs: nounwind
-define hidden i1 @main.floatNE(float %x, float %y, i8* %context) unnamed_addr #0 {
+define hidden i1 @main.floatNE(float %x, float %y, i8* %context) unnamed_addr #1 {
 entry:
   %0 = fcmp une float %x, %y
   ret i1 %0
 }
 
 ; Function Attrs: nounwind
-define hidden i1 @main.floatLower(float %x, float %y, i8* %context) unnamed_addr #0 {
+define hidden i1 @main.floatLower(float %x, float %y, i8* %context) unnamed_addr #1 {
 entry:
   %0 = fcmp olt float %x, %y
   ret i1 %0
 }
 
 ; Function Attrs: nounwind
-define hidden i1 @main.floatLowerEqual(float %x, float %y, i8* %context) unnamed_addr #0 {
+define hidden i1 @main.floatLowerEqual(float %x, float %y, i8* %context) unnamed_addr #1 {
 entry:
   %0 = fcmp ole float %x, %y
   ret i1 %0
 }
 
 ; Function Attrs: nounwind
-define hidden i1 @main.floatGreater(float %x, float %y, i8* %context) unnamed_addr #0 {
+define hidden i1 @main.floatGreater(float %x, float %y, i8* %context) unnamed_addr #1 {
 entry:
   %0 = fcmp ogt float %x, %y
   ret i1 %0
 }
 
 ; Function Attrs: nounwind
-define hidden i1 @main.floatGreaterEqual(float %x, float %y, i8* %context) unnamed_addr #0 {
+define hidden i1 @main.floatGreaterEqual(float %x, float %y, i8* %context) unnamed_addr #1 {
 entry:
   %0 = fcmp oge float %x, %y
   ret i1 %0
 }
 
 ; Function Attrs: nounwind
-define hidden float @main.complexReal(float %x.r, float %x.i, i8* %context) unnamed_addr #0 {
+define hidden float @main.complexReal(float %x.r, float %x.i, i8* %context) unnamed_addr #1 {
 entry:
   ret float %x.r
 }
 
 ; Function Attrs: nounwind
-define hidden float @main.complexImag(float %x.r, float %x.i, i8* %context) unnamed_addr #0 {
+define hidden float @main.complexImag(float %x.r, float %x.i, i8* %context) unnamed_addr #1 {
 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, i8* %context) unnamed_addr #0 {
+define hidden { float, float } @main.complexAdd(float %x.r, float %x.i, float %y.r, float %y.i, i8* %context) unnamed_addr #1 {
 entry:
   %0 = fadd float %x.r, %y.r
   %1 = fadd float %x.i, %y.i
@@ -165,7 +165,7 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden { float, float } @main.complexSub(float %x.r, float %x.i, float %y.r, float %y.i, i8* %context) unnamed_addr #0 {
+define hidden { float, float } @main.complexSub(float %x.r, float %x.i, float %y.r, float %y.i, i8* %context) unnamed_addr #1 {
 entry:
   %0 = fsub float %x.r, %y.r
   %1 = fsub float %x.i, %y.i
@@ -175,7 +175,7 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden { float, float } @main.complexMul(float %x.r, float %x.i, float %y.r, float %y.i, i8* %context) unnamed_addr #0 {
+define hidden { float, float } @main.complexMul(float %x.r, float %x.i, float %y.r, float %y.i, i8* %context) unnamed_addr #1 {
 entry:
   %0 = fmul float %x.r, %y.r
   %1 = fmul float %x.i, %y.i
@@ -189,16 +189,18 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.foo(%main.kv* dereferenceable_or_null(4) %a, i8* %context) unnamed_addr #0 {
+define hidden void @main.foo(%main.kv* dereferenceable_or_null(4) %a, i8* %context) unnamed_addr #1 {
 entry:
   call void @"main.foo$1"(%main.kv.0* null, i8* undef)
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @"main.foo$1"(%main.kv.0* dereferenceable_or_null(1) %b, i8* %context) unnamed_addr #0 {
+define internal void @"main.foo$1"(%main.kv.0* dereferenceable_or_null(1) %b, i8* %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
-attributes #0 = { nounwind }
+attributes #0 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #1 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #2 = { nounwind }

compiler/testdata/channel.ll

@@ -5,24 +5,24 @@ target triple = "wasm32-unknown-wasi"
 
 %runtime.channel = type { i32, i32, i8, %runtime.channelBlockedList*, i32, i32, i32, i8* }
 %runtime.channelBlockedList = type { %runtime.channelBlockedList*, %"internal/task.Task"*, %runtime.chanSelectState*, { %runtime.channelBlockedList*, i32, i32 } }
-%"internal/task.Task" = type { %"internal/task.Task"*, i8*, i64, %"internal/task.gcData", %"internal/task.state" }
+%"internal/task.Task" = type { %"internal/task.Task"*, i8*, i64, %"internal/task.gcData", %"internal/task.state", i8* }
 %"internal/task.gcData" = type { i8* }
 %"internal/task.state" = type { i32, i8*, %"internal/task.stackState", i1 }
 %"internal/task.stackState" = type { i32, i32 }
 %runtime.chanSelectState = type { %runtime.channel*, i8* }
 
-declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*)
+declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*) #0
 
-declare void @runtime.trackPointer(i8* nocapture readonly, i8*)
+declare void @runtime.trackPointer(i8* nocapture readonly, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.init(i8* %context) unnamed_addr #0 {
+define hidden void @main.init(i8* %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.chanIntSend(%runtime.channel* dereferenceable_or_null(32) %ch, i8* %context) unnamed_addr #0 {
+define hidden void @main.chanIntSend(%runtime.channel* dereferenceable_or_null(32) %ch, i8* %context) unnamed_addr #1 {
 entry:
   %chan.blockedList = alloca %runtime.channelBlockedList, align 8
   %chan.value = alloca i32, align 4
@@ -31,22 +31,22 @@ entry:
   store i32 3, i32* %chan.value, align 4
   %chan.blockedList.bitcast = bitcast %runtime.channelBlockedList* %chan.blockedList to i8*
   call void @llvm.lifetime.start.p0i8(i64 24, i8* nonnull %chan.blockedList.bitcast)
-  call void @runtime.chanSend(%runtime.channel* %ch, i8* nonnull %chan.value.bitcast, %runtime.channelBlockedList* nonnull %chan.blockedList, i8* undef) #0
+  call void @runtime.chanSend(%runtime.channel* %ch, i8* nonnull %chan.value.bitcast, %runtime.channelBlockedList* nonnull %chan.blockedList, i8* undef) #3
   call void @llvm.lifetime.end.p0i8(i64 24, i8* nonnull %chan.blockedList.bitcast)
   call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %chan.value.bitcast)
   ret void
 }
 
 ; Function Attrs: argmemonly nofree nosync nounwind willreturn
-declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #1
+declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #2
 
-declare void @runtime.chanSend(%runtime.channel* dereferenceable_or_null(32), i8*, %runtime.channelBlockedList* dereferenceable_or_null(24), i8*)
+declare void @runtime.chanSend(%runtime.channel* dereferenceable_or_null(32), i8*, %runtime.channelBlockedList* dereferenceable_or_null(24), i8*) #0
 
 ; Function Attrs: argmemonly nofree nosync nounwind willreturn
-declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) #1
+declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) #2
 
 ; Function Attrs: nounwind
-define hidden void @main.chanIntRecv(%runtime.channel* dereferenceable_or_null(32) %ch, i8* %context) unnamed_addr #0 {
+define hidden void @main.chanIntRecv(%runtime.channel* dereferenceable_or_null(32) %ch, i8* %context) unnamed_addr #1 {
 entry:
   %chan.blockedList = alloca %runtime.channelBlockedList, align 8
   %chan.value = alloca i32, align 4
@@ -54,41 +54,41 @@ entry:
   call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %chan.value.bitcast)
   %chan.blockedList.bitcast = bitcast %runtime.channelBlockedList* %chan.blockedList to i8*
   call void @llvm.lifetime.start.p0i8(i64 24, i8* nonnull %chan.blockedList.bitcast)
-  %0 = call i1 @runtime.chanRecv(%runtime.channel* %ch, i8* nonnull %chan.value.bitcast, %runtime.channelBlockedList* nonnull %chan.blockedList, i8* undef) #0
+  %0 = call i1 @runtime.chanRecv(%runtime.channel* %ch, i8* nonnull %chan.value.bitcast, %runtime.channelBlockedList* nonnull %chan.blockedList, i8* undef) #3
   call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %chan.value.bitcast)
   call void @llvm.lifetime.end.p0i8(i64 24, i8* nonnull %chan.blockedList.bitcast)
   ret void
 }
 
-declare i1 @runtime.chanRecv(%runtime.channel* dereferenceable_or_null(32), i8*, %runtime.channelBlockedList* dereferenceable_or_null(24), i8*)
+declare i1 @runtime.chanRecv(%runtime.channel* dereferenceable_or_null(32), i8*, %runtime.channelBlockedList* dereferenceable_or_null(24), i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.chanZeroSend(%runtime.channel* dereferenceable_or_null(32) %ch, i8* %context) unnamed_addr #0 {
+define hidden void @main.chanZeroSend(%runtime.channel* dereferenceable_or_null(32) %ch, i8* %context) unnamed_addr #1 {
 entry:
   %complit = alloca {}, align 8
   %chan.blockedList = alloca %runtime.channelBlockedList, align 8
   %0 = bitcast {}* %complit to i8*
-  call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #0
+  call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #3
   %chan.blockedList.bitcast = bitcast %runtime.channelBlockedList* %chan.blockedList to i8*
   call void @llvm.lifetime.start.p0i8(i64 24, i8* nonnull %chan.blockedList.bitcast)
-  call void @runtime.chanSend(%runtime.channel* %ch, i8* null, %runtime.channelBlockedList* nonnull %chan.blockedList, i8* undef) #0
+  call void @runtime.chanSend(%runtime.channel* %ch, i8* null, %runtime.channelBlockedList* nonnull %chan.blockedList, i8* undef) #3
   call void @llvm.lifetime.end.p0i8(i64 24, i8* nonnull %chan.blockedList.bitcast)
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.chanZeroRecv(%runtime.channel* dereferenceable_or_null(32) %ch, i8* %context) unnamed_addr #0 {
+define hidden void @main.chanZeroRecv(%runtime.channel* dereferenceable_or_null(32) %ch, i8* %context) unnamed_addr #1 {
 entry:
   %chan.blockedList = alloca %runtime.channelBlockedList, align 8
   %chan.blockedList.bitcast = bitcast %runtime.channelBlockedList* %chan.blockedList to i8*
   call void @llvm.lifetime.start.p0i8(i64 24, i8* nonnull %chan.blockedList.bitcast)
-  %0 = call i1 @runtime.chanRecv(%runtime.channel* %ch, i8* null, %runtime.channelBlockedList* nonnull %chan.blockedList, i8* undef) #0
+  %0 = call i1 @runtime.chanRecv(%runtime.channel* %ch, i8* null, %runtime.channelBlockedList* nonnull %chan.blockedList, i8* undef) #3
   call void @llvm.lifetime.end.p0i8(i64 24, i8* nonnull %chan.blockedList.bitcast)
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.selectZeroRecv(%runtime.channel* dereferenceable_or_null(32) %ch1, %runtime.channel* dereferenceable_or_null(32) %ch2, i8* %context) unnamed_addr #0 {
+define hidden void @main.selectZeroRecv(%runtime.channel* dereferenceable_or_null(32) %ch1, %runtime.channel* dereferenceable_or_null(32) %ch2, i8* %context) unnamed_addr #1 {
 entry:
   %select.states.alloca = alloca [2 x %runtime.chanSelectState], align 8
   %select.send.value = alloca i32, align 4
@@ -105,7 +105,7 @@ entry:
   %.repack4 = getelementptr inbounds [2 x %runtime.chanSelectState], [2 x %runtime.chanSelectState]* %select.states.alloca, i32 0, i32 1, i32 1
   store i8* null, i8** %.repack4, align 4
   %select.states = getelementptr inbounds [2 x %runtime.chanSelectState], [2 x %runtime.chanSelectState]* %select.states.alloca, i32 0, i32 0
-  %select.result = call { i32, i1 } @runtime.tryChanSelect(i8* undef, %runtime.chanSelectState* nonnull %select.states, i32 2, i32 2, i8* undef) #0
+  %select.result = call { i32, i1 } @runtime.tryChanSelect(i8* undef, %runtime.chanSelectState* nonnull %select.states, i32 2, i32 2, i8* undef) #3
   call void @llvm.lifetime.end.p0i8(i64 16, i8* nonnull %select.states.alloca.bitcast)
   %1 = extractvalue { i32, i1 } %select.result, 0
   %2 = icmp eq i32 %1, 0
@@ -122,7 +122,9 @@ select.body:                                      ; preds = %select.next
   br label %select.done
 }
 
-declare { i32, i1 } @runtime.tryChanSelect(i8*, %runtime.chanSelectState*, i32, i32, i8*)
+declare { i32, i1 } @runtime.tryChanSelect(i8*, %runtime.chanSelectState*, i32, i32, i8*) #0
 
-attributes #0 = { nounwind }
-attributes #1 = { argmemonly nofree nosync nounwind willreturn }
+attributes #0 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #1 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #2 = { argmemonly nofree nosync nounwind willreturn }
+attributes #3 = { nounwind }

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

@@ -0,0 +1,266 @@
+; ModuleID = 'defer.go'
+source_filename = "defer.go"
+target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
+target triple = "thumbv7m-unknown-unknown-eabi"
+
+%runtime._defer = type { i32, %runtime._defer* }
+%runtime.deferFrame = type { i8*, i8*, [0 x i8*], %runtime.deferFrame*, i1, %runtime._interface }
+%runtime._interface = type { i32, i8* }
+
+declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*) #0
+
+; Function Attrs: nounwind
+define hidden void @main.init(i8* %context) unnamed_addr #1 {
+entry:
+  ret void
+}
+
+declare void @main.external(i8*) #0
+
+; Function Attrs: nounwind
+define hidden void @main.deferSimple(i8* %context) unnamed_addr #1 {
+entry:
+  %defer.alloca = alloca { i32, %runtime._defer* }, align 4
+  %deferPtr = alloca %runtime._defer*, align 4
+  store %runtime._defer* null, %runtime._defer** %deferPtr, align 4
+  %deferframe.buf = alloca %runtime.deferFrame, align 4
+  %0 = call i8* @llvm.stacksave()
+  call void @runtime.setupDeferFrame(%runtime.deferFrame* nonnull %deferframe.buf, i8* %0, i8* undef) #3
+  %defer.alloca.repack = getelementptr inbounds { i32, %runtime._defer* }, { i32, %runtime._defer* }* %defer.alloca, i32 0, i32 0
+  store i32 0, i32* %defer.alloca.repack, align 4
+  %defer.alloca.repack16 = getelementptr inbounds { i32, %runtime._defer* }, { i32, %runtime._defer* }* %defer.alloca, i32 0, i32 1
+  store %runtime._defer* null, %runtime._defer** %defer.alloca.repack16, align 4
+  %1 = bitcast %runtime._defer** %deferPtr to { i32, %runtime._defer* }**
+  store { i32, %runtime._defer* }* %defer.alloca, { i32, %runtime._defer* }** %1, align 4
+  %setjmp = call i32 asm "\0Amovs r0, #0\0Amov r2, pc\0Astr r2, [r1, #4]", "={r0},{r1},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{lr},~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{cpsr},~{memory}"(%runtime.deferFrame* nonnull %deferframe.buf) #4
+  %setjmp.result = icmp eq i32 %setjmp, 0
+  br i1 %setjmp.result, label %2, label %lpad
+
+2:                                                ; preds = %entry
+  call void @main.external(i8* undef) #3
+  br label %rundefers.loophead
+
+rundefers.loophead:                               ; preds = %4, %2
+  %3 = load %runtime._defer*, %runtime._defer** %deferPtr, align 4
+  %stackIsNil = icmp eq %runtime._defer* %3, null
+  br i1 %stackIsNil, label %rundefers.end, label %rundefers.loop
+
+rundefers.loop:                                   ; preds = %rundefers.loophead
+  %stack.next.gep = getelementptr inbounds %runtime._defer, %runtime._defer* %3, i32 0, i32 1
+  %stack.next = load %runtime._defer*, %runtime._defer** %stack.next.gep, align 4
+  store %runtime._defer* %stack.next, %runtime._defer** %deferPtr, align 4
+  %callback.gep = getelementptr inbounds %runtime._defer, %runtime._defer* %3, i32 0, i32 0
+  %callback = load i32, i32* %callback.gep, align 4
+  switch i32 %callback, label %rundefers.default [
+    i32 0, label %rundefers.callback0
+  ]
+
+rundefers.callback0:                              ; preds = %rundefers.loop
+  %setjmp1 = call i32 asm "\0Amovs r0, #0\0Amov r2, pc\0Astr r2, [r1, #4]", "={r0},{r1},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{lr},~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{cpsr},~{memory}"(%runtime.deferFrame* nonnull %deferframe.buf) #4
+  %setjmp.result2 = icmp eq i32 %setjmp1, 0
+  br i1 %setjmp.result2, label %4, label %lpad
+
+4:                                                ; preds = %rundefers.callback0
+  call void @"main.deferSimple$1"(i8* undef)
+  br label %rundefers.loophead
+
+rundefers.default:                                ; preds = %rundefers.loop
+  unreachable
+
+rundefers.end:                                    ; preds = %rundefers.loophead
+  call void @runtime.destroyDeferFrame(%runtime.deferFrame* nonnull %deferframe.buf, i8* undef) #3
+  ret void
+
+recover:                                          ; preds = %rundefers.end3
+  call void @runtime.destroyDeferFrame(%runtime.deferFrame* nonnull %deferframe.buf, i8* undef) #3
+  ret void
+
+lpad:                                             ; preds = %rundefers.callback012, %rundefers.callback0, %entry
+  br label %rundefers.loophead6
+
+rundefers.loophead6:                              ; preds = %6, %lpad
+  %5 = load %runtime._defer*, %runtime._defer** %deferPtr, align 4
+  %stackIsNil7 = icmp eq %runtime._defer* %5, null
+  br i1 %stackIsNil7, label %rundefers.end3, label %rundefers.loop5
+
+rundefers.loop5:                                  ; preds = %rundefers.loophead6
+  %stack.next.gep8 = getelementptr inbounds %runtime._defer, %runtime._defer* %5, i32 0, i32 1
+  %stack.next9 = load %runtime._defer*, %runtime._defer** %stack.next.gep8, align 4
+  store %runtime._defer* %stack.next9, %runtime._defer** %deferPtr, align 4
+  %callback.gep10 = getelementptr inbounds %runtime._defer, %runtime._defer* %5, i32 0, i32 0
+  %callback11 = load i32, i32* %callback.gep10, align 4
+  switch i32 %callback11, label %rundefers.default4 [
+    i32 0, label %rundefers.callback012
+  ]
+
+rundefers.callback012:                            ; preds = %rundefers.loop5
+  %setjmp14 = call i32 asm "\0Amovs r0, #0\0Amov r2, pc\0Astr r2, [r1, #4]", "={r0},{r1},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{lr},~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{cpsr},~{memory}"(%runtime.deferFrame* nonnull %deferframe.buf) #4
+  %setjmp.result15 = icmp eq i32 %setjmp14, 0
+  br i1 %setjmp.result15, label %6, label %lpad
+
+6:                                                ; preds = %rundefers.callback012
+  call void @"main.deferSimple$1"(i8* undef)
+  br label %rundefers.loophead6
+
+rundefers.default4:                               ; preds = %rundefers.loop5
+  unreachable
+
+rundefers.end3:                                   ; preds = %rundefers.loophead6
+  br label %recover
+}
+
+; Function Attrs: nofree nosync nounwind willreturn
+declare i8* @llvm.stacksave() #2
+
+declare void @runtime.setupDeferFrame(%runtime.deferFrame* dereferenceable_or_null(24), i8*, i8*) #0
+
+; Function Attrs: nounwind
+define internal void @"main.deferSimple$1"(i8* %context) unnamed_addr #1 {
+entry:
+  call void @runtime.printint32(i32 3, i8* undef) #3
+  ret void
+}
+
+declare void @runtime.destroyDeferFrame(%runtime.deferFrame* dereferenceable_or_null(24), i8*) #0
+
+declare void @runtime.printint32(i32, i8*) #0
+
+; Function Attrs: nounwind
+define hidden void @main.deferMultiple(i8* %context) unnamed_addr #1 {
+entry:
+  %defer.alloca2 = alloca { i32, %runtime._defer* }, align 4
+  %defer.alloca = alloca { i32, %runtime._defer* }, align 4
+  %deferPtr = alloca %runtime._defer*, align 4
+  store %runtime._defer* null, %runtime._defer** %deferPtr, align 4
+  %deferframe.buf = alloca %runtime.deferFrame, align 4
+  %0 = call i8* @llvm.stacksave()
+  call void @runtime.setupDeferFrame(%runtime.deferFrame* nonnull %deferframe.buf, i8* %0, i8* undef) #3
+  %defer.alloca.repack = getelementptr inbounds { i32, %runtime._defer* }, { i32, %runtime._defer* }* %defer.alloca, i32 0, i32 0
+  store i32 0, i32* %defer.alloca.repack, align 4
+  %defer.alloca.repack26 = getelementptr inbounds { i32, %runtime._defer* }, { i32, %runtime._defer* }* %defer.alloca, i32 0, i32 1
+  store %runtime._defer* null, %runtime._defer** %defer.alloca.repack26, align 4
+  %1 = bitcast %runtime._defer** %deferPtr to { i32, %runtime._defer* }**
+  store { i32, %runtime._defer* }* %defer.alloca, { i32, %runtime._defer* }** %1, align 4
+  %defer.alloca2.repack = getelementptr inbounds { i32, %runtime._defer* }, { i32, %runtime._defer* }* %defer.alloca2, i32 0, i32 0
+  store i32 1, i32* %defer.alloca2.repack, align 4
+  %defer.alloca2.repack27 = getelementptr inbounds { i32, %runtime._defer* }, { i32, %runtime._defer* }* %defer.alloca2, i32 0, i32 1
+  %2 = bitcast %runtime._defer** %defer.alloca2.repack27 to { i32, %runtime._defer* }**
+  store { i32, %runtime._defer* }* %defer.alloca, { i32, %runtime._defer* }** %2, align 4
+  %3 = bitcast %runtime._defer** %deferPtr to { i32, %runtime._defer* }**
+  store { i32, %runtime._defer* }* %defer.alloca2, { i32, %runtime._defer* }** %3, align 4
+  %setjmp = call i32 asm "\0Amovs r0, #0\0Amov r2, pc\0Astr r2, [r1, #4]", "={r0},{r1},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{lr},~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{cpsr},~{memory}"(%runtime.deferFrame* nonnull %deferframe.buf) #4
+  %setjmp.result = icmp eq i32 %setjmp, 0
+  br i1 %setjmp.result, label %4, label %lpad
+
+4:                                                ; preds = %entry
+  call void @main.external(i8* undef) #3
+  br label %rundefers.loophead
+
+rundefers.loophead:                               ; preds = %7, %6, %4
+  %5 = load %runtime._defer*, %runtime._defer** %deferPtr, align 4
+  %stackIsNil = icmp eq %runtime._defer* %5, null
+  br i1 %stackIsNil, label %rundefers.end, label %rundefers.loop
+
+rundefers.loop:                                   ; preds = %rundefers.loophead
+  %stack.next.gep = getelementptr inbounds %runtime._defer, %runtime._defer* %5, i32 0, i32 1
+  %stack.next = load %runtime._defer*, %runtime._defer** %stack.next.gep, align 4
+  store %runtime._defer* %stack.next, %runtime._defer** %deferPtr, align 4
+  %callback.gep = getelementptr inbounds %runtime._defer, %runtime._defer* %5, i32 0, i32 0
+  %callback = load i32, i32* %callback.gep, align 4
+  switch i32 %callback, label %rundefers.default [
+    i32 0, label %rundefers.callback0
+    i32 1, label %rundefers.callback1
+  ]
+
+rundefers.callback0:                              ; preds = %rundefers.loop
+  %setjmp4 = call i32 asm "\0Amovs r0, #0\0Amov r2, pc\0Astr r2, [r1, #4]", "={r0},{r1},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{lr},~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{cpsr},~{memory}"(%runtime.deferFrame* nonnull %deferframe.buf) #4
+  %setjmp.result5 = icmp eq i32 %setjmp4, 0
+  br i1 %setjmp.result5, label %6, label %lpad
+
+6:                                                ; preds = %rundefers.callback0
+  call void @"main.deferMultiple$1"(i8* undef)
+  br label %rundefers.loophead
+
+rundefers.callback1:                              ; preds = %rundefers.loop
+  %setjmp7 = call i32 asm "\0Amovs r0, #0\0Amov r2, pc\0Astr r2, [r1, #4]", "={r0},{r1},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{lr},~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{cpsr},~{memory}"(%runtime.deferFrame* nonnull %deferframe.buf) #4
+  %setjmp.result8 = icmp eq i32 %setjmp7, 0
+  br i1 %setjmp.result8, label %7, label %lpad
+
+7:                                                ; preds = %rundefers.callback1
+  call void @"main.deferMultiple$2"(i8* undef)
+  br label %rundefers.loophead
+
+rundefers.default:                                ; preds = %rundefers.loop
+  unreachable
+
+rundefers.end:                                    ; preds = %rundefers.loophead
+  call void @runtime.destroyDeferFrame(%runtime.deferFrame* nonnull %deferframe.buf, i8* undef) #3
+  ret void
+
+recover:                                          ; preds = %rundefers.end9
+  call void @runtime.destroyDeferFrame(%runtime.deferFrame* nonnull %deferframe.buf, i8* undef) #3
+  ret void
+
+lpad:                                             ; preds = %rundefers.callback122, %rundefers.callback018, %rundefers.callback1, %rundefers.callback0, %entry
+  br label %rundefers.loophead12
+
+rundefers.loophead12:                             ; preds = %10, %9, %lpad
+  %8 = load %runtime._defer*, %runtime._defer** %deferPtr, align 4
+  %stackIsNil13 = icmp eq %runtime._defer* %8, null
+  br i1 %stackIsNil13, label %rundefers.end9, label %rundefers.loop11
+
+rundefers.loop11:                                 ; preds = %rundefers.loophead12
+  %stack.next.gep14 = getelementptr inbounds %runtime._defer, %runtime._defer* %8, i32 0, i32 1
+  %stack.next15 = load %runtime._defer*, %runtime._defer** %stack.next.gep14, align 4
+  store %runtime._defer* %stack.next15, %runtime._defer** %deferPtr, align 4
+  %callback.gep16 = getelementptr inbounds %runtime._defer, %runtime._defer* %8, i32 0, i32 0
+  %callback17 = load i32, i32* %callback.gep16, align 4
+  switch i32 %callback17, label %rundefers.default10 [
+    i32 0, label %rundefers.callback018
+    i32 1, label %rundefers.callback122
+  ]
+
+rundefers.callback018:                            ; preds = %rundefers.loop11
+  %setjmp20 = call i32 asm "\0Amovs r0, #0\0Amov r2, pc\0Astr r2, [r1, #4]", "={r0},{r1},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{lr},~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{cpsr},~{memory}"(%runtime.deferFrame* nonnull %deferframe.buf) #4
+  %setjmp.result21 = icmp eq i32 %setjmp20, 0
+  br i1 %setjmp.result21, label %9, label %lpad
+
+9:                                                ; preds = %rundefers.callback018
+  call void @"main.deferMultiple$1"(i8* undef)
+  br label %rundefers.loophead12
+
+rundefers.callback122:                            ; preds = %rundefers.loop11
+  %setjmp24 = call i32 asm "\0Amovs r0, #0\0Amov r2, pc\0Astr r2, [r1, #4]", "={r0},{r1},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{lr},~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{cpsr},~{memory}"(%runtime.deferFrame* nonnull %deferframe.buf) #4
+  %setjmp.result25 = icmp eq i32 %setjmp24, 0
+  br i1 %setjmp.result25, label %10, label %lpad
+
+10:                                               ; preds = %rundefers.callback122
+  call void @"main.deferMultiple$2"(i8* undef)
+  br label %rundefers.loophead12
+
+rundefers.default10:                              ; preds = %rundefers.loop11
+  unreachable
+
+rundefers.end9:                                   ; preds = %rundefers.loophead12
+  br label %recover
+}
+
+; Function Attrs: nounwind
+define internal void @"main.deferMultiple$1"(i8* %context) unnamed_addr #1 {
+entry:
+  call void @runtime.printint32(i32 3, i8* undef) #3
+  ret void
+}
+
+; Function Attrs: nounwind
+define internal void @"main.deferMultiple$2"(i8* %context) unnamed_addr #1 {
+entry:
+  call void @runtime.printint32(i32 5, i8* undef) #3
+  ret void
+}
+
+attributes #0 = { "target-features"="+armv7-m,+hwdiv,+soft-float,+strict-align,+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,+strict-align,+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 = { nofree nosync nounwind willreturn }
+attributes #3 = { nounwind }
+attributes #4 = { nounwind returns_twice }

compiler/testdata/defer.go

@@ -0,0 +1,20 @@
+package main
+
+func external()
+
+func deferSimple() {
+	defer func() {
+		print(3)
+	}()
+	external()
+}
+
+func deferMultiple() {
+	defer func() {
+		print(3)
+	}()
+	defer func() {
+		print(5)
+	}()
+	external()
+}

compiler/testdata/float.ll

@@ -3,18 +3,18 @@ source_filename = "float.go"
 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"
 
-declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*)
+declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*) #0
 
-declare void @runtime.trackPointer(i8* nocapture readonly, i8*)
+declare void @runtime.trackPointer(i8* nocapture readonly, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.init(i8* %context) unnamed_addr #0 {
+define hidden void @main.init(i8* %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.f32tou32(float %v, i8* %context) unnamed_addr #0 {
+define hidden i32 @main.f32tou32(float %v, i8* %context) unnamed_addr #1 {
 entry:
   %positive = fcmp oge float %v, 0.000000e+00
   %withinmax = fcmp ole float %v, 0x41EFFFFFC0000000
@@ -26,25 +26,25 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden float @main.maxu32f(i8* %context) unnamed_addr #0 {
+define hidden float @main.maxu32f(i8* %context) unnamed_addr #1 {
 entry:
   ret float 0x41F0000000000000
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.maxu32tof32(i8* %context) unnamed_addr #0 {
+define hidden i32 @main.maxu32tof32(i8* %context) unnamed_addr #1 {
 entry:
   ret i32 -1
 }
 
 ; Function Attrs: nounwind
-define hidden { i32, i32, i32, i32 } @main.inftoi32(i8* %context) unnamed_addr #0 {
+define hidden { i32, i32, i32, i32 } @main.inftoi32(i8* %context) unnamed_addr #1 {
 entry:
   ret { i32, i32, i32, i32 } { i32 -1, i32 0, i32 2147483647, i32 -2147483648 }
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.u32tof32tou32(i32 %v, i8* %context) unnamed_addr #0 {
+define hidden i32 @main.u32tof32tou32(i32 %v, i8* %context) unnamed_addr #1 {
 entry:
   %0 = uitofp i32 %v to float
   %withinmax = fcmp ole float %0, 0x41EFFFFFC0000000
@@ -54,7 +54,7 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden float @main.f32tou32tof32(float %v, i8* %context) unnamed_addr #0 {
+define hidden float @main.f32tou32tof32(float %v, i8* %context) unnamed_addr #1 {
 entry:
   %positive = fcmp oge float %v, 0.000000e+00
   %withinmax = fcmp ole float %v, 0x41EFFFFFC0000000
@@ -67,7 +67,7 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden i8 @main.f32tou8(float %v, i8* %context) unnamed_addr #0 {
+define hidden i8 @main.f32tou8(float %v, i8* %context) unnamed_addr #1 {
 entry:
   %positive = fcmp oge float %v, 0.000000e+00
   %withinmax = fcmp ole float %v, 2.550000e+02
@@ -79,7 +79,7 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden i8 @main.f32toi8(float %v, i8* %context) unnamed_addr #0 {
+define hidden i8 @main.f32toi8(float %v, i8* %context) unnamed_addr #1 {
 entry:
   %abovemin = fcmp oge float %v, -1.280000e+02
   %belowmax = fcmp ole float %v, 1.270000e+02
@@ -92,4 +92,5 @@ entry:
   ret i8 %0
 }
 
-attributes #0 = { nounwind }
+attributes #0 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #1 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }

compiler/testdata/func.ll

@@ -3,45 +3,47 @@ source_filename = "func.go"
 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"
 
-declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*)
+declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*) #0
 
-declare void @runtime.trackPointer(i8* nocapture readonly, i8*)
+declare void @runtime.trackPointer(i8* nocapture readonly, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.init(i8* %context) unnamed_addr #0 {
+define hidden void @main.init(i8* %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.foo(i8* %callback.context, void ()* %callback.funcptr, i8* %context) unnamed_addr #0 {
+define hidden void @main.foo(i8* %callback.context, void ()* %callback.funcptr, i8* %context) unnamed_addr #1 {
 entry:
   %0 = icmp eq void ()* %callback.funcptr, null
   br i1 %0, label %fpcall.throw, label %fpcall.next
 
-fpcall.throw:                                     ; preds = %entry
-  call void @runtime.nilPanic(i8* undef) #0
-  unreachable
-
 fpcall.next:                                      ; preds = %entry
   %1 = bitcast void ()* %callback.funcptr to void (i32, i8*)*
-  call void %1(i32 3, i8* %callback.context) #0
+  call void %1(i32 3, i8* %callback.context) #2
   ret void
+
+fpcall.throw:                                     ; preds = %entry
+  call void @runtime.nilPanic(i8* undef) #2
+  unreachable
 }
 
-declare void @runtime.nilPanic(i8*)
+declare void @runtime.nilPanic(i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.bar(i8* %context) unnamed_addr #0 {
+define hidden void @main.bar(i8* %context) unnamed_addr #1 {
 entry:
   call void @main.foo(i8* undef, void ()* bitcast (void (i32, i8*)* @main.someFunc to void ()*), i8* undef)
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.someFunc(i32 %arg0, i8* %context) unnamed_addr #0 {
+define hidden void @main.someFunc(i32 %arg0, i8* %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
-attributes #0 = { nounwind }
+attributes #0 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #1 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #2 = { nounwind }

compiler/testdata/gc.ll

@@ -26,91 +26,91 @@ target triple = "wasm32-unknown-wasi"
 @"reflect/types.type:basic:complex128" = linkonce_odr constant %runtime.typecodeID { %runtime.typecodeID* null, i32 0, %runtime.interfaceMethodInfo* null, %runtime.typecodeID* @"reflect/types.type:pointer:basic:complex128", i32 0 }
 @"reflect/types.type:pointer:basic:complex128" = linkonce_odr constant %runtime.typecodeID { %runtime.typecodeID* @"reflect/types.type:basic:complex128", i32 0, %runtime.interfaceMethodInfo* null, %runtime.typecodeID* null, i32 0 }
 
-declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*)
+declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*) #0
 
-declare void @runtime.trackPointer(i8* nocapture readonly, i8*)
+declare void @runtime.trackPointer(i8* nocapture readonly, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.init(i8* %context) unnamed_addr #0 {
+define hidden void @main.init(i8* %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.newScalar(i8* %context) unnamed_addr #0 {
+define hidden void @main.newScalar(i8* %context) unnamed_addr #1 {
 entry:
-  %new = call i8* @runtime.alloc(i32 1, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
-  call void @runtime.trackPointer(i8* nonnull %new, i8* undef) #0
+  %new = call i8* @runtime.alloc(i32 1, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #2
+  call void @runtime.trackPointer(i8* nonnull %new, i8* undef) #2
   store i8* %new, i8** @main.scalar1, align 4
-  %new1 = call i8* @runtime.alloc(i32 4, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
-  call void @runtime.trackPointer(i8* nonnull %new1, i8* undef) #0
+  %new1 = call i8* @runtime.alloc(i32 4, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #2
+  call void @runtime.trackPointer(i8* nonnull %new1, i8* undef) #2
   store i8* %new1, i8** bitcast (i32** @main.scalar2 to i8**), align 4
-  %new2 = call i8* @runtime.alloc(i32 8, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
-  call void @runtime.trackPointer(i8* nonnull %new2, i8* undef) #0
+  %new2 = call i8* @runtime.alloc(i32 8, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #2
+  call void @runtime.trackPointer(i8* nonnull %new2, i8* undef) #2
   store i8* %new2, i8** bitcast (i64** @main.scalar3 to i8**), align 4
-  %new3 = call i8* @runtime.alloc(i32 4, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
-  call void @runtime.trackPointer(i8* nonnull %new3, i8* undef) #0
+  %new3 = call i8* @runtime.alloc(i32 4, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #2
+  call void @runtime.trackPointer(i8* nonnull %new3, i8* undef) #2
   store i8* %new3, i8** bitcast (float** @main.scalar4 to i8**), align 4
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.newArray(i8* %context) unnamed_addr #0 {
+define hidden void @main.newArray(i8* %context) unnamed_addr #1 {
 entry:
-  %new = call i8* @runtime.alloc(i32 3, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
-  call void @runtime.trackPointer(i8* nonnull %new, i8* undef) #0
+  %new = call i8* @runtime.alloc(i32 3, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #2
+  call void @runtime.trackPointer(i8* nonnull %new, i8* undef) #2
   store i8* %new, i8** bitcast ([3 x i8]** @main.array1 to i8**), align 4
-  %new1 = call i8* @runtime.alloc(i32 71, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
-  call void @runtime.trackPointer(i8* nonnull %new1, i8* undef) #0
+  %new1 = call i8* @runtime.alloc(i32 71, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #2
+  call void @runtime.trackPointer(i8* nonnull %new1, i8* undef) #2
   store i8* %new1, i8** bitcast ([71 x i8]** @main.array2 to i8**), align 4
-  %new2 = call i8* @runtime.alloc(i32 12, i8* nonnull inttoptr (i32 67 to i8*), i8* undef) #0
-  call void @runtime.trackPointer(i8* nonnull %new2, i8* undef) #0
+  %new2 = call i8* @runtime.alloc(i32 12, i8* nonnull inttoptr (i32 67 to i8*), i8* undef) #2
+  call void @runtime.trackPointer(i8* nonnull %new2, i8* undef) #2
   store i8* %new2, i8** bitcast ([3 x i8*]** @main.array3 to i8**), align 4
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.newStruct(i8* %context) unnamed_addr #0 {
+define hidden void @main.newStruct(i8* %context) unnamed_addr #1 {
 entry:
-  %new = call i8* @runtime.alloc(i32 0, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
-  call void @runtime.trackPointer(i8* nonnull %new, i8* undef) #0
+  %new = call i8* @runtime.alloc(i32 0, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #2
+  call void @runtime.trackPointer(i8* nonnull %new, i8* undef) #2
   store i8* %new, i8** bitcast ({}** @main.struct1 to i8**), align 4
-  %new1 = call i8* @runtime.alloc(i32 8, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
-  call void @runtime.trackPointer(i8* nonnull %new1, i8* undef) #0
+  %new1 = call i8* @runtime.alloc(i32 8, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #2
+  call void @runtime.trackPointer(i8* nonnull %new1, i8* undef) #2
   store i8* %new1, i8** bitcast ({ i32, i32 }** @main.struct2 to i8**), align 4
-  %new2 = call i8* @runtime.alloc(i32 248, i8* bitcast ({ i32, [8 x i8] }* @"runtime/gc.layout:62-2000000000000001" to i8*), i8* undef) #0
-  call void @runtime.trackPointer(i8* nonnull %new2, i8* undef) #0
+  %new2 = call i8* @runtime.alloc(i32 248, i8* bitcast ({ i32, [8 x i8] }* @"runtime/gc.layout:62-2000000000000001" to i8*), i8* undef) #2
+  call void @runtime.trackPointer(i8* nonnull %new2, i8* undef) #2
   store i8* %new2, i8** bitcast ({ i8*, [60 x i32], i8* }** @main.struct3 to i8**), align 4
-  %new3 = call i8* @runtime.alloc(i32 248, i8* bitcast ({ i32, [8 x i8] }* @"runtime/gc.layout:62-0001" to i8*), i8* undef) #0
-  call void @runtime.trackPointer(i8* nonnull %new3, i8* undef) #0
+  %new3 = call i8* @runtime.alloc(i32 248, i8* bitcast ({ i32, [8 x i8] }* @"runtime/gc.layout:62-0001" to i8*), i8* undef) #2
+  call void @runtime.trackPointer(i8* nonnull %new3, i8* undef) #2
   store i8* %new3, i8** bitcast ({ i8*, [61 x i32] }** @main.struct4 to i8**), align 4
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden { i8*, void ()* }* @main.newFuncValue(i8* %context) unnamed_addr #0 {
+define hidden { i8*, void ()* }* @main.newFuncValue(i8* %context) unnamed_addr #1 {
 entry:
-  %new = call i8* @runtime.alloc(i32 8, i8* nonnull inttoptr (i32 197 to i8*), i8* undef) #0
+  %new = call i8* @runtime.alloc(i32 8, i8* nonnull inttoptr (i32 197 to i8*), i8* undef) #2
   %0 = bitcast i8* %new to { i8*, void ()* }*
-  call void @runtime.trackPointer(i8* nonnull %new, i8* undef) #0
+  call void @runtime.trackPointer(i8* nonnull %new, i8* undef) #2
   ret { i8*, void ()* }* %0
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.makeSlice(i8* %context) unnamed_addr #0 {
+define hidden void @main.makeSlice(i8* %context) unnamed_addr #1 {
 entry:
-  %makeslice = call i8* @runtime.alloc(i32 5, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
-  call void @runtime.trackPointer(i8* nonnull %makeslice, i8* undef) #0
+  %makeslice = call i8* @runtime.alloc(i32 5, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #2
+  call void @runtime.trackPointer(i8* nonnull %makeslice, i8* undef) #2
   store i8* %makeslice, i8** getelementptr inbounds ({ i8*, i32, i32 }, { i8*, i32, i32 }* @main.slice1, i32 0, i32 0), align 8
   store i32 5, i32* getelementptr inbounds ({ i8*, i32, i32 }, { i8*, i32, i32 }* @main.slice1, i32 0, i32 1), align 4
   store i32 5, i32* getelementptr inbounds ({ i8*, i32, i32 }, { i8*, i32, i32 }* @main.slice1, i32 0, i32 2), align 8
-  %makeslice1 = call i8* @runtime.alloc(i32 20, i8* nonnull inttoptr (i32 67 to i8*), i8* undef) #0
-  call void @runtime.trackPointer(i8* nonnull %makeslice1, i8* undef) #0
+  %makeslice1 = call i8* @runtime.alloc(i32 20, i8* nonnull inttoptr (i32 67 to i8*), i8* undef) #2
+  call void @runtime.trackPointer(i8* nonnull %makeslice1, i8* undef) #2
   store i8* %makeslice1, i8** bitcast ({ i32**, i32, i32 }* @main.slice2 to i8**), align 8
   store i32 5, i32* getelementptr inbounds ({ i32**, i32, i32 }, { i32**, i32, i32 }* @main.slice2, i32 0, i32 1), align 4
   store i32 5, i32* getelementptr inbounds ({ i32**, i32, i32 }, { i32**, i32, i32 }* @main.slice2, i32 0, i32 2), align 8
-  %makeslice3 = call i8* @runtime.alloc(i32 60, i8* nonnull inttoptr (i32 71 to i8*), i8* undef) #0
-  call void @runtime.trackPointer(i8* nonnull %makeslice3, i8* undef) #0
+  %makeslice3 = call i8* @runtime.alloc(i32 60, i8* nonnull inttoptr (i32 71 to i8*), i8* undef) #2
+  call void @runtime.trackPointer(i8* nonnull %makeslice3, i8* undef) #2
   store i8* %makeslice3, i8** bitcast ({ { i8*, i32, i32 }*, i32, i32 }* @main.slice3 to i8**), align 8
   store i32 5, i32* getelementptr inbounds ({ { i8*, i32, i32 }*, i32, i32 }, { { i8*, i32, i32 }*, i32, i32 }* @main.slice3, i32 0, i32 1), align 4
   store i32 5, i32* getelementptr inbounds ({ { i8*, i32, i32 }*, i32, i32 }, { { i8*, i32, i32 }*, i32, i32 }* @main.slice3, i32 0, i32 2), align 8
@@ -118,18 +118,20 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden %runtime._interface @main.makeInterface(double %v.r, double %v.i, i8* %context) unnamed_addr #0 {
+define hidden %runtime._interface @main.makeInterface(double %v.r, double %v.i, i8* %context) unnamed_addr #1 {
 entry:
-  %0 = call i8* @runtime.alloc(i32 16, i8* null, i8* undef) #0
-  call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #0
+  %0 = call i8* @runtime.alloc(i32 16, i8* null, i8* undef) #2
+  call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #2
   %.repack = bitcast i8* %0 to double*
   store double %v.r, double* %.repack, align 8
   %.repack1 = getelementptr inbounds i8, i8* %0, i32 8
   %1 = bitcast i8* %.repack1 to double*
   store double %v.i, double* %1, align 8
   %2 = insertvalue %runtime._interface { i32 ptrtoint (%runtime.typecodeID* @"reflect/types.type:basic:complex128" to i32), i8* undef }, i8* %0, 1
-  call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #0
+  call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #2
   ret %runtime._interface %2
 }
 
-attributes #0 = { nounwind }
+attributes #0 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #1 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #2 = { nounwind }

compiler/testdata/generics.go

@@ -0,0 +1,30 @@
+package main
+
+import "unsafe"
+
+type Coord interface {
+	int | float32
+}
+
+type Point[T Coord] struct {
+	X, Y T
+}
+
+func Add[T Coord](a, b Point[T]) Point[T] {
+	checkSize(unsafe.Alignof(a))
+	checkSize(unsafe.Sizeof(a))
+	return Point[T]{
+		X: a.X + b.X,
+		Y: a.Y + b.Y,
+	}
+}
+
+func main() {
+	var af, bf Point[float32]
+	Add(af, bf)
+
+	var ai, bi Point[int]
+	Add(ai, bi)
+}
+
+func checkSize(uintptr)

compiler/testdata/generics.ll

@@ -0,0 +1,259 @@
+; ModuleID = 'generics.go'
+source_filename = "generics.go"
+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[int]" = type { i32, i32 }
+%"main.Point[float32]" = type { float, float }
+
+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(i8* %context) unnamed_addr #1 {
+entry:
+  ret void
+}
+
+; Function Attrs: nounwind
+define hidden void @main.main(i8* %context) unnamed_addr #1 {
+entry:
+  %bi = alloca %"main.Point[int]", align 8
+  %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, i8* %context) unnamed_addr #1 {
+entry:
+  %complit = alloca %"main.Point[float32]", align 8
+  %b = alloca %"main.Point[float32]", align 8
+  %a = alloca %"main.Point[float32]", align 8
+  %a.repack = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %a, i32 0, i32 0
+  store float 0.000000e+00, float* %a.repack, align 8
+  %a.repack9 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %a, i32 0, i32 1
+  store float 0.000000e+00, float* %a.repack9, align 4
+  %0 = bitcast %"main.Point[float32]"* %a to i8*
+  call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #2
+  %a.repack10 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %a, i32 0, i32 0
+  store float %a.X, float* %a.repack10, align 8
+  %a.repack11 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %a, i32 0, i32 1
+  store float %a.Y, float* %a.repack11, align 4
+  %b.repack = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %b, i32 0, i32 0
+  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
+  %4 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %b, i32 0, i32 0
+  %5 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %a, i32 0, i32 0
+  %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
+  %9 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %b, i32 0, i32 1
+  %10 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %a, i32 0, i32 1
+  %11 = load float, float* %10, 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 %8, float* %3, align 8
+  br i1 false, label %store.throw7, label %store.next8
+
+store.next8:                                      ; preds = %store.next
+  %13 = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %complit, i32 0, i32 1
+  %14 = fadd float %11, %12
+  store float %14, float* %13, align 4
+  %.elt = getelementptr inbounds %"main.Point[float32]", %"main.Point[float32]"* %complit, i32 0, i32 0
+  %.unpack = load float, float* %.elt, align 8
+  %15 = insertvalue %"main.Point[float32]" undef, float %.unpack, 0
+  %16 = insertvalue %"main.Point[float32]" %15, float %14, 1
+  ret %"main.Point[float32]" %16
+
+deref.throw:                                      ; preds = %entry
+  unreachable
+
+deref.throw1:                                     ; preds = %deref.next
+  unreachable
+
+deref.throw3:                                     ; preds = %deref.next2
+  unreachable
+
+deref.throw5:                                     ; preds = %deref.next4
+  unreachable
+
+store.throw:                                      ; preds = %deref.next6
+  unreachable
+
+store.throw7:                                     ; preds = %store.next
+  unreachable
+}
+
+declare void @main.checkSize(i32, i8*) #0
+
+declare void @runtime.nilPanic(i8*) #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, i8* %context) unnamed_addr #1 {
+entry:
+  %complit = alloca %"main.Point[int]", align 8
+  %b = alloca %"main.Point[int]", align 8
+  %a = alloca %"main.Point[int]", align 8
+  %a.repack = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %a, i32 0, i32 0
+  store i32 0, i32* %a.repack, align 8
+  %a.repack9 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %a, i32 0, i32 1
+  store i32 0, i32* %a.repack9, align 4
+  %0 = bitcast %"main.Point[int]"* %a to i8*
+  call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #2
+  %a.repack10 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %a, i32 0, i32 0
+  store i32 %a.X, i32* %a.repack10, align 8
+  %a.repack11 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %a, i32 0, i32 1
+  store i32 %a.Y, i32* %a.repack11, align 4
+  %b.repack = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %b, i32 0, i32 0
+  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
+  %4 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %b, i32 0, i32 0
+  %5 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %a, i32 0, i32 0
+  %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
+  %9 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %b, i32 0, i32 1
+  %10 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %a, i32 0, i32 1
+  %11 = load i32, i32* %10, 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 %8, i32* %3, align 8
+  br i1 false, label %store.throw7, label %store.next8
+
+store.next8:                                      ; preds = %store.next
+  %13 = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %complit, i32 0, i32 1
+  %14 = add i32 %11, %12
+  store i32 %14, i32* %13, align 4
+  %.elt = getelementptr inbounds %"main.Point[int]", %"main.Point[int]"* %complit, i32 0, i32 0
+  %.unpack = load i32, i32* %.elt, align 8
+  %15 = insertvalue %"main.Point[int]" undef, i32 %.unpack, 0
+  %16 = insertvalue %"main.Point[int]" %15, i32 %14, 1
+  ret %"main.Point[int]" %16
+
+deref.throw:                                      ; preds = %entry
+  unreachable
+
+deref.throw1:                                     ; preds = %deref.next
+  unreachable
+
+deref.throw3:                                     ; preds = %deref.next2
+  unreachable
+
+deref.throw5:                                     ; preds = %deref.next4
+  unreachable
+
+store.throw:                                      ; preds = %deref.next6
+  unreachable
+
+store.throw7:                                     ; preds = %store.next
+  unreachable
+}
+
+attributes #0 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #1 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #2 = { nounwind }

compiler/testdata/go1.17.go

@@ -1,41 +0,0 @@
-package main
-
-// Test changes to the language introduced in Go 1.17.
-// For details, see: https://tip.golang.org/doc/go1.17#language
-// These tests should be merged into the regular slice tests once Go 1.17 is the
-// minimun Go version for TinyGo.
-
-import "unsafe"
-
-func Add32(p unsafe.Pointer, len int) unsafe.Pointer {
-	return unsafe.Add(p, len)
-}
-
-func Add64(p unsafe.Pointer, len int64) unsafe.Pointer {
-	return unsafe.Add(p, len)
-}
-
-func SliceToArray(s []int) *[4]int {
-	return (*[4]int)(s)
-}
-
-func SliceToArrayConst() *[4]int {
-	s := make([]int, 6)
-	return (*[4]int)(s)
-}
-
-func SliceInt(ptr *int, len int) []int {
-	return unsafe.Slice(ptr, len)
-}
-
-func SliceUint16(ptr *byte, len uint16) []byte {
-	return unsafe.Slice(ptr, len)
-}
-
-func SliceUint64(ptr *int, len uint64) []int {
-	return unsafe.Slice(ptr, len)
-}
-
-func SliceInt64(ptr *int, len int64) []int {
-	return unsafe.Slice(ptr, len)
-}

compiler/testdata/go1.17.ll

@@ -1,159 +0,0 @@
-; ModuleID = 'go1.17.go'
-source_filename = "go1.17.go"
-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"
-
-declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*)
-
-declare void @runtime.trackPointer(i8* nocapture readonly, i8*)
-
-; Function Attrs: nounwind
-define hidden void @main.init(i8* %context) unnamed_addr #0 {
-entry:
-  ret void
-}
-
-; Function Attrs: nounwind
-define hidden i8* @main.Add32(i8* %p, i32 %len, i8* %context) unnamed_addr #0 {
-entry:
-  %0 = getelementptr i8, i8* %p, i32 %len
-  call void @runtime.trackPointer(i8* %0, i8* undef) #0
-  ret i8* %0
-}
-
-; Function Attrs: nounwind
-define hidden i8* @main.Add64(i8* %p, i64 %len, i8* %context) unnamed_addr #0 {
-entry:
-  %0 = trunc i64 %len to i32
-  %1 = getelementptr i8, i8* %p, i32 %0
-  call void @runtime.trackPointer(i8* %1, i8* undef) #0
-  ret i8* %1
-}
-
-; Function Attrs: nounwind
-define hidden [4 x i32]* @main.SliceToArray(i32* %s.data, i32 %s.len, i32 %s.cap, i8* %context) unnamed_addr #0 {
-entry:
-  %0 = icmp ult i32 %s.len, 4
-  br i1 %0, label %slicetoarray.throw, label %slicetoarray.next
-
-slicetoarray.throw:                               ; preds = %entry
-  call void @runtime.sliceToArrayPointerPanic(i8* undef) #0
-  unreachable
-
-slicetoarray.next:                                ; preds = %entry
-  %1 = bitcast i32* %s.data to [4 x i32]*
-  ret [4 x i32]* %1
-}
-
-declare void @runtime.sliceToArrayPointerPanic(i8*)
-
-; Function Attrs: nounwind
-define hidden [4 x i32]* @main.SliceToArrayConst(i8* %context) unnamed_addr #0 {
-entry:
-  %makeslice = call i8* @runtime.alloc(i32 24, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
-  call void @runtime.trackPointer(i8* nonnull %makeslice, i8* undef) #0
-  br i1 false, label %slicetoarray.throw, label %slicetoarray.next
-
-slicetoarray.throw:                               ; preds = %entry
-  unreachable
-
-slicetoarray.next:                                ; preds = %entry
-  %0 = bitcast i8* %makeslice to [4 x i32]*
-  ret [4 x i32]* %0
-}
-
-; Function Attrs: nounwind
-define hidden { i32*, i32, i32 } @main.SliceInt(i32* dereferenceable_or_null(4) %ptr, i32 %len, i8* %context) unnamed_addr #0 {
-entry:
-  %0 = icmp ugt i32 %len, 1073741823
-  %1 = icmp eq i32* %ptr, null
-  %2 = icmp ne i32 %len, 0
-  %3 = and i1 %1, %2
-  %4 = or i1 %3, %0
-  br i1 %4, label %unsafe.Slice.throw, label %unsafe.Slice.next
-
-unsafe.Slice.throw:                               ; preds = %entry
-  call void @runtime.unsafeSlicePanic(i8* undef) #0
-  unreachable
-
-unsafe.Slice.next:                                ; preds = %entry
-  %5 = insertvalue { i32*, i32, i32 } undef, i32* %ptr, 0
-  %6 = insertvalue { i32*, i32, i32 } %5, i32 %len, 1
-  %7 = insertvalue { i32*, i32, i32 } %6, i32 %len, 2
-  %8 = bitcast i32* %ptr to i8*
-  call void @runtime.trackPointer(i8* %8, i8* undef) #0
-  ret { i32*, i32, i32 } %7
-}
-
-declare void @runtime.unsafeSlicePanic(i8*)
-
-; Function Attrs: nounwind
-define hidden { i8*, i32, i32 } @main.SliceUint16(i8* dereferenceable_or_null(1) %ptr, i16 %len, i8* %context) unnamed_addr #0 {
-entry:
-  %0 = icmp eq i8* %ptr, null
-  %1 = icmp ne i16 %len, 0
-  %2 = and i1 %0, %1
-  br i1 %2, label %unsafe.Slice.throw, label %unsafe.Slice.next
-
-unsafe.Slice.throw:                               ; preds = %entry
-  call void @runtime.unsafeSlicePanic(i8* undef) #0
-  unreachable
-
-unsafe.Slice.next:                                ; preds = %entry
-  %3 = zext i16 %len to i32
-  %4 = insertvalue { i8*, i32, i32 } undef, i8* %ptr, 0
-  %5 = insertvalue { i8*, i32, i32 } %4, i32 %3, 1
-  %6 = insertvalue { i8*, i32, i32 } %5, i32 %3, 2
-  call void @runtime.trackPointer(i8* %ptr, i8* undef) #0
-  ret { i8*, i32, i32 } %6
-}
-
-; Function Attrs: nounwind
-define hidden { i32*, i32, i32 } @main.SliceUint64(i32* dereferenceable_or_null(4) %ptr, i64 %len, i8* %context) unnamed_addr #0 {
-entry:
-  %0 = icmp ugt i64 %len, 1073741823
-  %1 = icmp eq i32* %ptr, null
-  %2 = icmp ne i64 %len, 0
-  %3 = and i1 %1, %2
-  %4 = or i1 %3, %0
-  br i1 %4, label %unsafe.Slice.throw, label %unsafe.Slice.next
-
-unsafe.Slice.throw:                               ; preds = %entry
-  call void @runtime.unsafeSlicePanic(i8* undef) #0
-  unreachable
-
-unsafe.Slice.next:                                ; preds = %entry
-  %5 = trunc i64 %len to i32
-  %6 = insertvalue { i32*, i32, i32 } undef, i32* %ptr, 0
-  %7 = insertvalue { i32*, i32, i32 } %6, i32 %5, 1
-  %8 = insertvalue { i32*, i32, i32 } %7, i32 %5, 2
-  %9 = bitcast i32* %ptr to i8*
-  call void @runtime.trackPointer(i8* %9, i8* undef) #0
-  ret { i32*, i32, i32 } %8
-}
-
-; Function Attrs: nounwind
-define hidden { i32*, i32, i32 } @main.SliceInt64(i32* dereferenceable_or_null(4) %ptr, i64 %len, i8* %context) unnamed_addr #0 {
-entry:
-  %0 = icmp ugt i64 %len, 1073741823
-  %1 = icmp eq i32* %ptr, null
-  %2 = icmp ne i64 %len, 0
-  %3 = and i1 %1, %2
-  %4 = or i1 %3, %0
-  br i1 %4, label %unsafe.Slice.throw, label %unsafe.Slice.next
-
-unsafe.Slice.throw:                               ; preds = %entry
-  call void @runtime.unsafeSlicePanic(i8* undef) #0
-  unreachable
-
-unsafe.Slice.next:                                ; preds = %entry
-  %5 = trunc i64 %len to i32
-  %6 = insertvalue { i32*, i32, i32 } undef, i32* %ptr, 0
-  %7 = insertvalue { i32*, i32, i32 } %6, i32 %5, 1
-  %8 = insertvalue { i32*, i32, i32 } %7, i32 %5, 2
-  %9 = bitcast i32* %ptr to i8*
-  call void @runtime.trackPointer(i8* %9, i8* undef) #0
-  ret { i32*, i32, i32 } %8
-}
-
-attributes #0 = { nounwind }

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

@@ -5,59 +5,59 @@ target triple = "thumbv7m-unknown-unknown-eabi"
 
 %runtime.channel = type { i32, i32, i8, %runtime.channelBlockedList*, i32, i32, i32, i8* }
 %runtime.channelBlockedList = type { %runtime.channelBlockedList*, %"internal/task.Task"*, %runtime.chanSelectState*, { %runtime.channelBlockedList*, i32, i32 } }
-%"internal/task.Task" = type { %"internal/task.Task"*, i8*, i64, %"internal/task.gcData", %"internal/task.state" }
+%"internal/task.Task" = type { %"internal/task.Task"*, i8*, i64, %"internal/task.gcData", %"internal/task.state", i8* }
 %"internal/task.gcData" = type {}
 %"internal/task.state" = type { i32, i32* }
 %runtime.chanSelectState = type { %runtime.channel*, i8* }
 
 @"main$string" = internal unnamed_addr constant [4 x i8] c"test", align 1
 
-declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*)
+declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.init(i8* %context) unnamed_addr #0 {
+define hidden void @main.init(i8* %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.regularFunctionGoroutine(i8* %context) unnamed_addr #0 {
+define hidden void @main.regularFunctionGoroutine(i8* %context) unnamed_addr #1 {
 entry:
-  %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (void (i8*)* @"main.regularFunction$gowrapper" to i32), i8* undef) #0
-  call void @"internal/task.start"(i32 ptrtoint (void (i8*)* @"main.regularFunction$gowrapper" to i32), i8* nonnull inttoptr (i32 5 to i8*), i32 %stacksize, i8* undef) #0
+  %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (void (i8*)* @"main.regularFunction$gowrapper" to i32), i8* undef) #8
+  call void @"internal/task.start"(i32 ptrtoint (void (i8*)* @"main.regularFunction$gowrapper" to i32), i8* nonnull inttoptr (i32 5 to i8*), i32 %stacksize, i8* undef) #8
   ret void
 }
 
-declare void @main.regularFunction(i32, i8*)
+declare void @main.regularFunction(i32, i8*) #0
 
 ; Function Attrs: nounwind
-define linkonce_odr void @"main.regularFunction$gowrapper"(i8* %0) unnamed_addr #1 {
+define linkonce_odr void @"main.regularFunction$gowrapper"(i8* %0) unnamed_addr #2 {
 entry:
   %unpack.int = ptrtoint i8* %0 to i32
-  call void @main.regularFunction(i32 %unpack.int, i8* undef) #0
+  call void @main.regularFunction(i32 %unpack.int, i8* undef) #8
   ret void
 }
 
-declare i32 @"internal/task.getGoroutineStackSize"(i32, i8*)
+declare i32 @"internal/task.getGoroutineStackSize"(i32, i8*) #0
 
-declare void @"internal/task.start"(i32, i8*, i32, i8*)
+declare void @"internal/task.start"(i32, i8*, i32, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.inlineFunctionGoroutine(i8* %context) unnamed_addr #0 {
+define hidden void @main.inlineFunctionGoroutine(i8* %context) unnamed_addr #1 {
 entry:
-  %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (void (i8*)* @"main.inlineFunctionGoroutine$1$gowrapper" to i32), i8* undef) #0
-  call void @"internal/task.start"(i32 ptrtoint (void (i8*)* @"main.inlineFunctionGoroutine$1$gowrapper" to i32), i8* nonnull inttoptr (i32 5 to i8*), i32 %stacksize, i8* undef) #0
+  %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (void (i8*)* @"main.inlineFunctionGoroutine$1$gowrapper" to i32), i8* undef) #8
+  call void @"internal/task.start"(i32 ptrtoint (void (i8*)* @"main.inlineFunctionGoroutine$1$gowrapper" to i32), i8* nonnull inttoptr (i32 5 to i8*), i32 %stacksize, i8* undef) #8
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @"main.inlineFunctionGoroutine$1"(i32 %x, i8* %context) unnamed_addr #0 {
+define internal void @"main.inlineFunctionGoroutine$1"(i32 %x, i8* %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define linkonce_odr void @"main.inlineFunctionGoroutine$1$gowrapper"(i8* %0) unnamed_addr #2 {
+define linkonce_odr void @"main.inlineFunctionGoroutine$1$gowrapper"(i8* %0) unnamed_addr #3 {
 entry:
   %unpack.int = ptrtoint i8* %0 to i32
   call void @"main.inlineFunctionGoroutine$1"(i32 %unpack.int, i8* undef)
@@ -65,26 +65,26 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.closureFunctionGoroutine(i8* %context) unnamed_addr #0 {
+define hidden void @main.closureFunctionGoroutine(i8* %context) unnamed_addr #1 {
 entry:
-  %n = call i8* @runtime.alloc(i32 4, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
+  %n = call i8* @runtime.alloc(i32 4, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #8
   %0 = bitcast i8* %n to i32*
   store i32 3, i32* %0, align 4
-  %1 = call i8* @runtime.alloc(i32 8, i8* null, i8* undef) #0
+  %1 = call i8* @runtime.alloc(i32 8, i8* null, i8* undef) #8
   %2 = bitcast i8* %1 to i32*
   store i32 5, i32* %2, align 4
   %3 = getelementptr inbounds i8, i8* %1, i32 4
   %4 = bitcast i8* %3 to i8**
   store i8* %n, i8** %4, align 4
-  %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (void (i8*)* @"main.closureFunctionGoroutine$1$gowrapper" to i32), i8* undef) #0
-  call void @"internal/task.start"(i32 ptrtoint (void (i8*)* @"main.closureFunctionGoroutine$1$gowrapper" to i32), i8* nonnull %1, i32 %stacksize, i8* undef) #0
+  %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (void (i8*)* @"main.closureFunctionGoroutine$1$gowrapper" to i32), i8* undef) #8
+  call void @"internal/task.start"(i32 ptrtoint (void (i8*)* @"main.closureFunctionGoroutine$1$gowrapper" to i32), i8* nonnull %1, i32 %stacksize, i8* undef) #8
   %5 = load i32, i32* %0, align 4
-  call void @runtime.printint32(i32 %5, i8* undef) #0
+  call void @runtime.printint32(i32 %5, i8* undef) #8
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @"main.closureFunctionGoroutine$1"(i32 %x, i8* %context) unnamed_addr #0 {
+define internal void @"main.closureFunctionGoroutine$1"(i32 %x, i8* %context) unnamed_addr #1 {
 entry:
   %unpack.ptr = bitcast i8* %context to i32*
   store i32 7, i32* %unpack.ptr, align 4
@@ -92,7 +92,7 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define linkonce_odr void @"main.closureFunctionGoroutine$1$gowrapper"(i8* %0) unnamed_addr #3 {
+define linkonce_odr void @"main.closureFunctionGoroutine$1$gowrapper"(i8* %0) unnamed_addr #4 {
 entry:
   %1 = bitcast i8* %0 to i32*
   %2 = load i32, i32* %1, align 4
@@ -103,12 +103,12 @@ entry:
   ret void
 }
 
-declare void @runtime.printint32(i32, i8*)
+declare void @runtime.printint32(i32, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.funcGoroutine(i8* %fn.context, void ()* %fn.funcptr, i8* %context) unnamed_addr #0 {
+define hidden void @main.funcGoroutine(i8* %fn.context, void ()* %fn.funcptr, i8* %context) unnamed_addr #1 {
 entry:
-  %0 = call i8* @runtime.alloc(i32 12, i8* null, i8* undef) #0
+  %0 = call i8* @runtime.alloc(i32 12, i8* null, i8* undef) #8
   %1 = bitcast i8* %0 to i32*
   store i32 5, i32* %1, align 4
   %2 = getelementptr inbounds i8, i8* %0, i32 4
@@ -117,13 +117,13 @@ entry:
   %4 = getelementptr inbounds i8, i8* %0, i32 8
   %5 = bitcast i8* %4 to void ()**
   store void ()* %fn.funcptr, void ()** %5, align 4
-  %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (void (i8*)* @main.funcGoroutine.gowrapper to i32), i8* undef) #0
-  call void @"internal/task.start"(i32 ptrtoint (void (i8*)* @main.funcGoroutine.gowrapper to i32), i8* nonnull %0, i32 %stacksize, i8* undef) #0
+  %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (void (i8*)* @main.funcGoroutine.gowrapper to i32), i8* undef) #8
+  call void @"internal/task.start"(i32 ptrtoint (void (i8*)* @main.funcGoroutine.gowrapper to i32), i8* nonnull %0, i32 %stacksize, i8* undef) #8
   ret void
 }
 
 ; Function Attrs: nounwind
-define linkonce_odr void @main.funcGoroutine.gowrapper(i8* %0) unnamed_addr #4 {
+define linkonce_odr void @main.funcGoroutine.gowrapper(i8* %0) unnamed_addr #5 {
 entry:
   %1 = bitcast i8* %0 to i32*
   %2 = load i32, i32* %1, align 4
@@ -133,38 +133,38 @@ entry:
   %6 = getelementptr inbounds i8, i8* %0, i32 8
   %7 = bitcast i8* %6 to void (i32, i8*)**
   %8 = load void (i32, i8*)*, void (i32, i8*)** %7, align 4
-  call void %8(i32 %2, i8* %5) #0
+  call void %8(i32 %2, i8* %5) #8
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.recoverBuiltinGoroutine(i8* %context) unnamed_addr #0 {
+define hidden void @main.recoverBuiltinGoroutine(i8* %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.copyBuiltinGoroutine(i8* %dst.data, i32 %dst.len, i32 %dst.cap, i8* %src.data, i32 %src.len, i32 %src.cap, i8* %context) unnamed_addr #0 {
+define hidden void @main.copyBuiltinGoroutine(i8* %dst.data, i32 %dst.len, i32 %dst.cap, i8* %src.data, i32 %src.len, i32 %src.cap, i8* %context) unnamed_addr #1 {
 entry:
-  %copy.n = call i32 @runtime.sliceCopy(i8* %dst.data, i8* %src.data, i32 %dst.len, i32 %src.len, i32 1, i8* undef) #0
+  %copy.n = call i32 @runtime.sliceCopy(i8* %dst.data, i8* %src.data, i32 %dst.len, i32 %src.len, i32 1, i8* undef) #8
   ret void
 }
 
-declare i32 @runtime.sliceCopy(i8* nocapture writeonly, i8* nocapture readonly, i32, i32, i32, i8*)
+declare i32 @runtime.sliceCopy(i8* nocapture writeonly, i8* nocapture readonly, i32, i32, i32, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.closeBuiltinGoroutine(%runtime.channel* dereferenceable_or_null(32) %ch, i8* %context) unnamed_addr #0 {
+define hidden void @main.closeBuiltinGoroutine(%runtime.channel* dereferenceable_or_null(32) %ch, i8* %context) unnamed_addr #1 {
 entry:
-  call void @runtime.chanClose(%runtime.channel* %ch, i8* undef) #0
+  call void @runtime.chanClose(%runtime.channel* %ch, i8* undef) #8
   ret void
 }
 
-declare void @runtime.chanClose(%runtime.channel* dereferenceable_or_null(32), i8*)
+declare void @runtime.chanClose(%runtime.channel* dereferenceable_or_null(32), i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.startInterfaceMethod(i32 %itf.typecode, i8* %itf.value, i8* %context) unnamed_addr #0 {
+define hidden void @main.startInterfaceMethod(i32 %itf.typecode, i8* %itf.value, i8* %context) unnamed_addr #1 {
 entry:
-  %0 = call i8* @runtime.alloc(i32 16, i8* null, i8* undef) #0
+  %0 = call i8* @runtime.alloc(i32 16, i8* null, i8* undef) #8
   %1 = bitcast i8* %0 to i8**
   store i8* %itf.value, i8** %1, align 4
   %2 = getelementptr inbounds i8, i8* %0, i32 4
@@ -176,15 +176,15 @@ entry:
   %4 = getelementptr inbounds i8, i8* %0, i32 12
   %5 = bitcast i8* %4 to i32*
   store i32 %itf.typecode, i32* %5, align 4
-  %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (void (i8*)* @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper" to i32), i8* undef) #0
-  call void @"internal/task.start"(i32 ptrtoint (void (i8*)* @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper" to i32), i8* nonnull %0, i32 %stacksize, i8* undef) #0
+  %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (void (i8*)* @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper" to i32), i8* undef) #8
+  call void @"internal/task.start"(i32 ptrtoint (void (i8*)* @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper" to i32), i8* nonnull %0, i32 %stacksize, i8* undef) #8
   ret void
 }
 
-declare void @"interface:{Print:func:{basic:string}{}}.Print$invoke"(i8*, i8*, i32, i32, i8*) #5
+declare void @"interface:{Print:func:{basic:string}{}}.Print$invoke"(i8*, i8*, i32, i32, i8*) #6
 
 ; Function Attrs: nounwind
-define linkonce_odr void @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper"(i8* %0) unnamed_addr #6 {
+define linkonce_odr void @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper"(i8* %0) unnamed_addr #7 {
 entry:
   %1 = bitcast i8* %0 to i8**
   %2 = load i8*, i8** %1, align 4
@@ -197,14 +197,16 @@ entry:
   %9 = getelementptr inbounds i8, i8* %0, i32 12
   %10 = bitcast i8* %9 to i32*
   %11 = load i32, i32* %10, align 4
-  call void @"interface:{Print:func:{basic:string}{}}.Print$invoke"(i8* %2, i8* %5, i32 %8, i32 %11, i8* undef) #0
+  call void @"interface:{Print:func:{basic:string}{}}.Print$invoke"(i8* %2, i8* %5, i32 %8, i32 %11, i8* undef) #8
   ret void
 }
 
-attributes #0 = { nounwind }
-attributes #1 = { nounwind "tinygo-gowrapper"="main.regularFunction" }
-attributes #2 = { nounwind "tinygo-gowrapper"="main.inlineFunctionGoroutine$1" }
-attributes #3 = { nounwind "tinygo-gowrapper"="main.closureFunctionGoroutine$1" }
-attributes #4 = { nounwind "tinygo-gowrapper" }
-attributes #5 = { "tinygo-invoke"="reflect/methods.Print(string)" "tinygo-methods"="reflect/methods.Print(string)" }
-attributes #6 = { nounwind "tinygo-gowrapper"="interface:{Print:func:{basic:string}{}}.Print$invoke" }
+attributes #0 = { "target-features"="+armv7-m,+hwdiv,+soft-float,+strict-align,+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,+strict-align,+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,+strict-align,+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 #3 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+strict-align,+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 #4 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+strict-align,+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$1" }
+attributes #5 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+strict-align,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" "tinygo-gowrapper" }
+attributes #6 = { "target-features"="+armv7-m,+hwdiv,+soft-float,+strict-align,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" "tinygo-invoke"="reflect/methods.Print(string)" "tinygo-methods"="reflect/methods.Print(string)" }
+attributes #7 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+strict-align,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" "tinygo-gowrapper"="interface:{Print:func:{basic:string}{}}.Print$invoke" }
+attributes #8 = { nounwind }

compiler/testdata/goroutine-wasm-asyncify.ll

@@ -5,7 +5,7 @@ target triple = "wasm32-unknown-wasi"
 
 %runtime.channel = type { i32, i32, i8, %runtime.channelBlockedList*, i32, i32, i32, i8* }
 %runtime.channelBlockedList = type { %runtime.channelBlockedList*, %"internal/task.Task"*, %runtime.chanSelectState*, { %runtime.channelBlockedList*, i32, i32 } }
-%"internal/task.Task" = type { %"internal/task.Task"*, i8*, i64, %"internal/task.gcData", %"internal/task.state" }
+%"internal/task.Task" = type { %"internal/task.Task"*, i8*, i64, %"internal/task.gcData", %"internal/task.state", i8* }
 %"internal/task.gcData" = type { i8* }
 %"internal/task.state" = type { i32, i8*, %"internal/task.stackState", i1 }
 %"internal/task.stackState" = type { i32, i32 }
@@ -13,84 +13,84 @@ target triple = "wasm32-unknown-wasi"
 
 @"main$string" = internal unnamed_addr constant [4 x i8] c"test", align 1
 
-declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*)
+declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*) #0
 
-declare void @runtime.trackPointer(i8* nocapture readonly, i8*)
+declare void @runtime.trackPointer(i8* nocapture readonly, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.init(i8* %context) unnamed_addr #0 {
+define hidden void @main.init(i8* %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.regularFunctionGoroutine(i8* %context) unnamed_addr #0 {
+define hidden void @main.regularFunctionGoroutine(i8* %context) unnamed_addr #1 {
 entry:
-  call void @"internal/task.start"(i32 ptrtoint (void (i8*)* @"main.regularFunction$gowrapper" to i32), i8* nonnull inttoptr (i32 5 to i8*), i32 16384, i8* undef) #0
+  call void @"internal/task.start"(i32 ptrtoint (void (i8*)* @"main.regularFunction$gowrapper" to i32), i8* nonnull inttoptr (i32 5 to i8*), i32 16384, i8* undef) #8
   ret void
 }
 
-declare void @main.regularFunction(i32, i8*)
+declare void @main.regularFunction(i32, i8*) #0
 
-declare void @runtime.deadlock(i8*)
+declare void @runtime.deadlock(i8*) #0
 
 ; Function Attrs: nounwind
-define linkonce_odr void @"main.regularFunction$gowrapper"(i8* %0) unnamed_addr #1 {
+define linkonce_odr void @"main.regularFunction$gowrapper"(i8* %0) unnamed_addr #2 {
 entry:
   %unpack.int = ptrtoint i8* %0 to i32
-  call void @main.regularFunction(i32 %unpack.int, i8* undef) #0
-  call void @runtime.deadlock(i8* undef) #0
+  call void @main.regularFunction(i32 %unpack.int, i8* undef) #8
+  call void @runtime.deadlock(i8* undef) #8
   unreachable
 }
 
-declare void @"internal/task.start"(i32, i8*, i32, i8*)
+declare void @"internal/task.start"(i32, i8*, i32, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.inlineFunctionGoroutine(i8* %context) unnamed_addr #0 {
+define hidden void @main.inlineFunctionGoroutine(i8* %context) unnamed_addr #1 {
 entry:
-  call void @"internal/task.start"(i32 ptrtoint (void (i8*)* @"main.inlineFunctionGoroutine$1$gowrapper" to i32), i8* nonnull inttoptr (i32 5 to i8*), i32 16384, i8* undef) #0
+  call void @"internal/task.start"(i32 ptrtoint (void (i8*)* @"main.inlineFunctionGoroutine$1$gowrapper" to i32), i8* nonnull inttoptr (i32 5 to i8*), i32 16384, i8* undef) #8
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @"main.inlineFunctionGoroutine$1"(i32 %x, i8* %context) unnamed_addr #0 {
+define internal void @"main.inlineFunctionGoroutine$1"(i32 %x, i8* %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define linkonce_odr void @"main.inlineFunctionGoroutine$1$gowrapper"(i8* %0) unnamed_addr #2 {
+define linkonce_odr void @"main.inlineFunctionGoroutine$1$gowrapper"(i8* %0) unnamed_addr #3 {
 entry:
   %unpack.int = ptrtoint i8* %0 to i32
   call void @"main.inlineFunctionGoroutine$1"(i32 %unpack.int, i8* undef)
-  call void @runtime.deadlock(i8* undef) #0
+  call void @runtime.deadlock(i8* undef) #8
   unreachable
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.closureFunctionGoroutine(i8* %context) unnamed_addr #0 {
+define hidden void @main.closureFunctionGoroutine(i8* %context) unnamed_addr #1 {
 entry:
-  %n = call i8* @runtime.alloc(i32 4, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
+  %n = call i8* @runtime.alloc(i32 4, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #8
   %0 = bitcast i8* %n to i32*
-  call void @runtime.trackPointer(i8* nonnull %n, i8* undef) #0
+  call void @runtime.trackPointer(i8* nonnull %n, i8* undef) #8
   store i32 3, i32* %0, align 4
-  call void @runtime.trackPointer(i8* nonnull %n, i8* undef) #0
-  call void @runtime.trackPointer(i8* bitcast (void (i32, i8*)* @"main.closureFunctionGoroutine$1" to i8*), i8* undef) #0
-  %1 = call i8* @runtime.alloc(i32 8, i8* null, i8* undef) #0
-  call void @runtime.trackPointer(i8* nonnull %1, i8* undef) #0
+  call void @runtime.trackPointer(i8* nonnull %n, i8* undef) #8
+  call void @runtime.trackPointer(i8* bitcast (void (i32, i8*)* @"main.closureFunctionGoroutine$1" to i8*), i8* undef) #8
+  %1 = call i8* @runtime.alloc(i32 8, i8* null, i8* undef) #8
+  call void @runtime.trackPointer(i8* nonnull %1, i8* undef) #8
   %2 = bitcast i8* %1 to i32*
   store i32 5, i32* %2, align 4
   %3 = getelementptr inbounds i8, i8* %1, i32 4
   %4 = bitcast i8* %3 to i8**
   store i8* %n, i8** %4, align 4
-  call void @"internal/task.start"(i32 ptrtoint (void (i8*)* @"main.closureFunctionGoroutine$1$gowrapper" to i32), i8* nonnull %1, i32 16384, i8* undef) #0
+  call void @"internal/task.start"(i32 ptrtoint (void (i8*)* @"main.closureFunctionGoroutine$1$gowrapper" to i32), i8* nonnull %1, i32 16384, i8* undef) #8
   %5 = load i32, i32* %0, align 4
-  call void @runtime.printint32(i32 %5, i8* undef) #0
+  call void @runtime.printint32(i32 %5, i8* undef) #8
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @"main.closureFunctionGoroutine$1"(i32 %x, i8* %context) unnamed_addr #0 {
+define internal void @"main.closureFunctionGoroutine$1"(i32 %x, i8* %context) unnamed_addr #1 {
 entry:
   %unpack.ptr = bitcast i8* %context to i32*
   store i32 7, i32* %unpack.ptr, align 4
@@ -98,7 +98,7 @@ entry:
 }
 
 ; Function Attrs: nounwind
-define linkonce_odr void @"main.closureFunctionGoroutine$1$gowrapper"(i8* %0) unnamed_addr #3 {
+define linkonce_odr void @"main.closureFunctionGoroutine$1$gowrapper"(i8* %0) unnamed_addr #4 {
 entry:
   %1 = bitcast i8* %0 to i32*
   %2 = load i32, i32* %1, align 4
@@ -106,17 +106,17 @@ entry:
   %4 = bitcast i8* %3 to i8**
   %5 = load i8*, i8** %4, align 4
   call void @"main.closureFunctionGoroutine$1"(i32 %2, i8* %5)
-  call void @runtime.deadlock(i8* undef) #0
+  call void @runtime.deadlock(i8* undef) #8
   unreachable
 }
 
-declare void @runtime.printint32(i32, i8*)
+declare void @runtime.printint32(i32, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.funcGoroutine(i8* %fn.context, void ()* %fn.funcptr, i8* %context) unnamed_addr #0 {
+define hidden void @main.funcGoroutine(i8* %fn.context, void ()* %fn.funcptr, i8* %context) unnamed_addr #1 {
 entry:
-  %0 = call i8* @runtime.alloc(i32 12, i8* null, i8* undef) #0
-  call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #0
+  %0 = call i8* @runtime.alloc(i32 12, i8* null, i8* undef) #8
+  call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #8
   %1 = bitcast i8* %0 to i32*
   store i32 5, i32* %1, align 4
   %2 = getelementptr inbounds i8, i8* %0, i32 4
@@ -125,12 +125,12 @@ entry:
   %4 = getelementptr inbounds i8, i8* %0, i32 8
   %5 = bitcast i8* %4 to void ()**
   store void ()* %fn.funcptr, void ()** %5, align 4
-  call void @"internal/task.start"(i32 ptrtoint (void (i8*)* @main.funcGoroutine.gowrapper to i32), i8* nonnull %0, i32 16384, i8* undef) #0
+  call void @"internal/task.start"(i32 ptrtoint (void (i8*)* @main.funcGoroutine.gowrapper to i32), i8* nonnull %0, i32 16384, i8* undef) #8
   ret void
 }
 
 ; Function Attrs: nounwind
-define linkonce_odr void @main.funcGoroutine.gowrapper(i8* %0) unnamed_addr #4 {
+define linkonce_odr void @main.funcGoroutine.gowrapper(i8* %0) unnamed_addr #5 {
 entry:
   %1 = bitcast i8* %0 to i32*
   %2 = load i32, i32* %1, align 4
@@ -140,40 +140,40 @@ entry:
   %6 = getelementptr inbounds i8, i8* %0, i32 8
   %7 = bitcast i8* %6 to void (i32, i8*)**
   %8 = load void (i32, i8*)*, void (i32, i8*)** %7, align 4
-  call void %8(i32 %2, i8* %5) #0
-  call void @runtime.deadlock(i8* undef) #0
+  call void %8(i32 %2, i8* %5) #8
+  call void @runtime.deadlock(i8* undef) #8
   unreachable
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.recoverBuiltinGoroutine(i8* %context) unnamed_addr #0 {
+define hidden void @main.recoverBuiltinGoroutine(i8* %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.copyBuiltinGoroutine(i8* %dst.data, i32 %dst.len, i32 %dst.cap, i8* %src.data, i32 %src.len, i32 %src.cap, i8* %context) unnamed_addr #0 {
+define hidden void @main.copyBuiltinGoroutine(i8* %dst.data, i32 %dst.len, i32 %dst.cap, i8* %src.data, i32 %src.len, i32 %src.cap, i8* %context) unnamed_addr #1 {
 entry:
-  %copy.n = call i32 @runtime.sliceCopy(i8* %dst.data, i8* %src.data, i32 %dst.len, i32 %src.len, i32 1, i8* undef) #0
+  %copy.n = call i32 @runtime.sliceCopy(i8* %dst.data, i8* %src.data, i32 %dst.len, i32 %src.len, i32 1, i8* undef) #8
   ret void
 }
 
-declare i32 @runtime.sliceCopy(i8* nocapture writeonly, i8* nocapture readonly, i32, i32, i32, i8*)
+declare i32 @runtime.sliceCopy(i8* nocapture writeonly, i8* nocapture readonly, i32, i32, i32, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.closeBuiltinGoroutine(%runtime.channel* dereferenceable_or_null(32) %ch, i8* %context) unnamed_addr #0 {
+define hidden void @main.closeBuiltinGoroutine(%runtime.channel* dereferenceable_or_null(32) %ch, i8* %context) unnamed_addr #1 {
 entry:
-  call void @runtime.chanClose(%runtime.channel* %ch, i8* undef) #0
+  call void @runtime.chanClose(%runtime.channel* %ch, i8* undef) #8
   ret void
 }
 
-declare void @runtime.chanClose(%runtime.channel* dereferenceable_or_null(32), i8*)
+declare void @runtime.chanClose(%runtime.channel* dereferenceable_or_null(32), i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.startInterfaceMethod(i32 %itf.typecode, i8* %itf.value, i8* %context) unnamed_addr #0 {
+define hidden void @main.startInterfaceMethod(i32 %itf.typecode, i8* %itf.value, i8* %context) unnamed_addr #1 {
 entry:
-  %0 = call i8* @runtime.alloc(i32 16, i8* null, i8* undef) #0
-  call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #0
+  %0 = call i8* @runtime.alloc(i32 16, i8* null, i8* undef) #8
+  call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #8
   %1 = bitcast i8* %0 to i8**
   store i8* %itf.value, i8** %1, align 4
   %2 = getelementptr inbounds i8, i8* %0, i32 4
@@ -185,14 +185,14 @@ entry:
   %4 = getelementptr inbounds i8, i8* %0, i32 12
   %5 = bitcast i8* %4 to i32*
   store i32 %itf.typecode, i32* %5, align 4
-  call void @"internal/task.start"(i32 ptrtoint (void (i8*)* @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper" to i32), i8* nonnull %0, i32 16384, i8* undef) #0
+  call void @"internal/task.start"(i32 ptrtoint (void (i8*)* @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper" to i32), i8* nonnull %0, i32 16384, i8* undef) #8
   ret void
 }
 
-declare void @"interface:{Print:func:{basic:string}{}}.Print$invoke"(i8*, i8*, i32, i32, i8*) #5
+declare void @"interface:{Print:func:{basic:string}{}}.Print$invoke"(i8*, i8*, i32, i32, i8*) #6
 
 ; Function Attrs: nounwind
-define linkonce_odr void @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper"(i8* %0) unnamed_addr #6 {
+define linkonce_odr void @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper"(i8* %0) unnamed_addr #7 {
 entry:
   %1 = bitcast i8* %0 to i8**
   %2 = load i8*, i8** %1, align 4
@@ -205,15 +205,17 @@ entry:
   %9 = getelementptr inbounds i8, i8* %0, i32 12
   %10 = bitcast i8* %9 to i32*
   %11 = load i32, i32* %10, align 4
-  call void @"interface:{Print:func:{basic:string}{}}.Print$invoke"(i8* %2, i8* %5, i32 %8, i32 %11, i8* undef) #0
-  call void @runtime.deadlock(i8* undef) #0
+  call void @"interface:{Print:func:{basic:string}{}}.Print$invoke"(i8* %2, i8* %5, i32 %8, i32 %11, i8* undef) #8
+  call void @runtime.deadlock(i8* undef) #8
   unreachable
 }
 
-attributes #0 = { nounwind }
-attributes #1 = { nounwind "tinygo-gowrapper"="main.regularFunction" }
-attributes #2 = { nounwind "tinygo-gowrapper"="main.inlineFunctionGoroutine$1" }
-attributes #3 = { nounwind "tinygo-gowrapper"="main.closureFunctionGoroutine$1" }
-attributes #4 = { nounwind "tinygo-gowrapper" }
-attributes #5 = { "tinygo-invoke"="reflect/methods.Print(string)" "tinygo-methods"="reflect/methods.Print(string)" }
-attributes #6 = { nounwind "tinygo-gowrapper"="interface:{Print:func:{basic:string}{}}.Print$invoke" }
+attributes #0 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #1 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" "tinygo-gowrapper"="main.regularFunction" }
+attributes #3 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" "tinygo-gowrapper"="main.inlineFunctionGoroutine$1" }
+attributes #4 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" "tinygo-gowrapper"="main.closureFunctionGoroutine$1" }
+attributes #5 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" "tinygo-gowrapper" }
+attributes #6 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" "tinygo-invoke"="reflect/methods.Print(string)" "tinygo-methods"="reflect/methods.Print(string)" }
+attributes #7 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" "tinygo-gowrapper"="interface:{Print:func:{basic:string}{}}.Print$invoke" }
+attributes #8 = { nounwind }

compiler/testdata/interface.ll

@@ -22,111 +22,113 @@ target triple = "wasm32-unknown-wasi"
 @"reflect/types.interface:interface{String() string}$interface" = linkonce_odr constant [1 x i8*] [i8* @"reflect/methods.String() string"]
 @"reflect/types.typeid:basic:int" = external constant i8
 
-declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*)
+declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*) #0
 
-declare void @runtime.trackPointer(i8* nocapture readonly, i8*)
+declare void @runtime.trackPointer(i8* nocapture readonly, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.init(i8* %context) unnamed_addr #0 {
+define hidden void @main.init(i8* %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden %runtime._interface @main.simpleType(i8* %context) unnamed_addr #0 {
+define hidden %runtime._interface @main.simpleType(i8* %context) unnamed_addr #1 {
 entry:
-  call void @runtime.trackPointer(i8* null, i8* undef) #0
+  call void @runtime.trackPointer(i8* null, i8* undef) #6
   ret %runtime._interface { i32 ptrtoint (%runtime.typecodeID* @"reflect/types.type:basic:int" to i32), i8* null }
 }
 
 ; Function Attrs: nounwind
-define hidden %runtime._interface @main.pointerType(i8* %context) unnamed_addr #0 {
+define hidden %runtime._interface @main.pointerType(i8* %context) unnamed_addr #1 {
 entry:
-  call void @runtime.trackPointer(i8* null, i8* undef) #0
+  call void @runtime.trackPointer(i8* null, i8* undef) #6
   ret %runtime._interface { i32 ptrtoint (%runtime.typecodeID* @"reflect/types.type:pointer:basic:int" to i32), i8* null }
 }
 
 ; Function Attrs: nounwind
-define hidden %runtime._interface @main.interfaceType(i8* %context) unnamed_addr #0 {
+define hidden %runtime._interface @main.interfaceType(i8* %context) unnamed_addr #1 {
 entry:
-  call void @runtime.trackPointer(i8* null, i8* undef) #0
+  call void @runtime.trackPointer(i8* null, i8* undef) #6
   ret %runtime._interface { i32 ptrtoint (%runtime.typecodeID* @"reflect/types.type:pointer:named:error" to i32), i8* null }
 }
 
-declare i1 @"interface:{Error:func:{}{basic:string}}.$typeassert"(i32) #1
+declare i1 @"interface:{Error:func:{}{basic:string}}.$typeassert"(i32) #2
 
 ; Function Attrs: nounwind
-define hidden %runtime._interface @main.anonymousInterfaceType(i8* %context) unnamed_addr #0 {
+define hidden %runtime._interface @main.anonymousInterfaceType(i8* %context) unnamed_addr #1 {
 entry:
-  call void @runtime.trackPointer(i8* null, i8* undef) #0
+  call void @runtime.trackPointer(i8* null, i8* undef) #6
   ret %runtime._interface { i32 ptrtoint (%runtime.typecodeID* @"reflect/types.type:pointer:interface:{String:func:{}{basic:string}}" to i32), i8* null }
 }
 
-declare i1 @"interface:{String:func:{}{basic:string}}.$typeassert"(i32) #2
+declare i1 @"interface:{String:func:{}{basic:string}}.$typeassert"(i32) #3
 
 ; Function Attrs: nounwind
-define hidden i1 @main.isInt(i32 %itf.typecode, i8* %itf.value, i8* %context) unnamed_addr #0 {
+define hidden i1 @main.isInt(i32 %itf.typecode, i8* %itf.value, i8* %context) unnamed_addr #1 {
 entry:
-  %typecode = call i1 @runtime.typeAssert(i32 %itf.typecode, i8* nonnull @"reflect/types.typeid:basic:int", i8* undef) #0
+  %typecode = call i1 @runtime.typeAssert(i32 %itf.typecode, i8* nonnull @"reflect/types.typeid:basic:int", i8* undef) #6
   br i1 %typecode, label %typeassert.ok, label %typeassert.next
 
-typeassert.ok:                                    ; preds = %entry
-  br label %typeassert.next
-
 typeassert.next:                                  ; preds = %typeassert.ok, %entry
   ret i1 %typecode
-}
-
-declare i1 @runtime.typeAssert(i32, i8* dereferenceable_or_null(1), i8*)
-
-; Function Attrs: nounwind
-define hidden i1 @main.isError(i32 %itf.typecode, i8* %itf.value, i8* %context) unnamed_addr #0 {
-entry:
-  %0 = call i1 @"interface:{Error:func:{}{basic:string}}.$typeassert"(i32 %itf.typecode) #0
-  br i1 %0, label %typeassert.ok, label %typeassert.next
 
 typeassert.ok:                                    ; preds = %entry
   br label %typeassert.next
+}
+
+declare i1 @runtime.typeAssert(i32, i8* dereferenceable_or_null(1), i8*) #0
+
+; Function Attrs: nounwind
+define hidden i1 @main.isError(i32 %itf.typecode, i8* %itf.value, i8* %context) unnamed_addr #1 {
+entry:
+  %0 = call i1 @"interface:{Error:func:{}{basic:string}}.$typeassert"(i32 %itf.typecode) #6
+  br i1 %0, label %typeassert.ok, label %typeassert.next
 
 typeassert.next:                                  ; preds = %typeassert.ok, %entry
   ret i1 %0
-}
-
-; Function Attrs: nounwind
-define hidden i1 @main.isStringer(i32 %itf.typecode, i8* %itf.value, i8* %context) unnamed_addr #0 {
-entry:
-  %0 = call i1 @"interface:{String:func:{}{basic:string}}.$typeassert"(i32 %itf.typecode) #0
-  br i1 %0, label %typeassert.ok, label %typeassert.next
 
 typeassert.ok:                                    ; preds = %entry
   br label %typeassert.next
-
-typeassert.next:                                  ; preds = %typeassert.ok, %entry
-  ret i1 %0
 }
 
 ; Function Attrs: nounwind
-define hidden i8 @main.callFooMethod(i32 %itf.typecode, i8* %itf.value, i8* %context) unnamed_addr #0 {
+define hidden i1 @main.isStringer(i32 %itf.typecode, i8* %itf.value, i8* %context) unnamed_addr #1 {
 entry:
-  %0 = call i8 @"interface:{String:func:{}{basic:string},main.foo:func:{basic:int}{basic:uint8}}.foo$invoke"(i8* %itf.value, i32 3, i32 %itf.typecode, i8* undef) #0
+  %0 = call i1 @"interface:{String:func:{}{basic:string}}.$typeassert"(i32 %itf.typecode) #6
+  br i1 %0, label %typeassert.ok, label %typeassert.next
+
+typeassert.next:                                  ; preds = %typeassert.ok, %entry
+  ret i1 %0
+
+typeassert.ok:                                    ; preds = %entry
+  br label %typeassert.next
+}
+
+; Function Attrs: nounwind
+define hidden i8 @main.callFooMethod(i32 %itf.typecode, i8* %itf.value, i8* %context) unnamed_addr #1 {
+entry:
+  %0 = call i8 @"interface:{String:func:{}{basic:string},main.foo:func:{basic:int}{basic:uint8}}.foo$invoke"(i8* %itf.value, i32 3, i32 %itf.typecode, i8* undef) #6
   ret i8 %0
 }
 
-declare i8 @"interface:{String:func:{}{basic:string},main.foo:func:{basic:int}{basic:uint8}}.foo$invoke"(i8*, i32, i32, i8*) #3
+declare i8 @"interface:{String:func:{}{basic:string},main.foo:func:{basic:int}{basic:uint8}}.foo$invoke"(i8*, i32, i32, i8*) #4
 
 ; Function Attrs: nounwind
-define hidden %runtime._string @main.callErrorMethod(i32 %itf.typecode, i8* %itf.value, i8* %context) unnamed_addr #0 {
+define hidden %runtime._string @main.callErrorMethod(i32 %itf.typecode, i8* %itf.value, i8* %context) unnamed_addr #1 {
 entry:
-  %0 = call %runtime._string @"interface:{Error:func:{}{basic:string}}.Error$invoke"(i8* %itf.value, i32 %itf.typecode, i8* undef) #0
+  %0 = call %runtime._string @"interface:{Error:func:{}{basic:string}}.Error$invoke"(i8* %itf.value, i32 %itf.typecode, i8* undef) #6
   %1 = extractvalue %runtime._string %0, 0
-  call void @runtime.trackPointer(i8* %1, i8* undef) #0
+  call void @runtime.trackPointer(i8* %1, i8* undef) #6
   ret %runtime._string %0
 }
 
-declare %runtime._string @"interface:{Error:func:{}{basic:string}}.Error$invoke"(i8*, i32, i8*) #4
+declare %runtime._string @"interface:{Error:func:{}{basic:string}}.Error$invoke"(i8*, i32, i8*) #5
 
-attributes #0 = { nounwind }
-attributes #1 = { "tinygo-methods"="reflect/methods.Error() string" }
-attributes #2 = { "tinygo-methods"="reflect/methods.String() string" }
-attributes #3 = { "tinygo-invoke"="main.$methods.foo(int) uint8" "tinygo-methods"="reflect/methods.String() string; main.$methods.foo(int) uint8" }
-attributes #4 = { "tinygo-invoke"="reflect/methods.Error() string" "tinygo-methods"="reflect/methods.Error() string" }
+attributes #0 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #1 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #2 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" "tinygo-methods"="reflect/methods.Error() string" }
+attributes #3 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" "tinygo-methods"="reflect/methods.String() string" }
+attributes #4 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" "tinygo-invoke"="main.$methods.foo(int) uint8" "tinygo-methods"="reflect/methods.String() string; main.$methods.foo(int) uint8" }
+attributes #5 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" "tinygo-invoke"="reflect/methods.Error() string" "tinygo-methods"="reflect/methods.Error() string" }
+attributes #6 = { nounwind }

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

@@ -1,32 +0,0 @@
-; ModuleID = 'intrinsics.go'
-source_filename = "intrinsics.go"
-target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
-target triple = "thumbv7m-unknown-unknown-eabi"
-
-declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*)
-
-; Function Attrs: nounwind
-define hidden void @main.init(i8* %context) unnamed_addr #0 {
-entry:
-  ret void
-}
-
-; Function Attrs: nounwind
-define hidden double @main.mySqrt(double %x, i8* %context) unnamed_addr #0 {
-entry:
-  %0 = call double @math.Sqrt(double %x, i8* undef) #0
-  ret double %0
-}
-
-declare double @math.Sqrt(double, i8*)
-
-; Function Attrs: nounwind
-define hidden double @main.myTrunc(double %x, i8* %context) unnamed_addr #0 {
-entry:
-  %0 = call double @math.Trunc(double %x, i8* undef) #0
-  ret double %0
-}
-
-declare double @math.Trunc(double, i8*)
-
-attributes #0 = { nounwind }

compiler/testdata/intrinsics-wasm.ll

@@ -1,37 +0,0 @@
-; ModuleID = 'intrinsics.go'
-source_filename = "intrinsics.go"
-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"
-
-declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*)
-
-declare void @runtime.trackPointer(i8* nocapture readonly, i8*)
-
-; Function Attrs: nounwind
-define hidden void @main.init(i8* %context) unnamed_addr #0 {
-entry:
-  ret void
-}
-
-; Function Attrs: nounwind
-define hidden double @main.mySqrt(double %x, i8* %context) unnamed_addr #0 {
-entry:
-  %0 = call double @llvm.sqrt.f64(double %x)
-  ret double %0
-}
-
-; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
-declare double @llvm.sqrt.f64(double) #1
-
-; Function Attrs: nounwind
-define hidden double @main.myTrunc(double %x, i8* %context) unnamed_addr #0 {
-entry:
-  %0 = call double @llvm.trunc.f64(double %x)
-  ret double %0
-}
-
-; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
-declare double @llvm.trunc.f64(double) #1
-
-attributes #0 = { nounwind }
-attributes #1 = { nofree nosync nounwind readnone speculatable willreturn }

compiler/testdata/intrinsics.go

@@ -1,14 +0,0 @@
-package main
-
-// Test how intrinsics are lowered: either as regular calls to the math
-// functions or as LLVM builtins (such as llvm.sqrt.f64).
-
-import "math"
-
-func mySqrt(x float64) float64 {
-	return math.Sqrt(x)
-}
-
-func myTrunc(x float64) float64 {
-	return math.Trunc(x)
-}

compiler/testdata/pointer.ll

@@ -3,76 +3,78 @@ source_filename = "pointer.go"
 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"
 
-declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*)
+declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*) #0
 
-declare void @runtime.trackPointer(i8* nocapture readonly, i8*)
+declare void @runtime.trackPointer(i8* nocapture readonly, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.init(i8* %context) unnamed_addr #0 {
+define hidden void @main.init(i8* %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden [0 x i32] @main.pointerDerefZero([0 x i32]* %x, i8* %context) unnamed_addr #0 {
+define hidden [0 x i32] @main.pointerDerefZero([0 x i32]* %x, i8* %context) unnamed_addr #1 {
 entry:
   ret [0 x i32] zeroinitializer
 }
 
 ; Function Attrs: nounwind
-define hidden i32* @main.pointerCastFromUnsafe(i8* %x, i8* %context) unnamed_addr #0 {
+define hidden i32* @main.pointerCastFromUnsafe(i8* %x, i8* %context) unnamed_addr #1 {
 entry:
   %0 = bitcast i8* %x to i32*
-  call void @runtime.trackPointer(i8* %x, i8* undef) #0
+  call void @runtime.trackPointer(i8* %x, i8* undef) #2
   ret i32* %0
 }
 
 ; Function Attrs: nounwind
-define hidden i8* @main.pointerCastToUnsafe(i32* dereferenceable_or_null(4) %x, i8* %context) unnamed_addr #0 {
+define hidden i8* @main.pointerCastToUnsafe(i32* dereferenceable_or_null(4) %x, i8* %context) unnamed_addr #1 {
 entry:
   %0 = bitcast i32* %x to i8*
-  call void @runtime.trackPointer(i8* %0, i8* undef) #0
+  call void @runtime.trackPointer(i8* %0, i8* undef) #2
   ret i8* %0
 }
 
 ; Function Attrs: nounwind
-define hidden i8* @main.pointerCastToUnsafeNoop(i8* dereferenceable_or_null(1) %x, i8* %context) unnamed_addr #0 {
+define hidden i8* @main.pointerCastToUnsafeNoop(i8* dereferenceable_or_null(1) %x, i8* %context) unnamed_addr #1 {
 entry:
-  call void @runtime.trackPointer(i8* %x, i8* undef) #0
+  call void @runtime.trackPointer(i8* %x, i8* undef) #2
   ret i8* %x
 }
 
 ; Function Attrs: nounwind
-define hidden i8* @main.pointerUnsafeGEPFixedOffset(i8* dereferenceable_or_null(1) %ptr, i8* %context) unnamed_addr #0 {
+define hidden i8* @main.pointerUnsafeGEPFixedOffset(i8* dereferenceable_or_null(1) %ptr, i8* %context) unnamed_addr #1 {
 entry:
-  call void @runtime.trackPointer(i8* %ptr, i8* undef) #0
+  call void @runtime.trackPointer(i8* %ptr, i8* undef) #2
   %0 = getelementptr inbounds i8, i8* %ptr, i32 10
-  call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #0
-  call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #0
+  call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #2
+  call void @runtime.trackPointer(i8* nonnull %0, i8* undef) #2
   ret i8* %0
 }
 
 ; Function Attrs: nounwind
-define hidden i8* @main.pointerUnsafeGEPByteOffset(i8* dereferenceable_or_null(1) %ptr, i32 %offset, i8* %context) unnamed_addr #0 {
+define hidden i8* @main.pointerUnsafeGEPByteOffset(i8* dereferenceable_or_null(1) %ptr, i32 %offset, i8* %context) unnamed_addr #1 {
 entry:
-  call void @runtime.trackPointer(i8* %ptr, i8* undef) #0
+  call void @runtime.trackPointer(i8* %ptr, i8* undef) #2
   %0 = getelementptr inbounds i8, i8* %ptr, i32 %offset
-  call void @runtime.trackPointer(i8* %0, i8* undef) #0
-  call void @runtime.trackPointer(i8* %0, i8* undef) #0
+  call void @runtime.trackPointer(i8* %0, i8* undef) #2
+  call void @runtime.trackPointer(i8* %0, i8* undef) #2
   ret i8* %0
 }
 
 ; Function Attrs: nounwind
-define hidden i32* @main.pointerUnsafeGEPIntOffset(i32* dereferenceable_or_null(4) %ptr, i32 %offset, i8* %context) unnamed_addr #0 {
+define hidden i32* @main.pointerUnsafeGEPIntOffset(i32* dereferenceable_or_null(4) %ptr, i32 %offset, i8* %context) unnamed_addr #1 {
 entry:
   %0 = bitcast i32* %ptr to i8*
-  call void @runtime.trackPointer(i8* %0, i8* undef) #0
+  call void @runtime.trackPointer(i8* %0, i8* undef) #2
   %1 = getelementptr i32, i32* %ptr, i32 %offset
   %2 = bitcast i32* %1 to i8*
-  call void @runtime.trackPointer(i8* %2, i8* undef) #0
+  call void @runtime.trackPointer(i8* %2, i8* undef) #2
   %3 = bitcast i32* %1 to i8*
-  call void @runtime.trackPointer(i8* %3, i8* undef) #0
+  call void @runtime.trackPointer(i8* %3, i8* undef) #2
   ret i32* %1
 }
 
-attributes #0 = { nounwind }
+attributes #0 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #1 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #2 = { nounwind }

compiler/testdata/pragma.go

@@ -3,44 +3,53 @@ package main
 import _ "unsafe"
 
 // Creates an external global with name extern_global.
+//
 //go:extern extern_global
 var externGlobal [0]byte
 
 // Creates a
+//
 //go:align 32
 var alignedGlobal [4]uint32
 
 // Test conflicting pragmas (the last one counts).
+//
 //go:align 64
 //go:align 16
 var alignedGlobal16 [4]uint32
 
 // Test exported functions.
+//
 //export extern_func
 func externFunc() {
 }
 
 // Define a function in a different package using go:linkname.
+//
 //go:linkname withLinkageName1 somepkg.someFunction1
 func withLinkageName1() {
 }
 
 // Import a function from a different package using go:linkname.
+//
 //go:linkname withLinkageName2 somepkg.someFunction2
 func withLinkageName2()
 
 // Function has an 'inline hint', similar to the inline keyword in C.
+//
 //go:inline
 func inlineFunc() {
 }
 
 // Function should never be inlined, equivalent to GCC
 // __attribute__((noinline)).
+//
 //go:noinline
 func noinlineFunc() {
 }
 
 // This function should have the specified section.
+//
 //go:section .special_function_section
 func functionInSection() {
 }
@@ -51,6 +60,7 @@ func exportedFunctionInSection() {
 }
 
 // This function should not: it's only a declaration and not a definition.
+//
 //go:section .special_function_section
 func undefinedFunctionNotInSection()
 

compiler/testdata/pragma.ll

@@ -10,58 +10,59 @@ target triple = "wasm32-unknown-wasi"
 @undefinedGlobalNotInSection = external global i32, align 4
 @main.multipleGlobalPragmas = hidden global i32 0, section ".global_section", align 1024
 
-declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*)
+declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*) #0
 
-declare void @runtime.trackPointer(i8* nocapture readonly, i8*)
+declare void @runtime.trackPointer(i8* nocapture readonly, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.init(i8* %context) unnamed_addr #0 {
+define hidden void @main.init(i8* %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define void @extern_func() #1 {
+define void @extern_func() #2 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @somepkg.someFunction1(i8* %context) unnamed_addr #0 {
+define hidden void @somepkg.someFunction1(i8* %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
-declare void @somepkg.someFunction2(i8*)
+declare void @somepkg.someFunction2(i8*) #0
 
 ; Function Attrs: inlinehint nounwind
-define hidden void @main.inlineFunc(i8* %context) unnamed_addr #2 {
+define hidden void @main.inlineFunc(i8* %context) unnamed_addr #3 {
 entry:
   ret void
 }
 
 ; Function Attrs: noinline nounwind
-define hidden void @main.noinlineFunc(i8* %context) unnamed_addr #3 {
+define hidden void @main.noinlineFunc(i8* %context) unnamed_addr #4 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden void @main.functionInSection(i8* %context) unnamed_addr #0 section ".special_function_section" {
+define hidden void @main.functionInSection(i8* %context) unnamed_addr #1 section ".special_function_section" {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define void @exportedFunctionInSection() #4 section ".special_function_section" {
+define void @exportedFunctionInSection() #5 section ".special_function_section" {
 entry:
   ret void
 }
 
-declare void @main.undefinedFunctionNotInSection(i8*)
+declare void @main.undefinedFunctionNotInSection(i8*) #0
 
-attributes #0 = { nounwind }
-attributes #1 = { nounwind "wasm-export-name"="extern_func" }
-attributes #2 = { inlinehint nounwind }
-attributes #3 = { noinline nounwind }
-attributes #4 = { nounwind "wasm-export-name"="exportedFunctionInSection" }
+attributes #0 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #1 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" "wasm-export-name"="extern_func" "wasm-import-module"="env" "wasm-import-name"="extern_func" }
+attributes #3 = { inlinehint nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #4 = { noinline nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #5 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" "wasm-export-name"="exportedFunctionInSection" "wasm-import-module"="env" "wasm-import-name"="exportedFunctionInSection" }

compiler/testdata/slice.go

@@ -1,5 +1,7 @@
 package main
 
+import "unsafe"
+
 func sliceLen(ints []int) int {
 	return len(ints)
 }
@@ -41,3 +43,36 @@ func makeArraySlice(len int) [][3]byte {
 func makeInt32Slice(len int) []int32 {
 	return make([]int32, len)
 }
+
+func Add32(p unsafe.Pointer, len int) unsafe.Pointer {
+	return unsafe.Add(p, len)
+}
+
+func Add64(p unsafe.Pointer, len int64) unsafe.Pointer {
+	return unsafe.Add(p, len)
+}
+
+func SliceToArray(s []int) *[4]int {
+	return (*[4]int)(s)
+}
+
+func SliceToArrayConst() *[4]int {
+	s := make([]int, 6)
+	return (*[4]int)(s)
+}
+
+func SliceInt(ptr *int, len int) []int {
+	return unsafe.Slice(ptr, len)
+}
+
+func SliceUint16(ptr *byte, len uint16) []byte {
+	return unsafe.Slice(ptr, len)
+}
+
+func SliceUint64(ptr *int, len uint64) []int {
+	return unsafe.Slice(ptr, len)
+}
+
+func SliceInt64(ptr *int, len int64) []int {
+	return unsafe.Slice(ptr, len)
+}

compiler/testdata/slice.ll

@@ -3,51 +3,51 @@ source_filename = "slice.go"
 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"
 
-declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*)
+declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*) #0
 
-declare void @runtime.trackPointer(i8* nocapture readonly, i8*)
+declare void @runtime.trackPointer(i8* nocapture readonly, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.init(i8* %context) unnamed_addr #0 {
+define hidden void @main.init(i8* %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.sliceLen(i32* %ints.data, i32 %ints.len, i32 %ints.cap, i8* %context) unnamed_addr #0 {
+define hidden i32 @main.sliceLen(i32* %ints.data, i32 %ints.len, i32 %ints.cap, i8* %context) unnamed_addr #1 {
 entry:
   ret i32 %ints.len
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.sliceCap(i32* %ints.data, i32 %ints.len, i32 %ints.cap, i8* %context) unnamed_addr #0 {
+define hidden i32 @main.sliceCap(i32* %ints.data, i32 %ints.len, i32 %ints.cap, i8* %context) unnamed_addr #1 {
 entry:
   ret i32 %ints.cap
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.sliceElement(i32* %ints.data, i32 %ints.len, i32 %ints.cap, i32 %index, i8* %context) unnamed_addr #0 {
+define hidden i32 @main.sliceElement(i32* %ints.data, i32 %ints.len, i32 %ints.cap, i32 %index, i8* %context) unnamed_addr #1 {
 entry:
   %.not = icmp ult i32 %index, %ints.len
   br i1 %.not, label %lookup.next, label %lookup.throw
 
-lookup.throw:                                     ; preds = %entry
-  call void @runtime.lookupPanic(i8* undef) #0
-  unreachable
-
 lookup.next:                                      ; preds = %entry
   %0 = getelementptr inbounds i32, i32* %ints.data, i32 %index
   %1 = load i32, i32* %0, align 4
   ret i32 %1
+
+lookup.throw:                                     ; preds = %entry
+  call void @runtime.lookupPanic(i8* undef) #2
+  unreachable
 }
 
-declare void @runtime.lookupPanic(i8*)
+declare void @runtime.lookupPanic(i8*) #0
 
 ; Function Attrs: nounwind
-define hidden { i32*, i32, i32 } @main.sliceAppendValues(i32* %ints.data, i32 %ints.len, i32 %ints.cap, i8* %context) unnamed_addr #0 {
+define hidden { i32*, i32, i32 } @main.sliceAppendValues(i32* %ints.data, i32 %ints.len, i32 %ints.cap, i8* %context) unnamed_addr #1 {
 entry:
-  %varargs = call i8* @runtime.alloc(i32 12, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
-  call void @runtime.trackPointer(i8* nonnull %varargs, i8* undef) #0
+  %varargs = call i8* @runtime.alloc(i32 12, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #2
+  call void @runtime.trackPointer(i8* nonnull %varargs, i8* undef) #2
   %0 = bitcast i8* %varargs to i32*
   store i32 1, i32* %0, align 4
   %1 = getelementptr inbounds i8, i8* %varargs, i32 4
@@ -57,7 +57,7 @@ entry:
   %4 = bitcast i8* %3 to i32*
   store i32 3, i32* %4, align 4
   %append.srcPtr = bitcast i32* %ints.data to i8*
-  %append.new = call { i8*, i32, i32 } @runtime.sliceAppend(i8* %append.srcPtr, i8* nonnull %varargs, i32 %ints.len, i32 %ints.cap, i32 3, i32 4, i8* undef) #0
+  %append.new = call { i8*, i32, i32 } @runtime.sliceAppend(i8* %append.srcPtr, i8* nonnull %varargs, i32 %ints.len, i32 %ints.cap, i32 3, i32 4, i8* undef) #2
   %append.newPtr = extractvalue { i8*, i32, i32 } %append.new, 0
   %append.newBuf = bitcast i8* %append.newPtr to i32*
   %append.newLen = extractvalue { i8*, i32, i32 } %append.new, 1
@@ -65,18 +65,18 @@ entry:
   %5 = insertvalue { i32*, i32, i32 } undef, i32* %append.newBuf, 0
   %6 = insertvalue { i32*, i32, i32 } %5, i32 %append.newLen, 1
   %7 = insertvalue { i32*, i32, i32 } %6, i32 %append.newCap, 2
-  call void @runtime.trackPointer(i8* %append.newPtr, i8* undef) #0
+  call void @runtime.trackPointer(i8* %append.newPtr, i8* undef) #2
   ret { i32*, i32, i32 } %7
 }
 
-declare { i8*, i32, i32 } @runtime.sliceAppend(i8*, i8* nocapture readonly, i32, i32, i32, i32, i8*)
+declare { i8*, i32, i32 } @runtime.sliceAppend(i8*, i8* nocapture readonly, i32, i32, i32, i32, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden { i32*, i32, i32 } @main.sliceAppendSlice(i32* %ints.data, i32 %ints.len, i32 %ints.cap, i32* %added.data, i32 %added.len, i32 %added.cap, i8* %context) unnamed_addr #0 {
+define hidden { i32*, i32, i32 } @main.sliceAppendSlice(i32* %ints.data, i32 %ints.len, i32 %ints.cap, i32* %added.data, i32 %added.len, i32 %added.cap, i8* %context) unnamed_addr #1 {
 entry:
   %append.srcPtr = bitcast i32* %ints.data to i8*
   %append.srcPtr1 = bitcast i32* %added.data to i8*
-  %append.new = call { i8*, i32, i32 } @runtime.sliceAppend(i8* %append.srcPtr, i8* %append.srcPtr1, i32 %ints.len, i32 %ints.cap, i32 %added.len, i32 4, i8* undef) #0
+  %append.new = call { i8*, i32, i32 } @runtime.sliceAppend(i8* %append.srcPtr, i8* %append.srcPtr1, i32 %ints.len, i32 %ints.cap, i32 %added.len, i32 4, i8* undef) #2
   %append.newPtr = extractvalue { i8*, i32, i32 } %append.new, 0
   %append.newBuf = bitcast i8* %append.newPtr to i32*
   %append.newLen = extractvalue { i8*, i32, i32 } %append.new, 1
@@ -84,103 +84,248 @@ entry:
   %0 = insertvalue { i32*, i32, i32 } undef, i32* %append.newBuf, 0
   %1 = insertvalue { i32*, i32, i32 } %0, i32 %append.newLen, 1
   %2 = insertvalue { i32*, i32, i32 } %1, i32 %append.newCap, 2
-  call void @runtime.trackPointer(i8* %append.newPtr, i8* undef) #0
+  call void @runtime.trackPointer(i8* %append.newPtr, i8* undef) #2
   ret { i32*, i32, i32 } %2
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.sliceCopy(i32* %dst.data, i32 %dst.len, i32 %dst.cap, i32* %src.data, i32 %src.len, i32 %src.cap, i8* %context) unnamed_addr #0 {
+define hidden i32 @main.sliceCopy(i32* %dst.data, i32 %dst.len, i32 %dst.cap, i32* %src.data, i32 %src.len, i32 %src.cap, i8* %context) unnamed_addr #1 {
 entry:
   %copy.dstPtr = bitcast i32* %dst.data to i8*
   %copy.srcPtr = bitcast i32* %src.data to i8*
-  %copy.n = call i32 @runtime.sliceCopy(i8* %copy.dstPtr, i8* %copy.srcPtr, i32 %dst.len, i32 %src.len, i32 4, i8* undef) #0
+  %copy.n = call i32 @runtime.sliceCopy(i8* %copy.dstPtr, i8* %copy.srcPtr, i32 %dst.len, i32 %src.len, i32 4, i8* undef) #2
   ret i32 %copy.n
 }
 
-declare i32 @runtime.sliceCopy(i8* nocapture writeonly, i8* nocapture readonly, i32, i32, i32, i8*)
+declare i32 @runtime.sliceCopy(i8* nocapture writeonly, i8* nocapture readonly, i32, i32, i32, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden { i8*, i32, i32 } @main.makeByteSlice(i32 %len, i8* %context) unnamed_addr #0 {
+define hidden { i8*, i32, i32 } @main.makeByteSlice(i32 %len, i8* %context) unnamed_addr #1 {
 entry:
   %slice.maxcap = icmp slt i32 %len, 0
   br i1 %slice.maxcap, label %slice.throw, label %slice.next
 
-slice.throw:                                      ; preds = %entry
-  call void @runtime.slicePanic(i8* undef) #0
-  unreachable
-
 slice.next:                                       ; preds = %entry
-  %makeslice.buf = call i8* @runtime.alloc(i32 %len, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
+  %makeslice.buf = call i8* @runtime.alloc(i32 %len, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #2
   %0 = insertvalue { i8*, i32, i32 } undef, i8* %makeslice.buf, 0
   %1 = insertvalue { i8*, i32, i32 } %0, i32 %len, 1
   %2 = insertvalue { i8*, i32, i32 } %1, i32 %len, 2
-  call void @runtime.trackPointer(i8* nonnull %makeslice.buf, i8* undef) #0
+  call void @runtime.trackPointer(i8* nonnull %makeslice.buf, i8* undef) #2
   ret { i8*, i32, i32 } %2
+
+slice.throw:                                      ; preds = %entry
+  call void @runtime.slicePanic(i8* undef) #2
+  unreachable
 }
 
-declare void @runtime.slicePanic(i8*)
+declare void @runtime.slicePanic(i8*) #0
 
 ; Function Attrs: nounwind
-define hidden { i16*, i32, i32 } @main.makeInt16Slice(i32 %len, i8* %context) unnamed_addr #0 {
+define hidden { i16*, i32, i32 } @main.makeInt16Slice(i32 %len, i8* %context) unnamed_addr #1 {
 entry:
   %slice.maxcap = icmp slt i32 %len, 0
   br i1 %slice.maxcap, label %slice.throw, label %slice.next
 
-slice.throw:                                      ; preds = %entry
-  call void @runtime.slicePanic(i8* undef) #0
-  unreachable
-
 slice.next:                                       ; preds = %entry
   %makeslice.cap = shl i32 %len, 1
-  %makeslice.buf = call i8* @runtime.alloc(i32 %makeslice.cap, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
+  %makeslice.buf = call i8* @runtime.alloc(i32 %makeslice.cap, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #2
   %makeslice.array = bitcast i8* %makeslice.buf to i16*
   %0 = insertvalue { i16*, i32, i32 } undef, i16* %makeslice.array, 0
   %1 = insertvalue { i16*, i32, i32 } %0, i32 %len, 1
   %2 = insertvalue { i16*, i32, i32 } %1, i32 %len, 2
-  call void @runtime.trackPointer(i8* nonnull %makeslice.buf, i8* undef) #0
+  call void @runtime.trackPointer(i8* nonnull %makeslice.buf, i8* undef) #2
   ret { i16*, i32, i32 } %2
+
+slice.throw:                                      ; preds = %entry
+  call void @runtime.slicePanic(i8* undef) #2
+  unreachable
 }
 
 ; Function Attrs: nounwind
-define hidden { [3 x i8]*, i32, i32 } @main.makeArraySlice(i32 %len, i8* %context) unnamed_addr #0 {
+define hidden { [3 x i8]*, i32, i32 } @main.makeArraySlice(i32 %len, i8* %context) unnamed_addr #1 {
 entry:
   %slice.maxcap = icmp ugt i32 %len, 1431655765
   br i1 %slice.maxcap, label %slice.throw, label %slice.next
 
-slice.throw:                                      ; preds = %entry
-  call void @runtime.slicePanic(i8* undef) #0
-  unreachable
-
 slice.next:                                       ; preds = %entry
   %makeslice.cap = mul i32 %len, 3
-  %makeslice.buf = call i8* @runtime.alloc(i32 %makeslice.cap, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
+  %makeslice.buf = call i8* @runtime.alloc(i32 %makeslice.cap, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #2
   %makeslice.array = bitcast i8* %makeslice.buf to [3 x i8]*
   %0 = insertvalue { [3 x i8]*, i32, i32 } undef, [3 x i8]* %makeslice.array, 0
   %1 = insertvalue { [3 x i8]*, i32, i32 } %0, i32 %len, 1
   %2 = insertvalue { [3 x i8]*, i32, i32 } %1, i32 %len, 2
-  call void @runtime.trackPointer(i8* nonnull %makeslice.buf, i8* undef) #0
+  call void @runtime.trackPointer(i8* nonnull %makeslice.buf, i8* undef) #2
   ret { [3 x i8]*, i32, i32 } %2
+
+slice.throw:                                      ; preds = %entry
+  call void @runtime.slicePanic(i8* undef) #2
+  unreachable
 }
 
 ; Function Attrs: nounwind
-define hidden { i32*, i32, i32 } @main.makeInt32Slice(i32 %len, i8* %context) unnamed_addr #0 {
+define hidden { i32*, i32, i32 } @main.makeInt32Slice(i32 %len, i8* %context) unnamed_addr #1 {
 entry:
   %slice.maxcap = icmp ugt i32 %len, 1073741823
   br i1 %slice.maxcap, label %slice.throw, label %slice.next
 
-slice.throw:                                      ; preds = %entry
-  call void @runtime.slicePanic(i8* undef) #0
-  unreachable
-
 slice.next:                                       ; preds = %entry
   %makeslice.cap = shl i32 %len, 2
-  %makeslice.buf = call i8* @runtime.alloc(i32 %makeslice.cap, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #0
+  %makeslice.buf = call i8* @runtime.alloc(i32 %makeslice.cap, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #2
   %makeslice.array = bitcast i8* %makeslice.buf to i32*
   %0 = insertvalue { i32*, i32, i32 } undef, i32* %makeslice.array, 0
   %1 = insertvalue { i32*, i32, i32 } %0, i32 %len, 1
   %2 = insertvalue { i32*, i32, i32 } %1, i32 %len, 2
-  call void @runtime.trackPointer(i8* nonnull %makeslice.buf, i8* undef) #0
+  call void @runtime.trackPointer(i8* nonnull %makeslice.buf, i8* undef) #2
   ret { i32*, i32, i32 } %2
+
+slice.throw:                                      ; preds = %entry
+  call void @runtime.slicePanic(i8* undef) #2
+  unreachable
 }
 
-attributes #0 = { nounwind }
+; Function Attrs: nounwind
+define hidden i8* @main.Add32(i8* %p, i32 %len, i8* %context) unnamed_addr #1 {
+entry:
+  %0 = getelementptr i8, i8* %p, i32 %len
+  call void @runtime.trackPointer(i8* %0, i8* undef) #2
+  ret i8* %0
+}
+
+; Function Attrs: nounwind
+define hidden i8* @main.Add64(i8* %p, i64 %len, i8* %context) unnamed_addr #1 {
+entry:
+  %0 = trunc i64 %len to i32
+  %1 = getelementptr i8, i8* %p, i32 %0
+  call void @runtime.trackPointer(i8* %1, i8* undef) #2
+  ret i8* %1
+}
+
+; Function Attrs: nounwind
+define hidden [4 x i32]* @main.SliceToArray(i32* %s.data, i32 %s.len, i32 %s.cap, i8* %context) unnamed_addr #1 {
+entry:
+  %0 = icmp ult i32 %s.len, 4
+  br i1 %0, label %slicetoarray.throw, label %slicetoarray.next
+
+slicetoarray.next:                                ; preds = %entry
+  %1 = bitcast i32* %s.data to [4 x i32]*
+  ret [4 x i32]* %1
+
+slicetoarray.throw:                               ; preds = %entry
+  call void @runtime.sliceToArrayPointerPanic(i8* undef) #2
+  unreachable
+}
+
+declare void @runtime.sliceToArrayPointerPanic(i8*) #0
+
+; Function Attrs: nounwind
+define hidden [4 x i32]* @main.SliceToArrayConst(i8* %context) unnamed_addr #1 {
+entry:
+  %makeslice = call i8* @runtime.alloc(i32 24, i8* nonnull inttoptr (i32 3 to i8*), i8* undef) #2
+  call void @runtime.trackPointer(i8* nonnull %makeslice, i8* undef) #2
+  br i1 false, label %slicetoarray.throw, label %slicetoarray.next
+
+slicetoarray.next:                                ; preds = %entry
+  %0 = bitcast i8* %makeslice to [4 x i32]*
+  ret [4 x i32]* %0
+
+slicetoarray.throw:                               ; preds = %entry
+  unreachable
+}
+
+; Function Attrs: nounwind
+define hidden { i32*, i32, i32 } @main.SliceInt(i32* dereferenceable_or_null(4) %ptr, i32 %len, i8* %context) unnamed_addr #1 {
+entry:
+  %0 = icmp ugt i32 %len, 1073741823
+  %1 = icmp eq i32* %ptr, null
+  %2 = icmp ne i32 %len, 0
+  %3 = and i1 %1, %2
+  %4 = or i1 %3, %0
+  br i1 %4, label %unsafe.Slice.throw, label %unsafe.Slice.next
+
+unsafe.Slice.next:                                ; preds = %entry
+  %5 = insertvalue { i32*, i32, i32 } undef, i32* %ptr, 0
+  %6 = insertvalue { i32*, i32, i32 } %5, i32 %len, 1
+  %7 = insertvalue { i32*, i32, i32 } %6, i32 %len, 2
+  %8 = bitcast i32* %ptr to i8*
+  call void @runtime.trackPointer(i8* %8, i8* undef) #2
+  ret { i32*, i32, i32 } %7
+
+unsafe.Slice.throw:                               ; preds = %entry
+  call void @runtime.unsafeSlicePanic(i8* undef) #2
+  unreachable
+}
+
+declare void @runtime.unsafeSlicePanic(i8*) #0
+
+; Function Attrs: nounwind
+define hidden { i8*, i32, i32 } @main.SliceUint16(i8* dereferenceable_or_null(1) %ptr, i16 %len, i8* %context) unnamed_addr #1 {
+entry:
+  %0 = icmp eq i8* %ptr, null
+  %1 = icmp ne i16 %len, 0
+  %2 = and i1 %0, %1
+  br i1 %2, label %unsafe.Slice.throw, label %unsafe.Slice.next
+
+unsafe.Slice.next:                                ; preds = %entry
+  %3 = zext i16 %len to i32
+  %4 = insertvalue { i8*, i32, i32 } undef, i8* %ptr, 0
+  %5 = insertvalue { i8*, i32, i32 } %4, i32 %3, 1
+  %6 = insertvalue { i8*, i32, i32 } %5, i32 %3, 2
+  call void @runtime.trackPointer(i8* %ptr, i8* undef) #2
+  ret { i8*, i32, i32 } %6
+
+unsafe.Slice.throw:                               ; preds = %entry
+  call void @runtime.unsafeSlicePanic(i8* undef) #2
+  unreachable
+}
+
+; Function Attrs: nounwind
+define hidden { i32*, i32, i32 } @main.SliceUint64(i32* dereferenceable_or_null(4) %ptr, i64 %len, i8* %context) unnamed_addr #1 {
+entry:
+  %0 = icmp ugt i64 %len, 1073741823
+  %1 = icmp eq i32* %ptr, null
+  %2 = icmp ne i64 %len, 0
+  %3 = and i1 %1, %2
+  %4 = or i1 %3, %0
+  br i1 %4, label %unsafe.Slice.throw, label %unsafe.Slice.next
+
+unsafe.Slice.next:                                ; preds = %entry
+  %5 = trunc i64 %len to i32
+  %6 = insertvalue { i32*, i32, i32 } undef, i32* %ptr, 0
+  %7 = insertvalue { i32*, i32, i32 } %6, i32 %5, 1
+  %8 = insertvalue { i32*, i32, i32 } %7, i32 %5, 2
+  %9 = bitcast i32* %ptr to i8*
+  call void @runtime.trackPointer(i8* %9, i8* undef) #2
+  ret { i32*, i32, i32 } %8
+
+unsafe.Slice.throw:                               ; preds = %entry
+  call void @runtime.unsafeSlicePanic(i8* undef) #2
+  unreachable
+}
+
+; Function Attrs: nounwind
+define hidden { i32*, i32, i32 } @main.SliceInt64(i32* dereferenceable_or_null(4) %ptr, i64 %len, i8* %context) unnamed_addr #1 {
+entry:
+  %0 = icmp ugt i64 %len, 1073741823
+  %1 = icmp eq i32* %ptr, null
+  %2 = icmp ne i64 %len, 0
+  %3 = and i1 %1, %2
+  %4 = or i1 %3, %0
+  br i1 %4, label %unsafe.Slice.throw, label %unsafe.Slice.next
+
+unsafe.Slice.next:                                ; preds = %entry
+  %5 = trunc i64 %len to i32
+  %6 = insertvalue { i32*, i32, i32 } undef, i32* %ptr, 0
+  %7 = insertvalue { i32*, i32, i32 } %6, i32 %5, 1
+  %8 = insertvalue { i32*, i32, i32 } %7, i32 %5, 2
+  %9 = bitcast i32* %ptr to i8*
+  call void @runtime.trackPointer(i8* %9, i8* undef) #2
+  ret { i32*, i32, i32 } %8
+
+unsafe.Slice.throw:                               ; preds = %entry
+  call void @runtime.unsafeSlicePanic(i8* undef) #2
+  unreachable
+}
+
+attributes #0 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #1 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #2 = { nounwind }

compiler/testdata/string.ll

@@ -7,93 +7,95 @@ target triple = "wasm32-unknown-wasi"
 
 @"main$string" = internal unnamed_addr constant [3 x i8] c"foo", align 1
 
-declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*)
+declare noalias nonnull i8* @runtime.alloc(i32, i8*, i8*) #0
 
-declare void @runtime.trackPointer(i8* nocapture readonly, i8*)
+declare void @runtime.trackPointer(i8* nocapture readonly, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden void @main.init(i8* %context) unnamed_addr #0 {
+define hidden void @main.init(i8* %context) unnamed_addr #1 {
 entry:
   ret void
 }
 
 ; Function Attrs: nounwind
-define hidden %runtime._string @main.someString(i8* %context) unnamed_addr #0 {
+define hidden %runtime._string @main.someString(i8* %context) unnamed_addr #1 {
 entry:
   ret %runtime._string { i8* getelementptr inbounds ([3 x i8], [3 x i8]* @"main$string", i32 0, i32 0), i32 3 }
 }
 
 ; Function Attrs: nounwind
-define hidden %runtime._string @main.zeroLengthString(i8* %context) unnamed_addr #0 {
+define hidden %runtime._string @main.zeroLengthString(i8* %context) unnamed_addr #1 {
 entry:
   ret %runtime._string zeroinitializer
 }
 
 ; Function Attrs: nounwind
-define hidden i32 @main.stringLen(i8* %s.data, i32 %s.len, i8* %context) unnamed_addr #0 {
+define hidden i32 @main.stringLen(i8* %s.data, i32 %s.len, i8* %context) unnamed_addr #1 {
 entry:
   ret i32 %s.len
 }
 
 ; Function Attrs: nounwind
-define hidden i8 @main.stringIndex(i8* %s.data, i32 %s.len, i32 %index, i8* %context) unnamed_addr #0 {
+define hidden i8 @main.stringIndex(i8* %s.data, i32 %s.len, i32 %index, i8* %context) unnamed_addr #1 {
 entry:
   %.not = icmp ult i32 %index, %s.len
   br i1 %.not, label %lookup.next, label %lookup.throw
 
-lookup.throw:                                     ; preds = %entry
-  call void @runtime.lookupPanic(i8* undef) #0
-  unreachable
-
 lookup.next:                                      ; preds = %entry
   %0 = getelementptr inbounds i8, i8* %s.data, i32 %index
   %1 = load i8, i8* %0, align 1
   ret i8 %1
+
+lookup.throw:                                     ; preds = %entry
+  call void @runtime.lookupPanic(i8* undef) #2
+  unreachable
 }
 
-declare void @runtime.lookupPanic(i8*)
+declare void @runtime.lookupPanic(i8*) #0
 
 ; Function Attrs: nounwind
-define hidden i1 @main.stringCompareEqual(i8* %s1.data, i32 %s1.len, i8* %s2.data, i32 %s2.len, i8* %context) unnamed_addr #0 {
+define hidden i1 @main.stringCompareEqual(i8* %s1.data, i32 %s1.len, i8* %s2.data, i32 %s2.len, i8* %context) unnamed_addr #1 {
 entry:
-  %0 = call i1 @runtime.stringEqual(i8* %s1.data, i32 %s1.len, i8* %s2.data, i32 %s2.len, i8* undef) #0
+  %0 = call i1 @runtime.stringEqual(i8* %s1.data, i32 %s1.len, i8* %s2.data, i32 %s2.len, i8* undef) #2
   ret i1 %0
 }
 
-declare i1 @runtime.stringEqual(i8*, i32, i8*, i32, i8*)
+declare i1 @runtime.stringEqual(i8*, i32, i8*, i32, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden i1 @main.stringCompareUnequal(i8* %s1.data, i32 %s1.len, i8* %s2.data, i32 %s2.len, i8* %context) unnamed_addr #0 {
+define hidden i1 @main.stringCompareUnequal(i8* %s1.data, i32 %s1.len, i8* %s2.data, i32 %s2.len, i8* %context) unnamed_addr #1 {
 entry:
-  %0 = call i1 @runtime.stringEqual(i8* %s1.data, i32 %s1.len, i8* %s2.data, i32 %s2.len, i8* undef) #0
+  %0 = call i1 @runtime.stringEqual(i8* %s1.data, i32 %s1.len, i8* %s2.data, i32 %s2.len, i8* undef) #2
   %1 = xor i1 %0, true
   ret i1 %1
 }
 
 ; Function Attrs: nounwind
-define hidden i1 @main.stringCompareLarger(i8* %s1.data, i32 %s1.len, i8* %s2.data, i32 %s2.len, i8* %context) unnamed_addr #0 {
+define hidden i1 @main.stringCompareLarger(i8* %s1.data, i32 %s1.len, i8* %s2.data, i32 %s2.len, i8* %context) unnamed_addr #1 {
 entry:
-  %0 = call i1 @runtime.stringLess(i8* %s2.data, i32 %s2.len, i8* %s1.data, i32 %s1.len, i8* undef) #0
+  %0 = call i1 @runtime.stringLess(i8* %s2.data, i32 %s2.len, i8* %s1.data, i32 %s1.len, i8* undef) #2
   ret i1 %0
 }
 
-declare i1 @runtime.stringLess(i8*, i32, i8*, i32, i8*)
+declare i1 @runtime.stringLess(i8*, i32, i8*, i32, i8*) #0
 
 ; Function Attrs: nounwind
-define hidden i8 @main.stringLookup(i8* %s.data, i32 %s.len, i8 %x, i8* %context) unnamed_addr #0 {
+define hidden i8 @main.stringLookup(i8* %s.data, i32 %s.len, i8 %x, i8* %context) unnamed_addr #1 {
 entry:
   %0 = zext i8 %x to i32
   %.not = icmp ult i32 %0, %s.len
   br i1 %.not, label %lookup.next, label %lookup.throw
 
-lookup.throw:                                     ; preds = %entry
-  call void @runtime.lookupPanic(i8* undef) #0
-  unreachable
-
 lookup.next:                                      ; preds = %entry
   %1 = getelementptr inbounds i8, i8* %s.data, i32 %0
   %2 = load i8, i8* %1, align 1
   ret i8 %2
+
+lookup.throw:                                     ; preds = %entry
+  call void @runtime.lookupPanic(i8* undef) #2
+  unreachable
 }
 
-attributes #0 = { nounwind }
+attributes #0 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #1 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
+attributes #2 = { nounwind }

compiler/volatile.go

@@ -3,28 +3,25 @@ package compiler
 // This file implements volatile loads/stores in runtime/volatile.LoadT and
 // runtime/volatile.StoreT as compiler builtins.
 
-import (
-	"golang.org/x/tools/go/ssa"
-	"tinygo.org/x/go-llvm"
-)
-
 // createVolatileLoad is the implementation of the intrinsic function
 // runtime/volatile.LoadT().
-func (b *builder) createVolatileLoad(instr *ssa.CallCommon) (llvm.Value, error) {
-	addr := b.getValue(instr.Args[0])
-	b.createNilCheck(instr.Args[0], addr, "deref")
+func (b *builder) createVolatileLoad() {
+	b.createFunctionStart(true)
+	addr := b.getValue(b.fn.Params[0])
+	b.createNilCheck(b.fn.Params[0], addr, "deref")
 	val := b.CreateLoad(addr, "")
 	val.SetVolatile(true)
-	return val, nil
+	b.CreateRet(val)
 }
 
 // createVolatileStore is the implementation of the intrinsic function
 // runtime/volatile.StoreT().
-func (b *builder) createVolatileStore(instr *ssa.CallCommon) (llvm.Value, error) {
-	addr := b.getValue(instr.Args[0])
-	val := b.getValue(instr.Args[1])
-	b.createNilCheck(instr.Args[0], addr, "deref")
+func (b *builder) createVolatileStore() {
+	b.createFunctionStart(true)
+	addr := b.getValue(b.fn.Params[0])
+	val := b.getValue(b.fn.Params[1])
+	b.createNilCheck(b.fn.Params[0], addr, "deref")
 	store := b.CreateStore(val, addr)
 	store.SetVolatile(true)
-	return llvm.Value{}, nil
+	b.CreateRetVoid()
 }

corpus_test.go

@@ -8,6 +8,7 @@ import (
 	"sync"
 	"testing"
 
+	"golang.org/x/tools/go/buildutil"
 	yaml "gopkg.in/yaml.v2"
 )
 
@@ -111,9 +112,11 @@ func TestCorpus(t *testing.T) {
 
 				opts := optionsFromTarget(target, sema)
 				opts.Directory = dir
-				opts.Tags = repo.Tags
+				var tags buildutil.TagsFlag
+				tags.Set(repo.Tags)
+				opts.Tags = []string(tags)
 
-				passed, err := Test(path, out, out, &opts, false, testing.Verbose(), false, "", "", "", "")
+				passed, err := Test(path, out, out, &opts, false, testing.Verbose(), false, "", "", "", false, "")
 				if err != nil {
 					t.Errorf("test error: %v", err)
 				}

go.mod

@@ -1,19 +1,33 @@
 module github.com/tinygo-org/tinygo
 
-go 1.16
+go 1.18
 
 require (
-	github.com/aykevl/go-wasm v0.0.2-0.20211119014117-0761b1ddcd1a
+	github.com/aykevl/go-wasm v0.0.2-0.20220616010729-4a0a888aebdc
 	github.com/blakesmith/ar v0.0.0-20150311145944-8bd4349a67f2
 	github.com/chromedp/cdproto v0.0.0-20220113222801-0725d94bb6ee
 	github.com/chromedp/chromedp v0.7.6
 	github.com/gofrs/flock v0.8.1
 	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 v0.1.8
-	go.bug.st/serial v1.1.3
-	golang.org/x/sys v0.0.0-20220114195835-da31bd327af9
+	github.com/mattn/go-tty v0.0.4
+	go.bug.st/serial v1.3.5
+	golang.org/x/sys v0.0.0-20220829200755-d48e67d00261
 	golang.org/x/tools v0.1.11
 	gopkg.in/yaml.v2 v2.4.0
-	tinygo.org/x/go-llvm v0.0.0-20220420140351-512c94c1e71f
+	tinygo.org/x/go-llvm v0.0.0-20220802112859-5bb0b77907a7
+)
+
+require (
+	github.com/chromedp/sysutil v1.0.0 // indirect
+	github.com/creack/goselect v0.1.2 // indirect
+	github.com/gobwas/httphead v0.1.0 // indirect
+	github.com/gobwas/pool v0.2.1 // indirect
+	github.com/gobwas/ws v1.1.0 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/mattn/go-isatty v0.0.12 // indirect
+	golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 // indirect
 )

go.sum

@@ -1,5 +1,5 @@
-github.com/aykevl/go-wasm v0.0.2-0.20211119014117-0761b1ddcd1a h1:QPU7APo6y/6VkCDq6HU3WWIUzER8iywSac23+1UQv60=
-github.com/aykevl/go-wasm v0.0.2-0.20211119014117-0761b1ddcd1a/go.mod h1:7sXyiaA0WtSogCu67R2252fQpVmJMh9JWJ9ddtGkpWw=
+github.com/aykevl/go-wasm v0.0.2-0.20220616010729-4a0a888aebdc h1:Yp49g+qqgQRPk/gcRSmAsXgnT16XPJ6Y5JM1poc6gYM=
+github.com/aykevl/go-wasm v0.0.2-0.20220616010729-4a0a888aebdc/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/chromedp/cdproto v0.0.0-20211126220118-81fa0469ad77/go.mod h1:At5TxYYdxkbQL0TSefRjhLE3Q0lgvqKKMSFUglJ7i1U=
@@ -12,7 +12,6 @@ github.com/chromedp/sysutil v1.0.0/go.mod h1:kgWmDdq8fTzXYcKIBqIYvRRTnYb9aNS9moA
 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 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/gobwas/httphead v0.1.0 h1:exrUm0f4YX0L7EBwZHuCF4GDp8aJfVeBrlLQrs6NqWU=
 github.com/gobwas/httphead v0.1.0/go.mod h1:O/RXo79gxV8G+RqlR/otEwx4Q36zl9rqC5u12GKvMCM=
 github.com/gobwas/pool v0.2.1 h1:xfeeEhW7pwmX8nuLVlqbzVc7udMDrwetjEv+TZIz1og=
@@ -23,61 +22,47 @@ github.com/gofrs/flock v0.8.1 h1:+gYjHKf32LDeiEEFhQaotPbLuUXjY5ZqxKgXy7n59aw=
 github.com/gofrs/flock v0.8.1/go.mod h1:F1TvTiK9OcQqauNUHlbJvyl9Qa1QvF/gOUDKA14jxHU=
 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/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/josharian/intern v1.0.0 h1:vlS4z54oSdjm0bgjRigI+G1HpF+tI+9rE5LLzOg8HmY=
 github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y=
 github.com/mailru/easyjson v0.7.7 h1:UGYAvKxe3sBsEDzO8ZeWOSlIQfWFlxbzLZe7hwFURr0=
 github.com/mailru/easyjson v0.7.7/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
 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=
 github.com/mattn/go-colorable v0.1.8 h1:c1ghPdyEDarC70ftn0y+A/Ee++9zz8ljHG1b13eJ0s8=
 github.com/mattn/go-colorable v0.1.8/go.mod h1:u6P/XSegPjTcexA+o6vUJrdnUu04hMope9wVRipJSqc=
+github.com/mattn/go-isatty v0.0.8/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s=
+github.com/mattn/go-isatty v0.0.10/go.mod h1:qgIWMr58cqv1PHHyhnkY9lrL7etaEgOFcMEpPG5Rm84=
 github.com/mattn/go-isatty v0.0.12 h1:wuysRhFDzyxgEmMf5xjvJ2M9dZoWAXNNr5LSBS7uHXY=
 github.com/mattn/go-isatty v0.0.12/go.mod h1:cbi8OIDigv2wuxKPP5vlRcQ1OAZbq2CE4Kysco4FUpU=
+github.com/mattn/go-runewidth v0.0.7/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/orisano/pixelmatch v0.0.0-20210112091706-4fa4c7ba91d5 h1:1SoBaSPudixRecmlHXb/GxmaD3fLMtHIDN13QujwQuc=
 github.com/orisano/pixelmatch v0.0.0-20210112091706-4fa4c7ba91d5/go.mod h1:nZgzbfBr3hhjoZnS66nKrHmduYNpc34ny7RK4z5/HM0=
 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/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
-github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
-github.com/yuin/goldmark v1.4.1/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
-go.bug.st/serial v1.1.3 h1:YEBxJa9pKS9Wdg46B/jiaKbvvbUrjhZZZITfJHEJhaE=
-go.bug.st/serial v1.1.3/go.mod h1:8TT7u/SwwNIpJ8QaG4s+HTjFt9ReXs2cdOU7ZEk50Dk=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
+go.bug.st/serial v1.3.5 h1:k50SqGZCnHZ2MiBQgzccXWG+kd/XpOs1jUljpDDKzaE=
+go.bug.st/serial v1.3.5/go.mod h1:z8CesKorE90Qr/oRSJiEuvzYRKol9r/anJZEb5kt304=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 h1:6zppjxzCulZykYSLyVDYbneBfbaBIQPYMevg0bEwv2s=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
-golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
-golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+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 v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200909081042-eff7692f9009/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201207223542-d4d67f95c62d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20211019181941-9d821ace8654/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211124211545-fe61309f8881/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220114195835-da31bd327af9 h1:XfKQ4OlFl8okEOr5UvAqFRVj8pY/4yfcXrddB8qAbU0=
-golang.org/x/sys v0.0.0-20220114195835-da31bd327af9/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
-golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
-golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/sys v0.0.0-20220829200755-d48e67d00261 h1:v6hYoSR9T5oet+pMXwUWkbiVqx/63mlHjefrHmxwfeY=
+golang.org/x/sys v0.0.0-20220829200755-d48e67d00261/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/tools v0.1.11 h1:loJ25fNOEhSXfHrpoGj91eCUThwdNX6u24rO1xnNteY=
 golang.org/x/tools v0.1.11/go.mod h1:SgwaegtQh8clINPpECJMqnxLv9I09HLqnW3RMqW0CA4=
-golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
-tinygo.org/x/go-llvm v0.0.0-20220420140351-512c94c1e71f h1:9/J+NpFTpAhYcbh1mC4dr9W/aAPnwrUh8dmq21xWdSM=
-tinygo.org/x/go-llvm v0.0.0-20220420140351-512c94c1e71f/go.mod h1:GFbusT2VTA4I+l4j80b17KFK+6whv69Wtny5U+T8RR0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+tinygo.org/x/go-llvm v0.0.0-20220802112859-5bb0b77907a7 h1:nSLR52mUw7DPQQVA3ZJFH63zjU4ME84fKiin6mdnYWc=
+tinygo.org/x/go-llvm v0.0.0-20220802112859-5bb0b77907a7/go.mod h1:GFbusT2VTA4I+l4j80b17KFK+6whv69Wtny5U+T8RR0=

goenv/goenv.go

@@ -6,6 +6,7 @@ import (
 	"bytes"
 	"errors"
 	"fmt"
+	"io/fs"
 	"os"
 	"os/exec"
 	"os/user"
@@ -41,10 +42,14 @@ var TINYGOROOT string
 func Get(name string) string {
 	switch name {
 	case "GOOS":
-		if dir := os.Getenv("GOOS"); dir != "" {
-			return dir
+		goos := os.Getenv("GOOS")
+		if goos == "" {
+			goos = runtime.GOOS
 		}
-		return runtime.GOOS
+		if goos == "android" {
+			goos = "linux"
+		}
+		return goos
 	case "GOARCH":
 		if dir := os.Getenv("GOARCH"); dir != "" {
 			return dir
@@ -122,7 +127,7 @@ func findWasmOpt() string {
 		}
 
 		_, err := os.Stat(path)
-		if err != nil && os.IsNotExist(err) {
+		if err != nil && errors.Is(err, fs.ErrNotExist) {
 			continue
 		}
 

goenv/version.go

@@ -4,7 +4,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
+	"os"
 	"path/filepath"
 	"regexp"
 	"strings"
@@ -12,7 +12,7 @@ import (
 
 // Version of TinyGo.
 // Update this value before release of new version of software.
-const Version = "0.24.0-dev"
+const Version = "0.26.0-dev"
 
 var (
 	// This variable is set at build time using -ldflags parameters.
@@ -54,10 +54,10 @@ func GetGorootVersion(goroot string) (major, minor int, err error) {
 // toolchain for the given GOROOT path. It is usually of the form `go1.x.y` but
 // can have some variations (for beta releases, for example).
 func GorootVersionString(goroot string) (string, error) {
-	if data, err := ioutil.ReadFile(filepath.Join(goroot, "VERSION")); err == nil {
+	if data, err := os.ReadFile(filepath.Join(goroot, "VERSION")); err == nil {
 		return string(data), nil
 
-	} else if data, err := ioutil.ReadFile(filepath.Join(
+	} else if data, err := os.ReadFile(filepath.Join(
 		goroot, "src", "internal", "buildcfg", "zbootstrap.go")); err == nil {
 
 		r := regexp.MustCompile("const version = `(.*)`")

interp/interp.go

@@ -30,10 +30,11 @@ type runner struct {
 	objects       []object                 // slice of objects in memory
 	globals       map[llvm.Value]int       // map from global to index in objects slice
 	start         time.Time
+	timeout       time.Duration
 	callsExecuted uint64
 }
 
-func newRunner(mod llvm.Module, debug bool) *runner {
+func newRunner(mod llvm.Module, timeout time.Duration, debug bool) *runner {
 	r := runner{
 		mod:           mod,
 		targetData:    llvm.NewTargetData(mod.DataLayout()),
@@ -42,6 +43,7 @@ func newRunner(mod llvm.Module, debug bool) *runner {
 		objects:       []object{{}},
 		globals:       make(map[llvm.Value]int),
 		start:         time.Now(),
+		timeout:       timeout,
 	}
 	r.pointerSize = uint32(r.targetData.PointerSize())
 	r.i8ptrType = llvm.PointerType(mod.Context().Int8Type(), 0)
@@ -58,8 +60,8 @@ 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, debug bool) error {
-	r := newRunner(mod, debug)
+func Run(mod llvm.Module, timeout time.Duration, debug bool) error {
+	r := newRunner(mod, timeout, debug)
 	defer r.dispose()
 
 	initAll := mod.NamedFunction("runtime.initAll")
@@ -199,10 +201,10 @@ func Run(mod llvm.Module, debug bool) error {
 
 // 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, 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, debug)
+	r := newRunner(mod, timeout, debug)
 	defer r.dispose()
 	initName := fn.Name()
 	if !strings.HasSuffix(initName, ".init") {

interp/interp_test.go

@@ -1,11 +1,11 @@
 package interp
 
 import (
-	"io/ioutil"
 	"os"
 	"strconv"
 	"strings"
 	"testing"
+	"time"
 
 	"tinygo.org/x/go-llvm"
 )
@@ -53,7 +53,7 @@ func runTest(t *testing.T, pathPrefix string) {
 	defer mod.Dispose()
 
 	// Perform the transform.
-	err = Run(mod, false)
+	err = Run(mod, 10*time.Minute, false)
 	if err != nil {
 		if err, match := err.(*Error); match {
 			println(err.Error())
@@ -87,7 +87,7 @@ func runTest(t *testing.T, pathPrefix string) {
 	pm.Run(mod)
 
 	// Read the expected output IR.
-	out, err := ioutil.ReadFile(pathPrefix + ".out.ll")
+	out, err := os.ReadFile(pathPrefix + ".out.ll")
 	if err != nil {
 		t.Fatalf("could not read output file %s: %v", pathPrefix+".out.ll", err)
 	}

interp/interpreter.go

@@ -17,8 +17,6 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 	locals := make([]value, len(fn.locals))
 	r.callsExecuted++
 
-	t0 := time.Since(r.start)
-
 	// Parameters are considered a kind of local values.
 	for i, param := range params {
 		locals[i] = param
@@ -143,11 +141,10 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 		}
 		switch inst.opcode {
 		case llvm.Ret:
-			const maxInterpSeconds = 180
-			if t0 > maxInterpSeconds*time.Second {
-				// Running for more than maxInterpSeconds seconds. This should never happen, but does.
+			if time.Since(r.start) > r.timeout {
+				// Running for more than the allowed timeout; This shouldn't happen, but it does.
 				// See github.com/tinygo-org/tinygo/issues/2124
-				return nil, mem, r.errorAt(fn.blocks[0].instructions[0], fmt.Errorf("interp: running for more than %d seconds, timing out (executed calls: %d)", maxInterpSeconds, r.callsExecuted))
+				return nil, mem, r.errorAt(fn.blocks[0].instructions[0], fmt.Errorf("interp: running for more than %s, timing out (executed calls: %d)", r.timeout, r.callsExecuted))
 			}
 
 			if len(operands) != 0 {
@@ -372,6 +369,11 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 				nBytes := uint32(operands[3].Uint())
 				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

loader/goroot.go

@@ -17,6 +17,7 @@ import (
 	"encoding/json"
 	"errors"
 	"io"
+	"io/fs"
 	"io/ioutil"
 	"os"
 	"os/exec"
@@ -45,7 +46,7 @@ func GetCachedGoroot(config *compileopts.Config) (string, error) {
 	}
 
 	// Find the overrides needed for the goroot.
-	overrides := pathsToOverride(needsSyscallPackage(config.BuildTags()))
+	overrides := pathsToOverride(config.GoMinorVersion, needsSyscallPackage(config.BuildTags()))
 
 	// Resolve the merge links within the goroot.
 	merge, err := listGorootMergeLinks(goroot, tinygoroot, overrides)
@@ -83,7 +84,7 @@ func GetCachedGoroot(config *compileopts.Config) (string, error) {
 	}
 
 	// Create a temporary directory to construct the goroot within.
-	tmpgoroot, err := ioutil.TempDir(goenv.Get("GOCACHE"), cachedGorootName+".tmp")
+	tmpgoroot, err := os.MkdirTemp(goenv.Get("GOCACHE"), cachedGorootName+".tmp")
 	if err != nil {
 		return "", err
 	}
@@ -122,13 +123,13 @@ func GetCachedGoroot(config *compileopts.Config) (string, error) {
 	// Rename the new merged gorooot into place.
 	err = os.Rename(tmpgoroot, cachedgoroot)
 	if err != nil {
-		if os.IsExist(err) {
+		if errors.Is(err, fs.ErrExist) {
 			// Another invocation of TinyGo also seems to have created a GOROOT.
 			// Use that one instead. Our new GOROOT will be automatically
 			// deleted by the defer above.
 			return cachedgoroot, nil
 		}
-		if runtime.GOOS == "windows" && os.IsPermission(err) {
+		if runtime.GOOS == "windows" && errors.Is(err, fs.ErrPermission) {
 			// On Windows, a rename with a destination directory that already
 			// exists does not result in an IsExist error, but rather in an
 			// access denied error. To be sure, check for this case by checking
@@ -222,7 +223,7 @@ func needsSyscallPackage(buildTags []string) bool {
 
 // The boolean indicates whether to merge the subdirs. True means merge, false
 // means use the TinyGo version.
-func pathsToOverride(needsSyscallPackage bool) map[string]bool {
+func pathsToOverride(goMinor int, needsSyscallPackage bool) map[string]bool {
 	paths := map[string]bool{
 		"":                      true,
 		"crypto/":               true,
@@ -234,7 +235,6 @@ func pathsToOverride(needsSyscallPackage bool) map[string]bool {
 		"internal/bytealg/":     false,
 		"internal/reflectlite/": false,
 		"internal/task/":        false,
-		"internal/itoa/":        false, // TODO: Remove when we drop support for go 1.16
 		"machine/":              false,
 		"net/":                  true,
 		"os/":                   true,
@@ -243,6 +243,13 @@ func pathsToOverride(needsSyscallPackage bool) map[string]bool {
 		"sync/":                 true,
 		"testing/":              true,
 	}
+
+	if goMinor >= 19 {
+		paths["crypto/internal/"] = true
+		paths["crypto/internal/boring/"] = true
+		paths["crypto/internal/boring/sig/"] = false
+	}
+
 	if needsSyscallPackage {
 		paths["syscall/"] = true // include syscall/js
 	}

loader/loader.go

@@ -13,7 +13,6 @@ import (
 	"go/token"
 	"go/types"
 	"io"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"path"
@@ -28,8 +27,6 @@ import (
 	"github.com/tinygo-org/tinygo/goenv"
 )
 
-var addInstances func(*types.Info)
-
 // Program holds all packages and some metadata about the program as a whole.
 type Program struct {
 	config       *compileopts.Config
@@ -159,6 +156,7 @@ func Load(config *compileopts.Config, inputPkg string, clangHeaders string, type
 			EmbedGlobals: make(map[string][]*EmbedFile),
 			info: types.Info{
 				Types:      make(map[ast.Expr]types.TypeAndValue),
+				Instances:  make(map[*ast.Ident]types.Instance),
 				Defs:       make(map[*ast.Ident]types.Object),
 				Uses:       make(map[*ast.Ident]types.Object),
 				Implicits:  make(map[ast.Node]types.Object),
@@ -166,9 +164,6 @@ func Load(config *compileopts.Config, inputPkg string, clangHeaders string, type
 				Selections: make(map[*ast.SelectorExpr]*types.Selection),
 			},
 		}
-		if addInstances != nil {
-			addInstances(&pkg.info)
-		}
 		err := decoder.Decode(&pkg.PackageJSON)
 		if err != nil {
 			if err == io.EOF {
@@ -269,7 +264,7 @@ func (p *Program) getOriginalPath(path string) string {
 			originalPath = realgorootPath
 		}
 		maybeInTinyGoRoot := false
-		for prefix := range pathsToOverride(needsSyscallPackage(p.config.BuildTags())) {
+		for prefix := range pathsToOverride(p.config.GoMinorVersion, needsSyscallPackage(p.config.BuildTags())) {
 			if runtime.GOOS == "windows" {
 				prefix = strings.ReplaceAll(prefix, "/", "\\")
 			}
@@ -335,7 +330,7 @@ func (p *Package) OriginalDir() string {
 // parseFile is a wrapper around parser.ParseFile.
 func (p *Package) parseFile(path string, mode parser.Mode) (*ast.File, error) {
 	originalPath := p.program.getOriginalPath(path)
-	data, err := ioutil.ReadFile(path)
+	data, err := os.ReadFile(path)
 	if err != nil {
 		return nil, err
 	}
@@ -445,7 +440,7 @@ func (p *Package) parseFiles() ([]*ast.File, error) {
 		var initialCFlags []string
 		initialCFlags = append(initialCFlags, p.program.config.CFlags()...)
 		initialCFlags = append(initialCFlags, "-I"+p.Dir)
-		generated, headerCode, cflags, ldflags, accessedFiles, errs := cgo.Process(files, p.program.workingDir, p.program.fset, initialCFlags, p.program.clangHeaders)
+		generated, headerCode, cflags, ldflags, accessedFiles, errs := cgo.Process(files, p.program.workingDir, p.ImportPath, p.program.fset, initialCFlags, p.program.clangHeaders)
 		p.CFlags = append(initialCFlags, cflags...)
 		p.CGoHeaders = headerCode
 		for path, hash := range accessedFiles {

loader/loader_go118.go

@@ -1,18 +0,0 @@
-//go:build go1.18
-// +build go1.18
-
-package loader
-
-// Workaround for Go 1.17 support. Should be removed once we drop Go 1.17
-// support.
-
-import (
-	"go/ast"
-	"go/types"
-)
-
-func init() {
-	addInstances = func(info *types.Info) {
-		info.Instances = make(map[*ast.Ident]types.Instance)
-	}
-}

main.go

@@ -26,12 +26,14 @@ import (
 	"time"
 
 	"github.com/google/shlex"
+	"github.com/inhies/go-bytesize"
 	"github.com/mattn/go-colorable"
 	"github.com/tinygo-org/tinygo/builder"
 	"github.com/tinygo-org/tinygo/compileopts"
 	"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/go-llvm"
 
 	"go.bug.st/serial"
@@ -194,7 +196,7 @@ func Build(pkgName, outpath string, options *compileopts.Options) error {
 
 // Test runs the tests in the given package. Returns whether the test passed and
 // possibly an error if the test failed to run.
-func Test(pkgName string, stdout, stderr io.Writer, options *compileopts.Options, testCompileOnly, testVerbose, testShort bool, testRunRegexp string, testBenchRegexp string, testBenchTime string, outpath string) (bool, error) {
+func Test(pkgName string, stdout, stderr io.Writer, options *compileopts.Options, testCompileOnly, testVerbose, testShort bool, testRunRegexp string, testBenchRegexp string, testBenchTime string, testBenchMem bool, outpath string) (bool, error) {
 	options.TestConfig.CompileTestBinary = true
 	config, err := builder.NewConfig(options)
 	if err != nil {
@@ -218,6 +220,9 @@ func Test(pkgName string, stdout, stderr io.Writer, options *compileopts.Options
 	if testBenchTime != "" {
 		flags = append(flags, "-test.benchtime="+testBenchTime)
 	}
+	if testBenchMem {
+		flags = append(flags, "-test.benchmem")
+	}
 
 	passed := false
 	err = buildAndRun(pkgName, config, os.Stdout, flags, nil, 0, func(cmd *exec.Cmd, result builder.BuildResult) error {
@@ -239,18 +244,37 @@ func Test(pkgName string, stdout, stderr io.Writer, options *compileopts.Options
 		// Tests are always run in the package directory.
 		cmd.Dir = result.MainDir
 
-		// Wasmtime needs a few extra flags to work.
+		// wasmtime is the default emulator used for `-target=wasi`. wasmtime
+		// is a WebAssembly runtime CLI with WASI enabled by default. However,
+		// only stdio are allowed by default. For example, while STDOUT routes
+		// to the host, other files don't. It also does not inherit environment
+		// variables from the host. Some tests read testdata files, often from
+		// outside the package directory. Other tests require temporary
+		// writeable directories. We allow this by adding wasmtime flags below.
 		if config.EmulatorName() == "wasmtime" {
-			// Add directories to the module root, but skip the current working
-			// directory which is already added by buildAndRun.
+			// At this point, The current working directory is at the package
+			// directory. Ex. $GOROOT/src/compress/flate for compress/flate.
+			// buildAndRun has already added arguments for wasmtime, that allow
+			// read-access to files such as "testdata/huffman-zero.in".
+			//
+			// Ex. main(.wasm) --dir=. -- -test.v
+
+			// Below adds additional wasmtime flags in case a test reads files
+			// outside its directory, like "../testdata/e.txt". This allows any
+			// relative directory up to the module root, even if the test never
+			// reads any files.
+			//
+			// Ex. --dir=.. --dir=../.. --dir=../../..
 			dirs := dirsToModuleRoot(result.MainDir, result.ModuleRoot)
 			var args []string
 			for _, d := range dirs[1:] {
 				args = append(args, "--dir="+d)
 			}
 
-			// create a new temp directory just for this run, announce it to os.TempDir() via TMPDIR
-			tmpdir, err := ioutil.TempDir("", "tinygotmp")
+			// Some tests create temp directories using os.MkdirTemp or via
+			// t.TempDir(). Create a writeable directory and map it to the
+			// default tempDir environment variable: TMPDIR.
+			tmpdir, err := os.MkdirTemp("", "tinygotmp")
 			if err != nil {
 				return fmt.Errorf("failed to create temporary directory: %w", err)
 			}
@@ -258,7 +282,8 @@ func Test(pkgName string, stdout, stderr io.Writer, options *compileopts.Options
 			// TODO: add option to not delete temp dir for debugging?
 			defer os.RemoveAll(tmpdir)
 
-			// Insert new argments at the front of the command line argments.
+			// The below re-organizes the arguments so that the current
+			// directory is added last.
 			args = append(args, cmd.Args[1:]...)
 			cmd.Args = append(cmd.Args[:1:1], args...)
 		}
@@ -350,16 +375,14 @@ func Flash(pkgName, port string, options *compileopts.Options) error {
 		// do we need port reset to put MCU into bootloader mode?
 		if config.Target.PortReset == "true" && flashMethod != "openocd" {
 			port, err := getDefaultPort(port, config.Target.SerialPort)
-			if err != nil {
-				return err
+			if err == nil {
+				err = touchSerialPortAt1200bps(port)
+				if err != nil {
+					return &commandError{"failed to reset port", result.Binary, err}
+				}
+				// give the target MCU a chance to restart into bootloader
+				time.Sleep(3 * time.Second)
 			}
-
-			err = touchSerialPortAt1200bps(port)
-			if err != nil {
-				return &commandError{"failed to reset port", result.Binary, err}
-			}
-			// give the target MCU a chance to restart into bootloader
-			time.Sleep(3 * time.Second)
 		}
 
 		// this flashing method copies the binary data to a Mass Storage Device (msd)
@@ -400,7 +423,6 @@ func Flash(pkgName, port string, options *compileopts.Options) error {
 			if err != nil {
 				return &commandError{"failed to flash", result.Binary, err}
 			}
-			return nil
 		case "msd":
 			switch fileExt {
 			case ".uf2":
@@ -408,13 +430,11 @@ func Flash(pkgName, port string, options *compileopts.Options) error {
 				if err != nil {
 					return &commandError{"failed to flash", result.Binary, err}
 				}
-				return nil
 			case ".hex":
 				err := flashHexUsingMSD(config.Target.FlashVolume, result.Binary, config.Options)
 				if err != nil {
 					return &commandError{"failed to flash", result.Binary, err}
 				}
-				return nil
 			default:
 				return errors.New("mass storage device flashing currently only supports uf2 and hex")
 			}
@@ -435,7 +455,6 @@ func Flash(pkgName, port string, options *compileopts.Options) error {
 			if err != nil {
 				return &commandError{"failed to flash", result.Binary, err}
 			}
-			return nil
 		case "bmp":
 			gdb, err := config.Target.LookupGDB()
 			if err != nil {
@@ -454,10 +473,13 @@ func Flash(pkgName, port string, options *compileopts.Options) error {
 			if err != nil {
 				return &commandError{"failed to flash", result.Binary, err}
 			}
-			return nil
 		default:
 			return fmt.Errorf("unknown flash method: %s", flashMethod)
 		}
+		if options.Monitor {
+			return Monitor("", options)
+		}
+		return nil
 	})
 }
 
@@ -1017,18 +1039,6 @@ func getDefaultPort(portFlag string, usbInterfaces []string) (port string, err e
 			// available in the system.
 			ports = secondaryPorts
 		}
-
-		if len(ports) == 0 {
-			// fallback
-			switch runtime.GOOS {
-			case "darwin":
-				ports, err = filepath.Glob("/dev/cu.usb*")
-			case "linux":
-				ports, err = filepath.Glob("/dev/ttyACM*")
-			case "windows":
-				ports, err = serial.GetPortsList()
-			}
-		}
 	default:
 		return "", errors.New("unable to search for a default USB device to be flashed on this OS")
 	}
@@ -1042,7 +1052,9 @@ func getDefaultPort(portFlag string, usbInterfaces []string) (port string, err e
 	}
 
 	if len(portCandidates) == 0 {
-		if len(ports) == 1 {
+		if len(usbInterfaces) > 0 {
+			return "", errors.New("unable to search for a default USB device - use -port flag, available ports are " + strings.Join(ports, ", "))
+		} else if len(ports) == 1 {
 			return ports[0], nil
 		} else {
 			return "", errors.New("multiple serial ports available - use -port flag, available ports are " + strings.Join(ports, ", "))
@@ -1107,6 +1119,7 @@ func usage(command string) {
 		fmt.Fprintln(os.Stderr, "  flash:   compile and flash to the device")
 		fmt.Fprintln(os.Stderr, "  gdb:     run/flash and immediately enter GDB")
 		fmt.Fprintln(os.Stderr, "  lldb:    run/flash and immediately enter LLDB")
+		fmt.Fprintln(os.Stderr, "  monitor: open communication port")
 		fmt.Fprintln(os.Stderr, "  env:     list environment variables used during build")
 		fmt.Fprintln(os.Stderr, "  list:    run go list using the TinyGo root")
 		fmt.Fprintln(os.Stderr, "  clean:   empty cache directory ("+goenv.Get("GOCACHE")+")")
@@ -1296,11 +1309,19 @@ func main() {
 	scheduler := flag.String("scheduler", "", "which scheduler to use (none, tasks, asyncify)")
 	serial := flag.String("serial", "", "which serial output to use (none, uart, usb)")
 	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")
 	printIR := flag.Bool("printir", false, "print LLVM IR")
 	dumpSSA := flag.Bool("dumpssa", false, "dump internal Go SSA")
 	verifyIR := flag.Bool("verifyir", false, "run extra verification steps on LLVM IR")
-	tags := flag.String("tags", "", "a space-separated list of extra build tags")
+	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")
+	var stackSize uint64
+	flag.Func("stack-size", "goroutine stack size (if unknown at compile time)", func(s string) error {
+		size, err := bytesize.Parse(s)
+		stackSize = uint64(size)
+		return err
+	})
 	printSize := flag.String("size", "", "print sizes (none, short, full)")
 	printStacks := flag.Bool("print-stacks", false, "print stack sizes of goroutines")
 	printAllocsString := flag.String("print-allocs", "", "regular expression of functions for which heap allocations should be printed")
@@ -1315,6 +1336,8 @@ func main() {
 	wasmAbi := flag.String("wasm-abi", "", "WebAssembly ABI conventions: js (no i64 params) or generic")
 	llvmFeatures := flag.String("llvm-features", "", "comma separated LLVM features to enable")
 	cpuprofile := flag.String("cpuprofile", "", "cpuprofile output")
+	monitor := flag.Bool("monitor", false, "enable serial monitor")
+	baudrate := flag.Int("baudrate", 115200, "baudrate of serial monitor")
 
 	var flagJSON, flagDeps, flagTest bool
 	if command == "help" || command == "list" || command == "info" || command == "build" {
@@ -1332,6 +1355,7 @@ func main() {
 	var testBenchRegexp *string
 	var testBenchTime *string
 	var testRunRegexp *string
+	var testBenchMem *bool
 	if command == "help" || command == "test" {
 		testCompileOnlyFlag = flag.Bool("c", false, "compile the test binary but do not run it")
 		testVerboseFlag = flag.Bool("v", false, "verbose: print additional output")
@@ -1339,6 +1363,7 @@ func main() {
 		testRunRegexp = flag.String("run", "", "run: regexp of tests to run")
 		testBenchRegexp = flag.String("bench", "", "run: regexp of benchmarks to run")
 		testBenchTime = flag.String("benchtime", "", "run each benchmark for duration `d`")
+		testBenchMem = flag.Bool("benchmem", false, "show memory stats for benchmarks")
 	}
 
 	// Early command processing, before commands are interpreted by the Go flag
@@ -1379,12 +1404,14 @@ func main() {
 		GOARCH:          goenv.Get("GOARCH"),
 		GOARM:           goenv.Get("GOARM"),
 		Target:          *target,
+		StackSize:       stackSize,
 		Opt:             *opt,
 		GC:              *gc,
 		PanicStrategy:   *panicStrategy,
 		Scheduler:       *scheduler,
 		Serial:          *serial,
 		Work:            *work,
+		InterpTimeout:   *interpTimeout,
 		PrintIR:         *printIR,
 		DumpSSA:         *dumpSSA,
 		VerifyIR:        *verifyIR,
@@ -1393,13 +1420,15 @@ func main() {
 		PrintSizes:      *printSize,
 		PrintStacks:     *printStacks,
 		PrintAllocs:     printAllocs,
-		Tags:            *tags,
+		Tags:            []string(tags),
 		GlobalValues:    globalVarValues,
 		WasmAbi:         *wasmAbi,
 		Programmer:      *programmer,
 		OpenOCDCommands: ocdCommands,
 		LLVMFeatures:    *llvmFeatures,
 		PrintJSON:       flagJSON,
+		Monitor:         *monitor,
+		BaudRate:        *baudrate,
 	}
 	if *printCommands {
 		options.PrintCommands = printCommand
@@ -1467,7 +1496,7 @@ func main() {
 			fmt.Fprintf(os.Stderr, "Unknown library: %s\n", name)
 			os.Exit(1)
 		}
-		tmpdir, err := ioutil.TempDir("", "tinygo*")
+		tmpdir, err := os.MkdirTemp("", "tinygo*")
 		if err != nil {
 			handleCompilerError(err)
 		}
@@ -1568,7 +1597,7 @@ func main() {
 				defer close(buf.done)
 				stdout := (*testStdout)(buf)
 				stderr := (*testStderr)(buf)
-				passed, err := Test(pkgName, stdout, stderr, options, *testCompileOnlyFlag, *testVerboseFlag, *testShortFlag, *testRunRegexp, *testBenchRegexp, *testBenchTime, outpath)
+				passed, err := Test(pkgName, stdout, stderr, options, *testCompileOnlyFlag, *testVerboseFlag, *testShortFlag, *testRunRegexp, *testBenchRegexp, *testBenchTime, *testBenchMem, outpath)
 				if err != nil {
 					printCompilerError(func(args ...interface{}) {
 						fmt.Fprintln(stderr, args...)
@@ -1590,6 +1619,9 @@ func main() {
 			fmt.Println("FAIL")
 			os.Exit(1)
 		}
+	case "monitor":
+		err := Monitor(*port, options)
+		handleCompilerError(err)
 	case "targets":
 		dir := filepath.Join(goenv.Get("TINYGOROOT"), "targets")
 		entries, err := ioutil.ReadDir(dir)
@@ -1668,7 +1700,6 @@ func main() {
 			fmt.Printf("LLVM triple:       %s\n", config.Triple())
 			fmt.Printf("GOOS:              %s\n", config.GOOS())
 			fmt.Printf("GOARCH:            %s\n", config.GOARCH())
-			fmt.Printf("GOARM:             %s\n", config.GOARM())
 			fmt.Printf("build tags:        %s\n", strings.Join(config.BuildTags(), " "))
 			fmt.Printf("garbage collector: %s\n", config.GC())
 			fmt.Printf("scheduler:         %s\n", config.Scheduler())

main_test.go

@@ -10,7 +10,6 @@ import (
 	"flag"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"reflect"
@@ -52,6 +51,7 @@ func TestBuild(t *testing.T) {
 		"embed/",
 		"float.go",
 		"gc.go",
+		"generics.go",
 		"goroutines.go",
 		"init.go",
 		"init_multi.go",
@@ -66,21 +66,10 @@ func TestBuild(t *testing.T) {
 		"stdlib.go",
 		"string.go",
 		"structs.go",
+		"testing.go",
+		"timers.go",
 		"zeroalloc.go",
 	}
-	_, minor, err := goenv.GetGorootVersion(goenv.Get("GOROOT"))
-	if err != nil {
-		t.Fatal("could not read version from GOROOT:", err)
-	}
-	if minor >= 17 {
-		tests = append(tests, "go1.17.go")
-	}
-	if minor >= 18 {
-		tests = append(tests, "generics.go")
-		tests = append(tests, "testing_go118.go")
-	} else {
-		tests = append(tests, "testing.go")
-	}
 
 	if *testTarget != "" {
 		// This makes it possible to run one specific test (instead of all),
@@ -181,6 +170,14 @@ func runPlatTests(options compileopts.Options, tests []string, t *testing.T) {
 	}
 
 	for _, name := range tests {
+		if options.GOOS == "linux" && (options.GOARCH == "arm" || options.GOARCH == "386") {
+			switch name {
+			case "timers.go":
+				// Timer tests do not work because syscall.seek is implemented
+				// as Assembly in mainline Go and causes linker failure
+				continue
+			}
+		}
 		if options.Target == "simavr" {
 			// Not all tests are currently supported on AVR.
 			// Skip the ones that aren't.
@@ -193,7 +190,7 @@ func runPlatTests(options compileopts.Options, tests []string, t *testing.T) {
 				// Does not pass due to high mark false positive rate.
 				continue
 
-			case "json.go", "stdlib.go", "testing.go", "testing_go118.go":
+			case "json.go", "stdlib.go", "testing.go":
 				// Breaks interp.
 				continue
 
@@ -209,6 +206,11 @@ func runPlatTests(options compileopts.Options, tests []string, t *testing.T) {
 				// CGo does not work on AVR.
 				continue
 
+			case "timers.go":
+				// Doesn't compile:
+				//   panic: compiler: could not store type code number inside interface type code
+				continue
+
 			default:
 			}
 		}
@@ -244,6 +246,13 @@ func runPlatTests(options compileopts.Options, tests []string, t *testing.T) {
 			runTest("rand.go", options, t, nil, nil)
 		})
 	}
+	if options.Target != "wasi" && options.Target != "wasm" {
+		// The recover() builtin isn't supported yet on WebAssembly and Windows.
+		t.Run("recover.go", func(t *testing.T) {
+			t.Parallel()
+			runTest("recover.go", options, t, nil, nil)
+		})
+	}
 }
 
 func emuCheck(t *testing.T, options compileopts.Options) {
@@ -253,10 +262,11 @@ func emuCheck(t *testing.T, options compileopts.Options) {
 		t.Fatal("failed to load target spec:", err)
 	}
 	if spec.Emulator != "" {
-		_, err := exec.LookPath(strings.SplitN(spec.Emulator, " ", 2)[0])
+		emulatorCommand := strings.SplitN(spec.Emulator, " ", 2)[0]
+		_, err := exec.LookPath(emulatorCommand)
 		if err != nil {
 			if errors.Is(err, exec.ErrNotFound) {
-				t.Skipf("emulator not installed: %q", spec.Emulator[0])
+				t.Skipf("emulator not installed: %q", emulatorCommand)
 			}
 
 			t.Errorf("searching for emulator: %v", err)
@@ -268,14 +278,15 @@ func emuCheck(t *testing.T, options compileopts.Options) {
 func optionsFromTarget(target string, sema chan struct{}) compileopts.Options {
 	return compileopts.Options{
 		// GOOS/GOARCH are only used if target == ""
-		GOOS:      goenv.Get("GOOS"),
-		GOARCH:    goenv.Get("GOARCH"),
-		GOARM:     goenv.Get("GOARM"),
-		Target:    target,
-		Semaphore: sema,
-		Debug:     true,
-		VerifyIR:  true,
-		Opt:       "z",
+		GOOS:          goenv.Get("GOOS"),
+		GOARCH:        goenv.Get("GOARCH"),
+		GOARM:         goenv.Get("GOARM"),
+		Target:        target,
+		Semaphore:     sema,
+		InterpTimeout: 180 * time.Second,
+		Debug:         true,
+		VerifyIR:      true,
+		Opt:           "z",
 	}
 }
 
@@ -285,12 +296,13 @@ func optionsFromTarget(target string, sema chan struct{}) compileopts.Options {
 func optionsFromOSARCH(osarch string, sema chan struct{}) compileopts.Options {
 	parts := strings.Split(osarch, "/")
 	options := compileopts.Options{
-		GOOS:      parts[0],
-		GOARCH:    parts[1],
-		Semaphore: sema,
-		Debug:     true,
-		VerifyIR:  true,
-		Opt:       "z",
+		GOOS:          parts[0],
+		GOARCH:        parts[1],
+		Semaphore:     sema,
+		InterpTimeout: 180 * time.Second,
+		Debug:         true,
+		VerifyIR:      true,
+		Opt:           "z",
 	}
 	if options.GOARCH == "arm" {
 		options.GOARM = parts[2]
@@ -312,7 +324,7 @@ func runTestWithConfig(name string, t *testing.T, options compileopts.Options, c
 	if path[len(path)-1] == '/' {
 		txtpath = path + "out.txt"
 	}
-	expected, err := ioutil.ReadFile(txtpath)
+	expected, err := os.ReadFile(txtpath)
 	if err != nil {
 		t.Fatal("could not read expected output file:", err)
 	}
@@ -342,6 +354,7 @@ func runTestWithConfig(name string, t *testing.T, options compileopts.Options, c
 		actual = bytes.Replace(actual, []byte{0x1b, '[', '3', '2', 'm'}, nil, -1)
 		actual = bytes.Replace(actual, []byte{0x1b, '[', '0', 'm'}, nil, -1)
 		actual = bytes.Replace(actual, []byte{'.', '.', '\n'}, []byte{'\n'}, -1)
+		actual = bytes.Replace(actual, []byte{'\n', '.', '\n'}, []byte{'\n', '\n'}, -1)
 	}
 	if name == "testing.go" {
 		// Strip actual time.
@@ -422,7 +435,7 @@ func TestTest(t *testing.T) {
 				defer out.Close()
 
 				opts := targ.opts
-				passed, err := Test("github.com/tinygo-org/tinygo/tests/testing/pass", out, out, &opts, false, false, false, "", "", "", "")
+				passed, err := Test("github.com/tinygo-org/tinygo/tests/testing/pass", out, out, &opts, false, false, false, "", "", "", false, "")
 				if err != nil {
 					t.Errorf("test error: %v", err)
 				}
@@ -443,7 +456,7 @@ func TestTest(t *testing.T) {
 				defer out.Close()
 
 				opts := targ.opts
-				passed, err := Test("github.com/tinygo-org/tinygo/tests/testing/fail", out, out, &opts, false, false, false, "", "", "", "")
+				passed, err := Test("github.com/tinygo-org/tinygo/tests/testing/fail", out, out, &opts, false, false, false, "", "", "", false, "")
 				if err != nil {
 					t.Errorf("test error: %v", err)
 				}
@@ -470,7 +483,7 @@ func TestTest(t *testing.T) {
 
 				var output bytes.Buffer
 				opts := targ.opts
-				passed, err := Test("github.com/tinygo-org/tinygo/tests/testing/nothing", io.MultiWriter(&output, out), out, &opts, false, false, false, "", "", "", "")
+				passed, err := Test("github.com/tinygo-org/tinygo/tests/testing/nothing", io.MultiWriter(&output, out), out, &opts, false, false, false, "", "", "", false, "")
 				if err != nil {
 					t.Errorf("test error: %v", err)
 				}
@@ -494,7 +507,7 @@ func TestTest(t *testing.T) {
 				defer out.Close()
 
 				opts := targ.opts
-				passed, err := Test("github.com/tinygo-org/tinygo/tests/testing/builderr", out, out, &opts, false, false, false, "", "", "", "")
+				passed, err := Test("github.com/tinygo-org/tinygo/tests/testing/builderr", out, out, &opts, false, false, false, "", "", "", false, "")
 				if err == nil {
 					t.Error("test did not error")
 				}

monitor.go

@@ -0,0 +1,106 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/signal"
+	"time"
+
+	"github.com/mattn/go-tty"
+	"github.com/tinygo-org/tinygo/builder"
+	"github.com/tinygo-org/tinygo/compileopts"
+	"go.bug.st/serial"
+)
+
+// Monitor connects to the given port and reads/writes the serial port.
+func Monitor(port string, options *compileopts.Options) error {
+	config, err := builder.NewConfig(options)
+	if err != nil {
+		return err
+	}
+
+	wait := 300
+	for i := 0; i <= wait; i++ {
+		port, err = getDefaultPort(port, config.Target.SerialPort)
+		if err != nil {
+			if i < wait {
+				time.Sleep(10 * time.Millisecond)
+				continue
+			}
+			return err
+		}
+		break
+	}
+
+	br := options.BaudRate
+	if br <= 0 {
+		br = 115200
+	}
+
+	wait = 300
+	var p serial.Port
+	for i := 0; i <= wait; i++ {
+		p, err = serial.Open(port, &serial.Mode{BaudRate: br})
+		if err != nil {
+			if i < wait {
+				time.Sleep(10 * time.Millisecond)
+				continue
+			}
+			return err
+		}
+		break
+	}
+	defer p.Close()
+
+	tty, err := tty.Open()
+	if err != nil {
+		return err
+	}
+	defer tty.Close()
+
+	sig := make(chan os.Signal, 1)
+	signal.Notify(sig, os.Interrupt)
+	defer signal.Stop(sig)
+
+	go func() {
+		<-sig
+		tty.Close()
+		os.Exit(0)
+	}()
+
+	fmt.Printf("Connected to %s. Press Ctrl-C to exit.\n", port)
+
+	errCh := make(chan error, 1)
+
+	go func() {
+		buf := make([]byte, 100*1024)
+		for {
+			n, err := p.Read(buf)
+			if err != nil {
+				errCh <- fmt.Errorf("read error: %w", err)
+				return
+			}
+
+			if n == 0 {
+				continue
+			}
+			fmt.Printf("%v", string(buf[:n]))
+		}
+	}()
+
+	go func() {
+		for {
+			r, err := tty.ReadRune()
+			if err != nil {
+				errCh <- err
+				return
+			}
+			if r == 0 {
+				continue
+			}
+			p.Write([]byte(string(r)))
+		}
+	}()
+
+	return <-errCh
+}

src/crypto/internal/boring/sig/sig_other.go

@@ -0,0 +1,17 @@
+// Package sig stubs crypto/internal/boring/sig
+package sig
+
+// BoringCrypto indicates that the BoringCrypto module is present.
+func BoringCrypto() {
+
+}
+
+// FIPSOnly indicates that package crypto/tls/fipsonly is present.
+func FIPSOnly() {
+
+}
+
+// StandardCrypto indicates that standard Go crypto is present.
+func StandardCrypto() {
+
+}

src/crypto/rand/rand_arc4random.go

@@ -1,3 +1,4 @@
+//go:build darwin || tinygo.wasm
 // +build darwin tinygo.wasm
 
 // This implementation of crypto/rand uses the arc4random_buf function
@@ -26,5 +27,6 @@ func (r *reader) Read(b []byte) (n int, err error) {
 }
 
 // void arc4random_buf(void *buf, size_t buflen);
+//
 //export arc4random_buf
 func libc_arc4random_buf(buf unsafe.Pointer, buflen uint)

src/crypto/rand/rand_baremetal.go

@@ -1,5 +1,5 @@
-//go:build stm32 || (sam && atsamd51) || (sam && atsame5x)
-// +build stm32 sam,atsamd51 sam,atsame5x
+//go:build nrf || stm32 || (sam && atsamd51) || (sam && atsame5x)
+// +build nrf stm32 sam,atsamd51 sam,atsame5x
 
 package rand
 

src/crypto/rand/rand_urandom.go

@@ -1,3 +1,4 @@
+//go:build linux && !baremetal && !wasi
 // +build linux,!baremetal,!wasi
 
 // This implementation of crypto/rand uses the /dev/urandom pseudo-file to

src/crypto/rand/rand_windows.go

@@ -38,5 +38,6 @@ func (r *reader) Read(b []byte) (n int, err error) {
 // Cryptographically secure random number generator.
 // https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/rand-s?view=msvc-170
 // errno_t rand_s(unsigned int* randomValue);
+//
 //export rand_s
 func libc_rand_s(randomValue *uint32) int32

src/device/arm/arm.go

@@ -2,31 +2,31 @@
 //
 // Original copyright:
 //
-//     Copyright (c) 2009 - 2015 ARM LIMITED
+//	Copyright (c) 2009 - 2015 ARM LIMITED
 //
-//     All rights reserved.
-//     Redistribution and use in source and binary forms, with or without
-//     modification, are permitted provided that the following conditions are met:
-//     - Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     - Redistributions in binary form must reproduce the above copyright
-//       notice, this list of conditions and the following disclaimer in the
-//       documentation and/or other materials provided with the distribution.
-//     - Neither the name of ARM nor the names of its contributors may be used
-//       to endorse or promote products derived from this software without
-//       specific prior written permission.
+//	All rights reserved.
+//	Redistribution and use in source and binary forms, with or without
+//	modification, are permitted provided that the following conditions are met:
+//	- Redistributions of source code must retain the above copyright
+//	  notice, this list of conditions and the following disclaimer.
+//	- Redistributions in binary form must reproduce the above copyright
+//	  notice, this list of conditions and the following disclaimer in the
+//	  documentation and/or other materials provided with the distribution.
+//	- Neither the name of ARM nor the names of its contributors may be used
+//	  to endorse or promote products derived from this software without
+//	  specific prior written permission.
 //
-//     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-//     AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-//     IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-//     ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
-//     LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-//     CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-//     SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-//     INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-//     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-//     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-//     POSSIBILITY OF SUCH DAMAGE.
+//	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+//	AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+//	IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+//	ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
+//	LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+//	CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+//	SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+//	INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+//	CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+//	ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+//	POSSIBILITY OF SUCH DAMAGE.
 package arm
 
 import (
@@ -46,12 +46,12 @@ func Asm(asm string)
 // effects, as it would otherwise be optimized away. The inline assembly string
 // recognizes template values in the form {name}, like so:
 //
-//     arm.AsmFull(
-//         "str {value}, {result}",
-//         map[string]interface{}{
-//             "value":  1
-//             "result": &dest,
-//         })
+//	arm.AsmFull(
+//	    "str {value}, {result}",
+//	    map[string]interface{}{
+//	        "value":  1
+//	        "result": &dest,
+//	    })
 //
 // You can use {} in the asm string (which expands to a register) to set the
 // return value.