begin debugging gvisor crash

2026-08-29 16:59:02 +00:00 · 2026-07-06 13:27:24 -03:00
648 changed files with 2935 additions and 21985 deletions
@@ -40,13 +40,13 @@ jobs:
      - name: Install Go
        uses: actions/setup-go@v6
        with:
-          go-version: '1.27.0'
+          go-version: '1.26.4'
          cache: true
      - name: Restore LLVM source cache
        uses: actions/cache/restore@v5
        id: cache-llvm-source
        with:
-          key: llvm-source-22-${{ matrix.os }}-v1
+          key: llvm-source-20-${{ matrix.os }}-v1
          path: |
            llvm-project/clang/lib/Headers
            llvm-project/clang/include
@@ -71,7 +71,7 @@ jobs:
        uses: actions/cache/restore@v5
        id: cache-llvm-build
        with:
-          key: llvm-build-22-${{ matrix.os }}-v1
+          key: llvm-build-20-${{ matrix.os }}-v2
          path: llvm-build
      - name: Build LLVM
        if: steps.cache-llvm-build.outputs.cache-hit != 'true'
@@ -107,7 +107,7 @@ jobs:
          path: build/tinygo${{ steps.version.outputs.version }}.darwin-${{ matrix.goarch }}.tar.gz
          archive: false
      - name: Smoke tests
-        run: make smoketest-quick TINYGO=$(PWD)/build/tinygo
+        run: make smoketest TINYGO=$(PWD)/build/tinygo
  test-macos-homebrew:
    name: homebrew-install
    runs-on: macos-latest
@@ -131,7 +131,7 @@ jobs:
      - name: Install Go
        uses: actions/setup-go@v6
        with:
-          go-version: '1.27.0'
+          go-version: '1.26.4'
          cache: true
      - name: Build TinyGo (LLVM ${{ matrix.version }})
        run: go install -tags=llvm${{ matrix.version }}
@@ -20,7 +20,7 @@ jobs:
    env:
      # Oldest versions currently supported by TinyGo
      LLVM: "15"
-      Go: "1.25" # when updating this, also update minorMin in builder/config.go
+      Go: "1.24" # when updating this, also update minorMin in builder/config.go
    steps:
      - name: Checkout
        uses: actions/checkout@v6
@@ -46,7 +46,7 @@ jobs:
        uses: actions/cache/restore@v5
        id: cache-llvm-source
        with:
-          key: llvm-source-22-linux-compat
+          key: llvm-source-20-linux-compat
          path: llvm-project/compiler-rt
      - name: Download LLVM source
        if: steps.cache-llvm-source.outputs.cache-hit != 'true'
@@ -69,4 +69,4 @@ jobs:
      - run: tinygo version
      - run: make gen-device -j4
      - run: go test -tags=llvm${{ env.LLVM }} -short -skip=TestErrors
-      - run: make smoketest-quick XTENSA=0
+      - run: make smoketest XTENSA=0
@@ -1,35 +0,0 @@
-#!/bin/sh
-
-# Print the CHANGELOG.md entry for one version, to use as release notes.
-# The file uses a setext heading: the bare version, then a line of dashes.
-
-set -e
-
-version="$1"
-if [ -z "$version" ]; then
-	echo "usage: $0 <version>" >&2
-	exit 1
-fi
-
-notes=$(awk -v version="$version" '
-	found {
-		if ($0 ~ /^---+$/ && previous != "") { previous = ""; exit }
-		if (previous != "") print previous
-		previous = $0
-		next
-	}
-	$0 ~ /^---+$/ && previous == version {
-		found = 1
-		previous = ""
-		next
-	}
-	{ previous = $0 }
-	END { if (found && previous != "") print previous }
-' CHANGELOG.md)
-
-if [ -z "$notes" ]; then
-	echo "no CHANGELOG.md entry for version $version" >&2
-	exit 1
-fi
-
-echo "$notes"
@@ -23,7 +23,7 @@ jobs:
      - name: Install Go
        uses: actions/setup-go@v6
        with:
-          go-version: '1.27.0'
+          go-version: '1.26.4'
          cache: true
      - name: Run go mod tidy
        run: go mod tidy
@@ -36,7 +36,7 @@ jobs:
    # statically linked binary.
    runs-on: ubuntu-latest
    container:
-      image: golang:1.27-alpine
+      image: golang:1.26-alpine
    outputs:
      version: ${{ steps.version.outputs.version }}
    steps:
@@ -66,7 +66,7 @@ jobs:
        uses: actions/cache/restore@v5
        id: cache-llvm-source
        with:
-          key: llvm-source-22-linux-alpine-v1
+          key: llvm-source-20-linux-alpine-v2
          path: |
            llvm-project/clang/lib/Headers
            llvm-project/clang/include
@@ -91,7 +91,7 @@ jobs:
        uses: actions/cache/restore@v5
        id: cache-llvm-build
        with:
-          key: llvm-build-22-linux-alpine-v1
+          key: llvm-build-20-linux-alpine-v2
          path: llvm-build
      - name: Build LLVM
        if: steps.cache-llvm-build.outputs.cache-hit != 'true'
@@ -115,7 +115,7 @@ jobs:
        uses: actions/cache@v5
        id: cache-binaryen
        with:
-          key: binaryen-linux-alpine-v3
+          key: binaryen-linux-alpine-v2
          path: build/wasm-opt
      - name: Build Binaryen
        if: steps.cache-binaryen.outputs.cache-hit != 'true'
@@ -160,7 +160,7 @@ jobs:
      - name: Install Go
        uses: actions/setup-go@v6
        with:
-          go-version: '1.27.0'
+          go-version: '1.26.4'
          cache: true
      - name: Install wasmtime
        uses: bytecodealliance/actions/wasmtime/setup@v1
@@ -180,43 +180,7 @@ jobs:
      - run: make tinygo-test-wasip1-fast
      - run: make tinygo-test-wasip2-fast
      - run: make tinygo-test-wasm
-  smoketest-linux:
-    # Build a binary for every supported board, using the binaries built in the
-    # build-linux job. This is the only job that runs the full smoke test. The
-    # result does not depend on the host OS, so the other jobs build a
-    # representative board for each architecture with smoketest-quick.
-    runs-on: ubuntu-latest
-    needs: build-linux
-    strategy:
-      fail-fast: false
-      matrix:
-        # Balanced with the measured build time of each group, so that the
-        # shards finish at about the same time.
-        group:
-          - smoketest-rp2xxx smoketest-selftest smoketest-wasm-sim smoketest-py32
-          - smoketest-esp smoketest-riscv smoketest-flags
-          - smoketest-examples smoketest-nxp smoketest-pwm-usb smoketest-avr
-          - smoketest-samd smoketest-stm32 smoketest-nrf smoketest-wasm
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v6
-        with:
-          submodules: true
-      - name: Install Go
-        uses: actions/setup-go@v6
-        with:
-          go-version: '1.27.0'
-          cache: true
-      - name: Download release artifact
-        uses: actions/download-artifact@v8
-        with:
-          name: tinygo${{ needs.build-linux.outputs.version }}.linux-amd64.tar.gz
-      - name: Extract release tarball
-        run: |
-          mkdir -p ~/lib
-          tar -C ~/lib -xf tinygo${{ needs.build-linux.outputs.version }}.linux-amd64.tar.gz
-          ln -s ~/lib/tinygo/bin/tinygo ~/go/bin/tinygo
-      - run: make testchdir ${{ matrix.group }}
+      - run: make smoketest
  assert-test-linux:
    # Run all tests that can run on Linux, with LLVM assertions enabled to catch
    # potential bugs.
@@ -232,10 +196,6 @@ jobs:
          cat /proc/cpuinfo
          sudo apt-get update
          sudo apt-get install --no-install-recommends \
-              libgcrypt20 \
-              libpixman-1-0 \
-              libsdl2-2.0-0 \
-              libslirp0 \
              qemu-system-arm \
              qemu-system-riscv32 \
              qemu-user \
@@ -244,31 +204,23 @@ jobs:
      - name: Install Go
        uses: actions/setup-go@v6
        with:
-          go-version: '1.27.0'
+          go-version: '1.26.4'
          cache: true
      - name: Install Node.js
        uses: actions/setup-node@v6
        with:
-          node-version: '22'
+          node-version: '18'
      - name: Install wasmtime
        uses: bytecodealliance/actions/wasmtime/setup@v1
        with:
          version: "29.0.1"
      - name: Setup `wasm-tools`
        uses: bytecodealliance/actions/wasm-tools/setup@v1
-      - name: Install Espressif QEMU
-        run: |
-          release=esp-develop-9.2.2-20260417
-          archive=qemu-xtensa-softmmu-${release//-/_}-x86_64-linux-gnu.tar.xz
-          curl -fL --retry 3 -o "$RUNNER_TEMP/$archive" \
-            "https://github.com/espressif/qemu/releases/download/$release/$archive"
-          tar -xJf "$RUNNER_TEMP/$archive" -C "$RUNNER_TEMP"
-          echo "$RUNNER_TEMP/qemu/bin" >> "$GITHUB_PATH"
      - name: Restore LLVM source cache
        uses: actions/cache/restore@v5
        id: cache-llvm-source
        with:
-          key: llvm-source-22-linux-asserts-v1
+          key: llvm-source-20-linux-asserts-v1
          path: |
            llvm-project/clang/lib/Headers
            llvm-project/clang/include
@@ -293,7 +245,7 @@ jobs:
        uses: actions/cache/restore@v5
        id: cache-llvm-build
        with:
-          key: llvm-build-22-linux-asserts-v1
+          key: llvm-build-20-linux-asserts-v1
          path: llvm-build
      - name: Build LLVM
        if: steps.cache-llvm-build.outputs.cache-hit != 'true'
@@ -329,7 +281,7 @@ jobs:
          echo "$(pwd)/build" >> $GITHUB_PATH
      - name: Test stdlib packages
        run: make tinygo-test
-      - run: make smoketest-quick
+      - run: make smoketest
      - run: make wasmtest
      - run: make tinygo-test-baremetal
      - name: Check Go code formatting
@@ -371,13 +323,13 @@ jobs:
      - name: Install Go
        uses: actions/setup-go@v6
        with:
-          go-version: '1.27.0'
+          go-version: '1.26.4'
          cache: true
      - name: Restore LLVM source cache
        uses: actions/cache/restore@v5
        id: cache-llvm-source
        with:
-          key: llvm-source-22-linux-v1
+          key: llvm-source-20-linux-v1
          path: |
            llvm-project/clang/lib/Headers
            llvm-project/clang/include
@@ -402,7 +354,7 @@ jobs:
        uses: actions/cache/restore@v5
        id: cache-llvm-build
        with:
-          key: llvm-build-22-linux-${{ matrix.goarch }}-v1
+          key: llvm-build-20-linux-${{ matrix.goarch }}-v1
          path: llvm-build
      - name: Build LLVM
        if: steps.cache-llvm-build.outputs.cache-hit != 'true'
@@ -426,7 +378,7 @@ jobs:
        uses: actions/cache@v5
        id: cache-binaryen
        with:
-          key: binaryen-linux-${{ matrix.goarch }}-v5
+          key: binaryen-linux-${{ matrix.goarch }}-v4
          path: build/wasm-opt
      - name: Build Binaryen
        if: steps.cache-binaryen.outputs.cache-hit != 'true'
@@ -29,7 +29,7 @@ jobs:
        uses: actions/cache/restore@v5
        id: cache-llvm-source
        with:
-          key: llvm-source-22-linux-nix-v1
+          key: llvm-source-20-linux-nix-v1
          path: |
            llvm-project/compiler-rt
      - name: Download LLVM source
@@ -1,158 +0,0 @@
-# Publish a GitHub release from the artifacts that CI already built.
-#
-# The Linux, macOS and Windows workflows build every file that a release needs
-# when the release branch is pushed. This workflow collects the artifacts of
-# those runs for the tagged commit, so what ships is what was tested.
-#
-# The release is a draft, so the notes can be reviewed before publication.
-name: Release
-
-on:
-  push:
-    tags:
-      - 'v*'
-  workflow_dispatch:
-    inputs:
-      tag:
-        description: 'Tag to release, for example v0.42.0'
-        required: true
-
-concurrency:
-  group: release-${{ inputs.tag || github.ref_name }}
-  cancel-in-progress: false
-
-permissions:
-  contents: write
-  actions: read
-
-jobs:
-  release:
-    runs-on: ubuntu-latest
-    env:
-      GH_TOKEN: ${{ github.token }}
-      GH_REPO: ${{ github.repository }}
-      TAG: ${{ inputs.tag || github.ref_name }}
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v6
-        with:
-          ref: ${{ inputs.tag || github.ref_name }}
-          fetch-depth: 0
-      - name: Read the version
-        id: version
-        # The release file names come from goenv/version.go, not from the tag,
-        # so the two must agree.
-        run: |
-          version=$(./.github/workflows/tinygo-extract-version.sh | cut -d= -f2-)
-          case "$version" in
-            *-dev)
-              echo "::error::goenv/version.go has development version $version"
-              exit 1
-              ;;
-          esac
-          if [ "v$version" != "$TAG" ]; then
-            echo "::error::tag $TAG does not match version $version in goenv/version.go"
-            exit 1
-          fi
-          echo "version=$version" >> "$GITHUB_OUTPUT"
-      - name: Wait for the CI runs of this commit
-        id: runs
-        # A pull request run has the merge commit as its head, so look at push
-        # runs only.
-        run: |
-          sha=$(git rev-parse HEAD)
-          for workflow in linux.yml build-macos.yml windows.yml; do
-            id=
-            for _ in $(seq 20); do
-              id=$(gh run list --workflow "$workflow" --commit "$sha" --event push --limit 1 --json databaseId --jq '.[0].databaseId')
-              if [ -n "$id" ]; then
-                break
-              fi
-              echo "waiting for $workflow to start on $sha"
-              sleep 30
-            done
-            if [ -z "$id" ]; then
-              echo "::error::no $workflow run for commit $sha"
-              exit 1
-            fi
-            echo "$workflow: run $id"
-            gh run watch "$id" --exit-status > /dev/null || true
-            conclusion=$(gh run view "$id" --json conclusion --jq .conclusion)
-            if [ "$conclusion" != "success" ]; then
-              echo "::error::$workflow run $id concluded with $conclusion"
-              exit 1
-            fi
-            case "$workflow" in
-              linux.yml)       echo "linux=$id"   >> "$GITHUB_OUTPUT" ;;
-              build-macos.yml) echo "macos=$id"   >> "$GITHUB_OUTPUT" ;;
-              windows.yml)     echo "windows=$id" >> "$GITHUB_OUTPUT" ;;
-            esac
-          done
-      # The build jobs upload with `archive: false`, so the artifact is the
-      # release file itself. skip-decompress keeps it that way. The Windows
-      # release is a .zip, which a download would otherwise unpack.
-      - name: Download the Linux artifacts
-        uses: actions/download-artifact@v8
-        with:
-          run-id: ${{ steps.runs.outputs.linux }}
-          github-token: ${{ github.token }}
-          path: artifacts
-          skip-decompress: true
-      - name: Download the macOS artifacts
-        uses: actions/download-artifact@v8
-        with:
-          run-id: ${{ steps.runs.outputs.macos }}
-          github-token: ${{ github.token }}
-          path: artifacts
-          skip-decompress: true
-      - name: Download the Windows artifacts
-        uses: actions/download-artifact@v8
-        with:
-          run-id: ${{ steps.runs.outputs.windows }}
-          github-token: ${{ github.token }}
-          path: artifacts
-          skip-decompress: true
-      - name: Collect the release files
-        # A build that stopped uploading must not give a half complete release,
-        # so list the files that are expected. The search is by file name, not
-        # by artifact name, because the artifact names are not uniform.
-        env:
-          VERSION: ${{ steps.version.outputs.version }}
-        run: |
-          version=$VERSION
-          mkdir -p dist
-          missing=0
-          for file in \
-              "tinygo$version.linux-amd64.tar.gz"  "tinygo_${version}_amd64.deb" \
-              "tinygo$version.linux-arm.tar.gz"    "tinygo_${version}_armhf.deb" \
-              "tinygo$version.linux-arm64.tar.gz"  "tinygo_${version}_arm64.deb" \
-              "tinygo$version.darwin-amd64.tar.gz" \
-              "tinygo$version.darwin-arm64.tar.gz" \
-              "tinygo$version.windows-amd64.zip"; do
-            found=$(find artifacts -type f -name "$file" | head -1)
-            if [ -z "$found" ]; then
-              echo "::error::missing release file $file"
-              missing=1
-            else
-              mv "$found" "dist/$file"
-            fi
-          done
-          ls -l dist
-          exit $missing
-      - name: Extract the release notes
-        env:
-          VERSION: ${{ steps.version.outputs.version }}
-        run: ./.github/workflows/extract-changelog.sh "$VERSION" > notes.md
-      - name: Create the draft release
-        env:
-          VERSION: ${{ steps.version.outputs.version }}
-        run: |
-          version=$VERSION
-          set --
-          case "$version" in
-            *-*) set -- --prerelease ;;
-          esac
-          gh release create "$TAG" --draft --verify-tag "$@" \
-            --title "$version" \
-            --notes-file notes.md \
-            dist/*
@@ -19,10 +19,6 @@ jobs:
      - name: Add GOBIN to $PATH
        run: |
          echo "$HOME/go/bin" >> $GITHUB_PATH
-      - name: Install Go
-        uses: actions/setup-go@v6
-        with:
-          go-version: '~1.25'
      - name: Checkout
        uses: actions/checkout@v6
        with:
@@ -34,7 +30,7 @@ jobs:
        uses: actions/cache@v5
        id: cache-llvm-source
        with:
-          key: llvm-source-22-sizediff-v1
+          key: llvm-source-20-sizediff-v1
          path: |
            llvm-project/compiler-rt
      - name: Download LLVM source
@@ -34,13 +34,13 @@ jobs:
      - name: Install Go
        uses: actions/setup-go@v6
        with:
-          go-version: '1.27.0'
+          go-version: '1.26.4'
          cache: true
      - name: Restore cached LLVM source
        uses: actions/cache/restore@v5
        id: cache-llvm-source
        with:
-          key: llvm-source-22-windows-v3
+          key: llvm-source-20-windows-v3
          path: |
            llvm-project/clang/lib/Headers
            llvm-project/clang/include
@@ -65,7 +65,7 @@ jobs:
        uses: actions/cache/restore@v5
        id: cache-llvm-build
        with:
-          key: llvm-build-22-windows-v1
+          key: llvm-build-20-windows-v4
          path: llvm-build
      - name: Build LLVM
        if: steps.cache-llvm-build.outputs.cache-hit != 'true'
@@ -129,7 +129,7 @@ jobs:
      - name: Install Go
        uses: actions/setup-go@v6
        with:
-          go-version: '1.27.0'
+          go-version: '1.26.4'
          cache: true
      - name: Download TinyGo build
        uses: actions/download-artifact@v8
@@ -139,7 +139,7 @@ jobs:
        # This build is already unzipped.
      - name: Smoke tests
        shell: bash
-        run: make smoketest-quick TINYGO=$(PWD)/build/tinygo/bin/tinygo
+        run: make smoketest TINYGO=$(PWD)/build/tinygo/bin/tinygo

  stdlib-test-windows:
    runs-on: windows-2022
@@ -150,7 +150,7 @@ jobs:
      - name: Install Go
        uses: actions/setup-go@v6
        with:
-          go-version: '1.27.0'
+          go-version: '1.26.4'
          cache: true
      - name: Download TinyGo build
        uses: actions/download-artifact@v8
@@ -176,7 +176,7 @@ jobs:
      - name: Install Go
        uses: actions/setup-go@v6
        with:
-          go-version: '1.27.0'
+          go-version: '1.26.4'
          cache: true
      - name: Download TinyGo build
        uses: actions/download-artifact@v8
@@ -24,8 +24,6 @@ src/device/renesas/*.go
 src/device/renesas/*.s
 src/device/rp/*.go
 src/device/rp/*.s
-src/device/py32/*.go
-src/device/py32/*.s
 ./vendor
 llvm-build
 llvm-project
@@ -41,6 +41,3 @@
 [submodule "lib/bdwgc"]
 	path = lib/bdwgc
 	url = https://github.com/ivmai/bdwgc.git
-[submodule "lib/py32-svd"]
-	path = lib/py32-svd
-	url = https://github.com/tinygo-org/py32-svd.git
@@ -1,10 +0,0 @@
-## Communication style
-Use ASD-STE-100 Simplified Technical English when you speak to the operator.
-
-## Comments
-Use ASD-STE100 Simplified Technical English for content outside of the code like comments, PR description, PR title, github comments, and issues.
-
-Generally omit extra redundant comments. If a comment is absolutely needed, always keep it brief, no more than 2 lines. Avoid extra use of colons, semicolons, and dashes. When comments are required due to some specific requirements, include a reference such as to a datasheet or other definitive source to explain why this is the case, including the chapter/section number, page number, and/or URL.
-
-## No coding tool attributions
-Never add "created by XXX" or any other attributions from coding tools to any PRs, issues, comments, or anywhere else.
@@ -30,10 +30,7 @@ on a different system like Mac.

 ## Using GNU Make

-The static build of TinyGo is driven by GNUmakefile, which includes the topic
-files in the `make/` directory (`config.mk`, `llvm.mk`, `gen-device.mk`,
-`build.mk`, `test.mk`, `smoketest.mk`, `release.mk`, and `tools.mk`).
-It provides a help target for quick reference:
+The static build of TinyGo is driven by GNUmakefile, which provides a help target for quick reference:

    % make help
    clean                           Remove build directory
@@ -67,7 +64,7 @@ while producing binaries that are about as fast.
    export CC=clang
    export CXX=clang++

-`make/config.mk` holds a default configuration that is good for most users. It
+The Makefile includes a default configuration that is good for most users. It
 builds a release version of LLVM (optimized, no asserts) and includes all
 targets supported by TinyGo:

@@ -119,35 +116,3 @@ the following command (for example in ~/lib):
 TinyGo will get extracted to a `tinygo` directory. You can then call it with:

    ./tinygo/bin/tinygo
-
-## Publish a release
-
-The `Release` workflow (`.github/workflows/release.yml`) publishes releases. It
-does not build anything. The Linux, macOS and Windows workflows already build
-every file that a release needs when the `release` branch is pushed, so the
-release workflow collects the artifacts of those runs for the tagged commit.
-What ships is what was tested.
-
- 1. On the `dev` branch, set `const version` in `goenv/version.go` to the new
-    version (without a `v` prefix), and add the entry to `CHANGELOG.md`.
- 2. Merge `dev` into the `release` branch.
- 3. Tag that commit and push the tag:
-
-        git tag v0.42.0
-        git push origin v0.42.0
-
-    The tag must be `v` plus the version in `goenv/version.go`, because the
-    release file names come from that constant.
- 4. The workflow waits for the Linux, macOS and Windows runs of the tagged
-    commit, collects their nine files, and creates a **draft** release. The
-    release notes come from the `CHANGELOG.md` entry for that version.
- 5. Review the draft release and publish it.
- 6. On the `dev` branch, set `goenv/version.go` to the next `-dev` version.
-
-To release again after a failure, delete the draft release and start the
-workflow from the Actions tab with the tag as its input.
-
-GitHub keeps a SHA-256 digest of every published file. The digest is not shown
-on the release page, but it can be printed with:
-
-    gh release view v0.42.0 --json assets --jq '.assets[] | "\(.digest)  \(.name)"'
@@ -1,5 +1,5 @@
 # tinygo-llvm stage obtains the llvm source for TinyGo
-FROM golang:1.27 AS tinygo-llvm
+FROM golang:1.26 AS tinygo-llvm

 RUN apt-get update && \
    apt-get install -y apt-utils make cmake clang-17 ninja-build && \
@@ -10,7 +10,6 @@ RUN apt-get update && \
        /tmp/*

 COPY ./GNUmakefile /tinygo/GNUmakefile
-COPY ./make /tinygo/make

 RUN cd /tinygo/ && \
    make llvm-source
@@ -34,7 +33,7 @@ RUN cd /tinygo/ && \

 # tinygo-compiler copies the compiler build over to a base Go container (without
 # all the build tools etc).
-FROM golang:1.27 AS tinygo-compiler
+FROM golang:1.26 AS tinygo-compiler

 # Copy tinygo build.
 COPY --from=tinygo-compiler-build /tinygo/build/release/tinygo /tinygo
@@ -14,7 +14,6 @@ import (
 	"fmt"
 	"go/types"
 	"hash/crc32"
-	"maps"
 	"math/bits"
 	"os"
 	"os/exec"
@@ -24,7 +23,6 @@ import (
 	"sort"
 	"strconv"
 	"strings"
-	"sync"

 	"github.com/gofrs/flock"
 	"github.com/tinygo-org/tinygo/compileopts"
@@ -139,7 +137,9 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
 		if _, ok := globalValues[pkgPath]; !ok {
 			globalValues[pkgPath] = map[string]string{}
 		}
-		maps.Copy(globalValues[pkgPath], vals)
+		for k, v := range vals {
+			globalValues[pkgPath][k] = v
+		}
 	}

 	// Check for a libc dependency.
@@ -270,7 +270,6 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
 	// Create the *ssa.Program. This does not yet build the entire SSA of the
 	// program so it's pretty fast and doesn't need to be parallelized.
 	program := lprogram.LoadSSA()
-	buildProgram := sync.OnceFunc(program.Build)

 	// Add jobs to compile each package.
 	// Packages that have a cache hit will not be compiled again.
@@ -279,6 +278,7 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe

 	var embedFileObjects []*compileJob
 	for _, pkg := range lprogram.Sorted() {
+		pkg := pkg // necessary to avoid a race condition

 		var undefinedGlobals []string
 		for name := range globalValues[pkg.Pkg.Path()] {
@@ -400,13 +400,8 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
 					return nil
 				}

-				// SSA package builds may run concurrently, but the resulting
-				// functions cannot be inspected until all builds have finished:
-				// generic instances and wrappers can be shared across packages.
-				// Build the whole program once before compiling any package.
-				buildProgram()
-
-				// Compile AST to IR.
+				// Compile AST to IR. The compiler.CompilePackage function will
+				// build the SSA as needed.
 				mod, errs := compiler.CompilePackage(pkg.ImportPath, pkg, program.Package(pkg.Pkg), machine, compilerConfig, config.DumpSSA())
 				defer mod.Context().Dispose()
 				defer mod.Dispose()
@@ -780,6 +775,7 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
 	// TODO: do this as part of building the package to be able to link the
 	// bitcode files together.
 	for _, pkg := range lprogram.Sorted() {
+		pkg := pkg
 		for _, filename := range pkg.CFiles {
 			abspath := filepath.Join(pkg.OriginalDir(), filename)
 			job := &compileJob{
@@ -846,25 +842,22 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
 			}
 			ldflags = append(ldflags, "-mllvm", "-mcpu="+config.CPU())
 			ldflags = append(ldflags, "-mllvm", "-mattr="+config.Features()) // needed for MIPS softfloat
-			switch config.LinkerFlavor() {
-			case "coff":
-				// Options for driving ld.lld in PE/COFF mode.
+			if config.GOOS() == "windows" {
+				// Options for the MinGW wrapper for the lld COFF linker.
 				ldflags = append(ldflags,
 					"-Xlink=/opt:lldlto="+strconv.Itoa(speedLevel),
 					"--thinlto-cache-dir="+filepath.Join(cacheDir, "thinlto"))
-			case "darwin":
+			} else if config.GOOS() == "darwin" {
 				// Options for the ld64-compatible lld linker.
 				ldflags = append(ldflags,
 					"--lto-O"+strconv.Itoa(speedLevel),
 					"-cache_path_lto", filepath.Join(cacheDir, "thinlto"))
-			case "gnu":
+			} else {
 				// Options for the ELF linker.
 				ldflags = append(ldflags,
 					"--lto-O"+strconv.Itoa(speedLevel),
 					"--thinlto-cache-dir="+filepath.Join(cacheDir, "thinlto"),
 				)
-			default:
-				return fmt.Errorf("unknown linker flavor: %s", config.LinkerFlavor())
 			}
 			if config.CodeModel() != "default" {
 				ldflags = append(ldflags,
@@ -921,7 +914,7 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
 			}

 			// Run wasm-opt for wasm binaries
-			if arch, _, _ := strings.Cut(config.Triple(), "-"); arch == "wasm32" {
+			if arch := strings.Split(config.Triple(), "-")[0]; arch == "wasm32" {
 				optLevel, _, _ := config.OptLevel()
 				opt := "-" + optLevel

@@ -5,7 +5,6 @@ import (
 	"os"
 	"path/filepath"
 	"runtime"
-	"strings"
 	"testing"

 	"github.com/tinygo-org/tinygo/compileopts"
@@ -37,7 +36,6 @@ func TestClangAttributes(t *testing.T) {
 		"nintendoswitch",
 		"riscv-qemu",
 		"tkey",
-		"uefi-amd64",
 		"wasip1",
 		"wasip2",
 		"wasm",
@@ -49,6 +47,7 @@ func TestClangAttributes(t *testing.T) {
 		targetNames = append(targetNames, "esp32", "esp8266")
 	}
 	for _, targetName := range targetNames {
+		targetName := targetName
 		t.Run(targetName, func(t *testing.T) {
 			testClangAttributes(t, &compileopts.Options{Target: targetName})
 		})
@@ -130,10 +129,8 @@ func testClangAttributes(t *testing.T, options *compileopts.Options) {
 	defer mod.Dispose()

 	// Check whether the LLVM target matches.
-	// Use ClangTriple since LLVM 22 normalizes wasm32-unknown-wasi to wasip1.
-	expectedTriple := compileopts.ClangTriple(config.Triple())
-	if mod.Target() != expectedTriple {
-		t.Errorf("target has LLVM triple %#v but Clang makes it LLVM triple %#v", expectedTriple, mod.Target())
+	if mod.Target() != config.Triple() {
+		t.Errorf("target has LLVM triple %#v but Clang makes it LLVM triple %#v", config.Triple(), mod.Target())
 	}

 	// Check the "target-cpu" and "target-features" string attribute of the add
@@ -157,65 +154,11 @@ func testClangAttributes(t *testing.T, options *compileopts.Options) {
 			// The reason is that Debian has patched Clang in a way that
 			// modifies the LLVM features string, changing lots of FPU/float
 			// related flags. We want to test vanilla Clang, not Debian Clang.
-			//
-			// Rather than requiring an exact match (which breaks across LLVM
-			// versions as new features are added), check that every feature
-			// TinyGo specifies is consistent with what Clang produces:
-			//  - A "+feature" in TinyGo must appear in Clang's output.
-			//  - A "-feature" in TinyGo must not be "+feature" in Clang's output.
-			checkFeatureFlags(t, config.Features(), features)
+			t.Errorf("target has LLVM features\n\t%#v\nbut Clang makes it\n\t%#v", config.Features(), features)
 		}
 	}
 }

-// checkFeatureFlags verifies that all features specified by TinyGo's target
-// configuration are consistent with Clang's output. This allows Clang to add
-// new features across LLVM versions without breaking the test.
-func checkFeatureFlags(t *testing.T, targetFeatures, clangFeatures string) {
-	t.Helper()
-
-	// Build a set of Clang's features for fast lookup.
-	clangSet := make(map[string]bool) // feature name -> enabled
-	for _, f := range strings.Split(clangFeatures, ",") {
-		f = strings.TrimSpace(f)
-		if len(f) < 2 {
-			continue
-		}
-		enabled := f[0] == '+'
-		name := f[1:]
-		clangSet[name] = enabled
-	}
-
-	// Check each feature that TinyGo specifies.
-	var missing, conflicts []string
-	for _, f := range strings.Split(targetFeatures, ",") {
-		f = strings.TrimSpace(f)
-		if len(f) < 2 {
-			continue
-		}
-		wantEnabled := f[0] == '+'
-		name := f[1:]
-
-		clangEnabled, inClang := clangSet[name]
-		if wantEnabled && (!inClang || !clangEnabled) {
-			// TinyGo requires +feature but Clang doesn't enable it.
-			missing = append(missing, f)
-		} else if !wantEnabled && inClang && clangEnabled {
-			// TinyGo requires -feature but Clang enables it.
-			conflicts = append(conflicts, fmt.Sprintf("target has %q but Clang has %q", f, "+"+name))
-		}
-	}
-
-	if len(missing) > 0 {
-		t.Errorf("target specifies features not present in Clang output: %s\n\ttarget features: %s\n\tclang features:  %s",
-			strings.Join(missing, ", "), targetFeatures, clangFeatures)
-	}
-	if len(conflicts) > 0 {
-		t.Errorf("target disables features that Clang enables: %s",
-			strings.Join(conflicts, "; "))
-	}
-}
-
 // This TestMain is necessary because TinyGo may also be invoked to run certain
 // LLVM tools in a separate process. Not capturing these invocations would lead
 // to recursive tests.
@@ -204,18 +204,7 @@ var avrBuiltins = []string{

 // Builtins needed specifically for windows/386.
 var windowsI386Builtins = []string{
-	"i386/chkstk.S",  // __chkstk_ms
-	"i386/chkstk2.S", // _alloca (__alloca)
-}
-
-// Builtins needed specifically for windows/amd64.
-var windowsAMD64Builtins = []string{
-	"x86_64/chkstk.S",
-}
-
-// Builtins needed specifically for windows/arm64.
-var windowsARM64Builtins = []string{
-	"aarch64/chkstk.S",
+	"i386/chkstk.S", // also _alloca
 }

 // libCompilerRT is a library with symbols required by programs compiled with
@@ -244,28 +233,13 @@ var libCompilerRT = Library{
 			builtins = append(builtins, aeabiBuiltins...)
 		case "avr":
 			builtins = append(builtins, avrBuiltins...)
-		case "x86_64":
-			builtins = append(builtins, genericBuiltins128...)
-			if isWindowsTriple(target) {
-				builtins = append(builtins, windowsAMD64Builtins...)
-			}
-		case "aarch64":
-			builtins = append(builtins, genericBuiltins128...)
-			if isWindowsTriple(target) {
-				builtins = append(builtins, windowsARM64Builtins...)
-			}
-		case "riscv64":
+		case "x86_64", "aarch64", "riscv64": // any 64-bit arch
 			builtins = append(builtins, genericBuiltins128...)
 		case "i386":
-			if isWindowsTriple(target) {
+			if strings.Split(target, "-")[2] == "windows" {
 				builtins = append(builtins, windowsI386Builtins...)
 			}
 		}
 		return builtins, nil
 	},
 }
-
-func isWindowsTriple(target string) bool {
-	parts := strings.Split(target, "-")
-	return len(parts) > 2 && parts[2] == "windows"
-}
@@ -281,7 +281,7 @@ func parseDepFile(s string) ([]string, error) {
 	s = strings.ReplaceAll(s, "\\\n", " ")

 	// Only use the first line, which is expected to begin with "deps:".
-	line, _, _ := strings.Cut(s, "\n")
+	line := strings.SplitN(s, "\n", 2)[0]
 	if !strings.HasPrefix(line, "deps:") {
 		return nil, errors.New("readDepFile: expected 'deps:' prefix")
 	}
@@ -23,7 +23,7 @@
 #include "clang/Basic/Diagnostic.h"
 #include "clang/Basic/DiagnosticOptions.h"
 #include "clang/Driver/DriverDiagnostic.h"
-#include "clang/Options/Options.h"
+#include "clang/Driver/Options.h"
 #include "clang/Frontend/FrontendDiagnostic.h"
 #include "clang/Frontend/TextDiagnosticPrinter.h"
 #include "clang/Frontend/Utils.h"
@@ -35,7 +35,6 @@
 #include "llvm/MC/MCAsmInfo.h"
 #include "llvm/MC/MCCodeEmitter.h"
 #include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCInstPrinter.h"
 #include "llvm/MC/MCInstrInfo.h"
 #include "llvm/MC/MCObjectFileInfo.h"
 #include "llvm/MC/MCObjectWriter.h"
@@ -68,7 +67,8 @@
 #include <optional>
 #include <system_error>
 using namespace clang;
-using namespace clang::options;
+using namespace clang::driver;
+using namespace clang::driver::options;
 using namespace llvm;
 using namespace llvm::opt;

@@ -109,7 +109,7 @@ bool AssemblerInvocation::CreateFromArgs(AssemblerInvocation &Opts,
  // Construct the invocation.

  // Target Options
-  Opts.Triple = llvm::Triple(llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)));
+  Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
  if (Arg *A = Args.getLastArg(options::OPT_darwin_target_variant_triple))
    Opts.DarwinTargetVariantTriple = llvm::Triple(A->getValue());
  if (Arg *A = Args.getLastArg(OPT_darwin_target_variant_sdk_version_EQ)) {
@@ -125,8 +125,8 @@ bool AssemblerInvocation::CreateFromArgs(AssemblerInvocation &Opts,
  Opts.Features = Args.getAllArgValues(OPT_target_feature);

  // Use the default target triple if unspecified.
-  if (Opts.Triple.getTriple().empty())
-    Opts.Triple = llvm::Triple(llvm::sys::getDefaultTargetTriple());
+  if (Opts.Triple.empty())
+    Opts.Triple = llvm::sys::getDefaultTargetTriple();

  // Language Options
  Opts.IncludePaths = Args.getAllArgValues(OPT_I);
@@ -267,7 +267,7 @@ static bool ExecuteAssemblerImpl(AssemblerInvocation &Opts,
  std::string Error;
  const Target *TheTarget = TargetRegistry::lookupTarget(Opts.Triple, Error);
  if (!TheTarget)
-    return Diags.Report(diag::err_target_unknown_triple) << Opts.Triple.str();
+    return Diags.Report(diag::err_target_unknown_triple) << Opts.Triple;

  ErrorOr<std::unique_ptr<MemoryBuffer>> Buffer =
      MemoryBuffer::getFileOrSTDIN(Opts.InputFile, /*IsText=*/true);
@@ -327,7 +327,7 @@ static bool ExecuteAssemblerImpl(AssemblerInvocation &Opts,
      TheTarget->createMCSubtargetInfo(Opts.Triple, Opts.CPU, FS));
  assert(STI && "Unable to create subtarget info!");

-  MCContext Ctx(Opts.Triple, MAI.get(), MRI.get(), STI.get(), &SrcMgr,
+  MCContext Ctx(Triple(Opts.Triple), MAI.get(), MRI.get(), STI.get(), &SrcMgr,
                &MCOptions);

  bool PIC = false;
@@ -390,8 +390,8 @@ static bool ExecuteAssemblerImpl(AssemblerInvocation &Opts,

  // FIXME: There is a bit of code duplication with addPassesToEmitFile.
  if (Opts.OutputType == AssemblerInvocation::FT_Asm) {
-    std::unique_ptr<MCInstPrinter> IP(TheTarget->createMCInstPrinter(
-        Opts.Triple, Opts.OutputAsmVariant, *MAI, *MCII, *MRI));
+    MCInstPrinter *IP = TheTarget->createMCInstPrinter(
+        llvm::Triple(Opts.Triple), Opts.OutputAsmVariant, *MAI, *MCII, *MRI);

    std::unique_ptr<MCCodeEmitter> CE;
    if (Opts.ShowEncoding)
@@ -400,7 +400,7 @@ static bool ExecuteAssemblerImpl(AssemblerInvocation &Opts,
        TheTarget->createMCAsmBackend(*STI, *MRI, MCOptions));

    auto FOut = std::make_unique<formatted_raw_ostream>(*Out);
-    Str.reset(TheTarget->createAsmStreamer(Ctx, std::move(FOut), std::move(IP),
+    Str.reset(TheTarget->createAsmStreamer(Ctx, std::move(FOut), IP,
                                           std::move(CE), std::move(MAB)));
  } else if (Opts.OutputType == AssemblerInvocation::FT_Null) {
    Str.reset(createNullStreamer(Ctx));
@@ -422,7 +422,7 @@ static bool ExecuteAssemblerImpl(AssemblerInvocation &Opts,
        DwoOS ? MAB->createDwoObjectWriter(*Out, *DwoOS)
              : MAB->createObjectWriter(*Out);

-    Triple T = Opts.Triple;
+    Triple T(Opts.Triple);
    Str.reset(TheTarget->createMCObjectStreamer(
        T, Ctx, std::move(MAB), std::move(OW), std::move(CE), *STI));
    Str.get()->initSections(Opts.NoExecStack, *STI);
@@ -453,7 +453,7 @@ static bool ExecuteAssemblerImpl(AssemblerInvocation &Opts,
  std::unique_ptr<MCTargetAsmParser> TAP(
      TheTarget->createMCAsmParser(*STI, *Parser, *MCII, MCOptions));
  if (!TAP)
-    Failed = Diags.Report(diag::err_target_unknown_triple) << Opts.Triple.str();
+    Failed = Diags.Report(diag::err_target_unknown_triple) << Opts.Triple;

  // Set values for symbols, if any.
  for (auto &S : Opts.SymbolDefs) {
@@ -506,12 +506,12 @@ int cc1as_main(ArrayRef<const char *> Argv, const char *Argv0, void *MainAddr) {
  InitializeAllAsmParsers();

  // Construct our diagnostic client.
-  DiagnosticOptions DiagOpts;
+  IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions();
  TextDiagnosticPrinter *DiagClient
-    = new TextDiagnosticPrinter(errs(), DiagOpts);
+    = new TextDiagnosticPrinter(errs(), &*DiagOpts);
  DiagClient->setPrefix("clang -cc1as");
  IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
-  DiagnosticsEngine Diags(DiagID, DiagOpts, DiagClient);
+  DiagnosticsEngine Diags(DiagID, &*DiagOpts, DiagClient);

  // Set an error handler, so that any LLVM backend diagnostics go through our
  // error handler.
@@ -528,7 +528,7 @@ int cc1as_main(ArrayRef<const char *> Argv, const char *Argv0, void *MainAddr) {
        llvm::outs(), "clang -cc1as [options] file...",
        "Clang Integrated Assembler", /*ShowHidden=*/false,
        /*ShowAllAliases=*/false,
-        llvm::opt::Visibility(clang::options::CC1AsOption));
+        llvm::opt::Visibility(driver::options::CC1AsOption));

    return 0;
  }
@@ -20,7 +20,7 @@ struct AssemblerInvocation {
  /// @{

  /// The name of the target triple to assemble for.
-  llvm::Triple Triple;
+  std::string Triple;

  /// If given, the name of the target CPU to determine which instructions
  /// are legal.
@@ -142,7 +142,7 @@ struct AssemblerInvocation {

 public:
  AssemblerInvocation() {
-    Triple = llvm::Triple();
+    Triple = "";
    NoInitialTextSection = 0;
    InputFile = "-";
    OutputPath = "-";
@@ -27,9 +27,9 @@ bool tinygo_clang_driver(int argc, char **argv) {
 	std::vector<const char*> args(argv, argv + argc);

 	// The compiler invocation needs a DiagnosticsEngine so it can report problems
-	clang::DiagnosticOptions DiagOpts;
-	clang::TextDiagnosticPrinter DiagnosticPrinter(llvm::errs(), DiagOpts);
-	clang::DiagnosticsEngine Diags(llvm::IntrusiveRefCntPtr<clang::DiagnosticIDs>(new clang::DiagnosticIDs()), DiagOpts, &DiagnosticPrinter, false);
+	llvm::IntrusiveRefCntPtr<clang::DiagnosticOptions> DiagOpts = new clang::DiagnosticOptions();
+	clang::TextDiagnosticPrinter DiagnosticPrinter(llvm::errs(), &*DiagOpts);
+	clang::DiagnosticsEngine Diags(llvm::IntrusiveRefCntPtr<clang::DiagnosticIDs>(new clang::DiagnosticIDs()), &*DiagOpts, &DiagnosticPrinter, false);

 	// Create the clang driver
 	clang::driver::Driver TheDriver(args[0], llvm::sys::getDefaultTargetTriple(), Diags);
@@ -60,7 +60,7 @@ bool tinygo_clang_driver(int argc, char **argv) {
 			}

 			// Create the actual diagnostics engine.
-			Clang->createDiagnostics();
+			Clang->createDiagnostics(*llvm::vfs::getRealFileSystem());
 			if (!Clang->hasDiagnostics()) {
 				return false;
 			}
@@ -17,7 +17,7 @@ import (
 var commands = map[string][]string{}

 func init() {
-	llvmMajor, _, _ := strings.Cut(llvm.Version, ".")
+	llvmMajor := strings.Split(llvm.Version, ".")[0]
 	commands["clang"] = []string{"clang-" + llvmMajor}
 	commands["ld.lld"] = []string{"ld.lld-" + llvmMajor, "ld.lld"}
 	commands["wasm-ld"] = []string{"wasm-ld-" + llvmMajor, "wasm-ld"}
@@ -25,8 +25,8 @@ func NewConfig(options *compileopts.Options) (*compileopts.Config, error) {
 	}

 	// Version range supported by TinyGo.
-	const minorMin = 25 // when updating the min version, also update .github/workflows/compat.yml
-	const minorMax = 27
+	const minorMin = 24 // when updating the min version, also update .github/workflows/compat.yml
+	const minorMax = 26

 	// Check that we support this Go toolchain version.
 	gorootMajor, gorootMinor, err := goenv.GetGorootVersion()
@@ -15,7 +15,7 @@ func makeDarwinLibSystemJob(config *compileopts.Config, tmpdir string) *compileJ
 	return &compileJob{
 		description: "compile Darwin libSystem.dylib",
 		run: func(job *compileJob) (err error) {
-			arch, _, _ := strings.Cut(config.Triple(), "-")
+			arch := strings.Split(config.Triple(), "-")[0]
 			job.result = filepath.Join(tmpdir, "libSystem.dylib")
 			objpath := filepath.Join(tmpdir, "libSystem.o")
 			inpath := filepath.Join(goenv.Get("TINYGOROOT"), "lib/macos-minimal-sdk/src", arch, "libSystem.s")
@@ -65,6 +65,15 @@ func makeESPFirmwareImage(infile, outfile, format string) error {
 	// Sort the segments by address. This is what esptool does too.
 	sort.SliceStable(segments, func(i, j int) bool { return segments[i].addr < segments[j].addr })

+	// Calculate checksum over the segment data. This is used in the image
+	// footer.
+	checksum := uint8(0xef)
+	for _, segment := range segments {
+		for _, b := range segment.data {
+			checksum ^= b
+		}
+	}
+
 	// Write first to an in-memory buffer, primarily so that we can easily
 	// calculate a hash over the entire image.
 	// An added benefit is that we don't need to check for errors all the time.
@@ -79,83 +88,6 @@ func makeESPFirmwareImage(infile, outfile, format string) error {
 		chip = format[:len(format)-len("-img")]
 	}

-	// For ESP32 (original): separate RAM segments (loadable by ROM bootloader)
-	// from flash-mapped segments (DROM/IROM, require MMU setup by startup code).
-	// The ROM bootloader on ESP32 does NOT handle flash-mapped segments —
-	// it tries to memcpy to the virtual address, which crashes.
-	var flashSegments []*espImageSegment
-	if chip == "esp32" {
-		var ramSegments []*espImageSegment
-		for _, seg := range segments {
-			if (seg.addr >= 0x3F400000 && seg.addr < 0x3F800000) || // DROM
-				(seg.addr >= 0x400D0000 && seg.addr < 0x40400000) { // IROM
-				flashSegments = append(flashSegments, seg)
-			} else {
-				ramSegments = append(ramSegments, seg)
-			}
-		}
-		segments = ramSegments
-	}
-
-	// ESP32 flash XIP: compute where the DROM segment will be placed in flash
-	// (page-aligned, right after the RAM segments) and patch the
-	// _drom_flash_addr variable so the startup code can program the cache MMU.
-	// This must happen before the checksum/hash are computed so the patched
-	// value is covered by both.
-	const esp32FlashBase = 0x1000 // esptool flashes the image at 0x1000
-	// The ESP32 flash cache MMU supports configurable page sizes down to 256 B. 64 KiB is the reset/default size.
-	// If the startup code ever changes the MMU page size, this constant must change too.
-	const esp32PageSize = 0x10000 // 64KB MMU pages
-	var esp32DromFlashAddr uint32
-	if chip == "esp32" && len(flashSegments) > 0 {
-		// Compute the size of the RAM portion of the image (everything the ROM
-		// bootloader loads, up to and including the appended SHA256 hash).
-		ramImageSize := 0
-		ramImageSize += 24 // image header (8) + trailer fields (16)
-		for _, seg := range segments {
-			ramImageSize += 8 + len(seg.data) // segment header + data (4-aligned)
-		}
-		ramImageSize += 16 - ramImageSize%16 // footer padding + checksum byte
-		ramImageSize += 32                   // appended SHA256 hash
-
-		// DROM flash address must be 64KB page-aligned.
-		esp32DromFlashAddr = uint32(esp32FlashBase+ramImageSize+esp32PageSize-1) &^ (esp32PageSize - 1)
-
-		// Patch _drom_flash_addr in whichever RAM segment contains it.
-		syms, _ := inf.Symbols()
-		var dromSymAddr uint64
-		for _, s := range syms {
-			if s.Name == "_drom_flash_addr" {
-				dromSymAddr = s.Value
-				break
-			}
-		}
-		if dromSymAddr == 0 {
-			return fmt.Errorf("ESP32: _drom_flash_addr symbol not found")
-		}
-		patched := false
-		for _, seg := range segments {
-			if dromSymAddr >= uint64(seg.addr) && dromSymAddr+4 <= uint64(seg.addr)+uint64(len(seg.data)) {
-				off := int(dromSymAddr - uint64(seg.addr))
-				binary.LittleEndian.PutUint32(seg.data[off:], esp32DromFlashAddr)
-				patched = true
-				break
-			}
-		}
-		if !patched {
-			return fmt.Errorf("ESP32: _drom_flash_addr (0x%x) not in any RAM segment", dromSymAddr)
-		}
-	}
-
-	// Calculate checksum over the segment data. This is used in the image
-	// footer.
-	checksum := uint8(0xef)
-	for _, segment := range segments {
-		for _, b := range segment.data {
-			checksum ^= b
-		}
-	}
-
 	if makeImage {
 		// The bootloader starts at 0x1000, or 4096.
 		// TinyGo doesn't use a separate bootloader and runs the entire
@@ -259,64 +191,6 @@ func makeESPFirmwareImage(infile, outfile, format string) error {
 		outf.Write(hash[:])
 	}

-	// For ESP32: append flash-mapped segments (DROM/IROM) at page-aligned flash
-	// offsets after the RAM portion. The startup code maps them via the flash
-	// cache MMU (DROM at esp32DromFlashAddr, patched into _drom_flash_addr).
-	if len(flashSegments) > 0 {
-		const flashBase = esp32FlashBase
-		const pageSize = esp32PageSize
-		dromFlashAddr := esp32DromFlashAddr
-
-		// Separate DROM and IROM segments.
-		var dromSegs, iromSegs []*espImageSegment
-		for _, seg := range flashSegments {
-			if seg.addr >= 0x3F400000 && seg.addr < 0x3F800000 {
-				dromSegs = append(dromSegs, seg)
-			} else {
-				iromSegs = append(iromSegs, seg)
-			}
-		}
-
-		// Write DROM segments at the computed page-aligned flash offset.
-		dromSize := 0
-		if len(dromSegs) > 0 {
-			targetImageOffset := int(dromFlashAddr - flashBase)
-			if makeImage {
-				targetImageOffset = int(dromFlashAddr)
-			}
-			if outf.Len() > targetImageOffset {
-				return fmt.Errorf("ESP32: RAM segments too large (%d bytes), overlap DROM at flash 0x%x", outf.Len(), dromFlashAddr)
-			}
-			outf.Write(make([]byte, targetImageOffset-outf.Len()))
-			for _, seg := range dromSegs {
-				outf.Write(seg.data)
-				dromSize += len(seg.data)
-			}
-		}
-
-		// Write IROM segments immediately after DROM, at the next page boundary.
-		// IROM flash addr = dromFlashAddr + ceil(dromSize/pageSize)*pageSize
-		// (must match the computation in the startup assembly).
-		if len(iromSegs) > 0 {
-			dromPages := (dromSize + pageSize - 1) / pageSize
-			if dromPages == 0 {
-				dromPages = 1
-			}
-			iromFlashAddr := dromFlashAddr + uint32(dromPages)*pageSize
-			targetImageOffset := int(iromFlashAddr - flashBase)
-			if makeImage {
-				targetImageOffset = int(iromFlashAddr)
-			}
-			if outf.Len() > targetImageOffset {
-				return fmt.Errorf("ESP32: DROM too large, overlaps IROM at flash 0x%x", iromFlashAddr)
-			}
-			outf.Write(make([]byte, targetImageOffset-outf.Len()))
-			for _, seg := range iromSegs {
-				outf.Write(seg.data)
-			}
-		}
-	}
-
 	// QEMU (or more precisely, qemu-system-xtensa from Espressif) expects the
 	// image to be a certain size.
 	if makeImage {
@@ -195,11 +195,11 @@ type intHeap struct {
 	sort.IntSlice
 }

-func (h *intHeap) Push(x any) {
+func (h *intHeap) Push(x interface{}) {
 	h.IntSlice = append(h.IntSlice, x.(int))
 }

-func (h *intHeap) Pop() any {
+func (h *intHeap) Pop() interface{} {
 	x := h.IntSlice[len(h.IntSlice)-1]
 	h.IntSlice = h.IntSlice[:len(h.IntSlice)-1]
 	return x
@@ -133,7 +133,7 @@ func (l *Library) load(config *compileopts.Config, tmpdir string) (job *compileJ
 	// Note: -fdebug-prefix-map is necessary to make the output archive
 	// reproducible. Otherwise the temporary directory is stored in the archive
 	// itself, which varies each run.
-	args := append(l.cflags(target, headerPath), "-c", "-Oz", "-gdwarf-4", "-ffunction-sections", "-fdata-sections", "-Wno-macro-redefined", "--target="+compileopts.ClangTriple(target), "-fdebug-prefix-map="+dir+"="+remapDir)
+	args := append(l.cflags(target, headerPath), "-c", "-Oz", "-gdwarf-4", "-ffunction-sections", "-fdata-sections", "-Wno-macro-redefined", "--target="+target, "-fdebug-prefix-map="+dir+"="+remapDir)
 	resourceDir := goenv.ClangResourceDir(false)
 	if resourceDir != "" {
 		args = append(args, "-resource-dir="+resourceDir)
@@ -232,6 +232,7 @@ func (l *Library) load(config *compileopts.Config, tmpdir string) (job *compileJ
 	}
 	for _, path := range paths {
 		// Strip leading "../" parts off the path.
+		path := path
 		cleanpath := path
 		for strings.HasPrefix(cleanpath, "../") {
 			cleanpath = cleanpath[3:]
@@ -28,8 +28,8 @@ func buildMuslAllTypes(arch, muslDir, outputBitsDir string) error {
 		if err != nil {
 			return err
 		}
-		lines := strings.SplitSeq(string(data), "\n")
-		for line := range lines {
+		lines := strings.Split(string(data), "\n")
+		for _, line := range lines {
 			if strings.HasPrefix(line, "TYPEDEF ") {
 				matches := regexp.MustCompile(`TYPEDEF (.*) ([^ ]*);`).FindStringSubmatch(line)
 				value := matches[1]
@@ -1,13 +1,8 @@
 package builder

 import (
-	"flag"
-	"fmt"
-	"os"
 	"regexp"
 	"runtime"
-	"strconv"
-	"strings"
 	"testing"
 	"time"

@@ -16,19 +11,21 @@ import (

 var sema = make(chan struct{}, runtime.NumCPU())

-var flagUpdate = flag.Bool("update", false, "update builder package tests")
-
 type sizeTest struct {
-	target string
-	path   string
+	target     string
+	path       string
+	codeSize   uint64
+	rodataSize uint64
+	dataSize   uint64
+	bssSize    uint64
 }

 // Test whether code and data size is as expected for the given targets.
 // This tests both the logic of loadProgramSize and checks that code size
 // doesn't change unintentionally.
 //
-// If you find that code or data size is reduced, then great! You can update the
-// golden file by passing -update to the test.
+// If you find that code or data size is reduced, then great! You can reduce the
+// number in this test.
 // If you find that the code or data size is increased, take a look as to why
 // this is. It could be due to an update (LLVM version, Go version, etc) which
 // is fine, but it could also mean that a recent change introduced this size
@@ -45,110 +42,35 @@ func TestBinarySize(t *testing.T) {
 	// This is a small number of very diverse targets that we want to test.
 	tests := []sizeTest{
 		// microcontrollers
-		{"hifive1b", "examples/echo"},
-		{"microbit", "examples/serial"},
-		{"wioterminal", "examples/pininterrupt"},
+		{"hifive1b", "examples/echo", 3699, 297, 0, 2252},
+		{"microbit", "examples/serial", 2736, 356, 8, 2248},
+		{"wioterminal", "examples/pininterrupt", 7960, 1652, 132, 7480},

 		// TODO: also check wasm. Right now this is difficult, because
 		// wasm binaries are run through wasm-opt and therefore the
 		// output varies by binaryen version.
 	}
-	sizes := measureBinarySizes(t, tests)
-	output := formatSizeTable(tests, sizes)
-	checkGolden(t, "testdata/binary-size.txt", output)
-}
+	for _, tc := range tests {
+		tc := tc
+		t.Run(tc.target+"/"+tc.path, func(t *testing.T) {
+			t.Parallel()

-func checkGolden(t *testing.T, path, actual string) {
-	t.Helper()
-	if *flagUpdate {
-		if err := os.WriteFile(path, []byte(actual), 0o666); err != nil {
-			t.Fatal("failed to write updated golden file:", err)
-		}
-		return
-	}
-	expected, err := os.ReadFile(path)
-	if err != nil {
-		t.Fatal("failed to read golden file:", err)
-	}
-	if actual != string(expected) {
-		t.Errorf("%s does not match expected output (re-run with -update to regenerate):\nexpected:\n%sactual:\n%s", path, expected, actual)
-	}
-}
+			// Build the binary.
+			result := buildBinary(t, tc.target, tc.path)

-func measureBinarySizes(t *testing.T, tests []sizeTest) []*programSize {
-	t.Helper()
-	type result struct {
-		index int
-		size  *programSize
-		err   error
+			// Check whether the size of the binary matches the expected size.
+			sizes, err := loadProgramSize(result.Executable, nil)
+			if err != nil {
+				t.Fatal("could not read program size:", err)
+			}
+			if sizes.Code != tc.codeSize || sizes.ROData != tc.rodataSize || sizes.Data != tc.dataSize || sizes.BSS != tc.bssSize {
+				t.Errorf("Unexpected code size when compiling: -target=%s %s", tc.target, tc.path)
+				t.Errorf("            code rodata   data    bss")
+				t.Errorf("expected: %6d %6d %6d %6d", tc.codeSize, tc.rodataSize, tc.dataSize, tc.bssSize)
+				t.Errorf("actual:   %6d %6d %6d %6d", sizes.Code, sizes.ROData, sizes.Data, sizes.BSS)
+			}
+		})
 	}
-
-	results := make(chan result, len(tests))
-	for i, tc := range tests {
-		tmpdir := t.TempDir()
-		go func() {
-			size, err := measureBinarySize(tc, tmpdir)
-			results <- result{i, size, err}
-		}()
-	}
-
-	sizes := make([]*programSize, len(tests))
-	failed := false
-	for range tests {
-		result := <-results
-		if result.err != nil {
-			tc := tests[result.index]
-			t.Errorf("%s/%s: %v", tc.target, tc.path, result.err)
-			failed = true
-		}
-		sizes[result.index] = result.size
-	}
-	if failed {
-		t.FailNow()
-	}
-	return sizes
-}
-
-func measureBinarySize(tc sizeTest, tmpdir string) (*programSize, error) {
-	result, err := buildBinaryInDir(tc.target, tc.path, tmpdir)
-	if err != nil {
-		return nil, err
-	}
-	size, err := loadProgramSize(result.Executable, nil)
-	if err != nil {
-		return nil, fmt.Errorf("could not read program size: %w", err)
-	}
-	return size, nil
-}
-
-func formatSizeTable(tests []sizeTest, sizes []*programSize) string {
-	targetWidth := len("target")
-	packageWidth := len("package")
-	codeWidth := len("code")
-	rodataWidth := len("rodata")
-	dataWidth := len("data")
-	bssWidth := len("bss")
-	for i, tc := range tests {
-		targetWidth = max(targetWidth, len(tc.target))
-		packageWidth = max(packageWidth, len(tc.path))
-		codeWidth = max(codeWidth, len(strconv.FormatUint(sizes[i].Code, 10)))
-		rodataWidth = max(rodataWidth, len(strconv.FormatUint(sizes[i].ROData, 10)))
-		dataWidth = max(dataWidth, len(strconv.FormatUint(sizes[i].Data, 10)))
-		bssWidth = max(bssWidth, len(strconv.FormatUint(sizes[i].BSS, 10)))
-	}
-
-	var output strings.Builder
-	fmt.Fprintf(&output, "%-*s %-*s %*s %*s %*s %*s\n",
-		targetWidth, "target", packageWidth, "package",
-		codeWidth, "code", rodataWidth, "rodata", dataWidth, "data", bssWidth, "bss")
-	for i, tc := range tests {
-		size := sizes[i]
-		fmt.Fprintf(&output, "%-*s %-*s %*d %*d %*d %*d\n",
-			targetWidth, tc.target, packageWidth, tc.path,
-			codeWidth, size.Code, rodataWidth, size.ROData,
-			dataWidth, size.Data, bssWidth, size.BSS)
-	}
-	return output.String()
 }

 // Check that the -size=full flag attributes binary size to the correct package
@@ -163,6 +85,7 @@ func TestSizeFull(t *testing.T) {
 	pkgMatch := regexp.MustCompile(`^[a-z/]+$`)    // example: "internal/task"

 	for _, target := range tests {
+		target := target
 		t.Run(target, func(t *testing.T) {
 			t.Parallel()

@@ -193,15 +116,6 @@ func TestSizeFull(t *testing.T) {
 }

 func buildBinary(t *testing.T, targetString, pkgName string) BuildResult {
-	t.Helper()
-	result, err := buildBinaryInDir(targetString, pkgName, t.TempDir())
-	if err != nil {
-		t.Fatal(err)
-	}
-	return result
-}
-
-func buildBinaryInDir(targetString, pkgName, tmpdir string) (BuildResult, error) {
 	options := compileopts.Options{
 		Target:        targetString,
 		Opt:           "z",
@@ -212,15 +126,15 @@ func buildBinaryInDir(targetString, pkgName, tmpdir string) (BuildResult, error)
 	}
 	target, err := compileopts.LoadTarget(&options)
 	if err != nil {
-		return BuildResult{}, fmt.Errorf("could not load target: %w", err)
+		t.Fatal("could not load target:", err)
 	}
 	config := &compileopts.Config{
 		Options: &options,
 		Target:  target,
 	}
-	result, err := Build(pkgName, "", tmpdir, config)
+	result, err := Build(pkgName, "", t.TempDir(), config)
 	if err != nil {
-		return BuildResult{}, fmt.Errorf("could not build: %w", err)
+		t.Fatal("could not build:", err)
 	}
-	return result, nil
+	return result
 }
@@ -1,4 +0,0 @@
-target      package               code rodata data  bss
-hifive1b    examples/echo         4321    323    0 2268
-microbit    examples/serial       2842    382    8 2264
-wioterminal examples/pininterrupt 8039   1665  132 7496
@@ -116,7 +116,7 @@ func parseLLDErrors(text string) error {
 		// This can happen in some cases like with CGo and //go:linkname tricker.
 		if matches := regexp.MustCompile(`^ld.lld(-[0-9]+)?: error: undefined symbol: (.*)\n`).FindStringSubmatch(message); matches != nil {
 			symbolName := matches[2]
-			for line := range strings.SplitSeq(message, "\n") {
+			for _, line := range strings.Split(message, "\n") {
 				matches := regexp.MustCompile(`referenced by .* \(((.*):([0-9]+))\)`).FindStringSubmatch(line)
 				if matches != nil {
 					parsedError = true
@@ -40,7 +40,7 @@ func convertBinToUF2(input []byte, targetAddr uint32, uf2FamilyID string) ([]byt
 	}
 	bl.SetNumBlocks(len(blocks))

-	for i := range blocks {
+	for i := 0; i < len(blocks); i++ {
 		bl.SetBlockNo(i)
 		bl.SetData(blocks[i])

@@ -40,7 +40,7 @@ type cgoPackage struct {
 	tokenFiles      map[string]*token.File
 	definedGlobally map[string]ast.Node
 	noescapingFuncs map[string]*noescapingFunc // #cgo noescape lines
-	anonDecls       map[any]string
+	anonDecls       map[interface{}]string
 	cflags          []string // CFlags from #cgo lines
 	ldflags         []string // LDFlags from #cgo lines
 	visitedFiles    map[string][]byte
@@ -259,7 +259,7 @@ func Process(files []*ast.File, dir, importPath string, fset *token.FileSet, cfl
 		tokenFiles:      map[string]*token.File{},
 		definedGlobally: map[string]ast.Node{},
 		noescapingFuncs: map[string]*noescapingFunc{},
-		anonDecls:       map[any]string{},
+		anonDecls:       map[interface{}]string{},
 		visitedFiles:    map[string][]byte{},
 	}

@@ -302,7 +302,7 @@ func Process(files []*ast.File, dir, importPath string, fset *token.FileSet, cfl
 	// Find `import "C"` C fragments in the file.
 	p.cgoHeaders = make([]string, len(files)) // combined CGo header fragment for each file
 	for i, f := range files {
-		var cgoHeader strings.Builder
+		var cgoHeader string
 		for i := 0; i < len(f.Decls); i++ {
 			decl := f.Decls[i]
 			genDecl, ok := decl.(*ast.GenDecl)
@@ -337,8 +337,7 @@ func Process(files []*ast.File, dir, importPath string, fset *token.FileSet, cfl
 			// Iterate through all parts of the CGo header. Note that every //
 			// line is a new comment.
 			position := fset.Position(genDecl.Doc.Pos())
-			var fragment strings.Builder
-			fragment.WriteString(fmt.Sprintf("# %d %#v\n", position.Line, position.Filename))
+			fragment := fmt.Sprintf("# %d %#v\n", position.Line, position.Filename)
 			for _, comment := range genDecl.Doc.List {
 				// Find all #cgo lines, extract and use their contents, and
 				// replace the lines with spaces (to preserve locations).
@@ -355,13 +354,12 @@ func Process(files []*ast.File, dir, importPath string, fset *token.FileSet, cfl
 				} else { // comment
 					c = "  " + c[2:len(c)-2]
 				}
-				fragment.WriteString(c)
-				fragment.WriteByte('\n')
+				fragment += c + "\n"
 			}
-			cgoHeader.WriteString(fragment.String())
+			cgoHeader += fragment
 		}

-		p.cgoHeaders[i] = cgoHeader.String()
+		p.cgoHeaders[i] = cgoHeader
 	}

 	// Define CFlags that will be used while parsing the package.
@@ -1219,7 +1217,7 @@ func getPos(node ast.Node) token.Pos {
 // getUnnamedDeclName creates a name (with the given prefix) for the given C
 // declaration. This is used for structs, unions, and enums that are often
 // defined without a name and used in a typedef.
-func (p *cgoPackage) getUnnamedDeclName(prefix string, itf any) string {
+func (p *cgoPackage) getUnnamedDeclName(prefix string, itf interface{}) string {
 	if name, ok := p.anonDecls[itf]; ok {
 		return name
 	}
@@ -45,6 +45,7 @@ func TestCGo(t *testing.T) {
 		"flags",
 		"const",
 	} {
+		name := name // avoid a race condition
 		t.Run(name, func(t *testing.T) {
 			// Read the AST in memory.
 			path := filepath.Join("testdata", name+".go")
@@ -160,7 +160,7 @@ func (f *cgoFile) readNames(fragment string, cflags []string, filename string, c
 			pos := f.getClangLocationPosition(location, unit)
 			f.addError(pos, severity+": "+spelling)
 		}
-		for i := range numDiagnostics {
+		for i := 0; i < numDiagnostics; i++ {
 			diagnostic := C.clang_getDiagnostic(unit, C.uint(i))
 			addDiagnostic(diagnostic)

@@ -278,7 +278,7 @@ func (f *cgoFile) createASTNode(name string, c clangCursor) (ast.Node, any) {
 				Text:  strings.Join(doc, "\n"),
 			})
 		}
-		for i := range numArgs {
+		for i := 0; i < numArgs; i++ {
 			arg := C.tinygo_clang_Cursor_getArgument(c, C.uint(i))
 			argName := getString(C.tinygo_clang_getCursorSpelling(arg))
 			argType := C.clang_getArgType(cursorType, C.uint(i))
@@ -330,8 +330,10 @@ func (f *cgoFile) createASTNode(name string, c clangCursor) (ast.Node, any) {
 				NamePos: pos,
 				Name:    typeName,
 			},
-			Assign: pos,
-			Type:   f.makeASTType(underlyingType, pos),
+			Type: f.makeASTType(underlyingType, pos),
+		}
+		if underlyingType.kind != C.CXType_Enum {
+			typeSpec.Assign = pos
 		}
 		return typeSpec, nil
 	case C.CXCursor_VarDecl:
@@ -532,7 +534,7 @@ func tinygo_clang_globals_visitor(c, parent C.GoCXCursor, client_data C.CXClient

 // Get the precise location in the source code. Used for uniquely identifying
 // source locations.
-func (f *cgoFile) getUniqueLocationID(pos token.Pos, cursor C.GoCXCursor) any {
+func (f *cgoFile) getUniqueLocationID(pos token.Pos, cursor C.GoCXCursor) interface{} {
 	clangLocation := C.tinygo_clang_getCursorLocation(cursor)
 	var file C.CXFile
 	var line C.unsigned
@@ -804,14 +806,6 @@ func (f *cgoFile) makeASTType(typ C.CXType, pos token.Pos) ast.Expr {
 			f.addError(pos, fmt.Sprintf("unknown elaborated type (libclang type kind %s)", typeKindSpelling))
 			typeName = "<unknown>"
 		}
-	case C.CXType_Unexposed:
-		// LLVM 22+ may report certain builtin type aliases (e.g. __size_t)
-		// as Unexposed. Resolve via the canonical type.
-		canonical := C.clang_getCanonicalType(typ)
-		if canonical.kind != C.CXType_Unexposed && canonical.kind != C.CXType_Invalid {
-			return f.makeASTType(canonical, pos)
-		}
-		// If still unexposed, fall through to the error below.
 	case C.CXType_Record:
 		cursor := C.tinygo_clang_getTypeDeclaration(typ)
 		name := getString(C.tinygo_clang_getCursorSpelling(cursor))
@@ -1,4 +1,4 @@
-//go:build !byollvm && !llvm15 && !llvm16 && !llvm17 && !llvm18 && !llvm19 && !llvm21 && !llvm22
+//go:build !byollvm && !llvm15 && !llvm16 && !llvm17 && !llvm18 && !llvm19

 package cgo

@@ -1,15 +0,0 @@
-//go:build !byollvm && llvm21
-
-package cgo
-
-/*
-#cgo linux        CFLAGS:  -I/usr/include/llvm-21 -I/usr/include/llvm-c-21 -I/usr/lib/llvm-21/include -I/usr/lib64/llvm21/include
-#cgo darwin,amd64 CFLAGS:  -I/usr/local/opt/llvm@21/include
-#cgo darwin,arm64 CFLAGS:  -I/opt/homebrew/opt/llvm@21/include
-#cgo freebsd      CFLAGS:  -I/usr/local/llvm21/include
-#cgo linux        LDFLAGS: -L/usr/lib/llvm-21/lib -lclang
-#cgo darwin,amd64 LDFLAGS: -L/usr/local/opt/llvm@21/lib -lclang
-#cgo darwin,arm64 LDFLAGS: -L/opt/homebrew/opt/llvm@21/lib -lclang
-#cgo freebsd      LDFLAGS: -L/usr/local/llvm21/lib -lclang
-*/
-import "C"
@@ -1,15 +0,0 @@
-//go:build !byollvm && llvm22
-
-package cgo
-
-/*
-#cgo linux        CFLAGS:  -I/usr/include/llvm-22 -I/usr/include/llvm-c-22 -I/usr/lib/llvm-22/include -I/usr/lib64/llvm22/include
-#cgo darwin,amd64 CFLAGS:  -I/usr/local/opt/llvm@22/include
-#cgo darwin,arm64 CFLAGS:  -I/opt/homebrew/opt/llvm@22/include
-#cgo freebsd      CFLAGS:  -I/usr/local/llvm22/include
-#cgo linux        LDFLAGS: -L/usr/lib/llvm-22/lib -lclang
-#cgo darwin,amd64 LDFLAGS: -L/usr/local/opt/llvm@22/lib -lclang
-#cgo darwin,arm64 LDFLAGS: -L/opt/homebrew/opt/llvm@22/lib -lclang
-#cgo freebsd      LDFLAGS: -L/usr/local/llvm22/lib -lclang
-*/
-import "C"
@@ -12,17 +12,17 @@ import "C"
 // C. It is useful if an API uses function pointers and you cannot pass a Go
 // pointer but only a C pointer.
 type refMap struct {
-	refs map[unsafe.Pointer]any
+	refs map[unsafe.Pointer]interface{}
 	lock sync.Mutex
 }

 // Put stores a value in the map. It can later be retrieved using Get. It must
 // be removed using Remove to avoid memory leaks.
-func (m *refMap) Put(v any) unsafe.Pointer {
+func (m *refMap) Put(v interface{}) unsafe.Pointer {
 	m.lock.Lock()
 	defer m.lock.Unlock()
 	if m.refs == nil {
-		m.refs = make(map[unsafe.Pointer]any, 1)
+		m.refs = make(map[unsafe.Pointer]interface{}, 1)
 	}
 	ref := C.malloc(1)
 	m.refs[ref] = v
@@ -31,7 +31,7 @@ func (m *refMap) Put(v any) unsafe.Pointer {

 // Get returns a stored value previously inserted with Put. Use the same
 // reference as you got from Put.
-func (m *refMap) Get(ref unsafe.Pointer) any {
+func (m *refMap) Get(ref unsafe.Pointer) interface{} {
 	m.lock.Lock()
 	defer m.lock.Unlock()
 	return m.refs[ref]
@@ -8,7 +8,6 @@ import (
 	"os"
 	"path/filepath"
 	"regexp"
-	"slices"
 	"strconv"
 	"strings"

@@ -61,15 +60,13 @@ func (c *Config) BuildMode() string {
 // RISC-V processor, that could be "+a,+c,+m". For many targets, an empty list
 // will be returned.
 func (c *Config) Features() string {
-	var features string
 	if c.Target.Features == "" {
-		features = c.Options.LLVMFeatures
-	} else if c.Options.LLVMFeatures == "" {
-		features = c.Target.Features
-	} else {
-		features = c.Target.Features + "," + c.Options.LLVMFeatures
+		return c.Options.LLVMFeatures
 	}
-	return patchFeatures(features)
+	if c.Options.LLVMFeatures == "" {
+		return c.Target.Features
+	}
+	return c.Target.Features + "," + c.Options.LLVMFeatures
 }

 // ABI returns the -mabi= flag for this target (like -mabi=lp64). A zero-length
@@ -143,7 +140,13 @@ func (c *Config) GC() string {
 func (c *Config) NeedsStackObjects() bool {
 	switch c.GC() {
 	case "conservative", "custom", "precise", "boehm":
-		return slices.Contains(c.BuildTags(), "tinygo.wasm")
+		for _, tag := range c.BuildTags() {
+			if tag == "tinygo.wasm" {
+				return true
+			}
+		}
+
+		return false
 	default:
 		return false
 	}
@@ -242,7 +245,7 @@ func (c *Config) RP2040BootPatch() bool {
 // Return a canonicalized architecture name, so we don't have to deal with arm*
 // vs thumb* vs arm64.
 func CanonicalArchName(triple string) string {
-	arch, _, _ := strings.Cut(triple, "-")
+	arch := strings.Split(triple, "-")[0]
 	if arch == "arm64" {
 		return "aarch64"
 	}
@@ -349,7 +352,7 @@ func (c *Config) CFlags(libclang bool) []string {
 	// Use the same optimization level as TinyGo.
 	cflags = append(cflags, "-O"+c.Options.Opt)
 	// Set the LLVM target triple.
-	cflags = append(cflags, "--target="+ClangTriple(c.Triple()))
+	cflags = append(cflags, "--target="+c.Triple())
 	// Set the -mcpu (or similar) flag.
 	if c.Target.CPU != "" {
 		if c.GOARCH() == "amd64" || c.GOARCH() == "386" {
@@ -463,22 +466,6 @@ func (c *Config) LDFlags() []string {
 	return ldflags
 }

-// LinkerFlavor returns how the configured linker should be driven.
-// Usually this is derived from GOOS, but targets may override it explicitly.
-func (c *Config) LinkerFlavor() string {
-	if c.Target.LinkerFlavor != "" {
-		return c.Target.LinkerFlavor
-	}
-	switch c.GOOS() {
-	case "windows":
-		return "coff"
-	case "darwin":
-		return "darwin"
-	default:
-		return "gnu"
-	}
-}
-
 // ExtraFiles returns the list of extra files to be built and linked with the
 // executable. This can include extra C and assembly files.
 func (c *Config) ExtraFiles() []string {
@@ -1,9 +0,0 @@
-//go:build !llvm22 && !llvm14 && !llvm15 && !llvm16 && !llvm17 && !llvm18 && !llvm19
-
-package compileopts
-
-// patchFeatures applies LLVM-version-specific feature name mappings.
-// For LLVM 20/21, features in the target JSON files are already correct.
-func patchFeatures(features string) string {
-	return features
-}
@@ -1,26 +0,0 @@
-//go:build llvm22
-
-package compileopts
-
-import "strings"
-
-// patchFeatures applies LLVM-version-specific feature name mappings.
-// LLVM 22 renamed several Xtensa target features.
-func patchFeatures(features string) string {
-	// Xtensa feature renames in LLVM 22:
-	//   atomctl → (removed, no direct replacement)
-	//   memctl  → (removed, no direct replacement)
-	//   esp32s3 → esp32s3ops
-	//   timerint → timers3 (for esp32/esp32s3) or timers1 (for esp8266)
-	// Since we can't distinguish which timer variant at this level,
-	// just remove the obsolete features. The CPU definition already
-	// implies the correct features in LLVM 22.
-	replacer := strings.NewReplacer(
-		"+atomctl,", "",
-		"+memctl,", "",
-		"+esp32s3,", "+esp32s3ops,",
-		"+timerint,", "",
-		",+timerint", "",
-	)
-	return replacer.Replace(features)
-}
@@ -1,16 +0,0 @@
-//go:build llvm14 || llvm15 || llvm16 || llvm17 || llvm18 || llvm19
-
-package compileopts
-
-import "strings"
-
-// patchFeatures applies LLVM-version-specific feature name mappings.
-// LLVM 19 and earlier do not have +bulk-memory-opt or
-// +call-indirect-overlong for WebAssembly (added in LLVM 20).
-func patchFeatures(features string) string {
-	features = strings.ReplaceAll(features, ",+bulk-memory-opt", "")
-	features = strings.ReplaceAll(features, "+bulk-memory-opt,", "")
-	features = strings.ReplaceAll(features, ",+call-indirect-overlong", "")
-	features = strings.ReplaceAll(features, "+call-indirect-overlong,", "")
-	return features
-}
@@ -1,65 +0,0 @@
-package compileopts
-
-import (
-	"go/build/constraint"
-	"os"
-	"path/filepath"
-	"strings"
-	"testing"
-)
-
-// TestFinalizerRunnerSchedulerCoverage verifies that each scheduler selects one runner file.
-// It uses validSchedulerOptions so new schedulers are included.
-func TestFinalizerRunnerSchedulerCoverage(t *testing.T) {
-	files := []string{
-		"gc_finalizer_sched.go",
-		"gc_finalizer_sched_none.go",
-		"gc_finalizer_sched_other.go",
-	}
-	exprs := make([]constraint.Expr, len(files))
-	for i, name := range files {
-		exprs[i] = readBuildConstraint(t, filepath.Join("..", "src", "runtime", name))
-	}
-
-	for _, sched := range validSchedulerOptions {
-		// The finalizer table exists under block GCs.
-		// gc.conservative satisfies the GC condition in every constraint.
-		tags := map[string]bool{
-			"gc.conservative":    true,
-			"scheduler." + sched: true,
-		}
-		var matched []string
-		for i, expr := range exprs {
-			if expr.Eval(func(tag string) bool { return tags[tag] }) {
-				matched = append(matched, files[i])
-			}
-		}
-		if len(matched) != 1 {
-			t.Errorf("scheduler.%s: spawnFinalizerRunner defined in %d files %v, want exactly 1",
-				sched, len(matched), matched)
-		}
-	}
-}
-
-func readBuildConstraint(t *testing.T, path string) constraint.Expr {
-	t.Helper()
-	data, err := os.ReadFile(path)
-	if err != nil {
-		t.Fatal(err)
-	}
-	for _, line := range strings.Split(string(data), "\n") {
-		line = strings.TrimSpace(line)
-		if constraint.IsGoBuild(line) {
-			expr, err := constraint.Parse(line)
-			if err != nil {
-				t.Fatalf("%s: %v", path, err)
-			}
-			return expr
-		}
-		if line != "" && !strings.HasPrefix(line, "//") {
-			break // reached code before any //go:build line
-		}
-	}
-	t.Fatalf("%s: no //go:build line found", path)
-	return nil
-}
@@ -3,7 +3,6 @@ package compileopts
 import (
 	"fmt"
 	"regexp"
-	"slices"
 	"strings"
 	"time"
 )
@@ -68,7 +67,7 @@ type Options struct {
 // Verify performs a validation on the given options, raising an error if options are not valid.
 func (o *Options) Verify() error {
 	if o.BuildMode != "" {
-		valid := slices.Contains(validBuildModeOptions, o.BuildMode)
+		valid := isInArray(validBuildModeOptions, o.BuildMode)
 		if !valid {
 			return fmt.Errorf(`invalid buildmode option '%s': valid values are %s`,
 				o.BuildMode,
@@ -76,7 +75,7 @@ func (o *Options) Verify() error {
 		}
 	}
 	if o.GC != "" {
-		valid := slices.Contains(validGCOptions, o.GC)
+		valid := isInArray(validGCOptions, o.GC)
 		if !valid {
 			return fmt.Errorf(`invalid gc option '%s': valid values are %s`,
 				o.GC,
@@ -85,7 +84,7 @@ func (o *Options) Verify() error {
 	}

 	if o.Scheduler != "" {
-		valid := slices.Contains(validSchedulerOptions, o.Scheduler)
+		valid := isInArray(validSchedulerOptions, o.Scheduler)
 		if !valid {
 			return fmt.Errorf(`invalid scheduler option '%s': valid values are %s`,
 				o.Scheduler,
@@ -94,7 +93,7 @@ func (o *Options) Verify() error {
 	}

 	if o.Serial != "" {
-		valid := slices.Contains(validSerialOptions, o.Serial)
+		valid := isInArray(validSerialOptions, o.Serial)
 		if !valid {
 			return fmt.Errorf(`invalid serial option '%s': valid values are %s`,
 				o.Serial,
@@ -103,7 +102,7 @@ func (o *Options) Verify() error {
 	}

 	if o.PrintSizes != "" {
-		valid := slices.Contains(validPrintSizeOptions, o.PrintSizes)
+		valid := isInArray(validPrintSizeOptions, o.PrintSizes)
 		if !valid {
 			return fmt.Errorf(`invalid size option '%s': valid values are %s`,
 				o.PrintSizes,
@@ -112,7 +111,7 @@ func (o *Options) Verify() error {
 	}

 	if o.PanicStrategy != "" {
-		valid := slices.Contains(validPanicStrategyOptions, o.PanicStrategy)
+		valid := isInArray(validPanicStrategyOptions, o.PanicStrategy)
 		if !valid {
 			return fmt.Errorf(`invalid panic option '%s': valid values are %s`,
 				o.PanicStrategy,
@@ -121,10 +120,19 @@ func (o *Options) Verify() error {
 	}

 	if o.Opt != "" {
-		if !slices.Contains(validOptOptions, o.Opt) {
+		if !isInArray(validOptOptions, o.Opt) {
 			return fmt.Errorf("invalid -opt=%s: valid values are %s", o.Opt, strings.Join(validOptOptions, ", "))
 		}
 	}

 	return nil
 }
+
+func isInArray(arr []string, item string) bool {
+	for _, i := range arr {
+		if i == item {
+			return true
+		}
+	}
+	return false
+}
@@ -38,8 +38,7 @@ type TargetSpec struct {
 	Scheduler        string   `json:"scheduler,omitempty"`
 	Serial           string   `json:"serial,omitempty"` // which serial output to use (uart, usb, none)
 	Linker           string   `json:"linker,omitempty"`
-	LinkerFlavor     string   `json:"linker-flavor,omitempty"` // how to drive the configured linker (for example: gnu, coff, darwin)
-	RTLib            string   `json:"rtlib,omitempty"`         // compiler runtime library (libgcc, compiler-rt)
+	RTLib            string   `json:"rtlib,omitempty"` // compiler runtime library (libgcc, compiler-rt)
 	Libc             string   `json:"libc,omitempty"`
 	AutoStackSize    *bool    `json:"automatic-stack-size,omitempty"` // Determine stack size automatically at compile time.
 	DefaultStackSize uint64   `json:"default-stack-size,omitempty"`   // Default stack size if the size couldn't be determined at compile time.
@@ -475,12 +474,10 @@ func defaultTarget(options *Options) (*TargetSpec, error) {
 				"-m", "i386pep",
 				"--image-base", "0x400000",
 			)
-			spec.RTLib = "compiler-rt"
 		case "arm64":
 			spec.LDFlags = append(spec.LDFlags,
 				"-m", "arm64pe",
 			)
-			spec.RTLib = "compiler-rt"
 		}
 		spec.LDFlags = append(spec.LDFlags,
 			"-Bdynamic",
@@ -1,10 +1,8 @@
 package compileopts

 import (
-	"encoding/csv"
 	"errors"
 	"io/fs"
-	"os"
 	"reflect"
 	"testing"
 )
@@ -56,38 +54,6 @@ func TestLoadTarget_InheritableOnlyTargetStillLoadable(t *testing.T) {
 	}
 }

-func TestLoadPY32ConcreteTargets(t *testing.T) {
-	file, err := os.Open("../tools/gen-py32-targets/devices.csv")
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer file.Close()
-
-	records, err := csv.NewReader(file).ReadAll()
-	if err != nil {
-		t.Fatal(err)
-	}
-	for _, record := range records[1:] {
-		part, core := record[0], record[2]
-		t.Run(part, func(t *testing.T) {
-			spec, err := LoadTarget(&Options{Target: part})
-			if err != nil {
-				t.Fatal(err)
-			}
-			if spec.LinkerScript == "" {
-				t.Error("concrete target has no linker script")
-			}
-			wantCPU := "cortex-m0plus"
-			if core == "m4" {
-				wantCPU = "cortex-m4"
-			}
-			if spec.CPU != wantCPU {
-				t.Errorf("CPU is %q, want %q", spec.CPU, wantCPU)
-			}
-		})
-	}
-}
-
 func TestOverrideProperties(t *testing.T) {
 	baseAutoStackSize := true
 	base := &TargetSpec{
@@ -146,52 +112,3 @@ func TestOverrideProperties(t *testing.T) {
 	}

 }
-
-func TestConfigLinkerFlavor(t *testing.T) {
-	tests := []struct {
-		name   string
-		target *TargetSpec
-		goos   string
-		want   string
-	}{
-		{
-			name:   "default gnu",
-			target: &TargetSpec{},
-			goos:   "linux",
-			want:   "gnu",
-		},
-		{
-			name:   "default coff",
-			target: &TargetSpec{},
-			goos:   "windows",
-			want:   "coff",
-		},
-		{
-			name:   "default darwin",
-			target: &TargetSpec{},
-			goos:   "darwin",
-			want:   "darwin",
-		},
-		{
-			name: "target override",
-			target: &TargetSpec{
-				LinkerFlavor: "coff",
-			},
-			goos: "linux",
-			want: "coff",
-		},
-	}
-
-	for _, tc := range tests {
-		t.Run(tc.name, func(t *testing.T) {
-			tc.target.GOOS = tc.goos
-			config := &Config{
-				Options: &Options{},
-				Target:  tc.target,
-			}
-			if got := config.LinkerFlavor(); got != tc.want {
-				t.Fatalf("LinkerFlavor() = %q, want %q", got, tc.want)
-			}
-		})
-	}
-}
@@ -1,12 +0,0 @@
-//go:build llvm22
-
-package compileopts
-
-import "strings"
-
-// ClangTriple returns the target triple to pass to Clang's --target flag.
-// LLVM 22 deprecated the "wasm32-unknown-wasi" triple in favor of
-// "wasm32-unknown-wasip1", so we substitute it here to avoid warnings.
-func ClangTriple(triple string) string {
-	return strings.Replace(triple, "wasm32-unknown-wasi", "wasm32-unknown-wasip1", 1)
-}
@@ -1,9 +0,0 @@
-//go:build !llvm22
-
-package compileopts
-
-// ClangTriple returns the target triple to pass to Clang's --target flag.
-// For pre-LLVM 22, the triple is used as-is.
-func ClangTriple(triple string) string {
-	return triple
-}
@@ -35,9 +35,6 @@ const (

 	// Whether this is a readonly parameter (for example, a string pointer).
 	paramIsReadonly
-
-	// Whether this parameter is passed through backing storage.
-	paramIsIndirect
 )

 // createRuntimeCallCommon creates a runtime call. Use createRuntimeCall or
@@ -105,18 +102,6 @@ func (b *builder) createInvoke(fnType llvm.Type, fn llvm.Value, args []llvm.Valu
 // 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 {
-	if c.isIndirectAggregate(t) {
-		return []paramInfo{{
-			llvmType: c.dataPtrType,
-			name:     name,
-			elemSize: c.targetData.TypeAllocSize(t),
-			flags:    paramIsGoParam | paramIsReadonly | paramIsIndirect,
-		}}
-	}
-	return c.expandDirectFormalParamType(t, name, goType)
-}
-
-func (c *compilerContext) expandDirectFormalParamType(t llvm.Type, name string, goType types.Type) []paramInfo {
 	switch t.TypeKind() {
 	case llvm.StructTypeKind:
 		fieldInfos := c.flattenAggregateType(t, name, goType)
@@ -130,38 +115,6 @@ func (c *compilerContext) expandDirectFormalParamType(t llvm.Type, name string,
 	return []paramInfo{c.getParamInfo(t, name, goType)}
 }

-func (c *compilerContext) storedParamType(t llvm.Type, exported bool) llvm.Type {
-	if c.isIndirectParam(t, exported) {
-		return c.dataPtrType
-	}
-	return t
-}
-
-func (c *compilerContext) isIndirectParam(t llvm.Type, exported bool) bool {
-	return !exported && c.isIndirectAggregate(t)
-}
-
-func (b *builder) appendStoredValueTypes(valueTypes []llvm.Type, values []ssa.Value, exported bool) []llvm.Type {
-	for _, value := range values {
-		valueTypes = append(valueTypes, b.storedParamType(b.getLLVMType(value.Type()), exported))
-	}
-	return valueTypes
-}
-
-func (b *builder) appendStoredParamTypes(valueTypes []llvm.Type, params []*types.Var, exported bool) []llvm.Type {
-	for _, param := range params {
-		valueTypes = append(valueTypes, b.storedParamType(b.getLLVMType(param.Type()), exported))
-	}
-	return valueTypes
-}
-
-func (b *builder) prependIndirectResult(sig *types.Signature, exported bool, params []llvm.Value, name string) []llvm.Value {
-	if resultType, indirect := b.hasIndirectResult(sig); !exported && indirect {
-		return append([]llvm.Value{b.createIndirectStorage(resultType, name)}, params...)
-	}
-	return params
-}
-
 // expandFormalParamOffsets returns a list of offsets from the start of an
 // object of type t after it would have been split up by expandFormalParam. This
 // is useful for debug information, where it is necessary to know the offset
@@ -30,15 +30,17 @@ func (b *builder) createMakeChan(expr *ssa.MakeChan) llvm.Value {
 // actual channel send operation during goroutine lowering.
 func (b *builder) createChanSend(instr *ssa.Send) {
 	ch := b.getValue(instr.Chan, getPos(instr))
+	chanValue := b.getValue(instr.X, getPos(instr))

 	// store value-to-send
 	valueType := b.getLLVMType(instr.X.Type())
 	isZeroSize := b.targetData.TypeAllocSize(valueType) == 0
-	var storage valueStorage
+	var valueAlloca, valueAllocaSize llvm.Value
 	if isZeroSize {
-		storage.ptr = llvm.ConstNull(b.dataPtrType)
+		valueAlloca = llvm.ConstNull(b.dataPtrType)
 	} else {
-		storage = b.getValueStorage(instr.X, "chan.value")
+		valueAlloca, valueAllocaSize = b.createTemporaryAlloca(valueType, "chan.value")
+		b.CreateStore(chanValue, valueAlloca)
 	}

 	// Allocate buffer for the channel operation.
@@ -46,13 +48,15 @@ func (b *builder) createChanSend(instr *ssa.Send) {
 	channelOpAlloca, channelOpAllocaSize := b.createTemporaryAlloca(channelOp, "chan.op")

 	// Do the send.
-	b.createRuntimeInvoke("chanSend", []llvm.Value{ch, storage.ptr, channelOpAlloca}, "")
+	b.createRuntimeInvoke("chanSend", []llvm.Value{ch, valueAlloca, channelOpAlloca}, "")

 	// End the lifetime of the allocas.
 	// This also works around a bug in CoroSplit, at least in LLVM 8:
 	// https://bugs.llvm.org/show_bug.cgi?id=41742
 	b.emitLifetimeEnd(channelOpAlloca, channelOpAllocaSize)
-	b.endValueStorage(storage)
+	if !isZeroSize {
+		b.emitLifetimeEnd(valueAlloca, valueAllocaSize)
+	}
 }

 // createChanRecv emits a pseudo chan receive operation. It is lowered to the
@@ -62,17 +66,37 @@ func (b *builder) createChanRecv(unop *ssa.UnOp) llvm.Value {
 	ch := b.getValue(unop.X, getPos(unop))

 	// Allocate memory to receive into.
-	result := b.createRuntimeValueResult(valueType, unop.CommaOk, true, "chan")
+	isZeroSize := b.targetData.TypeAllocSize(valueType) == 0
+	var valueAlloca, valueAllocaSize llvm.Value
+	if isZeroSize {
+		valueAlloca = llvm.ConstNull(b.dataPtrType)
+	} else {
+		valueAlloca, valueAllocaSize = b.createTemporaryAlloca(valueType, "chan.value")
+	}

 	// Allocate buffer for the channel operation.
 	channelOp := b.getLLVMRuntimeType("channelOp")
 	channelOpAlloca, channelOpAllocaSize := b.createTemporaryAlloca(channelOp, "chan.op")

 	// Do the receive.
-	commaOk := b.createRuntimeCall("chanRecv", []llvm.Value{ch, result.valuePtr, channelOpAlloca}, "")
-	received := result.finish(b, commaOk, "chan.received")
+	commaOk := b.createRuntimeCall("chanRecv", []llvm.Value{ch, valueAlloca, channelOpAlloca}, "")
+	var received llvm.Value
+	if isZeroSize {
+		received = llvm.ConstNull(valueType)
+	} else {
+		received = b.CreateLoad(valueType, valueAlloca, "chan.received")
+		b.emitLifetimeEnd(valueAlloca, valueAllocaSize)
+	}
 	b.emitLifetimeEnd(channelOpAlloca, channelOpAllocaSize)
-	return received
+
+	if unop.CommaOk {
+		tuple := llvm.Undef(b.ctx.StructType([]llvm.Type{valueType, b.ctx.Int1Type()}, false))
+		tuple = b.CreateInsertValue(tuple, received, 0, "")
+		tuple = b.CreateInsertValue(tuple, commaOk, 1, "")
+		return tuple
+	} else {
+		return received
+	}
 }

 // createChanClose closes the given channel.
@@ -146,7 +170,9 @@ func (b *builder) createSelect(expr *ssa.Select) llvm.Value {
 		case types.SendOnly:
 			// Store this value in an alloca and put a pointer to this alloca
 			// in the send state.
-			alloca := b.getSelectSendStorage(state.Send)
+			sendValue := b.getValue(state.Send, state.Pos)
+			alloca := llvmutil.CreateEntryBlockAlloca(b.Builder, sendValue.Type(), "select.send.value")
+			b.CreateStore(sendValue, alloca)
 			selectState = b.CreateInsertValue(selectState, alloca, 1, "")
 		default:
 			panic("unreachable")
@@ -254,17 +280,7 @@ func (b *builder) getChanSelectResult(expr *ssa.Extract) llvm.Value {
 		// receive can proceed at a time) so we'll get that alloca, bitcast
 		// it to the correct type, and dereference it.
 		recvbuf := b.selectRecvBuf[expr.Tuple.(*ssa.Select)]
-		return b.loadFromStorage(recvbuf, expr.Type(), "select.received")
+		typ := b.getLLVMType(expr.Type())
+		return b.CreateLoad(typ, recvbuf, "")
 	}
 }
-
-func (b *builder) getSelectSendStorage(value ssa.Value) llvm.Value {
-	typ := b.getLLVMType(value.Type())
-	if b.isIndirectAggregate(typ) {
-		return b.getValuePointer(value)
-	}
-	llvmValue := b.getValue(value, getPos(value))
-	ptr := llvmutil.CreateEntryBlockAlloca(b.Builder, typ, "select.send.value")
-	b.CreateStore(llvmValue, ptr)
-	return ptr
-}
@@ -90,8 +90,7 @@ type compilerContext struct {
 	astComments      map[string]*ast.CommentGroup
 	embedGlobals     map[string][]*loader.EmbedFile
 	pkg              *types.Package
-	loaderPkg        *loader.Package // current package being compiled (for AST access)
-	packageDir       string          // directory for this package
+	packageDir       string // directory for this package
 	runtimePkg       *types.Package
 	localTypeNames   typeutil.Map // *types.Named (synthetic local from generic instantiation) -> string
 }
@@ -155,8 +154,6 @@ type builder struct {
 	llvmFn            llvm.Value
 	info              functionInfo
 	locals            map[ssa.Value]llvm.Value // local variables
-	indirectValues    map[ssa.Value]llvm.Value
-	indirectReturn    llvm.Value
 	blockInfo         []blockInfo
 	currentBlock      *ssa.BasicBlock
 	currentBlockInfo  *blockInfo
@@ -171,7 +168,7 @@ type builder struct {
 	dilocals          map[*types.Var]llvm.Metadata
 	initInlinedAt     llvm.Metadata            // fake inlinedAt position
 	initPseudoFuncs   map[string]llvm.Metadata // fake "inlined" functions for proper init debug locations
-	allDeferFuncs     []any
+	allDeferFuncs     []interface{}
 	deferFuncs        map[*ssa.Function]int
 	deferInvokeFuncs  map[string]int
 	deferClosureFuncs map[*ssa.Function]int
@@ -195,7 +192,6 @@ func newBuilder(c *compilerContext, irbuilder llvm.Builder, f *ssa.Function) *bu
 		llvmFn:          fn,
 		info:            c.getFunctionInfo(f),
 		locals:          make(map[ssa.Value]llvm.Value),
-		indirectValues:  make(map[ssa.Value]llvm.Value),
 		dilocals:        make(map[*types.Var]llvm.Metadata),
 	}
 }
@@ -296,19 +292,18 @@ func Sizes(machine llvm.TargetMachine) types.Sizes {
 }

 // CompilePackage compiles a single package to a LLVM module.
-//
-// The SSA package must already be built. When packages are compiled
-// concurrently, the entire SSA program must be built before compilation starts.
 func CompilePackage(moduleName string, pkg *loader.Package, ssaPkg *ssa.Package, machine llvm.TargetMachine, config *Config, dumpSSA bool) (llvm.Module, []error) {
 	c := newCompilerContext(moduleName, machine, config, dumpSSA)
 	defer c.dispose()
 	c.packageDir = pkg.OriginalDir()
 	c.embedGlobals = pkg.EmbedGlobals
 	c.pkg = pkg.Pkg
-	c.loaderPkg = pkg
 	c.runtimePkg = ssaPkg.Prog.ImportedPackage("runtime").Pkg
 	c.program = ssaPkg.Prog

+	// Convert AST to SSA.
+	ssaPkg.Build()
+
 	// Assign names to function-local named types before compiling the
 	// package, so that types declared in different functions (or in
 	// different instantiations of a generic function) do not collide.
@@ -425,19 +420,19 @@ func (c *compilerContext) makeLLVMType(goType types.Type) llvm.Type {
 			return c.ctx.Int8Type()
 		case types.Int16, types.Uint16:
 			return c.ctx.Int16Type()
-		case types.Int32, types.Uint32, types.UntypedRune:
+		case types.Int32, types.Uint32:
 			return c.ctx.Int32Type()
-		case types.Int, types.Uint, types.UntypedInt:
+		case types.Int, types.Uint:
 			return c.intType
 		case types.Int64, types.Uint64:
 			return c.ctx.Int64Type()
 		case types.Float32:
 			return c.ctx.FloatType()
-		case types.Float64, types.UntypedFloat:
+		case types.Float64:
 			return c.ctx.DoubleType()
 		case types.Complex64:
 			return c.ctx.StructType([]llvm.Type{c.ctx.FloatType(), c.ctx.FloatType()}, false)
-		case types.Complex128, types.UntypedComplex:
+		case types.Complex128:
 			return c.ctx.StructType([]llvm.Type{c.ctx.DoubleType(), c.ctx.DoubleType()}, false)
 		case types.String, types.UntypedString:
 			return c.getLLVMRuntimeType("_string")
@@ -1285,28 +1280,10 @@ func (b *builder) createFunctionStart(intrinsic bool) {

 	// Load function parameters
 	llvmParamIndex := 0
-	if _, indirectResult := b.hasIndirectResult(b.fn.Signature); indirectResult && !b.info.exported {
-		b.indirectReturn = b.llvmFn.Param(llvmParamIndex)
-		b.indirectReturn.SetName("return")
-		llvmParamIndex++
-	}
 	for _, param := range b.fn.Params {
 		llvmType := b.getLLVMType(param.Type())
-		if b.isIndirectParam(llvmType, b.info.exported) {
-			llvmParam := b.llvmFn.Param(llvmParamIndex)
-			llvmParam.SetName(param.Name())
-			b.indirectValues[param] = llvmParam
-			llvmParamIndex++
-			continue
-		}
-		var paramInfos []paramInfo
-		if b.info.exported {
-			paramInfos = b.expandDirectFormalParamType(llvmType, param.Name(), param.Type())
-		} else {
-			paramInfos = b.expandFormalParamType(llvmType, param.Name(), param.Type())
-		}
 		fields := make([]llvm.Value, 0, 1)
-		for _, info := range paramInfos {
+		for _, info := range b.expandFormalParamType(llvmType, param.Name(), param.Type()) {
 			param := b.llvmFn.Param(llvmParamIndex)
 			param.SetName(info.name)
 			fields = append(fields, param)
@@ -1377,6 +1354,15 @@ func (b *builder) createFunctionStart(intrinsic bool) {
 // diagnostic.
 func (b *builder) createFunction() {
 	b.createFunctionStart(false)
+	// createFunctionStart returns early (leaving blockInfo unset) when it hits
+	// an error such as a redeclared symbol. Don't plow into the block loop and
+	// panic on an empty blockInfo — the error was already recorded.
+	if b.blockInfo == nil {
+		// TINYGO-DEBUG: surface the redeclaration collision.
+		fmt.Printf("TINYGO-DEBUG skipping fn (redeclared/errored): %s  pkg=%s\n",
+			b.fn.RelString(nil), b.fn.Pkg.Pkg.Path())
+		return
+	}

 	// Fill blocks with instructions.
 	for _, block := range b.fn.DomPreorder() {
@@ -1444,7 +1430,7 @@ func (b *builder) createFunction() {
 	for _, phi := range b.phis {
 		block := phi.ssa.Block()
 		for i, edge := range phi.ssa.Edges {
-			llvmVal := b.getCallArgument(edge, false)
+			llvmVal := b.getValue(edge, getPos(phi.ssa))
 			llvmBlock := b.blockInfo[block.Preds[i].Index].exit
 			phi.llvm.AddIncoming([]llvm.Value{llvmVal}, []llvm.BasicBlock{llvmBlock})
 		}
@@ -1453,9 +1439,6 @@ func (b *builder) createFunction() {
 	if b.NeedsStackObjects {
 		// Track phi nodes.
 		for _, phi := range b.phis {
-			if b.isOversizedAggregate(phi.ssa.Type()) {
-				continue
-			}
 			insertPoint := llvm.NextInstruction(phi.llvm)
 			for !insertPoint.IsAPHINode().IsNil() {
 				insertPoint = llvm.NextInstruction(insertPoint)
@@ -1547,7 +1530,10 @@ func (b *builder) createInstruction(instr ssa.Instruction) {
 			b.diagnostics = append(b.diagnostics, err)
 			b.locals[instr] = llvm.Undef(b.getLLVMType(instr.Type()))
 		} else {
-			b.setValue(instr, value)
+			b.locals[instr] = value
+			if len(*instr.Referrers()) != 0 && b.NeedsStackObjects {
+				b.trackExpr(instr, value)
+			}
 		}
 	case *ssa.DebugRef:
 		// ignore
@@ -1567,8 +1553,10 @@ func (b *builder) createInstruction(instr ssa.Instruction) {
 		b.CreateBr(blockJump)
 	case *ssa.MapUpdate:
 		m := b.getValue(instr.Map, getPos(instr))
+		key := b.getValue(instr.Key, getPos(instr))
+		value := b.getValue(instr.Value, getPos(instr))
 		mapType := instr.Map.Type().Underlying().(*types.Map)
-		b.createMapUpdate(mapType.Key(), m, instr.Key, instr.Value, instr.Pos())
+		b.createMapUpdate(mapType.Key(), m, key, value, instr.Pos())
 	case *ssa.Panic:
 		value := b.getValue(instr.X, getPos(instr))
 		b.createRuntimeInvoke("_panic", []llvm.Value{value}, "")
@@ -1577,7 +1565,19 @@ func (b *builder) createInstruction(instr ssa.Instruction) {
 		if b.hasDeferFrame() {
 			b.createRuntimeCall("destroyDeferFrame", []llvm.Value{b.deferFrame}, "")
 		}
-		b.createReturn(instr.Results, getPos(instr))
+		if len(instr.Results) == 0 {
+			b.CreateRetVoid()
+		} else if len(instr.Results) == 1 {
+			b.CreateRet(b.getValue(instr.Results[0], getPos(instr)))
+		} else {
+			// Multiple return values. Put them all in a struct.
+			retVal := llvm.ConstNull(b.llvmFn.GlobalValueType().ReturnType())
+			for i, result := range instr.Results {
+				val := b.getValue(result, getPos(instr))
+				retVal = b.CreateInsertValue(retVal, val, i, "")
+			}
+			b.CreateRet(retVal)
+		}
 	case *ssa.RunDefers:
 		// Note where we're going to put the rundefers block
 		run := b.insertBasicBlock("rundefers.block")
@@ -1591,246 +1591,18 @@ func (b *builder) createInstruction(instr ssa.Instruction) {
 		b.createChanSend(instr)
 	case *ssa.Store:
 		llvmAddr := b.getValue(instr.Addr, getPos(instr))
+		llvmVal := b.getValue(instr.Val, getPos(instr))
 		b.createNilCheck(instr.Addr, llvmAddr, "store")
-		llvmType := b.getLLVMType(instr.Val.Type())
-		if b.targetData.TypeAllocSize(llvmType) == 0 {
+		if b.targetData.TypeAllocSize(llvmVal.Type()) == 0 {
 			// nothing to store
 			return
 		}
-		b.storeValue(llvmAddr, instr.Val)
+		b.CreateStore(llvmVal, llvmAddr)
 	default:
 		b.addError(instr.Pos(), "unknown instruction: "+instr.String())
 	}
 }

-func (b *builder) setValue(value ssa.Value, llvmValue llvm.Value) {
-	if b.isAggregateValue(value.Type()) && !llvmValue.IsNil() && llvmValue.Type().TypeKind() == llvm.PointerTypeKind {
-		b.indirectValues[value] = llvmValue
-		return
-	}
-	b.locals[value] = llvmValue
-	if len(*value.Referrers()) != 0 && b.NeedsStackObjects {
-		b.trackExpr(value, llvmValue)
-	}
-}
-
-func (b *builder) createReturn(results []ssa.Value, pos token.Pos) {
-	if len(results) == 0 {
-		b.CreateRetVoid()
-	} else if !b.indirectReturn.IsNil() {
-		if len(results) == 1 {
-			b.storeValue(b.indirectReturn, results[0])
-		} else {
-			returnType := b.getLLVMResultType(b.fn.Signature)
-			for i, result := range results {
-				fieldPtr := b.CreateStructGEP(returnType, b.indirectReturn, i, "")
-				b.storeValue(fieldPtr, result)
-			}
-		}
-		b.CreateRetVoid()
-	} else if len(results) == 1 {
-		b.CreateRet(b.getValue(results[0], pos))
-	} else {
-		result := llvm.ConstNull(b.llvmFn.GlobalValueType().ReturnType())
-		for i, value := range results {
-			result = b.CreateInsertValue(result, b.getValue(value, pos), i, "")
-		}
-		b.CreateRet(result)
-	}
-}
-
-func (b *builder) isOversizedAggregate(typ types.Type) bool {
-	if !b.isAggregateValue(typ) {
-		return false
-	}
-	return b.isIndirectAggregate(b.getLLVMType(typ))
-}
-
-func (b *builder) isAggregateValue(typ types.Type) bool {
-	if tuple, ok := typ.(*types.Tuple); ok {
-		for i := 0; i < tuple.Len(); i++ {
-			if !isLLVMValueType(tuple.At(i).Type()) {
-				return false
-			}
-		}
-	} else {
-		switch typ.Underlying().(type) {
-		case *types.Array, *types.Struct:
-		default:
-			return false
-		}
-		if !isLLVMValueType(typ) {
-			return false
-		}
-	}
-	return true
-}
-
-func (b *builder) getValuePointer(value ssa.Value) llvm.Value {
-	if ptr, ok := b.indirectValues[value]; ok {
-		return ptr
-	}
-	llvmType := b.getLLVMType(value.Type())
-	ptr := b.createIndirectStorage(llvmType, value.Name())
-	b.storeValue(ptr, value)
-	return ptr
-}
-
-func (b *builder) getCallArgument(value ssa.Value, exported bool) llvm.Value {
-	paramType := b.getLLVMType(value.Type())
-	if b.isIndirectParam(paramType, exported) {
-		return b.getValuePointer(value)
-	}
-	return b.getValue(value, getPos(value))
-}
-
-func (b *builder) createIndirectStorage(typ llvm.Type, name string) llvm.Value {
-	// Use runtime.alloc here so storage that escapes remains valid. The
-	// allocation optimizer moves bounded non-escaping storage to the stack.
-	size := llvm.ConstInt(b.uintptrType, b.targetData.TypeAllocSize(typ), false)
-	layout := b.createObjectLayout(typ, b.fn.Pos())
-	ptr := b.createAlloc(size, layout, b.targetData.ABITypeAlignment(typ), name)
-	if b.NeedsStackObjects {
-		b.trackPointer(ptr)
-	}
-	return ptr
-}
-
-func (b *builder) copyIndirectAggregate(dst, src llvm.Value, typ llvm.Type) {
-	size := llvm.ConstInt(b.uintptrType, b.targetData.TypeAllocSize(typ), false)
-	b.createMemCopy("memcpy", dst, src, size)
-}
-
-func (b *builder) storeValue(dst llvm.Value, value ssa.Value) {
-	typ := b.getLLVMType(value.Type())
-	if src, ok := b.indirectValues[value]; ok {
-		b.copyIndirectAggregate(dst, src, typ)
-	} else {
-		b.CreateStore(b.getValue(value, getPos(value)), dst)
-	}
-}
-
-func (b *builder) copyToIndirectStorage(src llvm.Value, typ llvm.Type, name string) llvm.Value {
-	dst := b.createIndirectStorage(typ, name)
-	b.copyIndirectAggregate(dst, src, typ)
-	return dst
-}
-
-func (b *builder) loadFromStorage(ptr llvm.Value, typ types.Type, name string) llvm.Value {
-	llvmType := b.getLLVMType(typ)
-	if b.isIndirectAggregate(llvmType) {
-		return b.copyToIndirectStorage(ptr, llvmType, name)
-	}
-	return b.CreateLoad(llvmType, ptr, name)
-}
-
-func (b *builder) getValueField(value ssa.Value, index int, resultType types.Type, name string) (llvm.Value, bool) {
-	if !b.isAggregateValue(value.Type()) {
-		return llvm.Value{}, false
-	}
-	valueType := b.getLLVMType(value.Type())
-	if _, indirect := b.indirectValues[value]; !indirect && !b.isIndirectAggregate(valueType) {
-		return llvm.Value{}, false
-	}
-	fieldPtr := b.CreateStructGEP(valueType, b.getValuePointer(value), index, "")
-	return b.loadFromStorage(fieldPtr, resultType, name), true
-}
-
-func (b *builder) zeroIndirectStorage(ptr llvm.Value, typ llvm.Type) {
-	memset := b.getMemsetFunc()
-	b.createCall(memset.GlobalValueType(), memset, []llvm.Value{
-		ptr,
-		llvm.ConstInt(b.ctx.Int8Type(), 0, false),
-		llvm.ConstInt(b.uintptrType, b.targetData.TypeAllocSize(typ), false),
-		llvm.ConstInt(b.ctx.Int1Type(), 0, false),
-	}, "")
-}
-
-type valueStorage struct {
-	ptr, size llvm.Value
-	temporary bool
-}
-
-func (b *builder) getValueStorage(value ssa.Value, name string) valueStorage {
-	typ := b.getLLVMType(value.Type())
-	if b.isIndirectAggregate(typ) {
-		return valueStorage{ptr: b.getValuePointer(value)}
-	}
-	ptr, size := b.createTemporaryAlloca(typ, name)
-	b.storeValue(ptr, value)
-	return valueStorage{ptr: ptr, size: size, temporary: true}
-}
-
-func (b *builder) endValueStorage(storage valueStorage) {
-	if storage.temporary {
-		b.emitLifetimeEnd(storage.ptr, storage.size)
-	}
-}
-
-type runtimeValueResult struct {
-	valueType  llvm.Type
-	resultType llvm.Type
-	result     llvm.Value
-	valuePtr   llvm.Value
-	valueSize  llvm.Value
-	temporary  bool
-	zero       bool
-	commaOk    bool
-}
-
-func (b *builder) createRuntimeValueResult(valueType llvm.Type, commaOk, zeroAsNull bool, name string) runtimeValueResult {
-	result := runtimeValueResult{
-		valueType:  valueType,
-		resultType: valueType,
-		valueSize:  llvm.ConstInt(b.uintptrType, b.targetData.TypeAllocSize(valueType), false),
-		commaOk:    commaOk,
-	}
-	if commaOk {
-		result.resultType = b.ctx.StructType([]llvm.Type{valueType, b.ctx.Int1Type()}, false)
-	}
-	if b.isIndirectAggregate(result.resultType) {
-		result.result = b.createIndirectStorage(result.resultType, name+".result")
-		result.valuePtr = result.result
-		if commaOk {
-			result.valuePtr = b.CreateStructGEP(result.resultType, result.result, 0, "")
-		}
-		return result
-	}
-	if zeroAsNull && b.targetData.TypeAllocSize(valueType) == 0 {
-		result.valuePtr = llvm.ConstNull(b.dataPtrType)
-		result.zero = true
-		return result
-	}
-	result.valuePtr, result.valueSize = b.createTemporaryAlloca(valueType, name+".value")
-	result.temporary = true
-	return result
-}
-
-func (r runtimeValueResult) finish(b *builder, commaOk llvm.Value, name string) llvm.Value {
-	if !r.result.IsNil() {
-		if r.commaOk {
-			b.CreateStore(commaOk, b.CreateStructGEP(r.resultType, r.result, 1, ""))
-		}
-		return r.result
-	}
-
-	var value llvm.Value
-	if r.zero {
-		value = llvm.ConstNull(r.valueType)
-	} else {
-		value = b.CreateLoad(r.valueType, r.valuePtr, name)
-	}
-	if r.temporary {
-		b.emitLifetimeEnd(r.valuePtr, r.valueSize)
-	}
-	if !r.commaOk {
-		return value
-	}
-	result := llvm.Undef(r.resultType)
-	result = b.CreateInsertValue(result, value, 0, "")
-	return b.CreateInsertValue(result, commaOk, 1, "")
-}
-
 // createBuiltin lowers a builtin Go function (append, close, delete, etc.) to
 // LLVM IR. It uses runtime calls for some builtins.
 func (b *builder) createBuiltin(argTypes []types.Type, argValues []llvm.Value, callName string, pos token.Pos) (llvm.Value, error) {
@@ -2216,7 +1988,7 @@ func (b *builder) createFunctionCall(instr *ssa.CallCommon) (llvm.Value, error)
 	if fn := instr.StaticCallee(); fn != nil {
 		// Direct function call, either to a named or anonymous (directly
 		// applied) function call. If it is anonymous, it may be a closure.
-		name := b.getFunctionInfo(fn).linkName
+		name := fn.RelString(nil)
 		switch {
 		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)
@@ -2265,10 +2037,14 @@ func (b *builder) createFunctionCall(instr *ssa.CallCommon) (llvm.Value, error)
 		}
 	}

+	var params []llvm.Value
+	for _, param := range instr.Args {
+		params = append(params, b.getValue(param, getPos(instr)))
+	}
+
 	// Try to call the function directly for trivially static calls.
 	var callee, context llvm.Value
 	var calleeType llvm.Type
-	var invokeTypecode, invokeReceiver llvm.Value
 	exported := false
 	if fn := instr.StaticCallee(); fn != nil {
 		calleeType, callee = b.getFunction(fn)
@@ -2298,18 +2074,19 @@ func (b *builder) createFunctionCall(instr *ssa.CallCommon) (llvm.Value, error)
 		exported = info.exported
 	} else if call, ok := instr.Value.(*ssa.Builtin); ok {
 		// Builtin function (append, close, delete, etc.).)
-		var params []llvm.Value
 		var argTypes []types.Type
 		for _, arg := range instr.Args {
 			argTypes = append(argTypes, arg.Type())
-			params = append(params, b.getValue(arg, getPos(instr)))
 		}
 		return b.createBuiltin(argTypes, params, call.Name(), instr.Pos())
 	} else if instr.IsInvoke() {
 		// Interface method call (aka invoke call).
 		itf := b.getValue(instr.Value, getPos(instr)) // interface value (runtime._interface)
-		invokeTypecode = b.CreateExtractValue(itf, 0, "invoke.func.typecode")
-		invokeReceiver = b.CreateExtractValue(itf, 1, "invoke.func.value")
+		typecode := b.CreateExtractValue(itf, 0, "invoke.func.typecode")
+		value := b.CreateExtractValue(itf, 1, "invoke.func.value") // receiver
+		// Prefix the params with receiver value and suffix with typecode.
+		params = append([]llvm.Value{value}, params...)
+		params = append(params, typecode)
 		callee = b.getInvokeFunction(instr)
 		calleeType = callee.GlobalValueType()
 		context = llvm.Undef(b.dataPtrType)
@@ -2323,23 +2100,7 @@ func (b *builder) createFunctionCall(instr *ssa.CallCommon) (llvm.Value, error)
 		b.createNilCheck(instr.Value, callee, "fpcall")
 	}

-	var params []llvm.Value
-	for _, param := range instr.Args {
-		params = append(params, b.getCallArgument(param, exported))
-	}
-	if instr.IsInvoke() {
-		params = append([]llvm.Value{invokeReceiver}, params...)
-		params = append(params, invokeTypecode)
-	}
-
 	if !exported {
-		if resultType, indirectResult := b.hasIndirectResult(instr.Signature()); indirectResult {
-			result := b.createIndirectStorage(resultType, "call.result")
-			params = append([]llvm.Value{result}, params...)
-			params = append(params, context)
-			b.createInvoke(calleeType, callee, params, "")
-			return result, nil
-		}
 		// This function takes a context parameter.
 		// Add it to the end of the parameter list.
 		params = append(params, context)
@@ -2378,9 +2139,6 @@ func (b *builder) getValue(expr ssa.Value, pos token.Pos) llvm.Value {
 		return value
 	default:
 		// other (local) SSA value
-		if value, ok := b.indirectValues[expr]; ok {
-			return b.CreateLoad(b.getLLVMType(expr.Type()), value, "")
-		}
 		if value, ok := b.locals[expr]; ok {
 			return value
 		} else {
@@ -2405,10 +2163,13 @@ func (c *compilerContext) maxSliceSize(elementType llvm.Type) uint64 {
 	if elementSize == 0 {
 		elementSize = 1
 	}
-	maxSize := min(
-		// len(slice) is an int. Make sure the length remains small enough to fit in
-		// an int.
-		maxPointerValue/elementSize, maxIntegerValue)
+	maxSize := maxPointerValue / elementSize
+
+	// len(slice) is an int. Make sure the length remains small enough to fit in
+	// an int.
+	if maxSize > maxIntegerValue {
+		maxSize = maxIntegerValue
+	}

 	return maxSize
 }
@@ -2463,15 +2224,8 @@ func (b *builder) createExpr(expr ssa.Value) (llvm.Value, error) {
 		// This instruction changes the type, but the underlying value remains
 		// the same. This is often a no-op, but sometimes we have to change the
 		// LLVM type as well.
-		llvmType := b.getLLVMType(expr.Type())
-		if b.isIndirectAggregate(llvmType) {
-			sourceType := b.getLLVMType(expr.X.Type())
-			if !b.isIndirectAggregate(sourceType) || b.targetData.TypeAllocSize(sourceType) != b.targetData.TypeAllocSize(llvmType) {
-				return llvm.Value{}, errors.New("todo: indirect aggregate ChangeType with different layout")
-			}
-			return b.getValuePointer(expr.X), nil
-		}
 		x := b.getValue(expr.X, getPos(expr))
+		llvmType := b.getLLVMType(expr.Type())
 		if x.Type() == llvmType {
 			// Different Go type but same LLVM type (for example, named int).
 			// This is the common case.
@@ -2501,15 +2255,9 @@ func (b *builder) createExpr(expr ssa.Value) (llvm.Value, error) {
 		if _, ok := expr.Tuple.(*ssa.Select); ok {
 			return b.getChanSelectResult(expr), nil
 		}
-		if value, ok := b.getValueField(expr.Tuple, expr.Index, expr.Type(), expr.Name()); ok {
-			return value, nil
-		}
 		value := b.getValue(expr.Tuple, getPos(expr))
 		return b.CreateExtractValue(value, expr.Index, ""), nil
 	case *ssa.Field:
-		if value, ok := b.getValueField(expr.X, expr.Field, expr.Type(), expr.Name()); ok {
-			return value, nil
-		}
 		value := b.getValue(expr.X, getPos(expr))
 		result := b.CreateExtractValue(value, expr.Field, "")
 		return result, nil
@@ -2532,11 +2280,11 @@ func (b *builder) createExpr(expr ssa.Value) (llvm.Value, error) {
 	case *ssa.Global:
 		panic("global is not an expression")
 	case *ssa.Index:
+		collection := b.getValue(expr.X, getPos(expr))
 		index := b.getValue(expr.Index, getPos(expr))

 		switch xType := expr.X.Type().Underlying().(type) {
 		case *types.Basic: // extract byte from string
-			collection := b.getValue(expr.X, getPos(expr))
 			// Value type must be a string, which is a basic type.
 			if xType.Info()&types.IsString == 0 {
 				panic("lookup on non-string?")
@@ -2570,12 +2318,13 @@ func (b *builder) createExpr(expr ssa.Value) (llvm.Value, error) {

 			// Can't load directly from array (as index is non-constant), so
 			// have to do it using an alloca+gep+load.
-			arrayType := b.getLLVMType(expr.X.Type())
-			storage := b.getValueStorage(expr.X, "index.alloca")
+			arrayType := collection.Type()
+			alloca, allocaSize := b.createTemporaryAlloca(arrayType, "index.alloca")
+			b.CreateStore(collection, alloca)
 			zero := llvm.ConstInt(b.ctx.Int32Type(), 0, false)
-			ptr := b.CreateInBoundsGEP(arrayType, storage.ptr, []llvm.Value{zero, index}, "index.gep")
-			result := b.loadFromStorage(ptr, expr.Type(), "index.load")
-			b.endValueStorage(storage)
+			ptr := b.CreateInBoundsGEP(arrayType, alloca, []llvm.Value{zero, index}, "index.gep")
+			result := b.CreateLoad(arrayType.ElementType(), ptr, "index.load")
+			b.emitLifetimeEnd(alloca, allocaSize)
 			return result, nil
 		default:
 			panic("unknown *ssa.Index type")
@@ -2634,21 +2383,17 @@ func (b *builder) createExpr(expr ssa.Value) (llvm.Value, error) {
 		}
 	case *ssa.Lookup: // map lookup
 		value := b.getValue(expr.X, getPos(expr))
+		index := b.getValue(expr.Index, getPos(expr))
 		valueType := expr.Type()
 		if expr.CommaOk {
 			valueType = valueType.(*types.Tuple).At(0).Type()
 		}
-		return b.createMapLookup(expr.X.Type().Underlying().(*types.Map).Key(), valueType, value, expr.Index, expr.CommaOk, expr.Pos())
+		return b.createMapLookup(expr.X.Type().Underlying().(*types.Map).Key(), valueType, value, index, expr.CommaOk, expr.Pos())
 	case *ssa.MakeChan:
 		return b.createMakeChan(expr), nil
 	case *ssa.MakeClosure:
 		return b.parseMakeClosure(expr)
 	case *ssa.MakeInterface:
-		if b.isOversizedAggregate(expr.X.Type()) {
-			typ := b.getLLVMType(expr.X.Type())
-			ptr := b.copyToIndirectStorage(b.getValuePointer(expr.X), typ, "interface.value")
-			return b.createMakeInterfaceFromPointer(ptr, expr.X.Type()), nil
-		}
 		val := b.getValue(expr.X, getPos(expr))
 		return b.createMakeInterface(val, expr.X.Type(), expr.Pos()), nil
 	case *ssa.MakeMap:
@@ -2682,7 +2427,8 @@ func (b *builder) createExpr(expr ssa.Value) (llvm.Value, error) {
 		}
 		sliceSize := b.CreateBinOp(llvm.Mul, elemSizeValue, sliceCapCast, "makeslice.cap")
 		layoutValue := b.createObjectLayout(llvmElemType, expr.Pos())
-		slicePtr := b.createAlloc(sliceSize, layoutValue, elemAlign, "makeslice.buf")
+		slicePtr := b.createAlloc(sliceSize, layoutValue, 0, "makeslice.buf")
+		slicePtr.AddCallSiteAttribute(0, b.ctx.CreateEnumAttribute(llvm.AttributeKindID("align"), uint64(elemAlign)))

 		// Extend or truncate if necessary. This is safe as we've already done
 		// the bounds check.
@@ -2715,8 +2461,7 @@ func (b *builder) createExpr(expr ssa.Value) (llvm.Value, error) {
 			return b.createMapIteratorNext(rangeVal, llvmRangeVal, it), nil
 		}
 	case *ssa.Phi:
-		phiType := b.storedParamType(b.getLLVMType(expr.Type()), false)
-		phi := b.CreatePHI(phiType, "")
+		phi := b.CreatePHI(b.getLLVMType(expr.Type()), "")
 		b.phis = append(b.phis, phiNode{expr, phi})
 		return phi, nil
 	case *ssa.Range:
@@ -3719,7 +3464,8 @@ func (b *builder) createUnOp(unop *ssa.UnOp) (llvm.Value, error) {
 			return fn, nil
 		} else {
 			b.createNilCheck(unop.X, x, "deref")
-			return b.loadFromStorage(x, unop.Type(), ""), nil
+			load := b.CreateLoad(valueType, x, "")
+			return load, nil
 		}
 	case token.XOR: // ^x, toggle all bits in integer
 		return b.CreateXor(x, llvm.ConstInt(x.Type(), ^uint64(0), false), ""), nil
@@ -4,7 +4,6 @@ import (
 	"flag"
 	"go/types"
 	"os"
-	"regexp"
 	"strconv"
 	"strings"
 	"testing"
@@ -52,7 +51,6 @@ func TestCompiler(t *testing.T) {
 		{"gc.go", "", ""},
 		{"zeromap.go", "", ""},
 		{"generics.go", "", ""},
-		{"large.go", "", ""},
 	}
 	if goMinor >= 20 {
 		tests = append(tests, testCase{"go1.20.go", "", ""})
@@ -60,9 +58,6 @@ func TestCompiler(t *testing.T) {
 	if goMinor >= 21 {
 		tests = append(tests, testCase{"go1.21.go", "", ""})
 	}
-	if goMinor >= 27 {
-		tests = append(tests, testCase{"go1.27.go", "", ""})
-	}

 	for _, tc := range tests {
 		name := tc.file
@@ -115,7 +110,7 @@ func TestCompiler(t *testing.T) {

 			// Update test if needed. Do not check the result.
 			if *flagUpdate {
-				err := os.WriteFile(outPath, []byte(normalizeIR(mod.String())), 0666)
+				err := os.WriteFile(outPath, []byte(mod.String()), 0666)
 				if err != nil {
 					t.Error("failed to write updated output file:", err)
 				}
@@ -127,137 +122,30 @@ func TestCompiler(t *testing.T) {
 				t.Fatal("failed to read golden file:", err)
 			}

-			if diff := diffIR(string(expected), mod.String()); diff != "" {
-				t.Errorf("output does not match expected output (re-run with -update to regenerate):\n%s", diff)
+			if !fuzzyEqualIR(mod.String(), string(expected)) {
+				t.Errorf("output does not match expected output:\n%s", mod.String())
 			}
 		})
 	}
 }

-func TestOptimizedLargeAggregateABI(t *testing.T) {
-	options := &compileopts.Options{Target: "wasm"}
-	mod, errs := testCompilePackage(t, options, "large-optimized.go")
-	if len(errs) != 0 {
-		for _, err := range errs {
-			t.Error(err)
-		}
-		return
+// fuzzyEqualIR returns true if the two LLVM IR strings passed in are roughly
+// equal. That means, only relevant lines are compared (excluding comments
+// etc.).
+func fuzzyEqualIR(s1, s2 string) bool {
+	lines1 := filterIrrelevantIRLines(strings.Split(s1, "\n"))
+	lines2 := filterIrrelevantIRLines(strings.Split(s2, "\n"))
+	if len(lines1) != len(lines2) {
+		return false
 	}
-	defer mod.Dispose()
-
-	passOptions := llvm.NewPassBuilderOptions()
-	defer passOptions.Dispose()
-	if err := mod.RunPasses("default<O2>", llvm.TargetMachine{}, passOptions); err != nil {
-		t.Fatal(err)
-	}
-
-	resultFn := mod.NamedFunction("main.makeLargeOptimizedValue")
-	if resultFn.IsNil() {
-		t.Fatal("missing function main.makeLargeOptimizedValue")
-	}
-	if resultType := resultFn.GlobalValueType().ReturnType(); resultType.TypeKind() != llvm.VoidTypeKind {
-		t.Errorf("large aggregate result was promoted to %s", resultType)
-	}
-
-	for _, name := range []string{
-		"main.makeLargeOptimizedValue",
-		"main.readLargeOptimizedValue",
-		"main.readMixedLargeOptimizedValue",
-	} {
-		fn := mod.NamedFunction(name)
-		if fn.IsNil() {
-			t.Fatalf("missing function %s", name)
-		}
-		if paramType := fn.GlobalValueType().ParamTypes()[0]; paramType.TypeKind() != llvm.PointerTypeKind {
-			t.Errorf("%s aggregate parameter was promoted to %s", name, paramType)
+	for i, line1 := range lines1 {
+		line2 := lines2[i]
+		if line1 != line2 {
+			return false
 		}
 	}
-}

-// normalizeIR canonicalizes LLVM-version-specific IR spellings for comparison
-// and when regenerating golden files.
-func normalizeIR(s string) string {
-	// Golden files are written using the pre-LLVM21 'nocapture' spelling,
-	// which LLVM printed before any co-occurring attribute such as
-	// 'readonly' (e.g. "ptr nocapture readonly"). LLVM 21+ prints the
-	// equivalent 'captures(none)' instead, and after such attributes (e.g.
-	// "ptr readonly captures(none)"). Normalize both name and position back
-	// to the old spelling.
-	s = normalizeCapturesAttr(s)
-
-	// LLVM 21+ also added an explicit 'nocreateundeforpoison' attribute to
-	// certain intrinsic declarations (e.g. llvm.umin) that were implicitly
-	// assumed not to create undef/poison before. It's unrelated to the
-	// behavior under test, so ignore it for comparison.
-	s = strings.ReplaceAll(s, "nocreateundeforpoison ", "")
-
-	// LLVM 22 dropped the (redundant) i64 size argument from
-	// llvm.lifetime.start/end. Normalize away that argument so golden files
-	// written against the two-argument form still match.
-	s = lifetimeSizeArgRe.ReplaceAllString(s, "$1")
-
-	return s
-}
-
-// diffIR compares two LLVM IR strings, ignoring irrelevant lines (comments,
-// empty lines, etc.) and normalizing LLVM-version-specific spellings via
-// normalizeIR. It returns "" when they are equal. Otherwise it returns a
-// compact diff of only the region that differs: the common prefix and suffix
-// are trimmed, then the differing expected lines (prefixed "-") are shown
-// followed by the differing actual lines (prefixed "+").
-func diffIR(expected, actual string) string {
-	exp := filterIrrelevantIRLines(strings.Split(normalizeIR(expected), "\n"))
-	act := filterIrrelevantIRLines(strings.Split(normalizeIR(actual), "\n"))
-
-	// Trim the common prefix.
-	start := 0
-	for start < len(exp) && start < len(act) && exp[start] == act[start] {
-		start++
-	}
-	// Trim the common suffix.
-	e, a := len(exp), len(act)
-	for e > start && a > start && exp[e-1] == act[a-1] {
-		e--
-		a--
-	}
-	if start == e && start == a {
-		return "" // equal
-	}
-
-	var b strings.Builder
-	b.WriteString("first difference at relevant line ")
-	b.WriteString(strconv.Itoa(start + 1))
-	b.WriteString(":\n")
-	for _, line := range exp[start:e] {
-		b.WriteString("- ")
-		b.WriteString(line)
-		b.WriteByte('\n')
-	}
-	for _, line := range act[start:a] {
-		b.WriteString("+ ")
-		b.WriteString(line)
-		b.WriteByte('\n')
-	}
-	return b.String()
-}
-
-// capturesNoneAttrRe matches a co-occurring attribute directly followed by
-// 'captures(none)', which is how LLVM 21+ orders these two attributes when
-// printing IR (the pre-LLVM21 'nocapture' attribute printed the other way
-// around).
-var capturesNoneAttrRe = regexp.MustCompile(`\b(readonly|readnone|writeonly|nonnull)\s+captures\(none\)`)
-
-// lifetimeSizeArgRe matches the i64 size argument of an
-// llvm.lifetime.start/end call or declaration, which LLVM 22 removed.
-var lifetimeSizeArgRe = regexp.MustCompile(`(@llvm\.lifetime\.(?:start|end)\.p0\()i64(?: immarg| \d+), `)
-
-// normalizeCapturesAttr rewrites LLVM 21+'s 'captures(none)' attribute back
-// to the pre-LLVM21 'nocapture' spelling and position, so golden IR files
-// written against LLVM <21 keep matching.
-func normalizeCapturesAttr(s string) string {
-	s = capturesNoneAttrRe.ReplaceAllString(s, "nocapture $1")
-	s = strings.ReplaceAll(s, "captures(none)", "nocapture")
-	return s
+	return true
 }

 // filterIrrelevantIRLines removes lines from the input slice of strings that
@@ -300,9 +188,9 @@ func TestCompilerErrors(t *testing.T) {
 		t.Error(err)
 	}
 	errorsFileString := strings.ReplaceAll(string(errorsFile), "\r\n", "\n")
-	for line := range strings.SplitSeq(errorsFileString, "\n") {
-		if after, ok := strings.CutPrefix(line, "// ERROR: "); ok {
-			expectedErrors = append(expectedErrors, after)
+	for _, line := range strings.Split(errorsFileString, "\n") {
+		if strings.HasPrefix(line, "// ERROR: ") {
+			expectedErrors = append(expectedErrors, strings.TrimPrefix(line, "// ERROR: "))
 		}
 	}

@@ -326,49 +214,6 @@ func TestCompilerErrors(t *testing.T) {
 	}
 }

-func TestAggregateValueCount(t *testing.T) {
-	t.Parallel()
-
-	ctx := llvm.NewContext()
-	defer ctx.Dispose()
-
-	byteType := ctx.Int8Type()
-	tests := []struct {
-		name     string
-		typ      llvm.Type
-		count    uint64
-		exceeded bool
-	}{
-		{"empty", llvm.ArrayType(byteType, 0), 0, false},
-		{"limit", llvm.ArrayType(byteType, 1024), 1024, false},
-		{"over limit", llvm.ArrayType(byteType, 1025), 0, true},
-		{"combined limit", ctx.StructType([]llvm.Type{
-			llvm.ArrayType(byteType, 512),
-			llvm.ArrayType(byteType, 512),
-		}, false), 1024, false},
-		{"combined over limit", ctx.StructType([]llvm.Type{
-			llvm.ArrayType(byteType, 1000),
-			llvm.ArrayType(byteType, 1000),
-		}, false), 0, true},
-		{"comma-ok over limit", ctx.StructType([]llvm.Type{
-			llvm.ArrayType(byteType, 1024),
-			ctx.Int1Type(),
-		}, false), 0, true},
-	}
-
-	for _, test := range tests {
-		t.Run(test.name, func(t *testing.T) {
-			count, exceeded := aggregateValueCount(test.typ, 0)
-			if exceeded != test.exceeded {
-				t.Errorf("expected exceeded=%t, got %t", test.exceeded, exceeded)
-			}
-			if !exceeded && count != test.count {
-				t.Errorf("expected count=%d, got %d", test.count, count)
-			}
-		})
-	}
-}
-
 // Build a package given a number of compiler options and a file.
 func testCompilePackage(t *testing.T, options *compileopts.Options, file string) (llvm.Module, []error) {
 	target, err := compileopts.LoadTarget(options)
@@ -413,7 +258,5 @@ func testCompilePackage(t *testing.T, options *compileopts.Options, file string)
 	// Compile AST to IR.
 	program := lprogram.LoadSSA()
 	pkg := lprogram.MainPkg()
-	ssaPkg := program.Package(pkg.Pkg)
-	ssaPkg.Build()
-	return CompilePackage(file, pkg, ssaPkg, machine, compilerConfig, false)
+	return CompilePackage(file, pkg, program.Package(pkg.Pkg), machine, compilerConfig, false)
 }
@@ -32,7 +32,7 @@ func (b *builder) supportsRecover() bool {
 		// proposal of WebAssembly:
 		// https://github.com/WebAssembly/exception-handling
 		return false
-	case "xtensa":
+	case "riscv64", "xtensa":
 		// TODO: add support for these architectures
 		return false
 	default:
@@ -116,8 +116,8 @@ func (b *builder) createLandingPad() {
 func (b *builder) createCheckpoint(ptr llvm.Value) llvm.Value {
 	// Construct inline assembly equivalents of setjmp.
 	// The assembly works as follows:
-	//   * Registers are either clobbered or, on 386, saved for longjmp to
-	//     restore if the ABI requires them to survive calls.
+	//   * 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
@@ -130,12 +130,8 @@ func (b *builder) createCheckpoint(ptr llvm.Value) llvm.Value {
 		asmString = `
 xorl %eax, %eax
 movl $$1f, 4(%ebx)
-movl %ebx, 8(%ebx)
-movl %esi, 12(%ebx)
-movl %edi, 16(%ebx)
-movl %ebp, 20(%ebx)
 1:`
-		constraints = "={eax},{ebx},~{ecx},~{edx},~{xmm0},~{xmm1},~{xmm2},~{xmm3},~{xmm4},~{xmm5},~{xmm6},~{xmm7},~{fpsr},~{fpcr},~{flags},~{dirflag},~{memory}"
+		constraints = "={eax},{ebx},~{ebx},~{ecx},~{edx},~{esi},~{edi},~{ebp},~{xmm0},~{xmm1},~{xmm2},~{xmm3},~{xmm4},~{xmm5},~{xmm6},~{xmm7},~{fpsr},~{fpcr},~{flags},~{dirflag},~{memory}"
 		// This doesn't include the floating point stack because TinyGo uses
 		// newer floating point instructions.
 	case "x86_64":
@@ -217,20 +213,12 @@ sw $$ra, 4($$5)
 			// So only add them when using hardfloat.
 			constraints += ",~{$f0},~{$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}"
 		}
-	case "riscv32", "riscv64":
-		if b.archFamily() == "riscv32" {
-			asmString = `
+	case "riscv32":
+		asmString = `
 la a2, 1f
 sw a2, 4(a1)
 li a0, 0
 1:`
-		} else {
-			asmString = `
-la a2, 1f
-sd a2, 8(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().
@@ -367,44 +355,6 @@ type tarjanNode struct {
 	cyclic bool
 }

-type llvmValueList struct {
-	values []llvm.Value
-	types  []llvm.Type
-}
-
-func newLLVMValueList(values ...llvm.Value) llvmValueList {
-	var list llvmValueList
-	list.append(values...)
-	return list
-}
-
-func (l *llvmValueList) append(values ...llvm.Value) {
-	for _, value := range values {
-		l.values = append(l.values, value)
-		l.types = append(l.types, value.Type())
-	}
-}
-
-func (l *llvmValueList) appendSSAValues(values []ssa.Value, lower func(ssa.Value) llvm.Value) {
-	for _, value := range values {
-		l.append(lower(value))
-	}
-}
-
-func (b *builder) loadDeferredCallParams(structType llvm.Type, ptr llvm.Value) []llvm.Value {
-	fieldTypes := structType.StructElementTypes()
-	values := make([]llvm.Value, 0, len(fieldTypes)-2)
-	zero := llvm.ConstInt(b.ctx.Int32Type(), 0, false)
-	for i := 2; i < len(fieldTypes); i++ {
-		fieldPtr := b.CreateInBoundsGEP(structType, ptr, []llvm.Value{
-			zero,
-			llvm.ConstInt(b.ctx.Int32Type(), uint64(i), false),
-		}, "gep")
-		values = append(values, b.CreateLoad(fieldTypes[i], fieldPtr, "param"))
-	}
-	return values
-}
-
 // createDefer emits a single defer instruction, to be run when this function
 // returns.
 func (b *builder) createDefer(instr *ssa.Defer) {
@@ -412,28 +362,31 @@ func (b *builder) createDefer(instr *ssa.Defer) {
 	// make a linked list.
 	next := b.CreateLoad(b.dataPtrType, b.deferPtr, "defer.next")

-	var values llvmValueList
-	lowerArgument := func(value ssa.Value) llvm.Value {
-		return b.getCallArgument(value, false)
-	}
+	var values []llvm.Value
+	valueTypes := []llvm.Type{b.uintptrType, next.Type()}
 	if instr.Call.IsInvoke() {
 		// Method call on an interface.

 		// Get callback type number.
-		key := b.getInvokeFunctionName(&instr.Call)
-		if _, ok := b.deferInvokeFuncs[key]; !ok {
-			b.deferInvokeFuncs[key] = len(b.allDeferFuncs)
+		methodName := instr.Call.Method.FullName()
+		if _, ok := b.deferInvokeFuncs[methodName]; !ok {
+			b.deferInvokeFuncs[methodName] = len(b.allDeferFuncs)
 			b.allDeferFuncs = append(b.allDeferFuncs, &instr.Call)
 		}
-		callback := llvm.ConstInt(b.uintptrType, uint64(b.deferInvokeFuncs[key]), false)
+		callback := llvm.ConstInt(b.uintptrType, uint64(b.deferInvokeFuncs[methodName]), false)

 		// Collect all values to be put in the struct (starting with
 		// runtime._defer fields, followed by the call parameters).
 		itf := b.getValue(instr.Call.Value, getPos(instr)) // interface
 		typecode := b.CreateExtractValue(itf, 0, "invoke.func.typecode")
 		receiverValue := b.CreateExtractValue(itf, 1, "invoke.func.receiver")
-		values = newLLVMValueList(callback, next, typecode, receiverValue)
-		values.appendSSAValues(instr.Call.Args, lowerArgument)
+		values = []llvm.Value{callback, next, typecode, receiverValue}
+		valueTypes = append(valueTypes, b.dataPtrType, b.dataPtrType)
+		for _, arg := range instr.Call.Args {
+			val := b.getValue(arg, getPos(instr))
+			values = append(values, val)
+			valueTypes = append(valueTypes, val.Type())
+		}

 	} else if callee, ok := instr.Call.Value.(*ssa.Function); ok {
 		// Regular function call.
@@ -445,11 +398,12 @@ func (b *builder) createDefer(instr *ssa.Defer) {

 		// Collect all values to be put in the struct (starting with
 		// runtime._defer fields).
-		values = newLLVMValueList(callback, next)
-		exported := b.getFunctionInfo(callee).exported
-		values.appendSSAValues(instr.Call.Args, func(value ssa.Value) llvm.Value {
-			return b.getCallArgument(value, exported)
-		})
+		values = []llvm.Value{callback, next}
+		for _, param := range instr.Call.Args {
+			llvmParam := b.getValue(param, getPos(instr))
+			values = append(values, llvmParam)
+			valueTypes = append(valueTypes, llvmParam.Type())
+		}

 	} else if makeClosure, ok := instr.Call.Value.(*ssa.MakeClosure); ok {
 		// Immediately applied function literal with free variables.
@@ -472,9 +426,14 @@ func (b *builder) createDefer(instr *ssa.Defer) {
 		// Collect all values to be put in the struct (starting with
 		// runtime._defer fields, followed by all parameters including the
 		// context pointer).
-		values = newLLVMValueList(callback, next)
-		values.appendSSAValues(instr.Call.Args, lowerArgument)
-		values.append(context)
+		values = []llvm.Value{callback, next}
+		for _, param := range instr.Call.Args {
+			llvmParam := b.getValue(param, getPos(instr))
+			values = append(values, llvmParam)
+			valueTypes = append(valueTypes, llvmParam.Type())
+		}
+		values = append(values, context)
+		valueTypes = append(valueTypes, context.Type())

 	} else if builtin, ok := instr.Call.Value.(*ssa.Builtin); ok {
 		var argTypes []types.Type
@@ -497,8 +456,11 @@ func (b *builder) createDefer(instr *ssa.Defer) {

 		// Collect all values to be put in the struct (starting with
 		// runtime._defer fields).
-		values = newLLVMValueList(callback, next)
-		values.append(argValues...)
+		values = []llvm.Value{callback, next}
+		for _, param := range argValues {
+			values = append(values, param)
+			valueTypes = append(valueTypes, param.Type())
+		}

 	} else {
 		funcValue := b.getValue(instr.Call.Value, getPos(instr))
@@ -513,15 +475,20 @@ func (b *builder) createDefer(instr *ssa.Defer) {
 		// Collect all values to be put in the struct (starting with
 		// runtime._defer fields, followed by all parameters including the
 		// context pointer).
-		values = newLLVMValueList(callback, next, funcValue)
-		values.appendSSAValues(instr.Call.Args, lowerArgument)
+		values = []llvm.Value{callback, next, funcValue}
+		valueTypes = append(valueTypes, funcValue.Type())
+		for _, param := range instr.Call.Args {
+			llvmParam := b.getValue(param, getPos(instr))
+			values = append(values, llvmParam)
+			valueTypes = append(valueTypes, llvmParam.Type())
+		}
 	}

 	// Make a struct out of the collected values to put in the deferred call
 	// struct.
-	deferredCallType := b.ctx.StructType(values.types, false)
+	deferredCallType := b.ctx.StructType(valueTypes, false)
 	deferredCall := llvm.ConstNull(deferredCallType)
-	for i, value := range values.values {
+	for i, value := range values {
 		deferredCall = b.CreateInsertValue(deferredCall, value, i, "")
 	}

@@ -537,9 +504,8 @@ func (b *builder) createDefer(instr *ssa.Defer) {
 		// This may be hit a variable number of times, so use a heap allocation.
 		size := b.targetData.TypeAllocSize(deferredCallType)
 		sizeValue := llvm.ConstInt(b.uintptrType, size, false)
-		layoutValue := b.createObjectLayout(deferredCallType, instr.Pos())
-		align := b.targetData.ABITypeAlignment(deferredCallType)
-		alloca = b.createAlloc(sizeValue, layoutValue, align, "defer.alloc.call")
+		nilPtr := llvm.ConstNull(b.dataPtrType)
+		alloca = b.createAlloc(sizeValue, nilPtr, 0, "defer.alloc.call")
 	}
 	if b.NeedsStackObjects {
 		b.trackPointer(alloca)
@@ -623,11 +589,19 @@ func (b *builder) createRunDefers() {
 				valueTypes = append(valueTypes, b.dataPtrType, b.dataPtrType)
 			}

-			valueTypes = b.appendStoredValueTypes(valueTypes, callback.Args, false)
+			for _, arg := range callback.Args {
+				valueTypes = append(valueTypes, b.getLLVMType(arg.Type()))
+			}

 			// Extract the params from the struct (including receiver).
+			forwardParams := []llvm.Value{}
+			zero := llvm.ConstInt(b.ctx.Int32Type(), 0, false)
 			deferredCallType := b.ctx.StructType(valueTypes, false)
-			forwardParams := b.loadDeferredCallParams(deferredCallType, deferData)
+			for i := 2; i < len(valueTypes); i++ {
+				gep := b.CreateInBoundsGEP(deferredCallType, deferData, []llvm.Value{zero, llvm.ConstInt(b.ctx.Int32Type(), uint64(i), false)}, "gep")
+				forwardParam := b.CreateLoad(valueTypes[i], gep, "param")
+				forwardParams = append(forwardParams, forwardParam)
+			}

 			var fnPtr llvm.Value
 			var fnType llvm.Type
@@ -656,7 +630,6 @@ func (b *builder) createRunDefers() {
 				// with a strict calling convention.
 				forwardParams = append(forwardParams, llvm.Undef(b.dataPtrType))
 			}
-			forwardParams = b.prependIndirectResult(callback.Signature(), false, forwardParams, "defer.result")

 			b.createCall(fnType, fnPtr, forwardParams, "")

@@ -665,21 +638,27 @@ func (b *builder) createRunDefers() {

 			// Get the real defer struct type and cast to it.
 			valueTypes := []llvm.Type{b.uintptrType, b.dataPtrType}
-			exported := b.getFunctionInfo(callback).exported
-			valueTypes = b.appendStoredParamTypes(valueTypes, getParams(callback.Signature), exported)
+			for _, param := range getParams(callback.Signature) {
+				valueTypes = append(valueTypes, b.getLLVMType(param.Type()))
+			}
 			deferredCallType := b.ctx.StructType(valueTypes, false)

 			// Extract the params from the struct.
-			forwardParams := b.loadDeferredCallParams(deferredCallType, deferData)
+			forwardParams := []llvm.Value{}
+			zero := llvm.ConstInt(b.ctx.Int32Type(), 0, false)
+			for i := range getParams(callback.Signature) {
+				gep := b.CreateInBoundsGEP(deferredCallType, deferData, []llvm.Value{zero, llvm.ConstInt(b.ctx.Int32Type(), uint64(i+2), false)}, "gep")
+				forwardParam := b.CreateLoad(valueTypes[i+2], gep, "param")
+				forwardParams = append(forwardParams, forwardParam)
+			}

 			// Plain TinyGo functions add some extra parameters to implement async functionality and function receivers.
 			// These parameters should not be supplied when calling into an external C/ASM function.
-			if !exported {
+			if !b.getFunctionInfo(callback).exported {
 				// Add the context parameter. We know it is ignored by the receiving
 				// function, but we have to pass one anyway.
 				forwardParams = append(forwardParams, llvm.Undef(b.dataPtrType))
 			}
-			forwardParams = b.prependIndirectResult(callback.Signature, exported, forwardParams, "defer.result")

 			// Call real function.
 			fnType, fn := b.getFunction(callback)
@@ -689,16 +668,24 @@ func (b *builder) createRunDefers() {
 			// Get the real defer struct type and cast to it.
 			fn := callback.Fn.(*ssa.Function)
 			valueTypes := []llvm.Type{b.uintptrType, b.dataPtrType}
-			valueTypes = b.appendStoredParamTypes(valueTypes, getParams(fn.Signature), false)
+			params := fn.Signature.Params()
+			for i := 0; i < params.Len(); i++ {
+				valueTypes = append(valueTypes, b.getLLVMType(params.At(i).Type()))
+			}
 			valueTypes = append(valueTypes, b.dataPtrType) // closure
 			deferredCallType := b.ctx.StructType(valueTypes, false)

 			// Extract the params from the struct.
-			forwardParams := b.loadDeferredCallParams(deferredCallType, deferData)
+			forwardParams := []llvm.Value{}
+			zero := llvm.ConstInt(b.ctx.Int32Type(), 0, false)
+			for i := 2; i < len(valueTypes); i++ {
+				gep := b.CreateInBoundsGEP(deferredCallType, deferData, []llvm.Value{zero, llvm.ConstInt(b.ctx.Int32Type(), uint64(i), false)}, "")
+				forwardParam := b.CreateLoad(valueTypes[i], gep, "param")
+				forwardParams = append(forwardParams, forwardParam)
+			}

 			// Call deferred function.
 			fnType, llvmFn := b.getFunction(fn)
-			forwardParams = b.prependIndirectResult(fn.Signature, false, forwardParams, "defer.result")
 			b.createCall(fnType, llvmFn, forwardParams, "")
 		case *ssa.Builtin:
 			db := b.deferBuiltinFuncs[callback]
@@ -708,14 +695,20 @@ func (b *builder) createRunDefers() {

 			//Get signature from call results
 			params := callback.Type().Underlying().(*types.Signature).Params()
-			for v := range params.Variables() {
-				valueTypes = append(valueTypes, b.getLLVMType(v.Type()))
+			for i := 0; i < params.Len(); i++ {
+				valueTypes = append(valueTypes, b.getLLVMType(params.At(i).Type()))
 			}

 			deferredCallType := b.ctx.StructType(valueTypes, false)

 			// Extract the params from the struct.
-			argValues := b.loadDeferredCallParams(deferredCallType, deferData)
+			var argValues []llvm.Value
+			zero := llvm.ConstInt(b.ctx.Int32Type(), 0, false)
+			for i := 0; i < params.Len(); i++ {
+				gep := b.CreateInBoundsGEP(deferredCallType, deferData, []llvm.Value{zero, llvm.ConstInt(b.ctx.Int32Type(), uint64(i+2), false)}, "gep")
+				forwardParam := b.CreateLoad(valueTypes[i+2], gep, "param")
+				argValues = append(argValues, forwardParam)
+			}

 			_, err := b.createBuiltin(db.argTypes, argValues, db.callName, db.pos)
 			if err != nil {
@@ -10,91 +10,6 @@ import (
 	"tinygo.org/x/go-llvm"
 )

-// LLVM recursively expands each struct field and array element in parameters
-// and results into separate values. It gets very slow with too many values, so
-// pass larger aggregates indirectly before LLVM expands them.
-const maxDirectAggregateValues = 1024
-
-func (c *compilerContext) getLLVMResultType(sig *types.Signature) llvm.Type {
-	switch sig.Results().Len() {
-	case 0:
-		return c.ctx.VoidType()
-	case 1:
-		return c.getLLVMType(sig.Results().At(0).Type())
-	default:
-		results := make([]llvm.Type, sig.Results().Len())
-		for i := range results {
-			results[i] = c.getLLVMType(sig.Results().At(i).Type())
-		}
-		return c.ctx.StructType(results, false)
-	}
-}
-
-func (c *compilerContext) hasIndirectResult(sig *types.Signature) (llvm.Type, bool) {
-	resultType := c.getLLVMResultType(sig)
-	return resultType, c.isIndirectAggregate(resultType)
-}
-
-func (c *compilerContext) isIndirectAggregate(typ llvm.Type) bool {
-	switch typ.TypeKind() {
-	case llvm.ArrayTypeKind, llvm.StructTypeKind:
-		_, exceeded := aggregateValueCount(typ, 0)
-		return exceeded
-	default:
-		return false
-	}
-}
-
-func aggregateValueCount(typ llvm.Type, count uint64) (uint64, bool) {
-	switch typ.TypeKind() {
-	case llvm.ArrayTypeKind:
-		length := uint64(typ.ArrayLength())
-		if length == 0 {
-			return count, false
-		}
-		elementCount, exceeded := aggregateValueCount(typ.ElementType(), 0)
-		if exceeded {
-			return count, true
-		}
-		if elementCount != 0 && length > (maxDirectAggregateValues-count)/elementCount {
-			return count, true
-		}
-		return count + length*elementCount, false
-	case llvm.StructTypeKind:
-		for _, field := range typ.StructElementTypes() {
-			var exceeded bool
-			count, exceeded = aggregateValueCount(field, count)
-			if exceeded {
-				return count, true
-			}
-		}
-		return count, false
-	default:
-		count++
-		return count, count > maxDirectAggregateValues
-	}
-}
-
-func isLLVMValueType(typ types.Type) bool {
-	switch typ := typ.Underlying().(type) {
-	case *types.Basic:
-		return typ.Kind() != types.Invalid
-	case *types.Array:
-		return isLLVMValueType(typ.Elem())
-	case *types.Struct:
-		for field := range typ.Fields() {
-			if !isLLVMValueType(field.Type()) {
-				return false
-			}
-		}
-		return true
-	case *types.Chan, *types.Interface, *types.Map, *types.Pointer, *types.Signature, *types.Slice:
-		return true
-	default:
-		return false
-	}
-}
-
 // createFuncValue creates a function value from a raw function pointer with no
 // context.
 func (b *builder) createFuncValue(funcPtr, context llvm.Value, sig *types.Signature) llvm.Value {
@@ -133,18 +48,28 @@ func (c *compilerContext) getFuncType(typ *types.Signature) llvm.Type {

 // getLLVMFunctionType returns a LLVM function type for a given signature.
 func (c *compilerContext) getLLVMFunctionType(typ *types.Signature) llvm.Type {
-	returnType, indirectResult := c.hasIndirectResult(typ)
+	// Get the return type.
+	var returnType llvm.Type
+	switch typ.Results().Len() {
+	case 0:
+		// No return values.
+		returnType = c.ctx.VoidType()
+	case 1:
+		// Just one return value.
+		returnType = c.getLLVMType(typ.Results().At(0).Type())
+	default:
+		// Multiple return values. Put them together in a struct.
+		// This appears to be the common way to handle multiple return values in
+		// LLVM.
+		members := make([]llvm.Type, typ.Results().Len())
+		for i := 0; i < typ.Results().Len(); i++ {
+			members[i] = c.getLLVMType(typ.Results().At(i).Type())
+		}
+		returnType = c.ctx.StructType(members, false)
+	}

 	// Get the parameter types.
 	var paramTypes []llvm.Type
-	if indirectResult {
-		// LLVM expands aggregate returns into scalar leaves before deciding
-		// whether to pass them indirectly, so a large IR return can exhaust
-		// memory. Returning void avoids that expansion and cannot be demoted
-		// again. Keep the result pointer first so the context remains last.
-		paramTypes = append(paramTypes, c.dataPtrType)
-		returnType = c.ctx.VoidType()
-	}
 	if typ.Recv() != nil {
 		recv := c.getLLVMType(typ.Recv().Type())
 		if recv.StructName() == "runtime._interface" {
@@ -156,8 +81,8 @@ func (c *compilerContext) getLLVMFunctionType(typ *types.Signature) llvm.Type {
 			paramTypes = append(paramTypes, info.llvmType)
 		}
 	}
-	for v := range typ.Params().Variables() {
-		subType := c.getLLVMType(v.Type())
+	for i := 0; i < typ.Params().Len(); i++ {
+		subType := c.getLLVMType(typ.Params().At(i).Type())
 		for _, info := range c.expandFormalParamType(subType, "", nil) {
 			paramTypes = append(paramTypes, info.llvmType)
 		}
@@ -187,7 +112,7 @@ func (b *builder) parseMakeClosure(expr *ssa.MakeClosure) (llvm.Value, error) {

 	// Store the bound variables in a single object, allocating it on the heap
 	// if necessary.
-	context := b.emitPointerPack(boundVars, expr.Pos())
+	context := b.emitPointerPack(boundVars)

 	// Create the closure.
 	_, fn := b.getFunction(f)
@@ -5,7 +5,6 @@ package compiler

 import (
 	"go/token"
-	"slices"

 	"golang.org/x/tools/go/ssa"
 	"tinygo.org/x/go-llvm"
@@ -29,10 +28,10 @@ func (b *builder) createAlloc(sizeValue, layoutValue llvm.Value, align int, comm

 	// Make the runtime call.
 	call := b.createRuntimeCall(allocFunc, []llvm.Value{sizeValue, layoutValue}, comment)
-	if align == 0 || align&(align-1) != 0 {
-		panic("invalid alignment")
+	if align != 0 {
+		// TODO: make sure all callsites set the correct alignment.
+		call.AddCallSiteAttribute(0, b.ctx.CreateEnumAttribute(llvm.AttributeKindID("align"), uint64(align)))
 	}
-	call.AddCallSiteAttribute(0, b.ctx.CreateEnumAttribute(llvm.AttributeKindID("align"), uint64(align)))

 	return call
 }
@@ -89,7 +88,7 @@ func (b *builder) trackValue(value llvm.Value) {
 			return
 		}
 		numElements := typ.StructElementTypesCount()
-		for i := range numElements {
+		for i := 0; i < numElements; i++ {
 			subValue := b.CreateExtractValue(value, i, "")
 			b.trackValue(subValue)
 		}
@@ -98,7 +97,7 @@ func (b *builder) trackValue(value llvm.Value) {
 			return
 		}
 		numElements := typ.ArrayLength()
-		for i := range numElements {
+		for i := 0; i < numElements; i++ {
 			subValue := b.CreateExtractValue(value, i, "")
 			b.trackValue(subValue)
 		}
@@ -119,7 +118,12 @@ func typeHasPointers(t llvm.Type) bool {
 	case llvm.PointerTypeKind:
 		return true
 	case llvm.StructTypeKind:
-		return slices.ContainsFunc(t.StructElementTypes(), typeHasPointers)
+		for _, subType := range t.StructElementTypes() {
+			if typeHasPointers(subType) {
+				return true
+			}
+		}
+		return false
 	case llvm.ArrayTypeKind:
 		if t.ArrayLength() == 0 {
 			return false
@@ -47,16 +47,20 @@ func (b *builder) createGo(instr *ssa.Go) {
 		return
 	}

+	// Get all function parameters to pass to the goroutine.
 	var params []llvm.Value
+	for _, param := range instr.Call.Args {
+		params = append(params, b.expandFormalParam(b.getValue(param, getPos(instr)))...)
+	}
+
 	var prefix string
 	var funcPtr llvm.Value
 	var funcType llvm.Type
-	var context llvm.Value
 	hasContext := false
-	exported := false
 	if callee := instr.Call.StaticCallee(); callee != nil {
 		// Static callee is known. This makes it easier to start a new
 		// goroutine.
+		var context llvm.Value
 		switch value := instr.Call.Value.(type) {
 		case *ssa.Function:
 			// Goroutine call is regular function call. No context is necessary.
@@ -69,10 +73,10 @@ func (b *builder) createGo(instr *ssa.Go) {
 			panic("StaticCallee returned an unexpected value")
 		}
 		if !context.IsNil() {
+			params = append(params, context) // context parameter
 			hasContext = true
 		}
 		funcType, funcPtr = b.getFunction(callee)
-		exported = b.getFunctionInfo(callee).exported
 	} else if instr.Call.IsInvoke() {
 		// This is a method call on an interface value.
 		itf := b.getValue(instr.Call.Value, getPos(instr))
@@ -80,32 +84,23 @@ func (b *builder) createGo(instr *ssa.Go) {
 		itfValue := b.CreateExtractValue(itf, 1, "")
 		funcPtr = b.getInvokeFunction(&instr.Call)
 		funcType = funcPtr.GlobalValueType()
-		params = append(params, itfValue)
-		context = itfTypeCode
+		params = append([]llvm.Value{itfValue}, params...) // start with receiver
+		params = append(params, itfTypeCode)               // end with typecode
 	} else {
 		// This is a function pointer.
 		// At the moment, two extra params are passed to the newly started
 		// goroutine:
 		//   * The function context, for closures.
 		//   * The function pointer (for tasks).
+		var context llvm.Value
 		funcPtr, context = b.decodeFuncValue(b.getValue(instr.Call.Value, getPos(instr)))
 		funcType = b.getLLVMFunctionType(instr.Call.Value.Type().Underlying().(*types.Signature))
+		params = append(params, context, funcPtr)
 		hasContext = true
-		prefix = b.getFunctionInfo(b.fn).linkName
+		prefix = b.fn.RelString(nil)
 	}

-	for _, param := range instr.Call.Args {
-		params = append(params, b.getGoroutineCallArgument(param, exported)...)
-	}
-	if !context.IsNil() {
-		params = append(params, context)
-	}
-	if hasContext && instr.Call.StaticCallee() == nil {
-		params = append(params, funcPtr)
-	}
-	params = b.prependIndirectResult(instr.Call.Signature(), exported, params, "go.result")
-
-	paramBundle := b.emitPointerPack(params, instr.Pos())
+	paramBundle := b.emitPointerPack(params)
 	var stackSize llvm.Value
 	callee := b.createGoroutineStartWrapper(funcType, funcPtr, prefix, hasContext, false, instr.Pos())
 	if b.AutomaticStackSize {
@@ -127,15 +122,6 @@ func (b *builder) createGo(instr *ssa.Go) {
 	b.createCall(fnType, start, []llvm.Value{callee, paramBundle, stackSize, llvm.Undef(b.dataPtrType)}, "")
 }

-func (b *builder) getGoroutineCallArgument(value ssa.Value, exported bool) []llvm.Value {
-	typ := b.getLLVMType(value.Type())
-	arg := b.getCallArgument(value, exported)
-	if b.isIndirectParam(typ, exported) {
-		return []llvm.Value{b.copyToIndirectStorage(arg, typ, "go.param")}
-	}
-	return b.expandFormalParam(arg)
-}
-
 // Create an exported wrapper function for functions with the //go:wasmexport
 // pragma. This wrapper function is quite complex when the scheduler is enabled:
 // it needs to start a new goroutine each time the exported function is called.
@@ -153,7 +139,7 @@ func (b *builder) createWasmExport() {
 	// Declare the exported function.
 	paramTypes := b.llvmFnType.ParamTypes()
 	exportedFnType := llvm.FunctionType(b.llvmFnType.ReturnType(), paramTypes[:len(paramTypes)-1], false)
-	exportedFn := llvm.AddFunction(b.mod, b.getFunctionInfo(b.fn).linkName+suffix, exportedFnType)
+	exportedFn := llvm.AddFunction(b.mod, b.fn.RelString(nil)+suffix, exportedFnType)
 	b.addStandardAttributes(exportedFn)
 	llvmutil.AppendToGlobal(b.mod, "llvm.used", exportedFn)
 	exportedFn.AddFunctionAttr(b.ctx.CreateStringAttribute("wasm-export-name", b.info.wasmExport))
@@ -309,10 +295,10 @@ func (c *compilerContext) createGoroutineStartWrapper(fnType llvm.Type, fn llvm.
 	}
 	defer b.Dispose()

-	var exitGoroutine llvm.Value
-	var exitGoroutineType llvm.Type
+	var deadlock llvm.Value
+	var deadlockType llvm.Type
 	if c.Scheduler == "asyncify" {
-		exitGoroutineType, exitGoroutine = c.getFunction(c.program.ImportedPackage("runtime").Members["exitGoroutine"].(*ssa.Function))
+		deadlockType, deadlock = c.getFunction(c.program.ImportedPackage("runtime").Members["deadlock"].(*ssa.Function))
 	}

 	if !fn.IsAFunction().IsNil() {
@@ -377,7 +363,7 @@ func (c *compilerContext) createGoroutineStartWrapper(fnType llvm.Type, fn llvm.
 			b.CreateCall(fnType, fn, params, "")

 			if c.Scheduler == "asyncify" {
-				b.CreateCall(exitGoroutineType, exitGoroutine, []llvm.Value{
+				b.CreateCall(deadlockType, deadlock, []llvm.Value{
 					llvm.Undef(c.dataPtrType),
 				}, "")
 			}
@@ -428,7 +414,7 @@ func (c *compilerContext) createGoroutineStartWrapper(fnType llvm.Type, fn llvm.
 			// Extract parameters from the state object, and call the function
 			// that's being wrapped.
 			var callParams []llvm.Value
-			for i := range numParams {
+			for i := 0; i < numParams; i++ {
 				gep := b.CreateInBoundsGEP(stateStruct, statePtr, []llvm.Value{
 					llvm.ConstInt(b.ctx.Int32Type(), 0, false),
 					llvm.ConstInt(b.ctx.Int32Type(), uint64(i), false),
@@ -528,13 +514,14 @@ func (c *compilerContext) createGoroutineStartWrapper(fnType llvm.Type, fn llvm.
 		b.CreateCall(fnType, fnPtr, params, "")

 		if c.Scheduler == "asyncify" {
-			b.CreateCall(exitGoroutineType, exitGoroutine, []llvm.Value{
+			b.CreateCall(deadlockType, deadlock, []llvm.Value{
 				llvm.Undef(c.dataPtrType),
 			}, "")
 		}
 	}

 	if c.Scheduler == "asyncify" {
+		// The goroutine was terminated via deadlock.
 		b.CreateUnreachable()
 	} else {
 		// Finish the function. Every basic block must end in a terminator, and
@@ -146,14 +146,13 @@ func (b *builder) emitSVCall(args []ssa.Value, pos token.Pos) (llvm.Value, error
 	llvmArgs := []llvm.Value{}
 	argTypes := []llvm.Type{}
 	asm := "svc #" + strconv.FormatUint(num, 10)
-	var constraints strings.Builder
-	constraints.WriteString("={r0}")
+	constraints := "={r0}"
 	for i, arg := range args[1:] {
 		arg = arg.(*ssa.MakeInterface).X
 		if i == 0 {
-			constraints.WriteString(",0")
+			constraints += ",0"
 		} else {
-			constraints.WriteString(",{r" + strconv.Itoa(i) + "}")
+			constraints += ",{r" + strconv.Itoa(i) + "}"
 		}
 		llvmValue := b.getValue(arg, pos)
 		llvmArgs = append(llvmArgs, llvmValue)
@@ -162,9 +161,9 @@ func (b *builder) emitSVCall(args []ssa.Value, pos token.Pos) (llvm.Value, error
 	// Implement the ARM calling convention by marking r1-r3 as
 	// clobbered. r0 is used as an output register so doesn't have to be
 	// marked as clobbered.
-	constraints.WriteString(",~{r1},~{r2},~{r3}")
+	constraints += ",~{r1},~{r2},~{r3}"
 	fnType := llvm.FunctionType(b.uintptrType, argTypes, false)
-	target := llvm.InlineAsm(fnType, asm, constraints.String(), true, false, 0, false)
+	target := llvm.InlineAsm(fnType, asm, constraints, true, false, 0, false)
 	return b.CreateCall(fnType, target, llvmArgs, ""), nil
 }

@@ -185,14 +184,13 @@ func (b *builder) emitSV64Call(args []ssa.Value, pos token.Pos) (llvm.Value, err
 	llvmArgs := []llvm.Value{}
 	argTypes := []llvm.Type{}
 	asm := "svc #" + strconv.FormatUint(num, 10)
-	var constraints strings.Builder
-	constraints.WriteString("={x0}")
+	constraints := "={x0}"
 	for i, arg := range args[1:] {
 		arg = arg.(*ssa.MakeInterface).X
 		if i == 0 {
-			constraints.WriteString(",0")
+			constraints += ",0"
 		} else {
-			constraints.WriteString(",{x" + strconv.Itoa(i) + "}")
+			constraints += ",{x" + strconv.Itoa(i) + "}"
 		}
 		llvmValue := b.getValue(arg, pos)
 		llvmArgs = append(llvmArgs, llvmValue)
@@ -201,9 +199,9 @@ func (b *builder) emitSV64Call(args []ssa.Value, pos token.Pos) (llvm.Value, err
 	// Implement the ARM64 calling convention by marking x1-x7 as
 	// clobbered. x0 is used as an output register so doesn't have to be
 	// marked as clobbered.
-	constraints.WriteString(",~{x1},~{x2},~{x3},~{x4},~{x5},~{x6},~{x7}")
+	constraints += ",~{x1},~{x2},~{x3},~{x4},~{x5},~{x6},~{x7}"
 	fnType := llvm.FunctionType(b.uintptrType, argTypes, false)
-	target := llvm.InlineAsm(fnType, asm, constraints.String(), true, false, 0, false)
+	target := llvm.InlineAsm(fnType, asm, constraints, true, false, 0, false)
 	return b.CreateCall(fnType, target, llvmArgs, ""), nil
 }

@@ -84,11 +84,7 @@ const (
 //
 // An interface value is a {typecode, value} tuple named runtime._interface.
 func (b *builder) createMakeInterface(val llvm.Value, typ types.Type, pos token.Pos) llvm.Value {
-	itfValue := b.emitPointerPack([]llvm.Value{val}, pos)
-	return b.createMakeInterfaceFromPointer(itfValue, typ)
-}
-
-func (b *builder) createMakeInterfaceFromPointer(itfValue llvm.Value, typ types.Type) llvm.Value {
+	itfValue := b.emitPointerPack([]llvm.Value{val})
 	itfType := b.getTypeCode(typ)
 	itf := llvm.Undef(b.getLLVMRuntimeType("_interface"))
 	itf = b.CreateInsertValue(itf, itfType, 0, "")
@@ -102,16 +98,9 @@ func (b *builder) createMakeInterfaceFromPointer(itfValue llvm.Value, typ types.
 // doesn't match the underlying type of the interface.
 func (b *builder) extractValueFromInterface(itf llvm.Value, llvmType llvm.Type) llvm.Value {
 	valuePtr := b.CreateExtractValue(itf, 1, "typeassert.value.ptr")
-	if b.isIndirectAggregate(llvmType) {
-		return valuePtr
-	}
 	return b.emitPointerUnpack(valuePtr, []llvm.Type{llvmType})[0]
 }

-func (b *builder) extractValuePointerFromInterface(itf llvm.Value) llvm.Value {
-	return b.CreateExtractValue(itf, 1, "typeassert.value.ptr")
-}
-
 func (c *compilerContext) pkgPathPtr(pkgpath string) llvm.Value {
 	pkgpathName := "reflect/types.type.pkgpath.empty"
 	if pkgpath != "" {
@@ -136,16 +125,6 @@ func (c *compilerContext) pkgPathPtr(pkgpath string) llvm.Value {
 	return pkgPathPtr
 }

-// isGenericMethod returns true for a method that has its own type parameters
-// (independent of any type parameters on its receiver), e.g. the N method in
-// "func (r *Rand) N[Int intType](n Int) Int { ... }". Like the reflect
-// package, such methods are excluded from runtime method sets: they aren't
-// instantiated, so their signature can't be represented in a type code, and
-// they can never satisfy an interface method anyway.
-func isGenericMethod(fn *types.Func) bool {
-	return fn.Signature().TypeParams().Len() > 0
-}
-
 // getTypeCode returns a reference to a type code.
 // A type code is a pointer to a constant global that describes the type.
 // This function returns a pointer to the 'kind' field (which might not be the
@@ -155,26 +134,22 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
 	typ = types.Unalias(typ)

 	ms := c.program.MethodSets.MethodSet(typ)
+	hasMethodSet := ms.Len() != 0
 	_, isInterface := typ.Underlying().(*types.Interface)
+	if isInterface {
+		hasMethodSet = false
+	}

 	// As defined in https://pkg.go.dev/reflect#Type:
 	// NumMethod returns the number of methods accessible using Method.
 	// For a non-interface type, it returns the number of exported methods.
 	// For an interface type, it returns the number of exported and unexported methods.
 	var numMethods int
-	var hasMethodSet bool
-	for method := range ms.Methods() {
-		if isGenericMethod(method.Obj().(*types.Func)) {
-			continue
-		}
-		hasMethodSet = true
-		if isInterface || method.Obj().Exported() {
+	for i := 0; i < ms.Len(); i++ {
+		if isInterface || ms.At(i).Obj().Exported() {
 			numMethods++
 		}
 	}
-	if isInterface {
-		hasMethodSet = false
-	}

 	// Short-circuit all the global pointer logic here for pointers to pointers.
 	if typ, ok := typ.(*types.Pointer); ok {
@@ -218,12 +193,8 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
 		}
 		// Compute the method set value for types that support methods.
 		var methods []*types.Func
-		for method := range ms.Methods() {
-			fn := method.Obj().(*types.Func)
-			if isGenericMethod(fn) {
-				continue
-			}
-			methods = append(methods, fn)
+		for i := 0; i < ms.Len(); i++ {
+			methods = append(methods, ms.At(i).Obj().(*types.Func))
 		}
 		methodSetType := types.NewStruct([]*types.Var{
 			types.NewVar(token.NoPos, nil, "length", types.Typ[types.Uintptr]),
@@ -519,7 +490,10 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
 				c.getTypeMethodSet(typ),
 			}, typeFields...)
 		}
-		alignment := max(c.targetData.TypeAllocSize(c.dataPtrType), 4)
+		alignment := c.targetData.TypeAllocSize(c.dataPtrType)
+		if alignment < 4 {
+			alignment = 4
+		}
 		globalValue := c.ctx.ConstStruct(typeFields, false)
 		global.SetInitializer(globalValue)
 		if isLocal {
@@ -628,21 +602,8 @@ func (c *compilerContext) getTypeCodeName(t types.Type) (name string, isLocal bo
 	case *types.Named:
 		tn := t.Obj()
 		if tn.Pkg() == nil || tn.Parent() == tn.Pkg().Scope() {
-			name := tn.Name()
-			if tn.Pkg() != nil {
-				name = tn.Pkg().Path() + "." + name
-			}
-			isLocal := false
-			if targs := t.TypeArgs(); targs.Len() != 0 {
-				parts := make([]string, targs.Len())
-				for i := range parts {
-					var local bool
-					parts[i], local = c.getTypeCodeName(targs.At(i))
-					isLocal = isLocal || local
-				}
-				name += "[" + strings.Join(parts, ",") + "]"
-			}
-			return "named:" + name, isLocal
+			// Package-scope or builtin: the printed name is unique.
+			return "named:" + t.String(), false
 		}
 		if tn.Parent() != nil {
 			// Ordinary function-local type. Use the un-//line-adjusted
@@ -749,8 +710,8 @@ func (c *compilerContext) getTypeCodeName(t types.Type) (name string, isLocal bo
 // Synthetic TypeNames are produced by generic instantiation: two
 // instantiations of the same generic function (e.g. F[int] and
 // F[string]) produce TypeNames with the same printed name and the
-// same source position, so each is named with the enclosing instance's
-// canonical function name as prefix. The function name encodes the type
+// same source position, so each is named with the enclosing
+// instance's RelString as prefix. RelString encodes the type
 // arguments, matching Go's runtime behavior, where F[int].Inner and
 // F[string].Inner are distinct types even when Inner does not mention
 // the type parameter.
@@ -759,9 +720,9 @@ func (c *compilerContext) getTypeCodeName(t types.Type) (name string, isLocal bo
 // of F[int] is compiled in every package that calls F[int]); its
 // reflect/types.type:* global has LinkOnceODRLinkage and is merged by
 // name at link time. The chosen name therefore depends only on
-// intrinsic SSA properties (the canonical function name and raw token.Pos),
-// so any package compiling the same instance produces the same
-// identifier.
+// intrinsic SSA properties (RelString and the raw token.Pos used as a
+// sort key), so any package compiling the same instance produces the
+// same identifier.
 //
 // Ordinary function-local TypeNames (TypeName.Parent() != nil) are
 // not handled here: they are nameable only inside their declaring
@@ -822,12 +783,12 @@ func (c *compilerContext) scanLocalTypes(ssaPkg *ssa.Package) {
 			walk(m, false)
 		case *ssa.Type:
 			mset := c.program.MethodSets.MethodSet(m.Type())
-			for method := range mset.Methods() {
-				walk(c.program.MethodValue(method), false)
+			for i := 0; i < mset.Len(); i++ {
+				walk(c.program.MethodValue(mset.At(i)), false)
 			}
 			pmset := c.program.MethodSets.MethodSet(types.NewPointer(m.Type()))
-			for method := range pmset.Methods() {
-				walk(c.program.MethodValue(method), false)
+			for i := 0; i < pmset.Len(); i++ {
+				walk(c.program.MethodValue(pmset.At(i)), false)
 			}
 		}
 	}
@@ -849,8 +810,9 @@ func (c *compilerContext) scanLocalTypes(ssaPkg *ssa.Package) {

 // registerSyntheticLocalTypes walks every type reachable from fn's
 // body and records each synthetic *types.Named (TypeName.Parent() ==
-// nil) in c.localTypeNames. Each is named with the canonical function
-// name plus a per-function counter assigned in source order.
+// nil) in c.localTypeNames. Each is named with fn.RelString as the
+// owning function plus a per-function counter assigned in source
+// order.
 //
 // First-writer-wins: a *types.Named already present in
 // c.localTypeNames is left alone, so a synthetic type reachable from
@@ -884,8 +846,8 @@ func (c *compilerContext) registerSyntheticLocalTypes(fn *ssa.Function) {
 				}
 			}
 			targs := t.TypeArgs()
-			for t := range targs.Types() {
-				visit(t)
+			for i := 0; i < targs.Len(); i++ {
+				visit(targs.At(i))
 			}
 			visit(t.Underlying())
 		case *types.Pointer:
@@ -900,23 +862,23 @@ func (c *compilerContext) registerSyntheticLocalTypes(fn *ssa.Function) {
 			visit(t.Key())
 			visit(t.Elem())
 		case *types.Struct:
-			for field := range t.Fields() {
-				visit(field.Type())
+			for i := 0; i < t.NumFields(); i++ {
+				visit(t.Field(i).Type())
 			}
 		case *types.Signature:
 			if p := t.Params(); p != nil {
-				for v := range p.Variables() {
-					visit(v.Type())
+				for i := 0; i < p.Len(); i++ {
+					visit(p.At(i).Type())
 				}
 			}
 			if r := t.Results(); r != nil {
-				for v := range r.Variables() {
-					visit(v.Type())
+				for i := 0; i < r.Len(); i++ {
+					visit(r.At(i).Type())
 				}
 			}
 		case *types.Tuple:
-			for v := range t.Variables() {
-				visit(v.Type())
+			for i := 0; i < t.Len(); i++ {
+				visit(t.At(i).Type())
 			}
 		case *types.Interface:
 			// A synthetic local type can be reachable only through a
@@ -925,8 +887,8 @@ func (c *compilerContext) registerSyntheticLocalTypes(fn *ssa.Function) {
 			// the interface's identifier, and the seen map breaks
 			// cycles formed by methods that mention the interface
 			// itself.
-			for method := range t.Methods() {
-				visit(method.Type())
+			for i := 0; i < t.NumMethods(); i++ {
+				visit(t.Method(i).Type())
 			}
 		}
 	}
@@ -961,7 +923,7 @@ func (c *compilerContext) registerSyntheticLocalTypes(fn *ssa.Function) {
 	sort.Slice(found, func(i, j int) bool {
 		return found[i].Obj().Pos() < found[j].Obj().Pos()
 	})
-	enclosing := c.canonicalFunctionName(fn)
+	enclosing := fn.RelString(nil)
 	for i, named := range found {
 		c.localTypeNames.Set(named, fmt.Sprintf("%s.%s$%d", enclosing, named.Obj().Name(), i))
 	}
@@ -970,18 +932,15 @@ func (c *compilerContext) registerSyntheticLocalTypes(fn *ssa.Function) {
 // getTypeMethodSet returns a reference (GEP) to a global method set. This
 // method set should be unreferenced after the interface lowering pass.
 func (c *compilerContext) getTypeMethodSet(typ types.Type) llvm.Value {
-	typeName, _ := c.getTypeCodeName(typ)
-	globalName := typeName + "$methodset"
+	globalName := typ.String() + "$methodset"
 	global := c.mod.NamedGlobal(globalName)
 	if global.IsNil() {
 		ms := c.program.MethodSets.MethodSet(typ)

 		// Create method set.
 		var signatures, wrappers []llvm.Value
-		for method := range ms.Methods() {
-			if isGenericMethod(method.Obj().(*types.Func)) {
-				continue
-			}
+		for i := 0; i < ms.Len(); i++ {
+			method := ms.At(i)
 			signatureGlobal := c.getMethodSignature(method.Obj().(*types.Func))
 			signatures = append(signatures, signatureGlobal)
 			fn := c.program.MethodValue(method)
@@ -996,7 +955,7 @@ func (c *compilerContext) getTypeMethodSet(typ types.Type) llvm.Value {

 		// Construct global value.
 		globalValue := c.ctx.ConstStruct([]llvm.Value{
-			llvm.ConstInt(c.uintptrType, uint64(len(signatures)), false),
+			llvm.ConstInt(c.uintptrType, uint64(ms.Len()), false),
 			llvm.ConstArray(c.dataPtrType, signatures),
 			c.ctx.ConstStruct(wrappers, false),
 		}, false)
@@ -1012,15 +971,14 @@ func (c *compilerContext) getTypeMethodSet(typ types.Type) llvm.Value {
 // getMethodSignatureName returns a unique name (that can be used as the name of
 // a global) for the given method.
 func (c *compilerContext) getMethodSignatureName(method *types.Func) string {
-	name := method.Name()
-	var prefix string
+	signature := methodSignature(method)
+	var globalName string
 	if token.IsExported(method.Name()) {
-		prefix = "reflect/methods."
+		globalName = "reflect/methods." + signature
 	} else {
-		prefix = method.Type().(*types.Signature).Recv().Pkg().Path() + ".$methods."
+		globalName = method.Type().(*types.Signature).Recv().Pkg().Path() + ".$methods." + signature
 	}
-	signature, _ := c.getTypeCodeName(method.Type())
-	return prefix + name + ":" + signature
+	return globalName
 }

 // getMethodSignature returns a global variable which is a reference to an
@@ -1099,21 +1057,6 @@ func (b *builder) createTypeAssert(expr *ssa.TypeAssert) llvm.Value {
 	if expr.CommaOk {
 		nextBlock := b.insertBasicBlock("typeassert.next")
 		b.currentBlockInfo.exit = nextBlock
-		if b.isIndirectAggregate(assertedType) {
-			resultType := b.getLLVMType(expr.Type())
-			result := b.createIndirectStorage(resultType, "typeassert.result")
-			b.zeroIndirectStorage(result, resultType)
-			b.CreateCondBr(commaOk, okBlock, nextBlock)
-
-			b.SetInsertPointAtEnd(okBlock)
-			valuePtr := b.extractValuePointerFromInterface(itf)
-			b.copyIndirectAggregate(b.CreateStructGEP(resultType, result, 0, ""), valuePtr, assertedType)
-			b.CreateBr(nextBlock)
-
-			b.SetInsertPointAtEnd(nextBlock)
-			b.CreateStore(commaOk, b.CreateStructGEP(resultType, result, 1, ""))
-			return result
-		}
 		b.CreateCondBr(commaOk, okBlock, nextBlock)

 		// Retrieve the value from the interface if the type assert was
@@ -1240,33 +1183,26 @@ func (c *compilerContext) getMethodSetValue(methods []*types.Func) llvm.Value {
 // thunk is declared, not defined: it will be defined by the interface lowering
 // pass.
 func (c *compilerContext) getInvokeFunction(instr *ssa.CallCommon) llvm.Value {
-	fnName := c.getInvokeFunctionName(instr)
+	s, _ := c.getTypeCodeName(instr.Value.Type().Underlying())
+	fnName := s + "." + instr.Method.Name() + "$invoke"
 	llvmFn := c.mod.NamedFunction(fnName)
 	if llvmFn.IsNil() {
 		sig := instr.Method.Type().(*types.Signature)
 		var paramTuple []*types.Var
-		for v := range sig.Params().Variables() {
-			paramTuple = append(paramTuple, v)
+		for i := 0; i < sig.Params().Len(); i++ {
+			paramTuple = append(paramTuple, sig.Params().At(i))
 		}
 		paramTuple = append(paramTuple, types.NewVar(token.NoPos, nil, "$typecode", types.Typ[types.UnsafePointer]))
 		llvmFnType := c.getLLVMFunctionType(types.NewSignature(sig.Recv(), types.NewTuple(paramTuple...), sig.Results(), false))
 		llvmFn = llvm.AddFunction(c.mod, fnName, llvmFnType)
 		c.addStandardDeclaredAttributes(llvmFn)
 		llvmFn.AddFunctionAttr(c.ctx.CreateStringAttribute("tinygo-invoke", c.getMethodSignatureName(instr.Method)))
-		if _, indirect := c.hasIndirectResult(sig); indirect {
-			llvmFn.AddFunctionAttr(c.ctx.CreateStringAttribute("tinygo-indirect-result", "true"))
-		}
 		methods := c.getMethodsString(instr.Value.Type().Underlying().(*types.Interface))
 		llvmFn.AddFunctionAttr(c.ctx.CreateStringAttribute("tinygo-methods", methods))
 	}
 	return llvmFn
 }

-func (c *compilerContext) getInvokeFunctionName(instr *ssa.CallCommon) string {
-	s, _ := c.getTypeCodeName(instr.Value.Type().Underlying())
-	return s + "." + instr.Method.Name() + "$invoke"
-}
-
 // createInterfaceTypeAssert creates a call to a declared-but-not-defined
 // $typeassert function for the given interface. This function will be defined
 // by the interface lowering pass as a type-ID comparison chain, avoiding the
@@ -1301,7 +1237,6 @@ func (c *compilerContext) getInterfaceInvokeWrapper(fn *ssa.Function, llvmFnType
 	// Get the expanded receiver type.
 	receiverType := c.getLLVMType(fn.Signature.Recv().Type())
 	var expandedReceiverType []llvm.Type
-	receiverIndirect := c.isIndirectAggregate(receiverType)
 	for _, info := range c.expandFormalParamType(receiverType, "", nil) {
 		expandedReceiverType = append(expandedReceiverType, info.llvmType)
 	}
@@ -1316,13 +1251,7 @@ func (c *compilerContext) getInterfaceInvokeWrapper(fn *ssa.Function, llvmFnType
 	}

 	// create wrapper function
-	resultOffset := 0
-	if _, indirect := c.hasIndirectResult(fn.Signature); indirect {
-		resultOffset = 1
-	}
-	paramTypes := append([]llvm.Type{}, llvmFnType.ParamTypes()[:resultOffset]...)
-	paramTypes = append(paramTypes, c.dataPtrType)
-	paramTypes = append(paramTypes, llvmFnType.ParamTypes()[resultOffset+len(expandedReceiverType):]...)
+	paramTypes := append([]llvm.Type{c.dataPtrType}, llvmFnType.ParamTypes()[len(expandedReceiverType):]...)
 	wrapFnType := llvm.FunctionType(llvmFnType.ReturnType(), paramTypes, false)
 	wrapper = llvm.AddFunction(c.mod, wrapperName, wrapFnType)
 	c.addStandardAttributes(wrapper)
@@ -1348,15 +1277,8 @@ func (c *compilerContext) getInterfaceInvokeWrapper(fn *ssa.Function, llvmFnType
 	block := b.ctx.AddBasicBlock(wrapper, "entry")
 	b.SetInsertPointAtEnd(block)

-	params := append([]llvm.Value{}, wrapper.Params()[:resultOffset]...)
-	receiverParam := wrapper.Param(resultOffset)
-	if receiverIndirect {
-		params = append(params, receiverParam)
-	} else {
-		receiverValue := b.emitPointerUnpack(receiverParam, []llvm.Type{receiverType})[0]
-		params = append(params, b.expandFormalParam(receiverValue)...)
-	}
-	params = append(params, wrapper.Params()[resultOffset+1:]...)
+	receiverValue := b.emitPointerUnpack(wrapper.Param(0), []llvm.Type{receiverType})[0]
+	params := append(b.expandFormalParam(receiverValue), wrapper.Params()[1:]...)
 	if llvmFnType.ReturnType().TypeKind() == llvm.VoidTypeKind {
 		b.CreateCall(llvmFnType, llvmFn, params, "")
 		b.CreateRetVoid()
@@ -1367,3 +1289,104 @@ func (c *compilerContext) getInterfaceInvokeWrapper(fn *ssa.Function, llvmFnType

 	return wrapper
 }
+
+// methodSignature creates a readable version of a method signature (including
+// the function name, excluding the receiver name). This string is used
+// internally to match interfaces and to call the correct method on an
+// interface. Examples:
+//
+//	String() string
+//	Read([]byte) (int, error)
+func methodSignature(method *types.Func) string {
+	return method.Name() + signature(method.Type().(*types.Signature))
+}
+
+// Make a readable version of a function (pointer) signature.
+// Examples:
+//
+//	() string
+//	(string, int) (int, error)
+func signature(sig *types.Signature) string {
+	s := ""
+	if sig.Params().Len() == 0 {
+		s += "()"
+	} else {
+		s += "("
+		for i := 0; i < sig.Params().Len(); i++ {
+			if i > 0 {
+				s += ", "
+			}
+			s += typestring(sig.Params().At(i).Type())
+		}
+		s += ")"
+	}
+	if sig.Results().Len() == 0 {
+		// keep as-is
+	} else if sig.Results().Len() == 1 {
+		s += " " + typestring(sig.Results().At(0).Type())
+	} else {
+		s += " ("
+		for i := 0; i < sig.Results().Len(); i++ {
+			if i > 0 {
+				s += ", "
+			}
+			s += typestring(sig.Results().At(i).Type())
+		}
+		s += ")"
+	}
+	return s
+}
+
+// typestring returns a stable (human-readable) type string for the given type
+// that can be used for interface equality checks. It is almost (but not
+// exactly) the same as calling t.String(). The main difference is some
+// normalization around `byte` vs `uint8` for example.
+func typestring(t types.Type) string {
+	// See: https://github.com/golang/go/blob/master/src/go/types/typestring.go
+	switch t := types.Unalias(t).(type) {
+	case *types.Array:
+		return "[" + strconv.FormatInt(t.Len(), 10) + "]" + typestring(t.Elem())
+	case *types.Basic:
+		return basicTypeNames[t.Kind()]
+	case *types.Chan:
+		switch t.Dir() {
+		case types.SendRecv:
+			return "chan (" + typestring(t.Elem()) + ")"
+		case types.SendOnly:
+			return "chan<- (" + typestring(t.Elem()) + ")"
+		case types.RecvOnly:
+			return "<-chan (" + typestring(t.Elem()) + ")"
+		default:
+			panic("unknown channel direction")
+		}
+	case *types.Interface:
+		methods := make([]string, t.NumMethods())
+		for i := range methods {
+			method := t.Method(i)
+			methods[i] = method.Name() + signature(method.Type().(*types.Signature))
+		}
+		return "interface{" + strings.Join(methods, ";") + "}"
+	case *types.Map:
+		return "map[" + typestring(t.Key()) + "]" + typestring(t.Elem())
+	case *types.Named:
+		return t.String()
+	case *types.Pointer:
+		return "*" + typestring(t.Elem())
+	case *types.Signature:
+		return "func" + signature(t)
+	case *types.Slice:
+		return "[]" + typestring(t.Elem())
+	case *types.Struct:
+		fields := make([]string, t.NumFields())
+		for i := range fields {
+			field := t.Field(i)
+			fields[i] = field.Name() + " " + typestring(field.Type())
+			if tag := t.Tag(i); tag != "" {
+				fields[i] += " " + strconv.Quote(tag)
+			}
+		}
+		return "struct{" + strings.Join(fields, ";") + "}"
+	default:
+		panic("unknown type: " + t.String())
+	}
+}
@@ -54,7 +54,7 @@ func (b *builder) emitLifetimeEnd(ptr, size llvm.Value) {
 // pointer value directly. It returns the pointer with the packed data.
 // If the values are all constants, they are be stored in a constant global and
 // deduplicated.
-func (b *builder) emitPointerPack(values []llvm.Value, pos token.Pos) llvm.Value {
+func (b *builder) emitPointerPack(values []llvm.Value) llvm.Value {
 	valueTypes := make([]llvm.Type, len(values))
 	for i, value := range values {
 		valueTypes[i] = value.Type()
@@ -128,9 +128,8 @@ func (b *builder) emitPointerPack(values []llvm.Value, pos token.Pos) llvm.Value

 		// Packed data is bigger than a pointer, so allocate it on the heap.
 		sizeValue := llvm.ConstInt(b.uintptrType, size, false)
-		layoutValue := b.createObjectLayout(packedType, pos)
 		align := b.targetData.ABITypeAlignment(packedType)
-		packedAlloc := b.createAlloc(sizeValue, layoutValue, align, "")
+		packedAlloc := b.createAlloc(sizeValue, llvm.ConstNull(b.dataPtrType), align, "")
 		if b.NeedsStackObjects {
 			b.trackPointer(packedAlloc)
 		}
@@ -207,7 +206,7 @@ func (c *compilerContext) makeGlobalArray(buf []byte, name string, elementType l
 	globalType := llvm.ArrayType(elementType, len(buf))
 	global := llvm.AddGlobal(c.mod, globalType, name)
 	value := llvm.Undef(globalType)
-	for i := range buf {
+	for i := 0; i < len(buf); i++ {
 		ch := uint64(buf[i])
 		value = c.builder.CreateInsertValue(value, llvm.ConstInt(elementType, ch, false), i, "")
 	}
@@ -391,7 +390,7 @@ func (c *compilerContext) buildPointerBitmap(
 			return
 		}
 		elementSize /= ptrAlign
-		for i := range len {
+		for i := 0; i < len; i++ {
 			c.buildPointerBitmap(
 				dst,
 				ptrAlign,
@@ -418,7 +417,7 @@ func (c *compilerContext) archFamily() string {
 // features string is not one for an ARM architecture.
 func (c *compilerContext) isThumb() bool {
 	var isThumb, isNotThumb bool
-	for feature := range strings.SplitSeq(c.Features, ",") {
+	for _, feature := range strings.Split(c.Features, ",") {
 		if feature == "+thumb-mode" {
 			isThumb = true
 		}
@@ -44,7 +44,7 @@ func CreateTemporaryAlloca(builder llvm.Builder, mod llvm.Module, t llvm.Type, n
 	alloca = CreateEntryBlockAlloca(builder, t, name)
 	size = llvm.ConstInt(ctx.Int64Type(), targetData.TypeAllocSize(t), false)
 	fnType, fn := getLifetimeStartFunc(mod)
-	builder.CreateCall(fnType, fn, lifetimeCallArgs(size, alloca), "")
+	builder.CreateCall(fnType, fn, []llvm.Value{size, alloca}, "")
 	return
 }

@@ -58,14 +58,14 @@ func CreateInstructionAlloca(builder llvm.Builder, mod llvm.Module, t llvm.Type,
 	builder.SetInsertPointBefore(inst)
 	size := llvm.ConstInt(ctx.Int64Type(), targetData.TypeAllocSize(t), false)
 	fnType, fn := getLifetimeStartFunc(mod)
-	builder.CreateCall(fnType, fn, lifetimeCallArgs(size, alloca), "")
+	builder.CreateCall(fnType, fn, []llvm.Value{size, alloca}, "")
 	if next := llvm.NextInstruction(inst); !next.IsNil() {
 		builder.SetInsertPointBefore(next)
 	} else {
 		builder.SetInsertPointAtEnd(inst.InstructionParent())
 	}
 	fnType, fn = getLifetimeEndFunc(mod)
-	builder.CreateCall(fnType, fn, lifetimeCallArgs(size, alloca), "")
+	builder.CreateCall(fnType, fn, []llvm.Value{size, alloca}, "")
 	return alloca
 }

@@ -74,27 +74,7 @@ func CreateInstructionAlloca(builder llvm.Builder, mod llvm.Module, t llvm.Type,
 // createTemporaryAlloca.
 func EmitLifetimeEnd(builder llvm.Builder, mod llvm.Module, ptr, size llvm.Value) {
 	fnType, fn := getLifetimeEndFunc(mod)
-	builder.CreateCall(fnType, fn, lifetimeCallArgs(size, ptr), "")
-}
-
-// lifetimeCallArgs returns the arguments to pass to a call of the
-// llvm.lifetime.start/end intrinsics. LLVM 22 dropped the (redundant,
-// already required to match the alloca size) i64 size argument, so the
-// intrinsic now only takes the pointer.
-func lifetimeCallArgs(size, ptr llvm.Value) []llvm.Value {
-	if Version() >= 22 {
-		return []llvm.Value{ptr}
-	}
-	return []llvm.Value{size, ptr}
-}
-
-// lifetimeFuncType returns the function type of the llvm.lifetime.start/end
-// intrinsics, which lost their i64 size parameter in LLVM 22.
-func lifetimeFuncType(ctx llvm.Context, ptrType llvm.Type) llvm.Type {
-	if Version() >= 22 {
-		return llvm.FunctionType(ctx.VoidType(), []llvm.Type{ptrType}, false)
-	}
-	return llvm.FunctionType(ctx.VoidType(), []llvm.Type{ctx.Int64Type(), ptrType}, false)
+	builder.CreateCall(fnType, fn, []llvm.Value{size, ptr}, "")
 }

 // getLifetimeStartFunc returns the llvm.lifetime.start intrinsic and creates it
@@ -104,7 +84,7 @@ func getLifetimeStartFunc(mod llvm.Module) (llvm.Type, llvm.Value) {
 	fn := mod.NamedFunction(fnName)
 	ctx := mod.Context()
 	ptrType := llvm.PointerType(ctx.Int8Type(), 0)
-	fnType := lifetimeFuncType(ctx, ptrType)
+	fnType := llvm.FunctionType(ctx.VoidType(), []llvm.Type{ctx.Int64Type(), ptrType}, false)
 	if fn.IsNil() {
 		fn = llvm.AddFunction(mod, fnName, fnType)
 	}
@@ -118,7 +98,7 @@ func getLifetimeEndFunc(mod llvm.Module) (llvm.Type, llvm.Value) {
 	fn := mod.NamedFunction(fnName)
 	ctx := mod.Context()
 	ptrType := llvm.PointerType(ctx.Int8Type(), 0)
-	fnType := lifetimeFuncType(ctx, ptrType)
+	fnType := llvm.FunctionType(ctx.VoidType(), []llvm.Type{ctx.Int64Type(), ptrType}, false)
 	if fn.IsNil() {
 		fn = llvm.AddFunction(mod, fnName, fnType)
 	}
@@ -238,36 +218,6 @@ func Version() int {
 	return major
 }

-// NoCaptureAttrName returns the name of the LLVM attribute kind that marks a
-// pointer parameter as guaranteed not to escape by capture.
-//
-// LLVM 21 removed the old boolean 'nocapture' enum attribute in favor of the
-// more expressive 'captures' int attribute, where 'captures(none)' (encoded
-// as the value 0) is the equivalent of the old 'nocapture'. LLVM 20 supports
-// both, but its own optimizer still emits 'nocapture', so the cutoff for
-// reading/writing the new name is LLVM 21.
-func NoCaptureAttrName() string {
-	if Version() >= 21 {
-		return "captures"
-	}
-	return "nocapture"
-}
-
-// IsNoCapture reports whether attr (looked up using the kind returned by
-// NoCaptureAttrName) indicates that the pointer it is attached to does not
-// escape by capture. It returns false for a nil attribute.
-func IsNoCapture(attr llvm.Attribute) bool {
-	if attr.IsNil() {
-		return false
-	}
-	if Version() >= 21 {
-		// captures(none) is encoded as the value 0; any other value permits
-		// some form of capture.
-		return attr.GetEnumValue() == 0
-	}
-	return true
-}
-
 // ByteOrder returns the byte order for the given target triple. Most targets are little
 // endian, but for example MIPS can be big-endian.
 func ByteOrder(target string) binary.ByteOrder {
@@ -7,7 +7,6 @@ import (
 	"go/token"
 	"go/types"
 	"golang.org/x/tools/go/ssa"
-	"strings"
 	"tinygo.org/x/go-llvm"
 )

@@ -72,20 +71,19 @@ func (b *builder) getRuntimeFunctionValue(name string, sig *types.Signature) llv

 // createMapLookup returns the value in a map. It calls a runtime function
 // depending on the map key type to load the map value and its comma-ok value.
-func (b *builder) createMapLookup(keyType, valueType types.Type, m llvm.Value, key ssa.Value, commaOk bool, pos token.Pos) (llvm.Value, error) {
+func (b *builder) createMapLookup(keyType, valueType types.Type, m, key llvm.Value, commaOk bool, pos token.Pos) (llvm.Value, error) {
 	llvmValueType := b.getLLVMType(valueType)

 	// Allocate the memory for the resulting type. Do not zero this memory: it
 	// will be zeroed by the hashmap get implementation if the key is not
 	// present in the map.
-	result := b.createRuntimeValueResult(llvmValueType, commaOk, false, "hashmap")
-	mapValueAlloca := result.valuePtr
+	mapValueAlloca, mapValueAllocaSize := b.createTemporaryAlloca(llvmValueType, "hashmap.value")

 	// We need the map size (with type uintptr) to pass to the hashmap*Get
 	// functions. This is necessary because those *Get functions are valid on
 	// nil maps, and they'll need to zero the value pointer by that number of
 	// bytes.
-	mapValueSize := result.valueSize
+	mapValueSize := mapValueAllocaSize
 	if mapValueSize.Type().IntTypeWidth() > b.uintptrType.IntTypeWidth() {
 		mapValueSize = llvm.ConstTrunc(mapValueSize, b.uintptrType)
 	}
@@ -95,46 +93,60 @@ func (b *builder) createMapLookup(keyType, valueType types.Type, m llvm.Value, k
 	keyType = keyType.Underlying()
 	if t, ok := keyType.(*types.Basic); ok && t.Info()&types.IsString != 0 {
 		// key is a string
-		params := []llvm.Value{m, b.getValue(key, getPos(key)), mapValueAlloca, mapValueSize}
+		params := []llvm.Value{m, key, mapValueAlloca, mapValueSize}
 		commaOkValue = b.createRuntimeCall("hashmapStringGet", params, "")
 	} else {
 		// Key stored at actual type: either binary-comparable or with
 		// compiler-generated hash/equal.
-		mapKey := b.getValueStorage(key, "hashmap.key")
-		params := []llvm.Value{m, mapKey.ptr, mapValueAlloca, mapValueSize}
+		mapKeyAlloca, mapKeySize := b.createTemporaryAlloca(key.Type(), "hashmap.key")
+		b.CreateStore(key, mapKeyAlloca)
+		params := []llvm.Value{m, mapKeyAlloca, mapValueAlloca, mapValueSize}
 		fnName := "hashmapBinaryGet"
 		if !hashmapIsBinaryKey(keyType) {
 			fnName = "hashmapGenericGet"
 		}
 		commaOkValue = b.createRuntimeCall(fnName, params, "")
-		b.endValueStorage(mapKey)
+		b.emitLifetimeEnd(mapKeyAlloca, mapKeySize)
 	}

-	// The value is set to the zero value if the key doesn't exist.
-	return result.finish(b, commaOkValue, ""), nil
+	// Load the resulting value from the hashmap. The value is set to the zero
+	// value if the key doesn't exist in the hashmap.
+	mapValue := b.CreateLoad(llvmValueType, mapValueAlloca, "")
+	b.emitLifetimeEnd(mapValueAlloca, mapValueAllocaSize)
+
+	if commaOk {
+		tuple := llvm.Undef(b.ctx.StructType([]llvm.Type{llvmValueType, b.ctx.Int1Type()}, false))
+		tuple = b.CreateInsertValue(tuple, mapValue, 0, "")
+		tuple = b.CreateInsertValue(tuple, commaOkValue, 1, "")
+		return tuple, nil
+	} else {
+		return mapValue, nil
+	}
 }

 // createMapUpdate updates a map key to a given value, by creating an
 // appropriate runtime call.
-func (b *builder) createMapUpdate(keyType types.Type, m llvm.Value, key, value ssa.Value, pos token.Pos) {
-	storedValue := b.getValueStorage(value, "hashmap.value")
+func (b *builder) createMapUpdate(keyType types.Type, m, key, value llvm.Value, pos token.Pos) {
+	valueAlloca, valueSize := b.createTemporaryAlloca(value.Type(), "hashmap.value")
+	b.CreateStore(value, valueAlloca)
 	keyType = keyType.Underlying()
 	if t, ok := keyType.(*types.Basic); ok && t.Info()&types.IsString != 0 {
 		// key is a string
-		params := []llvm.Value{m, b.getValue(key, getPos(key)), storedValue.ptr}
+		params := []llvm.Value{m, key, valueAlloca}
 		b.createRuntimeInvoke("hashmapStringSet", params, "")
 	} else {
 		// Key stored at actual type.
-		keyStorage := b.getValueStorage(key, "hashmap.key")
+		keyAlloca, keySize := b.createTemporaryAlloca(key.Type(), "hashmap.key")
+		b.CreateStore(key, keyAlloca)
 		fnName := "hashmapBinarySet"
 		if !hashmapIsBinaryKey(keyType) {
 			fnName = "hashmapGenericSet"
 		}
-		params := []llvm.Value{m, keyStorage.ptr, storedValue.ptr}
+		params := []llvm.Value{m, keyAlloca, valueAlloca}
 		b.createRuntimeInvoke(fnName, params, "")
-		b.endValueStorage(keyStorage)
+		b.emitLifetimeEnd(keyAlloca, keySize)
 	}
-	b.endValueStorage(storedValue)
+	b.emitLifetimeEnd(valueAlloca, valueSize)
 }

 // createMapDelete deletes a key from a map by calling the appropriate runtime
@@ -281,15 +293,14 @@ func hashmapCanonicalTypeName(t types.Type) string {
 		}
 		return t.String()
 	case *types.Struct:
-		var s strings.Builder
-		s.WriteString("struct{")
+		s := "struct{"
 		for i := 0; i < t.NumFields(); i++ {
 			if i > 0 {
-				s.WriteString("; ")
+				s += "; "
 			}
-			s.WriteString(hashmapCanonicalTypeName(t.Field(i).Type()))
+			s += hashmapCanonicalTypeName(t.Field(i).Type())
 		}
-		return s.String() + "}"
+		return s + "}"
 	case *types.Array:
 		return fmt.Sprintf("[%d]%s", t.Len(), hashmapCanonicalTypeName(t.Elem()))
 	}
@@ -29,7 +29,8 @@ func (s *stdSizes) Alignof(T types.Type) int64 {
 		// is the largest of the values unsafe.Alignof(x.f) for each
 		// field f of x, but at least 1."
 		max := int64(1)
-		for f := range t.Fields() {
+		for i := 0; i < t.NumFields(); i++ {
+			f := t.Field(i)
 			if a := s.Alignof(f.Type()); a > max {
 				max = a
 			}
@@ -8,7 +8,6 @@ import (
 	"go/ast"
 	"go/token"
 	"go/types"
-	"slices"
 	"strconv"
 	"strings"

@@ -79,27 +78,24 @@ func (c *compilerContext) getFunction(fn *ssa.Function) (llvm.Type, llvm.Value)
 		return llvmFn.GlobalValueType(), llvmFn
 	}

-	retType, indirectResult := c.hasIndirectResult(fn.Signature)
-	if info.exported {
-		indirectResult = false
+	var retType llvm.Type
+	if fn.Signature.Results() == nil {
+		retType = c.ctx.VoidType()
+	} else if fn.Signature.Results().Len() == 1 {
+		retType = c.getLLVMType(fn.Signature.Results().At(0).Type())
+	} else {
+		results := make([]llvm.Type, 0, fn.Signature.Results().Len())
+		for i := 0; i < fn.Signature.Results().Len(); i++ {
+			results = append(results, c.getLLVMType(fn.Signature.Results().At(i).Type()))
+		}
+		retType = c.ctx.StructType(results, false)
 	}

 	var paramInfos []paramInfo
-	if indirectResult {
-		paramInfos = append(paramInfos, paramInfo{
-			llvmType: c.dataPtrType,
-			name:     "return",
-			elemSize: c.targetData.TypeAllocSize(retType),
-		})
-		retType = c.ctx.VoidType()
-	}
 	for _, param := range getParams(fn.Signature) {
 		paramType := c.getLLVMType(param.Type())
-		if info.exported {
-			paramInfos = append(paramInfos, c.expandDirectFormalParamType(paramType, param.Name(), param.Type())...)
-		} else {
-			paramInfos = append(paramInfos, c.expandFormalParamType(paramType, param.Name(), param.Type())...)
-		}
+		paramFragmentInfos := c.expandFormalParamType(paramType, param.Name(), param.Type())
+		paramInfos = append(paramInfos, paramFragmentInfos...)
 	}

 	// Add an extra parameter as the function context. This context is used in
@@ -109,20 +105,12 @@ func (c *compilerContext) getFunction(fn *ssa.Function) (llvm.Type, llvm.Value)
 	}

 	var paramTypes []llvm.Type
-	hasIndirectABI := indirectResult
 	for _, info := range paramInfos {
 		paramTypes = append(paramTypes, info.llvmType)
-		hasIndirectABI = hasIndirectABI || info.flags&paramIsIndirect != 0
 	}

 	fnType := llvm.FunctionType(retType, paramTypes, info.variadic)
 	llvmFn = llvm.AddFunction(c.mod, info.linkName, fnType)
-	if hasIndirectABI {
-		// Argument promotion only rewrites functions whose uses are all direct
-		// calls. Keep an address use so LLVM cannot reconstruct the large
-		// aggregate signature that this ABI exists to avoid.
-		llvmutil.AppendToGlobal(c.mod, "llvm.used", llvmFn)
-	}
 	if strings.HasPrefix(c.Triple, "wasm") {
 		// C functions without prototypes like this:
 		//   void foo();
@@ -152,7 +140,7 @@ func (c *compilerContext) getFunction(fn *ssa.Function) (llvm.Type, llvm.Value)
 			// not.
 			// (It may be safe to add the nocapture parameter to the context
 			// parameter, but I'd like to stay on the safe side here).
-			nocapture := c.ctx.CreateEnumAttribute(llvm.AttributeKindID(llvmutil.NoCaptureAttrName()), 0)
+			nocapture := c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0)
 			llvmFn.AddAttributeAtIndex(i+1, nocapture)
 		}
 		if paramInfo.flags&paramIsReadonly != 0 && paramInfo.llvmType.TypeKind() == llvm.PointerTypeKind {
@@ -171,9 +159,9 @@ func (c *compilerContext) getFunction(fn *ssa.Function) (llvm.Type, llvm.Value)
 		// Mark it as noreturn so LLVM can optimize away code.
 		llvmFn.AddFunctionAttr(c.ctx.CreateEnumAttribute(llvm.AttributeKindID("noreturn"), 0))
 	case "internal/abi.NoEscape":
-		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID(llvmutil.NoCaptureAttrName()), 0))
+		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
 	case "machine.keepAliveNoEscape", "machine.unsafeNoEscape":
-		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID(llvmutil.NoCaptureAttrName()), 0))
+		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
 	case "runtime.alloc", "runtime.alloc_noheap", "runtime.alloc_zero":
 		// Tell the optimizer that runtime.alloc is an allocator, meaning that it
 		// returns values that are never null and never alias to an existing value.
@@ -195,44 +183,44 @@ func (c *compilerContext) getFunction(fn *ssa.Function) (llvm.Type, llvm.Value)
 	case "runtime.sliceAppend":
 		// Appending a slice will only read the to-be-appended slice, it won't
 		// be modified.
-		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID(llvmutil.NoCaptureAttrName()), 0))
+		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
 		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("readonly"), 0))
 	case "runtime.stringFromBytes":
-		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID(llvmutil.NoCaptureAttrName()), 0))
+		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
 		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("readonly"), 0))
 	case "runtime.stringFromRunes":
-		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID(llvmutil.NoCaptureAttrName()), 0))
+		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
 		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("readonly"), 0))
 	case "runtime.hashmapSet":
 		// The key (param 2) and value (param 3) pointers are only read via
 		// memcpy/hash/equal and are never captured. The indirect calls
 		// through m.keyHash and m.keyEqual function pointers prevent LLVM's
 		// functionattrs pass from inferring this automatically.
-		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID(llvmutil.NoCaptureAttrName()), 0))
-		llvmFn.AddAttributeAtIndex(3, c.ctx.CreateEnumAttribute(llvm.AttributeKindID(llvmutil.NoCaptureAttrName()), 0))
+		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
+		llvmFn.AddAttributeAtIndex(3, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
 	case "runtime.hashmapGet":
 		// The key (param 2) is read-only and never captured.
 		// The value (param 3) is written to (receives the result) but never captured.
-		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID(llvmutil.NoCaptureAttrName()), 0))
-		llvmFn.AddAttributeAtIndex(3, c.ctx.CreateEnumAttribute(llvm.AttributeKindID(llvmutil.NoCaptureAttrName()), 0))
+		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
+		llvmFn.AddAttributeAtIndex(3, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
 	case "runtime.hashmapDelete":
 		// The key (param 2) is read-only and never captured.
-		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID(llvmutil.NoCaptureAttrName()), 0))
+		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
 	case "runtime.hashmapGenericSet":
 		// Same as hashmapBinarySet: key (param 2) and value (param 3) are
 		// not captured.
-		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID(llvmutil.NoCaptureAttrName()), 0))
-		llvmFn.AddAttributeAtIndex(3, c.ctx.CreateEnumAttribute(llvm.AttributeKindID(llvmutil.NoCaptureAttrName()), 0))
+		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
+		llvmFn.AddAttributeAtIndex(3, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
 	case "runtime.hashmapGenericGet":
-		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID(llvmutil.NoCaptureAttrName()), 0))
-		llvmFn.AddAttributeAtIndex(3, c.ctx.CreateEnumAttribute(llvm.AttributeKindID(llvmutil.NoCaptureAttrName()), 0))
+		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
+		llvmFn.AddAttributeAtIndex(3, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
 	case "runtime.hashmapGenericDelete":
-		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID(llvmutil.NoCaptureAttrName()), 0))
+		llvmFn.AddAttributeAtIndex(2, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
 	case "runtime.trackPointer":
 		// This function is necessary for tracking pointers on the stack in a
 		// portable way (see gc_stack_portable.go). Indicate to the optimizer
 		// that the only thing we'll do is read the pointer.
-		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID(llvmutil.NoCaptureAttrName()), 0))
+		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
 		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("readonly"), 0))
 	case "__mulsi3", "__divmodsi4", "__udivmodsi4":
 		if strings.Split(c.Triple, "-")[0] == "avr" {
@@ -267,7 +255,7 @@ func (c *compilerContext) getFunction(fn *ssa.Function) (llvm.Type, llvm.Value)

 			llvmFn.AddFunctionAttr(c.ctx.CreateStringAttribute("wasm-import-name", info.wasmName))
 		}
-		nocaptureKind := llvm.AttributeKindID(llvmutil.NoCaptureAttrName())
+		nocaptureKind := llvm.AttributeKindID("nocapture")
 		nocapture := c.ctx.CreateEnumAttribute(nocaptureKind, 0)
 		for i, typ := range paramTypes {
 			if typ.TypeKind() == llvm.PointerTypeKind {
@@ -331,7 +319,7 @@ func (c *compilerContext) getFunctionInfo(f *ssa.Function) functionInfo {
 	}
 	info := functionInfo{
 		// Pick the default linkName.
-		linkName: c.canonicalFunctionName(f),
+		linkName: f.RelString(nil),
 	}

 	// Check for a few runtime functions that are treated specially.
@@ -358,18 +346,6 @@ func (c *compilerContext) getFunctionInfo(f *ssa.Function) functionInfo {
 	return info
 }

-func (c *compilerContext) canonicalFunctionName(f *ssa.Function) string {
-	typeArgs := f.TypeArgs()
-	if len(typeArgs) == 0 {
-		return f.RelString(nil)
-	}
-	parts := make([]string, len(typeArgs))
-	for i, ta := range typeArgs {
-		parts[i], _ = c.getTypeCodeName(ta)
-	}
-	return f.Origin().RelString(nil) + "[" + strings.Join(parts, ",") + "]"
-}
-
 // parsePragmas is used by getFunctionInfo to parse function pragmas such as
 // //export or //go:noinline.
 func (c *compilerContext) parsePragmas(info *functionInfo, f *ssa.Function) {
@@ -396,51 +372,6 @@ func (c *compilerContext) parsePragmas(info *functionInfo, f *ssa.Function) {
 		}
 	}

-	// Also scan file-level //go:linkname directives. These appear as
-	// free-standing comments in *ast.File.Comments (not attached to any
-	// declaration), and are used by modern golang.org/x/sys/unix and others.
-	// Function-attached directives (above) take precedence — we only add
-	// file-level ones if no doc-comment linkname was found for this function.
-	//
-	// TODO: the hasUnsafeImport gate enforced downstream (see the
-	// //go:linkname case below) is package-level. gc enforces it per
-	// file, on the file containing the directive. For file-level
-	// linknames this is more important than for function-attached ones,
-	// because the directive can live in a file separate from the
-	// function. A stricter implementation would check whether the file
-	// returned by fileForFunc imports "unsafe", not whether any file in
-	// the package does.
-	hasFunctionLinkname := false
-	for _, comment := range pragmas {
-		if strings.HasPrefix(comment.Text, "//go:linkname ") {
-			parts := strings.Fields(comment.Text)
-			if len(parts) == 3 && parts[1] == f.Name() {
-				hasFunctionLinkname = true
-				break
-			}
-		}
-	}
-	if !hasFunctionLinkname {
-		if file := c.fileForFunc(f); file != nil {
-			for _, group := range file.Comments {
-				// Skip the function's own doc comment — already handled above.
-				if decl, ok := syntax.(*ast.FuncDecl); ok && group == decl.Doc {
-					continue
-				}
-				for _, comment := range group.List {
-					if !strings.HasPrefix(comment.Text, "//go:linkname ") {
-						continue
-					}
-					parts := strings.Fields(comment.Text)
-					if len(parts) != 3 || parts[1] != f.Name() {
-						continue
-					}
-					pragmas = append(pragmas, comment)
-				}
-			}
-		}
-	}
-
 	// Parse each pragma.
 	for _, comment := range pragmas {
 		parts := strings.Fields(comment.Text)
@@ -458,7 +389,7 @@ func (c *compilerContext) parsePragmas(info *functionInfo, f *ssa.Function) {
 			info.wasmName = info.linkName
 			info.exported = true
 		case "//go:interrupt":
-			if slices.Contains(f.Pkg.Pkg.Imports(), types.Unsafe) {
+			if hasUnsafeImport(f.Pkg.Pkg) {
 				info.interrupt = true
 			}
 		case "//go:wasm-module":
@@ -512,7 +443,7 @@ func (c *compilerContext) parsePragmas(info *functionInfo, f *ssa.Function) {
 			info.inline = inlineHint
 		case "//go:noinline":
 			info.inline = inlineNone
-		case "//go:linkname", "//go:linknamestd":
+		case "//go:linkname":
 			if len(parts) != 3 || parts[1] != f.Name() {
 				continue
 			}
@@ -520,14 +451,14 @@ func (c *compilerContext) parsePragmas(info *functionInfo, f *ssa.Function) {
 			// This is a slightly looser requirement than what gc uses: gc
 			// requires the file to import "unsafe", not the package as a
 			// whole.
-			if slices.Contains(f.Pkg.Pkg.Imports(), types.Unsafe) {
+			if hasUnsafeImport(f.Pkg.Pkg) {
 				info.linkName = parts[2]
 			}
 		case "//go:section":
 			// Only enable go:section when the package imports "unsafe".
 			// go:section also implies go:noinline since inlining could
 			// move the code to a different section than that requested.
-			if len(parts) == 2 && slices.Contains(f.Pkg.Pkg.Imports(), types.Unsafe) {
+			if len(parts) == 2 && hasUnsafeImport(f.Pkg.Pkg) {
 				info.section = parts[1]
 				info.inline = inlineNone
 			}
@@ -536,7 +467,7 @@ func (c *compilerContext) parsePragmas(info *functionInfo, f *ssa.Function) {
 			// runtime functions.
 			// This is somewhat dangerous and thus only imported in packages
 			// that import unsafe.
-			if slices.Contains(f.Pkg.Pkg.Imports(), types.Unsafe) {
+			if hasUnsafeImport(f.Pkg.Pkg) {
 				info.nobounds = true
 			}
 		case "//go:noescape":
@@ -636,8 +567,8 @@ func (c *compilerContext) isValidWasmType(typ types.Type, site wasmSite) bool {
 				hasHostLayout = false // package structs added in go1.23
 			}
 		}
-		for field := range typ.Fields() {
-			ftyp := field.Type()
+		for i := 0; i < typ.NumFields(); i++ {
+			ftyp := typ.Field(i).Type()
 			if types.Unalias(ftyp).String() == "structs.HostLayout" {
 				hasHostLayout = true
 				continue
@@ -669,8 +600,8 @@ func getParams(sig *types.Signature) []*types.Var {
 	if sig.Recv() != nil {
 		params = append(params, sig.Recv())
 	}
-	for v := range sig.Params().Variables() {
-		params = append(params, v)
+	for i := 0; i < sig.Params().Len(); i++ {
+		params = append(params, sig.Params().At(i))
 	}
 	return params
 }
@@ -735,34 +666,6 @@ type globalInfo struct {
 	section  string // go:section
 }

-// fileForFunc returns the *ast.File that contains the declaration of f, or
-// nil if it cannot be determined. File-level pragmas are only consulted for
-// functions in the package currently being compiled — functions imported from
-// other packages have their file-level pragmas processed when those packages
-// are compiled.
-func (c *compilerContext) fileForFunc(f *ssa.Function) *ast.File {
-	if c.loaderPkg == nil || f.Pkg == nil || f.Pkg.Pkg != c.loaderPkg.Pkg {
-		return nil
-	}
-	syntax := f.Syntax()
-	if f.Origin() != nil {
-		syntax = f.Origin().Syntax()
-	}
-	if syntax == nil {
-		return nil
-	}
-	pos := syntax.Pos()
-	if !pos.IsValid() {
-		return nil
-	}
-	for _, file := range c.loaderPkg.Files {
-		if file.FileStart <= pos && pos < file.FileEnd {
-			return file
-		}
-	}
-	return nil
-}
-
 // loadASTComments loads comments on globals from the AST, for use later in the
 // program. In particular, they are required for //go:extern pragmas on globals.
 func (c *compilerContext) loadASTComments(pkg *loader.Package) {
@@ -801,7 +704,10 @@ func (c *compilerContext) getGlobal(g *ssa.Global) llvm.Value {
 		llvmGlobal = llvm.AddGlobal(c.mod, llvmType, info.linkName)

 		// Set alignment from the //go:align comment.
-		alignment := max(info.align, c.targetData.ABITypeAlignment(llvmType))
+		alignment := c.targetData.ABITypeAlignment(llvmType)
+		if info.align > alignment {
+			alignment = info.align
+		}
 		if alignment <= 0 || alignment&(alignment-1) != 0 {
 			// Check for power-of-two (or 0).
 			// See: https://stackoverflow.com/a/108360
@@ -875,7 +781,7 @@ func (info *globalInfo) parsePragmas(doc *ast.CommentGroup, c *compilerContext,
 			// This is a slightly looser requirement than what gc uses: gc
 			// requires the file to import "unsafe", not the package as a
 			// whole.
-			if slices.Contains(g.Pkg.Pkg.Imports(), types.Unsafe) {
+			if hasUnsafeImport(g.Pkg.Pkg) {
 				info.linkName = parts[2]
 			}
 		}
@@ -891,3 +797,13 @@ func getAllMethods(prog *ssa.Program, typ types.Type) []*types.Selection {
 	}
 	return methods
 }
+
+// Return true if this package imports "unsafe", false otherwise.
+func hasUnsafeImport(pkg *types.Package) bool {
+	for _, imp := range pkg.Imports() {
+		if imp == types.Unsafe {
+			return true
+		}
+	}
+	return false
+}
@@ -26,25 +26,24 @@ func (b *builder) createRawSyscall(call *ssa.CallCommon) (llvm.Value, error) {
 		argTypes := []llvm.Type{b.uintptrType}
 		// Constraints will look something like:
 		//   "={rax},0,{rdi},{rsi},{rdx},{r10},{r8},{r9},~{rcx},~{r11}"
-		var constraints strings.Builder
-		constraints.WriteString("={rax},0")
+		constraints := "={rax},0"
 		for i, arg := range call.Args[1:] {
-			constraints.WriteString("," + [...]string{
+			constraints += "," + [...]string{
 				"{rdi}",
 				"{rsi}",
 				"{rdx}",
 				"{r10}",
 				"{r8}",
 				"{r9}",
-			}[i])
+			}[i]
 			llvmValue := b.getValue(arg, getPos(call))
 			args = append(args, llvmValue)
 			argTypes = append(argTypes, llvmValue.Type())
 		}
 		// rcx and r11 are clobbered by the syscall, so make sure they are not used
-		constraints.WriteString(",~{rcx},~{r11}")
+		constraints += ",~{rcx},~{r11}"
 		fnType := llvm.FunctionType(b.uintptrType, argTypes, false)
-		target := llvm.InlineAsm(fnType, "syscall", constraints.String(), true, false, llvm.InlineAsmDialectIntel, false)
+		target := llvm.InlineAsm(fnType, "syscall", constraints, true, false, llvm.InlineAsmDialectIntel, false)
 		return b.CreateCall(fnType, target, args, ""), nil

 	case b.GOARCH == "386" && b.GOOS == "linux":
@@ -56,23 +55,22 @@ func (b *builder) createRawSyscall(call *ssa.CallCommon) (llvm.Value, error) {
 		argTypes := []llvm.Type{b.uintptrType}
 		// Constraints will look something like:
 		//   "={eax},0,{ebx},{ecx},{edx},{esi},{edi},{ebp}"
-		var constraints strings.Builder
-		constraints.WriteString("={eax},0")
+		constraints := "={eax},0"
 		for i, arg := range call.Args[1:] {
-			constraints.WriteString("," + [...]string{
+			constraints += "," + [...]string{
 				"{ebx}",
 				"{ecx}",
 				"{edx}",
 				"{esi}",
 				"{edi}",
 				"{ebp}",
-			}[i])
+			}[i]
 			llvmValue := b.getValue(arg, getPos(call))
 			args = append(args, llvmValue)
 			argTypes = append(argTypes, llvmValue.Type())
 		}
 		fnType := llvm.FunctionType(b.uintptrType, argTypes, false)
-		target := llvm.InlineAsm(fnType, "int 0x80", constraints.String(), true, false, llvm.InlineAsmDialectIntel, false)
+		target := llvm.InlineAsm(fnType, "int 0x80", constraints, true, false, llvm.InlineAsmDialectIntel, false)
 		return b.CreateCall(fnType, target, args, ""), nil

 	case b.GOARCH == "arm" && b.GOOS == "linux":
@@ -90,10 +88,9 @@ func (b *builder) createRawSyscall(call *ssa.CallCommon) (llvm.Value, error) {
 		argTypes := []llvm.Type{}
 		// Constraints will look something like:
 		//   ={r0},0,{r1},{r2},{r7},~{r3}
-		var constraints strings.Builder
-		constraints.WriteString("={r0}")
+		constraints := "={r0}"
 		for i, arg := range call.Args[1:] {
-			constraints.WriteString("," + [...]string{
+			constraints += "," + [...]string{
 				"0", // tie to output
 				"{r1}",
 				"{r2}",
@@ -101,20 +98,20 @@ func (b *builder) createRawSyscall(call *ssa.CallCommon) (llvm.Value, error) {
 				"{r4}",
 				"{r5}",
 				"{r6}",
-			}[i])
+			}[i]
 			llvmValue := b.getValue(arg, getPos(call))
 			args = append(args, llvmValue)
 			argTypes = append(argTypes, llvmValue.Type())
 		}
 		args = append(args, num)
 		argTypes = append(argTypes, b.uintptrType)
-		constraints.WriteString(",{r7}") // syscall number
+		constraints += ",{r7}" // syscall number
 		for i := len(call.Args) - 1; i < 4; i++ {
 			// r0-r3 get clobbered after the syscall returns
-			constraints.WriteString(",~{r" + strconv.Itoa(i) + "}")
+			constraints += ",~{r" + strconv.Itoa(i) + "}"
 		}
 		fnType := llvm.FunctionType(b.uintptrType, argTypes, false)
-		target := llvm.InlineAsm(fnType, "svc #0", constraints.String(), true, false, 0, false)
+		target := llvm.InlineAsm(fnType, "svc #0", constraints, true, false, 0, false)
 		return b.CreateCall(fnType, target, args, ""), nil

 	case b.GOARCH == "arm64" && b.GOOS == "linux":
@@ -123,32 +120,31 @@ func (b *builder) createRawSyscall(call *ssa.CallCommon) (llvm.Value, error) {
 		argTypes := []llvm.Type{}
 		// Constraints will look something like:
 		//   ={x0},0,{x1},{x2},{x8},~{x3},~{x4},~{x5},~{x6},~{x7},~{x16},~{x17}
-		var constraints strings.Builder
-		constraints.WriteString("={x0}")
+		constraints := "={x0}"
 		for i, arg := range call.Args[1:] {
-			constraints.WriteString("," + [...]string{
+			constraints += "," + [...]string{
 				"0", // tie to output
 				"{x1}",
 				"{x2}",
 				"{x3}",
 				"{x4}",
 				"{x5}",
-			}[i])
+			}[i]
 			llvmValue := b.getValue(arg, getPos(call))
 			args = append(args, llvmValue)
 			argTypes = append(argTypes, llvmValue.Type())
 		}
 		args = append(args, num)
 		argTypes = append(argTypes, b.uintptrType)
-		constraints.WriteString(",{x8}") // syscall number
+		constraints += ",{x8}" // syscall number
 		for i := len(call.Args) - 1; i < 8; i++ {
 			// x0-x7 may get clobbered during the syscall following the aarch64
 			// calling convention.
-			constraints.WriteString(",~{x" + strconv.Itoa(i) + "}")
+			constraints += ",~{x" + strconv.Itoa(i) + "}"
 		}
-		constraints.WriteString(",~{x16},~{x17}") // scratch registers
+		constraints += ",~{x16},~{x17}" // scratch registers
 		fnType := llvm.FunctionType(b.uintptrType, argTypes, false)
-		target := llvm.InlineAsm(fnType, "svc #0", constraints.String(), true, false, 0, false)
+		target := llvm.InlineAsm(fnType, "svc #0", constraints, true, false, 0, false)
 		return b.CreateCall(fnType, target, args, ""), nil

 	case (b.GOARCH == "mips" || b.GOARCH == "mipsle") && b.GOOS == "linux":
@@ -167,8 +163,7 @@ func (b *builder) createRawSyscall(call *ssa.CallCommon) (llvm.Value, error) {
 		// faster and smaller code.
 		args := []llvm.Value{num}
 		argTypes := []llvm.Type{b.uintptrType}
-		var constraints strings.Builder
-		constraints.WriteString("={$2},={$7},0")
+		constraints := "={$2},={$7},0"
 		syscallParams := call.Args[1:]
 		if len(syscallParams) > 7 {
 			// There is one syscall that uses 7 parameters: sync_file_range.
@@ -177,7 +172,7 @@ func (b *builder) createRawSyscall(call *ssa.CallCommon) (llvm.Value, error) {
 			syscallParams = syscallParams[:7]
 		}
 		for i, arg := range syscallParams {
-			constraints.WriteString("," + [...]string{
+			constraints += "," + [...]string{
 				"{$4}", // arg1
 				"{$5}", // arg2
 				"{$6}", // arg3
@@ -185,7 +180,7 @@ func (b *builder) createRawSyscall(call *ssa.CallCommon) (llvm.Value, error) {
 				"r",    // arg5 on the stack
 				"r",    // arg6 on the stack
 				"r",    // arg7 on the stack
-			}[i])
+			}[i]
 			llvmValue := b.getValue(arg, getPos(call))
 			args = append(args, llvmValue)
 			argTypes = append(argTypes, llvmValue.Type())
@@ -226,10 +221,10 @@ func (b *builder) createRawSyscall(call *ssa.CallCommon) (llvm.Value, error) {
 				"addu $$sp, $$sp, 32\n" +
 				".set at\n"
 		}
-		constraints.WriteString(",~{$3},~{$4},~{$5},~{$6},~{$8},~{$9},~{$10},~{$11},~{$12},~{$13},~{$14},~{$15},~{$24},~{$25},~{hi},~{lo},~{memory}")
+		constraints += ",~{$3},~{$4},~{$5},~{$6},~{$8},~{$9},~{$10},~{$11},~{$12},~{$13},~{$14},~{$15},~{$24},~{$25},~{hi},~{lo},~{memory}"
 		returnType := b.ctx.StructType([]llvm.Type{b.uintptrType, b.uintptrType}, false)
 		fnType := llvm.FunctionType(returnType, argTypes, false)
-		target := llvm.InlineAsm(fnType, asm, constraints.String(), true, true, 0, false)
+		target := llvm.InlineAsm(fnType, asm, constraints, true, true, 0, false)
 		call := b.CreateCall(fnType, target, args, "")
 		resultCode := b.CreateExtractValue(call, 0, "") // r2
 		errorFlag := b.CreateExtractValue(call, 1, "")  // r7
@@ -66,11 +66,6 @@ func complexSub(x, y complex64) complex64 {
 	return x - y
 }

-func shiftNested(x uint64) uint64 {
-	k := 3
-	return x >> (1 << k) // https://github.com/tinygo-org/tinygo/issues/5496
-}
-
 func complexMul(x, y complex64) complex64 {
 	return x * y
 }
@@ -176,13 +176,6 @@ entry:
  ret { float, float } %3
 }

-; Function Attrs: nounwind
-define hidden i64 @main.shiftNested(i64 %x, ptr %context) unnamed_addr #1 {
-entry:
-  %0 = lshr i64 %x, 8
-  ret i64 %0
-}
-
 ; Function Attrs: nounwind
 define hidden { float, float } @main.complexMul(float %x.r, float %x.i, float %y.r, float %y.i, ptr %context) unnamed_addr #1 {
 entry:
@@ -19,33 +19,33 @@ define hidden void @main.chanIntSend(ptr dereferenceable_or_null(36) %ch, ptr %c
 entry:
  %chan.op = alloca %runtime.channelOp, align 8
  %chan.value = alloca i32, align 4
-  call void @llvm.lifetime.start.p0(ptr nonnull %chan.value)
+  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %chan.value)
  store i32 3, ptr %chan.value, align 4
-  call void @llvm.lifetime.start.p0(ptr nonnull %chan.op)
+  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %chan.op)
  call void @runtime.chanSend(ptr %ch, ptr nonnull %chan.value, ptr nonnull %chan.op, ptr undef) #3
-  call void @llvm.lifetime.end.p0(ptr nonnull %chan.op)
-  call void @llvm.lifetime.end.p0(ptr nonnull %chan.value)
+  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %chan.op)
+  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %chan.value)
  ret void
 }

 ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
-declare void @llvm.lifetime.start.p0(ptr nocapture) #2
+declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

 declare void @runtime.chanSend(ptr dereferenceable_or_null(36), ptr, ptr dereferenceable_or_null(16), ptr) #0

 ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
-declare void @llvm.lifetime.end.p0(ptr nocapture) #2
+declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

 ; Function Attrs: nounwind
 define hidden void @main.chanIntRecv(ptr dereferenceable_or_null(36) %ch, ptr %context) unnamed_addr #1 {
 entry:
  %chan.op = alloca %runtime.channelOp, align 8
  %chan.value = alloca i32, align 4
-  call void @llvm.lifetime.start.p0(ptr nonnull %chan.value)
-  call void @llvm.lifetime.start.p0(ptr nonnull %chan.op)
+  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %chan.value)
+  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %chan.op)
  %0 = call i1 @runtime.chanRecv(ptr %ch, ptr nonnull %chan.value, ptr nonnull %chan.op, ptr undef) #3
-  call void @llvm.lifetime.end.p0(ptr nonnull %chan.value)
-  call void @llvm.lifetime.end.p0(ptr nonnull %chan.op)
+  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %chan.value)
+  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %chan.op)
  ret void
 }

@@ -55,9 +55,9 @@ declare i1 @runtime.chanRecv(ptr dereferenceable_or_null(36), ptr, ptr dereferen
 define hidden void @main.chanZeroSend(ptr dereferenceable_or_null(36) %ch, ptr %context) unnamed_addr #1 {
 entry:
  %chan.op = alloca %runtime.channelOp, align 8
-  call void @llvm.lifetime.start.p0(ptr nonnull %chan.op)
+  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %chan.op)
  call void @runtime.chanSend(ptr %ch, ptr null, ptr nonnull %chan.op, ptr undef) #3
-  call void @llvm.lifetime.end.p0(ptr nonnull %chan.op)
+  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %chan.op)
  ret void
 }

@@ -65,9 +65,9 @@ entry:
 define hidden void @main.chanZeroRecv(ptr dereferenceable_or_null(36) %ch, ptr %context) unnamed_addr #1 {
 entry:
  %chan.op = alloca %runtime.channelOp, align 8
-  call void @llvm.lifetime.start.p0(ptr nonnull %chan.op)
+  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %chan.op)
  %0 = call i1 @runtime.chanRecv(ptr %ch, ptr null, ptr nonnull %chan.op, ptr undef) #3
-  call void @llvm.lifetime.end.p0(ptr nonnull %chan.op)
+  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %chan.op)
  ret void
 }

@@ -77,7 +77,7 @@ entry:
  %select.states.alloca = alloca [2 x %runtime.chanSelectState], align 8
  %select.send.value = alloca i32, align 4
  store i32 1, ptr %select.send.value, align 4
-  call void @llvm.lifetime.start.p0(ptr nonnull %select.states.alloca)
+  call void @llvm.lifetime.start.p0(i64 16, ptr nonnull %select.states.alloca)
  store ptr %ch1, ptr %select.states.alloca, align 4
  %select.states.alloca.repack1 = getelementptr inbounds nuw i8, ptr %select.states.alloca, i32 4
  store ptr %select.send.value, ptr %select.states.alloca.repack1, align 4
@@ -86,7 +86,7 @@ entry:
  %.repack3 = getelementptr inbounds nuw i8, ptr %select.states.alloca, i32 12
  store ptr null, ptr %.repack3, align 4
  %select.result = call { i32, i1 } @runtime.chanSelect(ptr undef, ptr nonnull %select.states.alloca, i32 2, i32 2, ptr null, i32 0, i32 0, ptr undef) #3
-  call void @llvm.lifetime.end.p0(ptr nonnull %select.states.alloca)
+  call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %select.states.alloca)
  %1 = extractvalue { i32, i1 } %select.result, 0
  %2 = icmp eq i32 %1, 0
  br i1 %2, label %select.done, label %select.next
@@ -278,7 +278,7 @@ entry:

 for.body:                                         ; preds = %for.body, %entry
  %defer.next = load ptr, ptr %deferPtr, align 4
-  %defer.alloc.call = call align 4 dereferenceable(12) ptr @runtime.alloc(i32 12, ptr nonnull inttoptr (i32 135 to ptr), ptr undef) #4
+  %defer.alloc.call = call dereferenceable(12) ptr @runtime.alloc(i32 12, ptr null, ptr undef) #4
  store i32 0, ptr %defer.alloc.call, align 4
  %defer.alloc.call.repack1 = getelementptr inbounds nuw i8, ptr %defer.alloc.call, i32 4
  store ptr %defer.next, ptr %defer.alloc.call.repack1, align 4
@@ -330,7 +330,7 @@ for.loop:                                         ; preds = %for.body, %entry

 for.body:                                         ; preds = %for.loop
  %defer.next = load ptr, ptr %deferPtr, align 4
-  %defer.alloc.call = call align 4 dereferenceable(12) ptr @runtime.alloc(i32 12, ptr nonnull inttoptr (i32 135 to ptr), ptr undef) #4
+  %defer.alloc.call = call dereferenceable(12) ptr @runtime.alloc(i32 12, ptr null, ptr undef) #4
  store i32 0, ptr %defer.alloc.call, align 4
  %defer.alloc.call.repack13 = getelementptr inbounds nuw i8, ptr %defer.alloc.call, i32 4
  store ptr %defer.next, ptr %defer.alloc.call.repack13, align 4
@@ -131,7 +131,7 @@ entry:
 define hidden %runtime._interface @main.makeInterface(double %v.r, double %v.i, ptr %context) unnamed_addr #1 {
 entry:
  %stackalloc = alloca i8, align 1
-  %0 = call align 8 dereferenceable(16) ptr @runtime.alloc(i32 16, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
+  %0 = call align 8 dereferenceable(16) ptr @runtime.alloc(i32 16, ptr null, ptr undef) #3
  call void @runtime.trackPointer(ptr nonnull %0, ptr nonnull %stackalloc, ptr undef) #3
  store double %v.r, ptr %0, align 8
  %.repack1 = getelementptr inbounds nuw i8, ptr %0, i32 8
@@ -19,49 +19,12 @@ func Add[T Coord](a, b Point[T]) Point[T] {
 	}
 }

-func aliasSize[F float32 | float64]() uintptr {
-	return unsafe.Sizeof(F(0))
-}
-
-func aliasSize32() uintptr {
-	type F = float32
-	return aliasSize[F]()
-}
-
-func aliasSize64() uintptr {
-	type F = float64
-	return aliasSize[F]()
-}
-
-type aliasMethodResult[F float32 | float64] struct {
-	Value F
-}
-
-type aliasMethodValue[F float32 | float64] struct{}
-
-func (aliasMethodValue[F]) Get() aliasMethodResult[F] {
-	return aliasMethodResult[F]{}
-}
-
 func main() {
 	var af, bf Point[float32]
 	Add(af, bf)

 	var ai, bi Point[int]
 	Add(ai, bi)
-
-	checkSize(aliasSize32())
-	checkSize(aliasSize64())
 }

 func checkSize(uintptr)
-
-func checkBool(bool)
-
-func aliasMethod32(x any) {
-	type F = float32
-	_, ok := x.(interface {
-		Get() aliasMethodResult[F]
-	})
-	checkBool(ok)
-}
@@ -14,62 +14,32 @@ entry:
  ret void
 }

-; Function Attrs: nounwind
-define hidden i32 @main.aliasSize32(ptr %context) unnamed_addr #1 {
-entry:
-  %0 = call i32 @"main.aliasSize[basic:float32]"(ptr undef)
-  ret i32 %0
-}
-
-; Function Attrs: nounwind
-define linkonce_odr hidden i32 @"main.aliasSize[basic:float32]"(ptr %context) unnamed_addr #1 {
-entry:
-  ret i32 4
-}
-
-; Function Attrs: nounwind
-define hidden i32 @main.aliasSize64(ptr %context) unnamed_addr #1 {
-entry:
-  %0 = call i32 @"main.aliasSize[basic:float64]"(ptr undef)
-  ret i32 %0
-}
-
-; Function Attrs: nounwind
-define linkonce_odr hidden i32 @"main.aliasSize[basic:float64]"(ptr %context) unnamed_addr #1 {
-entry:
-  ret i32 8
-}
-
 ; Function Attrs: nounwind
 define hidden void @main.main(ptr %context) unnamed_addr #1 {
 entry:
-  %0 = call %"main.Point[float32]" @"main.Add[basic:float32]"(float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, ptr undef)
-  %1 = call %"main.Point[int]" @"main.Add[basic:int]"(i32 0, i32 0, i32 0, i32 0, ptr undef)
-  %2 = call i32 @main.aliasSize32(ptr undef)
-  call void @main.checkSize(i32 %2, ptr undef) #4
-  %3 = call i32 @main.aliasSize64(ptr undef)
-  call void @main.checkSize(i32 %3, ptr undef) #4
+  %0 = call %"main.Point[float32]" @"main.Add[float32]"(float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, ptr undef)
+  %1 = call %"main.Point[int]" @"main.Add[int]"(i32 0, i32 0, i32 0, i32 0, ptr undef)
  ret void
 }

 ; Function Attrs: nounwind
-define linkonce_odr hidden %"main.Point[float32]" @"main.Add[basic:float32]"(float %a.X, float %a.Y, float %b.X, float %b.Y, ptr %context) unnamed_addr #1 {
+define linkonce_odr hidden %"main.Point[float32]" @"main.Add[float32]"(float %a.X, float %a.Y, float %b.X, float %b.Y, ptr %context) unnamed_addr #1 {
 entry:
  %stackalloc = alloca i8, align 1
-  %a = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #4
-  call void @runtime.trackPointer(ptr nonnull %a, ptr nonnull %stackalloc, ptr undef) #4
+  %a = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
+  call void @runtime.trackPointer(ptr nonnull %a, ptr nonnull %stackalloc, ptr undef) #3
  store float %a.X, ptr %a, align 4
  %a.repack5 = getelementptr inbounds nuw i8, ptr %a, i32 4
  store float %a.Y, ptr %a.repack5, align 4
-  %b = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #4
-  call void @runtime.trackPointer(ptr nonnull %b, ptr nonnull %stackalloc, ptr undef) #4
+  %b = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
+  call void @runtime.trackPointer(ptr nonnull %b, ptr nonnull %stackalloc, ptr undef) #3
  store float %b.X, ptr %b, align 4
  %b.repack7 = getelementptr inbounds nuw i8, ptr %b, i32 4
  store float %b.Y, ptr %b.repack7, align 4
-  call void @main.checkSize(i32 4, ptr undef) #4
-  call void @main.checkSize(i32 8, ptr undef) #4
-  %complit = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #4
-  call void @runtime.trackPointer(ptr nonnull %complit, ptr nonnull %stackalloc, ptr undef) #4
+  call void @main.checkSize(i32 4, ptr undef) #3
+  call void @main.checkSize(i32 8, ptr undef) #3
+  %complit = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
+  call void @runtime.trackPointer(ptr nonnull %complit, ptr nonnull %stackalloc, ptr undef) #3
  br i1 false, label %deref.throw, label %deref.next

 deref.next:                                       ; preds = %entry
@@ -116,23 +86,23 @@ declare void @main.checkSize(i32, ptr) #0
 declare void @runtime.nilPanic(ptr) #0

 ; Function Attrs: nounwind
-define linkonce_odr hidden %"main.Point[int]" @"main.Add[basic:int]"(i32 %a.X, i32 %a.Y, i32 %b.X, i32 %b.Y, ptr %context) unnamed_addr #1 {
+define linkonce_odr hidden %"main.Point[int]" @"main.Add[int]"(i32 %a.X, i32 %a.Y, i32 %b.X, i32 %b.Y, ptr %context) unnamed_addr #1 {
 entry:
  %stackalloc = alloca i8, align 1
-  %a = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #4
-  call void @runtime.trackPointer(ptr nonnull %a, ptr nonnull %stackalloc, ptr undef) #4
+  %a = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
+  call void @runtime.trackPointer(ptr nonnull %a, ptr nonnull %stackalloc, ptr undef) #3
  store i32 %a.X, ptr %a, align 4
  %a.repack5 = getelementptr inbounds nuw i8, ptr %a, i32 4
  store i32 %a.Y, ptr %a.repack5, align 4
-  %b = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #4
-  call void @runtime.trackPointer(ptr nonnull %b, ptr nonnull %stackalloc, ptr undef) #4
+  %b = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
+  call void @runtime.trackPointer(ptr nonnull %b, ptr nonnull %stackalloc, ptr undef) #3
  store i32 %b.X, ptr %b, align 4
  %b.repack7 = getelementptr inbounds nuw i8, ptr %b, i32 4
  store i32 %b.Y, ptr %b.repack7, align 4
-  call void @main.checkSize(i32 4, ptr undef) #4
-  call void @main.checkSize(i32 8, ptr undef) #4
-  %complit = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #4
-  call void @runtime.trackPointer(ptr nonnull %complit, ptr nonnull %stackalloc, ptr undef) #4
+  call void @main.checkSize(i32 4, ptr undef) #3
+  call void @main.checkSize(i32 8, ptr undef) #3
+  %complit = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
+  call void @runtime.trackPointer(ptr nonnull %complit, ptr nonnull %stackalloc, ptr undef) #3
  br i1 false, label %deref.throw, label %deref.next

 deref.next:                                       ; preds = %entry
@@ -171,26 +141,7 @@ deref.throw:                                      ; preds = %store.next, %deref.
  unreachable
 }

-declare void @main.checkBool(i1, ptr) #0
-
-; Function Attrs: nounwind
-define hidden void @main.aliasMethod32(ptr %x.typecode, ptr %x.value, ptr %context) unnamed_addr #1 {
-entry:
-  %0 = call i1 @"interface:{Get:func:{}{named:main.aliasMethodResult[basic:float32]}}.$typeassert"(ptr %x.typecode) #4
-  br i1 %0, label %typeassert.ok, label %typeassert.next
-
-typeassert.next:                                  ; preds = %typeassert.ok, %entry
-  call void @main.checkBool(i1 %0, ptr undef) #4
-  ret void
-
-typeassert.ok:                                    ; preds = %entry
-  br label %typeassert.next
-}
-
-declare i1 @"interface:{Get:func:{}{named:main.aliasMethodResult[basic:float32]}}.$typeassert"(ptr) #3
-
 attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
 attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
 attributes #2 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #3 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-methods"="reflect/methods.Get:func:{}{named:main.aliasMethodResult[basic:float32]}" }
-attributes #4 = { nounwind }
+attributes #3 = { nounwind }
@@ -1,24 +0,0 @@
-package main
-
-// genericMethod has both a regular method and a "generic method": a method
-// with its own type parameter, independent of any type parameter on the
-// receiver. This is a Go 1.27 feature (see math/rand/v2.Rand.N for a
-// real-world example). Boxing such a value into an interface must not try to
-// encode the generic method's type-parameterized signature into a type code.
-type genericMethod struct{}
-
-func (t genericMethod) Regular(n int) int { return n }
-
-func (t genericMethod) GenericParam[X int | int64](n X) X { return n }
-
-// onlyGenericMethod's only method is generic, so its runtime type must have
-// an empty method set (hasMethodSet must become false, not just numMethods).
-type onlyGenericMethod struct{}
-
-func (t onlyGenericMethod) GenericParam[X int | int64](n X) X { return n }
-
-func useGenericMethods() (any, any) {
-	var g genericMethod
-	var o onlyGenericMethod
-	return any(g), any(o)
-}
@@ -1,67 +0,0 @@
-; ModuleID = 'go1.27.go'
-source_filename = "go1.27.go"
-target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
-target triple = "wasm32-unknown-wasi"
-
-%runtime.structField = type { ptr, ptr }
-%runtime._interface = type { ptr, ptr }
-
-@"reflect/types.signature:Regular:func:{basic:int}{basic:int}" = linkonce_odr constant i8 0, align 1
-@"reflect/types.type:named:main.genericMethod" = linkonce_odr constant { ptr, i8, i16, ptr, ptr, ptr, { i32, [1 x ptr] }, [19 x i8] } { ptr @"named:main.genericMethod$methodset", i8 122, i16 -32767, ptr getelementptr ({ ptr, i8, i16, ptr, { i32, [1 x ptr] } }, ptr @"reflect/types.type:pointer:named:main.genericMethod", i32 0, i32 1), ptr @"reflect/types.type:struct:{}", ptr @"reflect/types.type.pkgpath:main", { i32, [1 x ptr] } { i32 1, [1 x ptr] [ptr @"reflect/types.signature:Regular:func:{basic:int}{basic:int}"] }, [19 x i8] c"main.genericMethod\00" }, align 4
-@"reflect/types.type.pkgpath:main" = linkonce_odr unnamed_addr constant [5 x i8] c"main\00", align 1
-@"reflect/types.type:pointer:named:main.genericMethod" = linkonce_odr constant { ptr, i8, i16, ptr, { i32, [1 x ptr] } } { ptr @"pointer:named:main.genericMethod$methodset", i8 -43, i16 -32767, ptr getelementptr ({ ptr, i8, i16, ptr, ptr, ptr, { i32, [1 x ptr] }, [19 x i8] }, ptr @"reflect/types.type:named:main.genericMethod", i32 0, i32 1), { i32, [1 x ptr] } { i32 1, [1 x ptr] [ptr @"reflect/types.signature:Regular:func:{basic:int}{basic:int}"] } }, align 4
-@"reflect/methods.Regular:func:{basic:int}{basic:int}" = linkonce_odr constant i8 0, align 1
-@"main$string" = internal unnamed_addr constant [18 x i8] c"main.genericMethod", align 1
-@"main$string.1" = internal unnamed_addr constant [7 x i8] c"Regular", align 1
-@"pointer:named:main.genericMethod$methodset" = linkonce_odr unnamed_addr constant { i32, [1 x ptr], { ptr } } { i32 1, [1 x ptr] [ptr @"reflect/methods.Regular:func:{basic:int}{basic:int}"], { ptr } { ptr @"(*main.genericMethod).Regular" } }
-@"reflect/types.type:struct:{}" = linkonce_odr constant { i8, i16, ptr, ptr, i32, i16, [0 x %runtime.structField] } { i8 90, i16 0, ptr @"reflect/types.type:pointer:struct:{}", ptr @"reflect/types.type.pkgpath.empty", i32 0, i16 0, [0 x %runtime.structField] zeroinitializer }, align 4
-@"reflect/types.type.pkgpath.empty" = linkonce_odr unnamed_addr constant [1 x i8] zeroinitializer, align 1
-@"reflect/types.type:pointer:struct:{}" = linkonce_odr constant { i8, i16, ptr } { i8 -43, i16 0, ptr @"reflect/types.type:struct:{}" }, align 4
-@"named:main.genericMethod$methodset" = linkonce_odr unnamed_addr constant { i32, [1 x ptr], { ptr } } { i32 1, [1 x ptr] [ptr @"reflect/methods.Regular:func:{basic:int}{basic:int}"], { ptr } { ptr @"(main.genericMethod).Regular$invoke" } }
-@"reflect/types.type:named:main.onlyGenericMethod" = linkonce_odr constant { i8, i16, ptr, ptr, ptr, [23 x i8] } { i8 122, i16 0, ptr @"reflect/types.type:pointer:named:main.onlyGenericMethod", ptr @"reflect/types.type:struct:{}", ptr @"reflect/types.type.pkgpath:main", [23 x i8] c"main.onlyGenericMethod\00" }, align 4
-@"reflect/types.type:pointer:named:main.onlyGenericMethod" = linkonce_odr constant { i8, i16, ptr } { i8 -43, i16 0, ptr @"reflect/types.type:named:main.onlyGenericMethod" }, align 4
-
-declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #0
-
-; Function Attrs: nounwind
-define hidden void @main.init(ptr %context) unnamed_addr #1 {
-entry:
-  ret void
-}
-
-; Function Attrs: nounwind
-define hidden i32 @"(main.genericMethod).Regular"(i32 %n, ptr %context) unnamed_addr #1 {
-entry:
-  ret i32 %n
-}
-
-; Function Attrs: nounwind
-define hidden { %runtime._interface, %runtime._interface } @main.useGenericMethods(ptr %context) unnamed_addr #1 {
-entry:
-  %stackalloc = alloca i8, align 1
-  call void @runtime.trackPointer(ptr nonnull getelementptr inbounds nuw (i8, ptr @"reflect/types.type:named:main.genericMethod", i32 4), ptr nonnull %stackalloc, ptr undef) #2
-  call void @runtime.trackPointer(ptr null, ptr nonnull %stackalloc, ptr undef) #2
-  call void @runtime.trackPointer(ptr nonnull @"reflect/types.type:named:main.onlyGenericMethod", ptr nonnull %stackalloc, ptr undef) #2
-  call void @runtime.trackPointer(ptr null, ptr nonnull %stackalloc, ptr undef) #2
-  ret { %runtime._interface, %runtime._interface } { %runtime._interface { ptr getelementptr ({ ptr, i8, i16, ptr, ptr, ptr, { i32, [1 x ptr] }, [19 x i8] }, ptr @"reflect/types.type:named:main.genericMethod", i32 0, i32 1), ptr null }, %runtime._interface { ptr @"reflect/types.type:named:main.onlyGenericMethod", ptr null } }
-}
-
-; Function Attrs: nounwind
-define linkonce_odr hidden i32 @"(*main.genericMethod).Regular"(ptr %t, i32 %n, ptr %context) unnamed_addr #1 {
-entry:
-  %stackalloc = alloca i8, align 1
-  call void @runtime.trackPointer(ptr %t, ptr nonnull %stackalloc, ptr undef) #2
-  %0 = call i32 @"(main.genericMethod).Regular"(i32 %n, ptr undef)
-  ret i32 %0
-}
-
-; Function Attrs: nounwind
-define linkonce_odr i32 @"(main.genericMethod).Regular$invoke"(ptr %0, i32 %1, ptr %2) unnamed_addr #1 {
-entry:
-  %ret = call i32 @"(main.genericMethod).Regular"(i32 %1, ptr %2)
-  ret i32 %ret
-}
-
-attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind }
@@ -60,7 +60,7 @@ define hidden void @main.closureFunctionGoroutine(ptr %context) unnamed_addr #0
 entry:
  %n = call align 4 dereferenceable(4) ptr @runtime.alloc(i32 4, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #11
  store i32 3, ptr %n, align 4
-  %0 = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 133 to ptr), ptr undef) #11
+  %0 = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr null, ptr undef) #11
  store i32 5, ptr %0, align 4
  %1 = getelementptr inbounds nuw i8, ptr %0, i32 4
  store ptr %n, ptr %1, align 4
@@ -102,7 +102,7 @@ declare void @runtime.printunlock(ptr) #1
 ; Function Attrs: nounwind
 define hidden void @main.funcGoroutine(ptr %fn.context, ptr %fn.funcptr, ptr %context) unnamed_addr #0 {
 entry:
-  %0 = call align 4 dereferenceable(12) ptr @runtime.alloc(i32 12, ptr nonnull inttoptr (i32 391 to ptr), ptr undef) #11
+  %0 = call align 4 dereferenceable(12) ptr @runtime.alloc(i32 12, ptr null, ptr undef) #11
  store i32 5, ptr %0, align 4
  %1 = getelementptr inbounds nuw i8, ptr %0, i32 4
  store ptr %fn.context, ptr %1, align 4
@@ -157,7 +157,7 @@ declare void @runtime.chanClose(ptr dereferenceable_or_null(36), ptr) #1
 ; Function Attrs: nounwind
 define hidden void @main.startInterfaceMethod(ptr %itf.typecode, ptr %itf.value, ptr %context) unnamed_addr #0 {
 entry:
-  %0 = call align 4 dereferenceable(16) ptr @runtime.alloc(i32 16, ptr nonnull inttoptr (i32 713 to ptr), ptr undef) #11
+  %0 = call align 4 dereferenceable(16) ptr @runtime.alloc(i32 16, ptr null, ptr undef) #11
  store ptr %itf.value, ptr %0, align 4
  %1 = getelementptr inbounds nuw i8, ptr %0, i32 4
  store ptr @"main$string", ptr %1, align 4
@@ -195,6 +195,6 @@ attributes #5 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb
 attributes #6 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" "tinygo-gowrapper" }
 attributes #7 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
 attributes #8 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
-attributes #9 = { "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" "tinygo-invoke"="reflect/methods.Print:func:{basic:string}{}" "tinygo-methods"="reflect/methods.Print:func:{basic:string}{}" }
+attributes #9 = { "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" "tinygo-invoke"="reflect/methods.Print(string)" "tinygo-methods"="reflect/methods.Print(string)" }
 attributes #10 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" "tinygo-gowrapper"="interface:{Print:func:{basic:string}{}}.Print$invoke" }
 attributes #11 = { nounwind }
@@ -22,14 +22,14 @@ entry:

 declare void @main.regularFunction(i32, ptr) #0

-declare void @runtime.exitGoroutine(ptr) #0
+declare void @runtime.deadlock(ptr) #0

 ; Function Attrs: nounwind
 define linkonce_odr void @"main.regularFunction$gowrapper"(ptr %0) unnamed_addr #2 {
 entry:
  %unpack.int = ptrtoint ptr %0 to i32
  call void @main.regularFunction(i32 %unpack.int, ptr undef) #11
-  call void @runtime.exitGoroutine(ptr undef) #11
+  call void @runtime.deadlock(ptr undef) #11
  unreachable
 }

@@ -53,7 +53,7 @@ define linkonce_odr void @"main.inlineFunctionGoroutine$1$gowrapper"(ptr %0) unn
 entry:
  %unpack.int = ptrtoint ptr %0 to i32
  call void @"main.inlineFunctionGoroutine$1"(i32 %unpack.int, ptr undef)
-  call void @runtime.exitGoroutine(ptr undef) #11
+  call void @runtime.deadlock(ptr undef) #11
  unreachable
 }

@@ -66,7 +66,7 @@ entry:
  store i32 3, ptr %n, align 4
  call void @runtime.trackPointer(ptr nonnull %n, ptr nonnull %stackalloc, ptr undef) #11
  call void @runtime.trackPointer(ptr nonnull @"main.closureFunctionGoroutine$1", ptr nonnull %stackalloc, ptr undef) #11
-  %0 = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 133 to ptr), ptr undef) #11
+  %0 = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr null, ptr undef) #11
  call void @runtime.trackPointer(ptr nonnull %0, ptr nonnull %stackalloc, ptr undef) #11
  store i32 5, ptr %0, align 4
  %1 = getelementptr inbounds nuw i8, ptr %0, i32 4
@@ -96,7 +96,7 @@ entry:
  %2 = getelementptr inbounds nuw i8, ptr %0, i32 4
  %3 = load ptr, ptr %2, align 4
  call void @"main.closureFunctionGoroutine$1"(i32 %1, ptr %3)
-  call void @runtime.exitGoroutine(ptr undef) #11
+  call void @runtime.deadlock(ptr undef) #11
  unreachable
 }

@@ -110,7 +110,7 @@ declare void @runtime.printunlock(ptr) #0
 define hidden void @main.funcGoroutine(ptr %fn.context, ptr %fn.funcptr, ptr %context) unnamed_addr #1 {
 entry:
  %stackalloc = alloca i8, align 1
-  %0 = call align 4 dereferenceable(12) ptr @runtime.alloc(i32 12, ptr nonnull inttoptr (i32 391 to ptr), ptr undef) #11
+  %0 = call align 4 dereferenceable(12) ptr @runtime.alloc(i32 12, ptr null, ptr undef) #11
  call void @runtime.trackPointer(ptr nonnull %0, ptr nonnull %stackalloc, ptr undef) #11
  store i32 5, ptr %0, align 4
  %1 = getelementptr inbounds nuw i8, ptr %0, i32 4
@@ -130,7 +130,7 @@ entry:
  %4 = getelementptr inbounds nuw i8, ptr %0, i32 8
  %5 = load ptr, ptr %4, align 4
  call void %5(i32 %1, ptr %3) #11
-  call void @runtime.exitGoroutine(ptr undef) #11
+  call void @runtime.deadlock(ptr undef) #11
  unreachable
 }

@@ -167,7 +167,7 @@ declare void @runtime.chanClose(ptr dereferenceable_or_null(36), ptr) #0
 define hidden void @main.startInterfaceMethod(ptr %itf.typecode, ptr %itf.value, ptr %context) unnamed_addr #1 {
 entry:
  %stackalloc = alloca i8, align 1
-  %0 = call align 4 dereferenceable(16) ptr @runtime.alloc(i32 16, ptr nonnull inttoptr (i32 713 to ptr), ptr undef) #11
+  %0 = call align 4 dereferenceable(16) ptr @runtime.alloc(i32 16, ptr null, ptr undef) #11
  call void @runtime.trackPointer(ptr nonnull %0, ptr nonnull %stackalloc, ptr undef) #11
  store ptr %itf.value, ptr %0, align 4
  %1 = getelementptr inbounds nuw i8, ptr %0, i32 4
@@ -193,7 +193,7 @@ entry:
  %6 = getelementptr inbounds nuw i8, ptr %0, i32 12
  %7 = load ptr, ptr %6, align 4
  call void @"interface:{Print:func:{basic:string}{}}.Print$invoke"(ptr %1, ptr %3, i32 %5, ptr %7, ptr undef) #11
-  call void @runtime.exitGoroutine(ptr undef) #11
+  call void @runtime.deadlock(ptr undef) #11
  unreachable
 }

@@ -206,6 +206,6 @@ attributes #5 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+cal
 attributes #6 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-gowrapper" }
 attributes #7 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
 attributes #8 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
-attributes #9 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-invoke"="reflect/methods.Print:func:{basic:string}{}" "tinygo-methods"="reflect/methods.Print:func:{basic:string}{}" }
+attributes #9 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-invoke"="reflect/methods.Print(string)" "tinygo-methods"="reflect/methods.Print(string)" }
 attributes #10 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-gowrapper"="interface:{Print:func:{basic:string}{}}.Print$invoke" }
 attributes #11 = { nounwind }
@@ -131,8 +131,8 @@ declare %runtime._string @"interface:{Error:func:{}{basic:string}}.Error$invoke"

 attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
 attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-methods"="reflect/methods.Error:func:{}{basic:string}" }
-attributes #3 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-methods"="reflect/methods.String:func:{}{basic:string}" }
-attributes #4 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-invoke"="main.$methods.foo:func:{basic:int}{basic:uint8}" "tinygo-methods"="reflect/methods.String:func:{}{basic:string}; main.$methods.foo:func:{basic:int}{basic:uint8}" }
-attributes #5 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-invoke"="reflect/methods.Error:func:{}{basic:string}" "tinygo-methods"="reflect/methods.Error:func:{}{basic:string}" }
+attributes #2 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-methods"="reflect/methods.Error() string" }
+attributes #3 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-methods"="reflect/methods.String() string" }
+attributes #4 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-invoke"="main.$methods.foo(int) uint8" "tinygo-methods"="reflect/methods.String() string; main.$methods.foo(int) uint8" }
+attributes #5 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-invoke"="reflect/methods.Error() string" "tinygo-methods"="reflect/methods.Error() string" }
 attributes #6 = { nounwind }
@@ -1,20 +0,0 @@
-package main
-
-type largeOptimizedValue [1025]byte
-
-type mixedLargeOptimizedValue struct {
-	value [1025]byte
-	any   any
-}
-
-func makeLargeOptimizedValue() largeOptimizedValue {
-	return largeOptimizedValue{}
-}
-
-func readLargeOptimizedValue(value largeOptimizedValue) byte {
-	return value[len(value)-1]
-}
-
-func readMixedLargeOptimizedValue(value mixedLargeOptimizedValue) byte {
-	return value.value[len(value.value)-1]
-}
@@ -1,120 +0,0 @@
-package main
-
-type largeValue [1025]byte
-
-type largeStruct struct {
-	value [1025]byte
-	ptr   *byte
-}
-
-type largeInterface interface {
-	makeLargeValue() largeValue
-	readLargeValue(largeValue) byte
-}
-
-type largeReceiver largeValue
-
-func makeLargeValue(value byte) largeValue {
-	var result largeValue
-	result[len(result)-1] = value
-	return result
-}
-
-func makeZeroLargeValue() largeValue {
-	return largeValue{}
-}
-
-func passZeroLargeValue() byte {
-	return readLargeValue(largeValue{})
-}
-
-func readLargeValue(value largeValue) byte {
-	return value[len(value)-1]
-}
-
-func useLargeValue() byte {
-	return readLargeValue(makeLargeValue(42))
-}
-
-func useLargeFunctionValue(fn func(largeValue) byte) byte {
-	return fn(makeLargeValue(42))
-}
-
-func (receiver largeReceiver) makeLargeValue() largeValue {
-	return largeValue(receiver)
-}
-
-func (receiver largeReceiver) readLargeValue(value largeValue) byte {
-	return value[len(value)-1]
-}
-
-func useLargeInterface(value largeInterface) byte {
-	return value.readLargeValue(value.makeLargeValue())
-}
-
-func deferLargeValue(value largeValue) {
-	defer readLargeValue(value)
-}
-
-func goLargeValue(value largeValue) {
-	go readLargeValue(value)
-}
-
-func makeLargeResults(value byte) (largeValue, byte) {
-	return makeLargeValue(value), value
-}
-
-func makeTwoLargeResults(value byte) (largeValue, largeValue) {
-	return makeLargeValue(value), makeLargeValue(value + 1)
-}
-
-func makeMixedLargeResults(value byte) (largeValue, byte, largeValue) {
-	return makeLargeValue(value), value + 1, makeLargeValue(value + 2)
-}
-
-func chooseLargeValue(flag bool) largeValue {
-	value := makeLargeValue(1)
-	if flag {
-		value = makeLargeValue(42)
-	}
-	return value
-}
-
-func makePointerLargeValue(value *byte) largeStruct {
-	return largeStruct{ptr: value}
-}
-
-func assertLargeValue(value any) byte {
-	large, ok := value.(largeValue)
-	if !ok {
-		return 0
-	}
-	return large[len(large)-1]
-}
-
-func useLargeMap(key, value largeValue) byte {
-	values := map[largeValue]largeValue{key: value}
-	result, ok := values[key]
-	if !ok {
-		return 0
-	}
-	return result[len(result)-1]
-}
-
-func useLargeChannel(ch chan largeValue, value largeValue) byte {
-	ch <- value
-	result, ok := <-ch
-	if !ok {
-		return 0
-	}
-	return result[len(result)-1]
-}
-
-func selectLargeChannel(ch chan largeValue, value largeValue) byte {
-	select {
-	case ch <- value:
-		return 0
-	case result := <-ch:
-		return result[len(result)-1]
-	}
-}
@@ -1,498 +0,0 @@
-; ModuleID = 'large.go'
-source_filename = "large.go"
-target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
-target triple = "wasm32-unknown-wasi"
-
-%runtime._string = type { ptr, i32 }
-%runtime.channelOp = type { ptr, ptr, i32, ptr }
-%runtime.chanSelectState = type { ptr, ptr }
-
-@"runtime/gc.layout:258-000000000000000000000000000000000000000000000000000000000000000002" = linkonce_odr unnamed_addr constant { i32, [33 x i8] } { i32 258, [33 x i8] c"\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\02" }
-@"reflect/types.typeid:named:main.largeValue" = external constant i8
-@llvm.used = appending global [15 x ptr] [ptr @"(main.largeReceiver).makeLargeValue", ptr @"(main.largeReceiver).readLargeValue", ptr @main.makeLargeValue, ptr @main.makeZeroLargeValue, ptr @main.readLargeValue, ptr @main.deferLargeValue, ptr @main.goLargeValue, ptr @main.makeLargeResults, ptr @main.makeTwoLargeResults, ptr @main.makeMixedLargeResults, ptr @main.chooseLargeValue, ptr @main.makePointerLargeValue, ptr @main.useLargeMap, ptr @main.useLargeChannel, ptr @main.selectLargeChannel]
-@"main$string" = internal unnamed_addr constant [31 x i8] c"blocking select matched no case", align 1
-@"main$pack" = internal unnamed_addr constant { %runtime._string } { %runtime._string { ptr @"main$string", i32 31 } }
-@"reflect/types.type:basic:string" = linkonce_odr constant { i8, ptr } { i8 81, ptr @"reflect/types.type:pointer:basic:string" }, align 4
-@"reflect/types.type:pointer:basic:string" = linkonce_odr constant { i8, i16, ptr } { i8 -43, i16 0, ptr @"reflect/types.type:basic:string" }, align 4
-
-declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #0
-
-; Function Attrs: nounwind
-define hidden void @main.init(ptr %context) unnamed_addr #1 {
-entry:
-  ret void
-}
-
-; Function Attrs: nounwind
-define hidden void @"(main.largeReceiver).makeLargeValue"(ptr dereferenceable_or_null(1025) %return, ptr readonly dereferenceable_or_null(1025) %receiver, ptr %context) unnamed_addr #1 {
-entry:
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1025) %return, ptr noundef nonnull align 1 dereferenceable(1025) %receiver, i32 1025, i1 false)
-  ret void
-}
-
-; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
-declare void @llvm.memcpy.p0.p0.i32(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i32, i1 immarg) #2
-
-; Function Attrs: nounwind
-define hidden i8 @"(main.largeReceiver).readLargeValue"(ptr readonly dereferenceable_or_null(1025) %receiver, ptr readonly dereferenceable_or_null(1025) %value, ptr %context) unnamed_addr #1 {
-entry:
-  %stackalloc = alloca i8, align 1
-  %value1 = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %value1, ptr nonnull %stackalloc, ptr undef) #9
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1025) %value1, ptr noundef nonnull align 1 dereferenceable(1025) %value, i32 1025, i1 false)
-  %0 = getelementptr inbounds nuw i8, ptr %value1, i32 1024
-  %1 = load i8, ptr %0, align 1
-  ret i8 %1
-}
-
-; Function Attrs: allockind("alloc,zeroed") allocsize(0)
-declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #3
-
-; Function Attrs: nounwind
-define hidden void @main.makeLargeValue(ptr dereferenceable_or_null(1025) %return, i8 %value, ptr %context) unnamed_addr #1 {
-entry:
-  %stackalloc = alloca i8, align 1
-  %result = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %result, ptr nonnull %stackalloc, ptr undef) #9
-  %0 = getelementptr inbounds nuw i8, ptr %result, i32 1024
-  store i8 %value, ptr %0, align 1
-  %1 = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %1, ptr nonnull %stackalloc, ptr undef) #9
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1025) %1, ptr noundef nonnull align 1 dereferenceable(1025) %result, i32 1025, i1 false)
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1025) %return, ptr noundef nonnull align 1 dereferenceable(1025) %1, i32 1025, i1 false)
-  ret void
-}
-
-; Function Attrs: nounwind
-define hidden void @main.makeZeroLargeValue(ptr dereferenceable_or_null(1025) %return, ptr %context) unnamed_addr #1 {
-entry:
-  store [1025 x i8] zeroinitializer, ptr %return, align 1
-  ret void
-}
-
-; Function Attrs: nounwind
-define hidden i8 @main.passZeroLargeValue(ptr %context) unnamed_addr #1 {
-entry:
-  %stackalloc = alloca i8, align 1
-  %"main.largeValue{}:main.largeValue" = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %"main.largeValue{}:main.largeValue", ptr nonnull %stackalloc, ptr undef) #9
-  store [1025 x i8] zeroinitializer, ptr %"main.largeValue{}:main.largeValue", align 1
-  %0 = call i8 @main.readLargeValue(ptr nonnull %"main.largeValue{}:main.largeValue", ptr undef)
-  ret i8 %0
-}
-
-; Function Attrs: nounwind
-define hidden i8 @main.readLargeValue(ptr readonly dereferenceable_or_null(1025) %value, ptr %context) unnamed_addr #1 {
-entry:
-  %stackalloc = alloca i8, align 1
-  %value1 = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %value1, ptr nonnull %stackalloc, ptr undef) #9
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1025) %value1, ptr noundef nonnull align 1 dereferenceable(1025) %value, i32 1025, i1 false)
-  %0 = getelementptr inbounds nuw i8, ptr %value1, i32 1024
-  %1 = load i8, ptr %0, align 1
-  ret i8 %1
-}
-
-; Function Attrs: nounwind
-define hidden i8 @main.useLargeValue(ptr %context) unnamed_addr #1 {
-entry:
-  %stackalloc = alloca i8, align 1
-  %call.result = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %call.result, ptr nonnull %stackalloc, ptr undef) #9
-  call void @main.makeLargeValue(ptr nonnull %call.result, i8 42, ptr undef)
-  %0 = call i8 @main.readLargeValue(ptr nonnull %call.result, ptr undef)
-  ret i8 %0
-}
-
-; Function Attrs: nounwind
-define hidden i8 @main.useLargeFunctionValue(ptr %fn.context, ptr %fn.funcptr, ptr %context) unnamed_addr #1 {
-entry:
-  %stackalloc = alloca i8, align 1
-  %call.result = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %call.result, ptr nonnull %stackalloc, ptr undef) #9
-  call void @main.makeLargeValue(ptr nonnull %call.result, i8 42, ptr undef)
-  %0 = icmp eq ptr %fn.funcptr, null
-  br i1 %0, label %fpcall.throw, label %fpcall.next
-
-fpcall.next:                                      ; preds = %entry
-  %1 = call i8 %fn.funcptr(ptr nonnull %call.result, ptr %fn.context) #9
-  ret i8 %1
-
-fpcall.throw:                                     ; preds = %entry
-  call void @runtime.nilPanic(ptr undef) #9
-  unreachable
-}
-
-declare void @runtime.nilPanic(ptr) #0
-
-; Function Attrs: nounwind
-define hidden i8 @main.useLargeInterface(ptr %value.typecode, ptr %value.value, ptr %context) unnamed_addr #1 {
-entry:
-  %stackalloc = alloca i8, align 1
-  %call.result = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %call.result, ptr nonnull %stackalloc, ptr undef) #9
-  call void @"interface:{main.makeLargeValue:func:{}{named:main.largeValue},main.readLargeValue:func:{named:main.largeValue}{basic:uint8}}.makeLargeValue$invoke"(ptr nonnull %call.result, ptr %value.value, ptr %value.typecode, ptr undef) #9
-  %0 = call i8 @"interface:{main.makeLargeValue:func:{}{named:main.largeValue},main.readLargeValue:func:{named:main.largeValue}{basic:uint8}}.readLargeValue$invoke"(ptr %value.value, ptr nonnull %call.result, ptr %value.typecode, ptr undef) #9
-  ret i8 %0
-}
-
-declare void @"interface:{main.makeLargeValue:func:{}{named:main.largeValue},main.readLargeValue:func:{named:main.largeValue}{basic:uint8}}.makeLargeValue$invoke"(ptr, ptr, ptr, ptr) #4
-
-declare i8 @"interface:{main.makeLargeValue:func:{}{named:main.largeValue},main.readLargeValue:func:{named:main.largeValue}{basic:uint8}}.readLargeValue$invoke"(ptr, ptr, ptr, ptr) #5
-
-; Function Attrs: nounwind
-define hidden void @main.deferLargeValue(ptr readonly dereferenceable_or_null(1025) %value, ptr %context) unnamed_addr #1 {
-entry:
-  %defer.alloca = alloca { i32, ptr, ptr }, align 8
-  %deferPtr = alloca ptr, align 4
-  store ptr null, ptr %deferPtr, align 4
-  %stackalloc = alloca i8, align 1
-  call void @runtime.trackPointer(ptr nonnull %defer.alloca, ptr nonnull %stackalloc, ptr undef) #9
-  store i32 0, ptr %defer.alloca, align 4
-  %defer.alloca.repack1 = getelementptr inbounds nuw i8, ptr %defer.alloca, i32 4
-  store ptr null, ptr %defer.alloca.repack1, align 4
-  %defer.alloca.repack3 = getelementptr inbounds nuw i8, ptr %defer.alloca, i32 8
-  store ptr %value, ptr %defer.alloca.repack3, align 4
-  store ptr %defer.alloca, ptr %deferPtr, align 4
-  br label %rundefers.block
-
-rundefers.after:                                  ; preds = %rundefers.end
-  ret void
-
-rundefers.block:                                  ; preds = %entry
-  br label %rundefers.loophead
-
-rundefers.loophead:                               ; preds = %rundefers.callback0, %rundefers.block
-  %0 = load ptr, ptr %deferPtr, align 4
-  %stackIsNil = icmp eq ptr %0, null
-  br i1 %stackIsNil, label %rundefers.end, label %rundefers.loop
-
-rundefers.loop:                                   ; preds = %rundefers.loophead
-  %stack.next.gep = getelementptr inbounds nuw i8, ptr %0, i32 4
-  %stack.next = load ptr, ptr %stack.next.gep, align 4
-  store ptr %stack.next, ptr %deferPtr, align 4
-  %callback = load i32, ptr %0, align 4
-  switch i32 %callback, label %rundefers.default [
-    i32 0, label %rundefers.callback0
-  ]
-
-rundefers.callback0:                              ; preds = %rundefers.loop
-  %gep = getelementptr inbounds nuw i8, ptr %0, i32 8
-  %param = load ptr, ptr %gep, align 4
-  %1 = call i8 @main.readLargeValue(ptr %param, ptr undef)
-  br label %rundefers.loophead
-
-rundefers.default:                                ; preds = %rundefers.loop
-  unreachable
-
-rundefers.end:                                    ; preds = %rundefers.loophead
-  br label %rundefers.after
-
-recover:                                          ; No predecessors!
-  ret void
-}
-
-; Function Attrs: nounwind
-define hidden void @main.goLargeValue(ptr readonly dereferenceable_or_null(1025) %value, ptr %context) unnamed_addr #1 {
-entry:
-  %stackalloc = alloca i8, align 1
-  %go.param = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %go.param, ptr nonnull %stackalloc, ptr undef) #9
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1025) %go.param, ptr noundef nonnull align 1 dereferenceable(1025) %value, i32 1025, i1 false)
-  call void @"internal/task.start"(i32 ptrtoint (ptr @"main.readLargeValue$gowrapper" to i32), ptr nonnull %go.param, i32 65536, ptr undef) #9
-  ret void
-}
-
-declare void @runtime.exitGoroutine(ptr) #0
-
-; Function Attrs: nounwind
-define linkonce_odr void @"main.readLargeValue$gowrapper"(ptr %0) unnamed_addr #6 {
-entry:
-  %1 = call i8 @main.readLargeValue(ptr %0, ptr undef)
-  call void @runtime.exitGoroutine(ptr undef) #9
-  unreachable
-}
-
-declare void @"internal/task.start"(i32, ptr, i32, ptr) #0
-
-; Function Attrs: nounwind
-define hidden void @main.makeLargeResults(ptr dereferenceable_or_null(1026) %return, i8 %value, ptr %context) unnamed_addr #1 {
-entry:
-  %stackalloc = alloca i8, align 1
-  %call.result = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %call.result, ptr nonnull %stackalloc, ptr undef) #9
-  call void @main.makeLargeValue(ptr nonnull %call.result, i8 %value, ptr undef)
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1025) %return, ptr noundef nonnull align 1 dereferenceable(1025) %call.result, i32 1025, i1 false)
-  %0 = getelementptr inbounds nuw i8, ptr %return, i32 1025
-  store i8 %value, ptr %0, align 1
-  ret void
-}
-
-; Function Attrs: nounwind
-define hidden void @main.makeTwoLargeResults(ptr dereferenceable_or_null(2050) %return, i8 %value, ptr %context) unnamed_addr #1 {
-entry:
-  %stackalloc = alloca i8, align 1
-  %call.result = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %call.result, ptr nonnull %stackalloc, ptr undef) #9
-  call void @main.makeLargeValue(ptr nonnull %call.result, i8 %value, ptr undef)
-  %0 = add i8 %value, 1
-  %call.result1 = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %call.result1, ptr nonnull %stackalloc, ptr undef) #9
-  call void @main.makeLargeValue(ptr nonnull %call.result1, i8 %0, ptr undef)
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1025) %return, ptr noundef nonnull align 1 dereferenceable(1025) %call.result, i32 1025, i1 false)
-  %1 = getelementptr inbounds nuw i8, ptr %return, i32 1025
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1025) %1, ptr noundef nonnull align 1 dereferenceable(1025) %call.result1, i32 1025, i1 false)
-  ret void
-}
-
-; Function Attrs: nounwind
-define hidden void @main.makeMixedLargeResults(ptr dereferenceable_or_null(2051) %return, i8 %value, ptr %context) unnamed_addr #1 {
-entry:
-  %stackalloc = alloca i8, align 1
-  %call.result = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %call.result, ptr nonnull %stackalloc, ptr undef) #9
-  call void @main.makeLargeValue(ptr nonnull %call.result, i8 %value, ptr undef)
-  %0 = add i8 %value, 1
-  %1 = add i8 %value, 2
-  %call.result1 = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %call.result1, ptr nonnull %stackalloc, ptr undef) #9
-  call void @main.makeLargeValue(ptr nonnull %call.result1, i8 %1, ptr undef)
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1025) %return, ptr noundef nonnull align 1 dereferenceable(1025) %call.result, i32 1025, i1 false)
-  %2 = getelementptr inbounds nuw i8, ptr %return, i32 1025
-  store i8 %0, ptr %2, align 1
-  %3 = getelementptr inbounds nuw i8, ptr %return, i32 1026
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1025) %3, ptr noundef nonnull align 1 dereferenceable(1025) %call.result1, i32 1025, i1 false)
-  ret void
-}
-
-; Function Attrs: nounwind
-define hidden void @main.chooseLargeValue(ptr dereferenceable_or_null(1025) %return, i1 %flag, ptr %context) unnamed_addr #1 {
-entry:
-  %stackalloc = alloca i8, align 1
-  %call.result = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %call.result, ptr nonnull %stackalloc, ptr undef) #9
-  call void @main.makeLargeValue(ptr nonnull %call.result, i8 1, ptr undef)
-  br i1 %flag, label %if.then, label %if.done
-
-if.then:                                          ; preds = %entry
-  %call.result1 = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %call.result1, ptr nonnull %stackalloc, ptr undef) #9
-  call void @main.makeLargeValue(ptr nonnull %call.result1, i8 42, ptr undef)
-  br label %if.done
-
-if.done:                                          ; preds = %if.then, %entry
-  %0 = phi ptr [ %call.result, %entry ], [ %call.result1, %if.then ]
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1025) %return, ptr noundef nonnull align 1 dereferenceable(1025) %0, i32 1025, i1 false)
-  ret void
-}
-
-; Function Attrs: nounwind
-define hidden void @main.makePointerLargeValue(ptr dereferenceable_or_null(1032) %return, ptr dereferenceable_or_null(1) %value, ptr %context) unnamed_addr #1 {
-entry:
-  %stackalloc = alloca i8, align 1
-  %complit = call align 4 dereferenceable(1032) ptr @runtime.alloc(i32 1032, ptr nonnull @"runtime/gc.layout:258-000000000000000000000000000000000000000000000000000000000000000002", ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %complit, ptr nonnull %stackalloc, ptr undef) #9
-  br i1 false, label %store.throw, label %store.next
-
-store.next:                                       ; preds = %entry
-  %0 = getelementptr inbounds nuw i8, ptr %complit, i32 1028
-  store ptr %value, ptr %0, align 4
-  %1 = call align 4 dereferenceable(1032) ptr @runtime.alloc(i32 1032, ptr nonnull @"runtime/gc.layout:258-000000000000000000000000000000000000000000000000000000000000000002", ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %1, ptr nonnull %stackalloc, ptr undef) #9
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 4 dereferenceable(1032) %1, ptr noundef nonnull align 4 dereferenceable(1032) %complit, i32 1032, i1 false)
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1032) %return, ptr noundef nonnull align 4 dereferenceable(1032) %1, i32 1032, i1 false)
-  ret void
-
-store.throw:                                      ; preds = %entry
-  unreachable
-}
-
-; Function Attrs: nounwind
-define hidden i8 @main.assertLargeValue(ptr %value.typecode, ptr %value.value, ptr %context) unnamed_addr #1 {
-entry:
-  %stackalloc = alloca i8, align 1
-  %large = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %large, ptr nonnull %stackalloc, ptr undef) #9
-  %typecode = call i1 @runtime.typeAssert(ptr %value.typecode, ptr nonnull @"reflect/types.typeid:named:main.largeValue", ptr undef) #9
-  %typeassert.result = call align 1 dereferenceable(1026) ptr @runtime.alloc(i32 1026, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %typeassert.result, ptr nonnull %stackalloc, ptr undef) #9
-  call void @llvm.memset.p0.i32(ptr noundef nonnull align 1 dereferenceable(1026) %typeassert.result, i8 0, i32 1026, i1 false)
-  br i1 %typecode, label %typeassert.ok, label %typeassert.next
-
-typeassert.next:                                  ; preds = %typeassert.ok, %entry
-  %0 = getelementptr inbounds nuw i8, ptr %typeassert.result, i32 1025
-  store i1 %typecode, ptr %0, align 1
-  %t2 = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %t2, ptr nonnull %stackalloc, ptr undef) #9
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1025) %t2, ptr noundef nonnull align 1 dereferenceable(1025) %typeassert.result, i32 1025, i1 false)
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1025) %large, ptr noundef nonnull align 1 dereferenceable(1025) %t2, i32 1025, i1 false)
-  br i1 %typecode, label %if.done, label %if.then
-
-typeassert.ok:                                    ; preds = %entry
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1025) %typeassert.result, ptr noundef nonnull align 1 dereferenceable(1025) %value.value, i32 1025, i1 false)
-  br label %typeassert.next
-
-if.done:                                          ; preds = %typeassert.next
-  %1 = getelementptr inbounds nuw i8, ptr %large, i32 1024
-  %2 = load i8, ptr %1, align 1
-  ret i8 %2
-
-if.then:                                          ; preds = %typeassert.next
-  ret i8 0
-}
-
-declare i1 @runtime.typeAssert(ptr, ptr dereferenceable_or_null(1), ptr) #0
-
-; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
-declare void @llvm.memset.p0.i32(ptr nocapture writeonly, i8, i32, i1 immarg) #7
-
-; Function Attrs: nounwind
-define hidden i8 @main.useLargeMap(ptr readonly dereferenceable_or_null(1025) %key, ptr readonly dereferenceable_or_null(1025) %value, ptr %context) unnamed_addr #1 {
-entry:
-  %stackalloc = alloca i8, align 1
-  %0 = call ptr @runtime.hashmapMakeGeneric(i32 1025, i32 1025, i32 1, ptr null, ptr nonnull @runtime.hash32, ptr null, ptr nonnull @runtime.memequal, ptr undef) #9
-  call void @runtime.trackPointer(ptr %0, ptr nonnull %stackalloc, ptr undef) #9
-  call void @runtime.hashmapBinarySet(ptr %0, ptr %key, ptr %value, ptr undef) #9
-  %result = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %result, ptr nonnull %stackalloc, ptr undef) #9
-  %hashmap.result = call align 1 dereferenceable(1026) ptr @runtime.alloc(i32 1026, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %hashmap.result, ptr nonnull %stackalloc, ptr undef) #9
-  %1 = call i1 @runtime.hashmapBinaryGet(ptr %0, ptr %key, ptr nonnull %hashmap.result, i32 1025, ptr undef) #9
-  %2 = getelementptr inbounds nuw i8, ptr %hashmap.result, i32 1025
-  store i1 %1, ptr %2, align 1
-  %t3 = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %t3, ptr nonnull %stackalloc, ptr undef) #9
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1025) %t3, ptr noundef nonnull align 1 dereferenceable(1025) %hashmap.result, i32 1025, i1 false)
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1025) %result, ptr noundef nonnull align 1 dereferenceable(1025) %t3, i32 1025, i1 false)
-  %3 = getelementptr inbounds nuw i8, ptr %hashmap.result, i32 1025
-  %t4 = load i1, ptr %3, align 1
-  br i1 %t4, label %if.done, label %if.then
-
-if.done:                                          ; preds = %entry
-  %4 = getelementptr inbounds nuw i8, ptr %result, i32 1024
-  %5 = load i8, ptr %4, align 1
-  ret i8 %5
-
-if.then:                                          ; preds = %entry
-  ret i8 0
-}
-
-declare i32 @runtime.hash32(ptr, i32, i32, ptr) #0
-
-declare i1 @runtime.memequal(ptr, ptr, i32, ptr) #0
-
-declare ptr @runtime.hashmapMakeGeneric(i32, i32, i32, ptr, ptr, ptr, ptr, ptr) #0
-
-declare void @runtime.hashmapBinarySet(ptr dereferenceable_or_null(48), ptr, ptr, ptr) #0
-
-declare i1 @runtime.hashmapBinaryGet(ptr dereferenceable_or_null(48), ptr, ptr, i32, ptr) #0
-
-; Function Attrs: nounwind
-define hidden i8 @main.useLargeChannel(ptr dereferenceable_or_null(36) %ch, ptr readonly dereferenceable_or_null(1025) %value, ptr %context) unnamed_addr #1 {
-entry:
-  %chan.op1 = alloca %runtime.channelOp, align 8
-  %chan.op = alloca %runtime.channelOp, align 8
-  %stackalloc = alloca i8, align 1
-  call void @llvm.lifetime.start.p0(ptr nonnull %chan.op)
-  call void @runtime.chanSend(ptr %ch, ptr %value, ptr nonnull %chan.op, ptr undef) #9
-  call void @llvm.lifetime.end.p0(ptr nonnull %chan.op)
-  %result = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %result, ptr nonnull %stackalloc, ptr undef) #9
-  %chan.result = call align 1 dereferenceable(1026) ptr @runtime.alloc(i32 1026, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %chan.result, ptr nonnull %stackalloc, ptr undef) #9
-  call void @llvm.lifetime.start.p0(ptr nonnull %chan.op1)
-  %0 = call i1 @runtime.chanRecv(ptr %ch, ptr nonnull %chan.result, ptr nonnull %chan.op1, ptr undef) #9
-  %1 = getelementptr inbounds nuw i8, ptr %chan.result, i32 1025
-  store i1 %0, ptr %1, align 1
-  call void @llvm.lifetime.end.p0(ptr nonnull %chan.op1)
-  %t2 = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %t2, ptr nonnull %stackalloc, ptr undef) #9
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1025) %t2, ptr noundef nonnull align 1 dereferenceable(1025) %chan.result, i32 1025, i1 false)
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1025) %result, ptr noundef nonnull align 1 dereferenceable(1025) %t2, i32 1025, i1 false)
-  %2 = getelementptr inbounds nuw i8, ptr %chan.result, i32 1025
-  %t3 = load i1, ptr %2, align 1
-  br i1 %t3, label %if.done, label %if.then
-
-if.done:                                          ; preds = %entry
-  %3 = getelementptr inbounds nuw i8, ptr %result, i32 1024
-  %4 = load i8, ptr %3, align 1
-  ret i8 %4
-
-if.then:                                          ; preds = %entry
-  ret i8 0
-}
-
-; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
-declare void @llvm.lifetime.start.p0(ptr nocapture) #8
-
-declare void @runtime.chanSend(ptr dereferenceable_or_null(36), ptr, ptr dereferenceable_or_null(16), ptr) #0
-
-; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
-declare void @llvm.lifetime.end.p0(ptr nocapture) #8
-
-declare i1 @runtime.chanRecv(ptr dereferenceable_or_null(36), ptr, ptr dereferenceable_or_null(16), ptr) #0
-
-; Function Attrs: nounwind
-define hidden i8 @main.selectLargeChannel(ptr dereferenceable_or_null(36) %ch, ptr readonly dereferenceable_or_null(1025) %value, ptr %context) unnamed_addr #1 {
-entry:
-  %select.block.alloca = alloca [2 x %runtime.channelOp], align 8
-  %select.states.alloca = alloca [2 x %runtime.chanSelectState], align 8
-  %select.recvbuf.alloca = alloca [1025 x i8], align 1
-  %stackalloc = alloca i8, align 1
-  call void @llvm.lifetime.start.p0(ptr nonnull %select.recvbuf.alloca)
-  call void @llvm.lifetime.start.p0(ptr nonnull %select.states.alloca)
-  store ptr %ch, ptr %select.states.alloca, align 4
-  %select.states.alloca.repack3 = getelementptr inbounds nuw i8, ptr %select.states.alloca, i32 4
-  store ptr %value, ptr %select.states.alloca.repack3, align 4
-  %0 = getelementptr inbounds nuw i8, ptr %select.states.alloca, i32 8
-  store ptr %ch, ptr %0, align 4
-  %.repack5 = getelementptr inbounds nuw i8, ptr %select.states.alloca, i32 12
-  store ptr null, ptr %.repack5, align 4
-  call void @llvm.lifetime.start.p0(ptr nonnull %select.block.alloca)
-  %select.result = call { i32, i1 } @runtime.chanSelect(ptr nonnull %select.recvbuf.alloca, ptr nonnull %select.states.alloca, i32 2, i32 2, ptr nonnull %select.block.alloca, i32 2, i32 2, ptr undef) #9
-  call void @llvm.lifetime.end.p0(ptr nonnull %select.block.alloca)
-  call void @llvm.lifetime.end.p0(ptr nonnull %select.states.alloca)
-  call void @runtime.trackPointer(ptr nonnull %select.recvbuf.alloca, ptr nonnull %stackalloc, ptr undef) #9
-  %1 = extractvalue { i32, i1 } %select.result, 0
-  %2 = icmp eq i32 %1, 0
-  br i1 %2, label %select.body, label %select.next
-
-select.body:                                      ; preds = %entry
-  ret i8 0
-
-select.next:                                      ; preds = %entry
-  %3 = icmp eq i32 %1, 1
-  br i1 %3, label %select.body1, label %select.next2
-
-select.body1:                                     ; preds = %select.next
-  %result = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %result, ptr nonnull %stackalloc, ptr undef) #9
-  %select.received = call align 1 dereferenceable(1025) ptr @runtime.alloc(i32 1025, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull %select.received, ptr nonnull %stackalloc, ptr undef) #9
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1025) %select.received, ptr noundef nonnull align 1 dereferenceable(1025) %select.recvbuf.alloca, i32 1025, i1 false)
-  call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(1025) %result, ptr noundef nonnull align 1 dereferenceable(1025) %select.received, i32 1025, i1 false)
-  %4 = getelementptr inbounds nuw i8, ptr %result, i32 1024
-  %5 = load i8, ptr %4, align 1
-  ret i8 %5
-
-select.next2:                                     ; preds = %select.next
-  call void @runtime.trackPointer(ptr nonnull @"reflect/types.type:basic:string", ptr nonnull %stackalloc, ptr undef) #9
-  call void @runtime.trackPointer(ptr nonnull @"main$pack", ptr nonnull %stackalloc, ptr undef) #9
-  call void @runtime._panic(ptr nonnull @"reflect/types.type:basic:string", ptr nonnull @"main$pack", ptr undef) #9
-  unreachable
-}
-
-declare { i32, i1 } @runtime.chanSelect(ptr, ptr, i32, i32, ptr, i32, i32, ptr) #0
-
-declare void @runtime._panic(ptr, ptr, ptr) #0
-
-attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
-attributes #3 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #4 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-indirect-result"="true" "tinygo-invoke"="main.$methods.makeLargeValue:func:{}{named:main.largeValue}" "tinygo-methods"="main.$methods.makeLargeValue:func:{}{named:main.largeValue}; main.$methods.readLargeValue:func:{named:main.largeValue}{basic:uint8}" }
-attributes #5 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-invoke"="main.$methods.readLargeValue:func:{named:main.largeValue}{basic:uint8}" "tinygo-methods"="main.$methods.makeLargeValue:func:{}{named:main.largeValue}; main.$methods.readLargeValue:func:{named:main.largeValue}{basic:uint8}" }
-attributes #6 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-gowrapper"="main.readLargeValue" }
-attributes #7 = { nocallback nofree nounwind willreturn memory(argmem: write) }
-attributes #8 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
-attributes #9 = { nounwind }
@@ -35,12 +35,6 @@ func withLinkageName1() {
 //go:linkname withLinkageName2 somepkg.someFunction2
 func withLinkageName2()

-// Import a function from a different package using go:linknamestd (the standard
-// library variant of go:linkname introduced in Go 1.27).
-//
-//go:linknamestd withLinkageNameStd somepkg.someFunctionStd
-func withLinkageNameStd()
-
 // Function has an 'inline hint', similar to the inline keyword in C.
 //
 //go:inline
@@ -126,31 +120,3 @@ func stillEscapes(a *int, b []int, c chan int, d *[0]byte) {
 func doesHeapAlloc() *int {
 	return new(int)
 }
-
-// Define a function in a different package using a file-level go:linkname.
-// (Same as withLinkageName1, but with the //go:linkname directive detached
-// from the function declaration — see https://github.com/tinygo-org/tinygo/issues/4395)
-func withFileLevelLinkageName1() {
-}
-
-// Import a function from a different package using a file-level go:linkname.
-// (Same as withLinkageName2, but with the //go:linkname directive detached
-// from the function declaration.)
-func withFileLevelLinkageName2()
-
-//go:linkname withFileLevelLinkageName1 somepkg.someFileLevelFunction1
-//go:linkname withFileLevelLinkageName2 somepkg.someFileLevelFunction2
-
-// File-level linkname directives can also appear between two function
-// declarations, in which case Go's AST attaches them as the doc comment
-// of the following function — even when the directive's localname refers
-// to a different function. Exercise that case: the directive below names
-// withAdjacentLinkageName, but Go will attach it to
-// sentinelAfterAdjacentLinkname's Doc. The file-level scan must find it
-// by walking comment groups regardless of which decl they're attached to.
-func withAdjacentLinkageName() {
-}
-
-//go:linkname withAdjacentLinkageName somepkg.someAdjacentFunction
-func sentinelAfterAdjacentLinkname() {
-}
@@ -33,8 +33,6 @@ entry:

 declare void @somepkg.someFunction2(ptr) #0

-declare void @somepkg.someFunctionStd(ptr) #0
-
 ; Function Attrs: inlinehint nounwind
 define hidden void @main.inlineFunc(ptr %context) unnamed_addr #3 {
 entry:
@@ -50,12 +48,12 @@ entry:
 ; Function Attrs: nounwind
 define hidden void @main.useGeneric(ptr %context) unnamed_addr #1 {
 entry:
-  call void @"main.noinlineGenericFunc[basic:int8]"(ptr undef)
+  call void @"main.noinlineGenericFunc[int8]"(ptr undef)
  ret void
 }

 ; Function Attrs: noinline nounwind
-define linkonce_odr hidden void @"main.noinlineGenericFunc[basic:int8]"(ptr %context) unnamed_addr #4 {
+define linkonce_odr hidden void @"main.noinlineGenericFunc[int8]"(ptr %context) unnamed_addr #4 {
 entry:
  ret void
 }
@@ -104,26 +102,6 @@ entry:
 ; Function Attrs: allockind("alloc,zeroed") allocsize(0)
 declare noalias nonnull ptr @runtime.alloc_noheap(i32, ptr, ptr) #9

-; Function Attrs: nounwind
-define hidden void @somepkg.someFileLevelFunction1(ptr %context) unnamed_addr #1 {
-entry:
-  ret void
-}
-
-declare void @somepkg.someFileLevelFunction2(ptr) #0
-
-; Function Attrs: nounwind
-define hidden void @somepkg.someAdjacentFunction(ptr %context) unnamed_addr #1 {
-entry:
-  ret void
-}
-
-; Function Attrs: nounwind
-define hidden void @main.sentinelAfterAdjacentLinkname(ptr %context) unnamed_addr #1 {
-entry:
-  ret void
-}
-
 attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
 attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
 attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "wasm-export-name"="extern_func" }
@@ -21,23 +21,23 @@ entry:
  %0 = insertvalue %main.hasPadding zeroinitializer, i1 %s.b1, 0
  %1 = insertvalue %main.hasPadding %0, i32 %s.i, 1
  %2 = insertvalue %main.hasPadding %1, i1 %s.b2, 2
-  call void @llvm.lifetime.start.p0(ptr nonnull %hashmap.value)
-  call void @llvm.lifetime.start.p0(ptr nonnull %hashmap.key)
+  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %hashmap.value)
+  call void @llvm.lifetime.start.p0(i64 12, ptr nonnull %hashmap.key)
  store %main.hasPadding %2, ptr %hashmap.key, align 4
  %3 = call i1 @runtime.hashmapGenericGet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, i32 4, ptr undef) #4
-  call void @llvm.lifetime.end.p0(ptr nonnull %hashmap.key)
+  call void @llvm.lifetime.end.p0(i64 12, ptr nonnull %hashmap.key)
  %4 = load i32, ptr %hashmap.value, align 4
-  call void @llvm.lifetime.end.p0(ptr nonnull %hashmap.value)
+  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %hashmap.value)
  ret i32 %4
 }

 ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
-declare void @llvm.lifetime.start.p0(ptr nocapture) #3
+declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

 declare i1 @runtime.hashmapGenericGet(ptr dereferenceable_or_null(48), ptr nocapture, ptr nocapture, i32, ptr) #0

 ; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
-declare void @llvm.lifetime.end.p0(ptr nocapture) #3
+declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

 ; Function Attrs: noinline nounwind
 define hidden void @main.testZeroSet(ptr dereferenceable_or_null(48) %m, i1 %s.b1, i32 %s.i, i1 %s.b2, ptr %context) unnamed_addr #2 {
@@ -47,13 +47,13 @@ entry:
  %0 = insertvalue %main.hasPadding zeroinitializer, i1 %s.b1, 0
  %1 = insertvalue %main.hasPadding %0, i32 %s.i, 1
  %2 = insertvalue %main.hasPadding %1, i1 %s.b2, 2
-  call void @llvm.lifetime.start.p0(ptr nonnull %hashmap.value)
+  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %hashmap.value)
  store i32 5, ptr %hashmap.value, align 4
-  call void @llvm.lifetime.start.p0(ptr nonnull %hashmap.key)
+  call void @llvm.lifetime.start.p0(i64 12, ptr nonnull %hashmap.key)
  store %main.hasPadding %2, ptr %hashmap.key, align 4
  call void @runtime.hashmapGenericSet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, ptr undef) #4
-  call void @llvm.lifetime.end.p0(ptr nonnull %hashmap.key)
-  call void @llvm.lifetime.end.p0(ptr nonnull %hashmap.value)
+  call void @llvm.lifetime.end.p0(i64 12, ptr nonnull %hashmap.key)
+  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %hashmap.value)
  ret void
 }

@@ -64,17 +64,17 @@ define hidden i32 @main.testZeroArrayGet(ptr dereferenceable_or_null(48) %m, [2
 entry:
  %hashmap.key = alloca [2 x %main.hasPadding], align 8
  %hashmap.value = alloca i32, align 4
-  call void @llvm.lifetime.start.p0(ptr nonnull %hashmap.value)
-  call void @llvm.lifetime.start.p0(ptr nonnull %hashmap.key)
+  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %hashmap.value)
+  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %hashmap.key)
  %s.elt = extractvalue [2 x %main.hasPadding] %s, 0
  store %main.hasPadding %s.elt, ptr %hashmap.key, align 4
  %hashmap.key.repack1 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 12
  %s.elt2 = extractvalue [2 x %main.hasPadding] %s, 1
  store %main.hasPadding %s.elt2, ptr %hashmap.key.repack1, align 4
  %0 = call i1 @runtime.hashmapGenericGet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, i32 4, ptr undef) #4
-  call void @llvm.lifetime.end.p0(ptr nonnull %hashmap.key)
+  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %hashmap.key)
  %1 = load i32, ptr %hashmap.value, align 4
-  call void @llvm.lifetime.end.p0(ptr nonnull %hashmap.value)
+  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %hashmap.value)
  ret i32 %1
 }

@@ -83,17 +83,17 @@ define hidden void @main.testZeroArraySet(ptr dereferenceable_or_null(48) %m, [2
 entry:
  %hashmap.key = alloca [2 x %main.hasPadding], align 8
  %hashmap.value = alloca i32, align 4
-  call void @llvm.lifetime.start.p0(ptr nonnull %hashmap.value)
+  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %hashmap.value)
  store i32 5, ptr %hashmap.value, align 4
-  call void @llvm.lifetime.start.p0(ptr nonnull %hashmap.key)
+  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %hashmap.key)
  %s.elt = extractvalue [2 x %main.hasPadding] %s, 0
  store %main.hasPadding %s.elt, ptr %hashmap.key, align 4
  %hashmap.key.repack1 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 12
  %s.elt2 = extractvalue [2 x %main.hasPadding] %s, 1
  store %main.hasPadding %s.elt2, ptr %hashmap.key.repack1, align 4
  call void @runtime.hashmapGenericSet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, ptr undef) #4
-  call void @llvm.lifetime.end.p0(ptr nonnull %hashmap.key)
-  call void @llvm.lifetime.end.p0(ptr nonnull %hashmap.value)
+  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %hashmap.key)
+  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %hashmap.value)
  ret void
 }

@@ -59,6 +59,7 @@ func TestCorpus(t *testing.T) {
 	}

 	for _, repo := range repos {
+		repo := repo
 		name := repo.Repo
 		if repo.Tags != "" {
 			name += "(" + strings.ReplaceAll(repo.Tags, " ", "-") + ")"
@@ -131,6 +132,7 @@ func TestCorpus(t *testing.T) {
 			}

 			for _, dir := range repo.Subdirs {
+				dir := dir
 				t.Run(dir.Pkg, func(t *testing.T) {
 					t.Parallel()

@@ -116,7 +116,10 @@ func Diff(oldName string, old []byte, newName string, new []byte) []byte {

 		// End chunk with common lines for context.
 		if len(ctext) > 0 {
-			n := min(end.x-start.x, C)
+			n := end.x - start.x
+			if n > C {
+				n = C
+			}
 			for _, s := range x[start.x : start.x+n] {
 				ctext = append(ctext, " "+s)
 				count.x++
@@ -231,7 +234,7 @@ func tgs(x, y []string) []pair {
 	for i := range T {
 		T[i] = n + 1
 	}
-	for i := range n {
+	for i := 0; i < n; i++ {
 		k := sort.Search(n, func(k int) bool {
 			return T[k] >= J[i]
 		})
@@ -136,7 +136,7 @@ func readErrorMessages(t *testing.T, file string) string {
 	}

 	var errors []string
-	for line := range strings.SplitSeq(string(data), "\n") {
+	for _, line := range strings.Split(string(data), "\n") {
 		if strings.HasPrefix(line, "// ERROR: ") {
 			errors = append(errors, strings.TrimRight(line[len("// ERROR: "):], "\r\n"))
 		}
@@ -1,6 +1,6 @@
 module github.com/tinygo-org/tinygo

-go 1.25.0
+go 1.24.0

 require (
 	github.com/aykevl/go-wasm v0.0.2-0.20250317121156-42b86c494139
@@ -15,21 +15,22 @@ require (
 	github.com/mgechev/revive v1.3.9
 	github.com/sigurn/crc16 v0.0.0-20211026045750-20ab5afb07e3
 	github.com/tetratelabs/wazero v1.9.0
-	go.bug.st/serial v1.8.0
+	go.bug.st/serial v1.6.4
 	go.bytecodealliance.org v0.6.2
 	go.bytecodealliance.org/cm v0.2.2
-	golang.org/x/net v0.56.0
-	golang.org/x/sys v0.47.0
-	golang.org/x/tools v0.47.0
+	golang.org/x/net v0.50.0
+	golang.org/x/sys v0.41.0
+	golang.org/x/tools v0.42.0
 	gopkg.in/yaml.v2 v2.4.0
-	tinygo.org/x/espflasher v0.8.1
-	tinygo.org/x/go-llvm v0.0.0-20260721072906-185673ef46a5
+	tinygo.org/x/espflasher v0.6.1
+	tinygo.org/x/go-llvm v0.0.0-20260422095634-06c6725fe5e6
 )

 require (
 	github.com/BurntSushi/toml v1.4.0 // indirect
 	github.com/chavacava/garif v0.1.0 // indirect
 	github.com/coreos/go-semver v0.3.1 // indirect
+	github.com/creack/goselect v0.1.2 // indirect
 	github.com/docker/libtrust v0.0.0-20160708172513-aabc10ec26b7 // indirect
 	github.com/fatih/color v1.17.0 // indirect
 	github.com/fatih/structtag v1.2.0 // indirect
@@ -47,6 +48,6 @@ require (
 	github.com/spf13/afero v1.11.0 // indirect
 	github.com/ulikunitz/xz v0.5.12 // indirect
 	github.com/urfave/cli/v3 v3.0.0-beta1 // indirect
-	golang.org/x/mod v0.37.0 // indirect
-	golang.org/x/text v0.38.0 // indirect
+	golang.org/x/mod v0.33.0 // indirect
+	golang.org/x/text v0.34.0 // indirect
 )
@@ -8,6 +8,8 @@ github.com/chavacava/garif v0.1.0 h1:2JHa3hbYf5D9dsgseMKAmc/MZ109otzgNFk5s87H9Pc
 github.com/chavacava/garif v0.1.0/go.mod h1:XMyYCkEL58DF0oyW4qDjjnPWONs2HBqYKI+UIPD+Gww=
 github.com/coreos/go-semver v0.3.1 h1:yi21YpKnrx1gt5R+la8n5WgS0kCrsPp33dmEyHReZr4=
 github.com/coreos/go-semver v0.3.1/go.mod h1:irMmmIw/7yzSRPWryHsK7EYSg09caPQL03VsM8rvUec=
+github.com/creack/goselect v0.1.2 h1:2DNy14+JPjRBgPzAd1thbQp4BSIihxcBf0IXhQXDRa0=
+github.com/creack/goselect v0.1.2/go.mod h1:a/NhLweNvqIYMuxcMOuWY516Cimucms3DglDzQP3hKY=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -87,30 +89,30 @@ github.com/ulikunitz/xz v0.5.12 h1:37Nm15o69RwBkXM0J6A5OlE67RZTfzUxTj8fB3dfcsc=
 github.com/ulikunitz/xz v0.5.12/go.mod h1:nbz6k7qbPmH4IRqmfOplQw/tblSgqTqBwxkY0oWt/14=
 github.com/urfave/cli/v3 v3.0.0-beta1 h1:6DTaaUarcM0wX7qj5Hcvs+5Dm3dyUTBbEwIWAjcw9Zg=
 github.com/urfave/cli/v3 v3.0.0-beta1/go.mod h1:FnIeEMYu+ko8zP1F9Ypr3xkZMIDqW3DR92yUtY39q1Y=
-go.bug.st/serial v1.8.0 h1:ZtnmN8aYXtPlTghwSvDWPHKBHL9TM6oFDa+KpSn4SQE=
-go.bug.st/serial v1.8.0/go.mod h1:d0MmS16Qt9b1m06yoYRNUXhRRTJV5Qg2S5EKqQtnayQ=
+go.bug.st/serial v1.6.4 h1:7FmqNPgVp3pu2Jz5PoPtbZ9jJO5gnEnZIvnI1lzve8A=
+go.bug.st/serial v1.6.4/go.mod h1:nofMJxTeNVny/m6+KaafC6vJGj3miwQZ6vW4BZUGJPI=
 go.bytecodealliance.org v0.6.2 h1:Jy4u5DVmSkXgsnwojBhJ+AD/YsJsR3VzVnxF0xRCqTQ=
 go.bytecodealliance.org v0.6.2/go.mod h1:gqjTJm0y9NSksG4py/lSjIQ/SNuIlOQ+hCIEPQwtJgA=
 go.bytecodealliance.org/cm v0.2.2 h1:M9iHS6qs884mbQbIjtLX1OifgyPG9DuMs2iwz8G4WQA=
 go.bytecodealliance.org/cm v0.2.2/go.mod h1:JD5vtVNZv7sBoQQkvBvAAVKJPhR/bqBH7yYXTItMfZI=
-golang.org/x/mod v0.37.0 h1:vF1DjpVEshcIqoEaauuHebaLk1O1forxjxBaVn884JQ=
-golang.org/x/mod v0.37.0/go.mod h1:m8S8VeM9r4dzDwjrKO0a1sZP3YjeMamRRlD+fmR2Q/0=
-golang.org/x/net v0.56.0 h1:Rw8j/hFzGvJUZwNBXnAtf5sVDVt+65SK2C7IxCxZt5o=
-golang.org/x/net v0.56.0/go.mod h1:D3Ku6r+V6JROoZK144D2XfMHFcMq/0zSfLelVTCFKec=
-golang.org/x/sync v0.21.0 h1:HLII4xRRTtCRkxYp4HNFF0Js/Og6q2i++KXbg0gHCwM=
-golang.org/x/sync v0.21.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
+golang.org/x/mod v0.33.0 h1:tHFzIWbBifEmbwtGz65eaWyGiGZatSrT9prnU8DbVL8=
+golang.org/x/mod v0.33.0/go.mod h1:swjeQEj+6r7fODbD2cqrnje9PnziFuw4bmLbBZFrQ5w=
+golang.org/x/net v0.50.0 h1:ucWh9eiCGyDR3vtzso0WMQinm2Dnt8cFMuQa9K33J60=
+golang.org/x/net v0.50.0/go.mod h1:UgoSli3F/pBgdJBHCTc+tp3gmrU4XswgGRgtnwWTfyM=
+golang.org/x/sync v0.19.0 h1:vV+1eWNmZ5geRlYjzm2adRgW2/mcpevXNg50YZtPCE4=
+golang.org/x/sync v0.19.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
 golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20191008105621-543471e840be/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191120155948-bd437916bb0e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.47.0 h1:o7XGOvZQCADBQQ4Y7VNq2dRWQR7JmOUW8Kxx4ZsNgWs=
-golang.org/x/sys v0.47.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
-golang.org/x/text v0.38.0 h1:sXmwo9DwP3OK9EZ7PqAdaooSGozfl/3a6/xJcbzPRhE=
-golang.org/x/text v0.38.0/go.mod h1:YXZt3QhHUKYT53r2lLKFIVi6Ao1jdzrTR/KQ09qyxF4=
-golang.org/x/tools v0.47.0 h1:7Kn5x/d1svx/PzryTsqeoZN4TZwqeH5pGWjefhLi/1Q=
-golang.org/x/tools v0.47.0/go.mod h1:dFHnyTvFWY212G+h7ZY4Vsp/K3U4/7W9TyVaAul8uCA=
+golang.org/x/sys v0.41.0 h1:Ivj+2Cp/ylzLiEU89QhWblYnOE9zerudt9Ftecq2C6k=
+golang.org/x/sys v0.41.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/text v0.34.0 h1:oL/Qq0Kdaqxa1KbNeMKwQq0reLCCaFtqu2eNuSeNHbk=
+golang.org/x/text v0.34.0/go.mod h1:homfLqTYRFyVYemLBFl5GgL/DWEiH5wcsQ5gSh1yziA=
+golang.org/x/tools v0.42.0 h1:uNgphsn75Tdz5Ji2q36v/nsFSfR/9BRFvqhGBaJGd5k=
+golang.org/x/tools v0.42.0/go.mod h1:Ma6lCIwGZvHK6XtgbswSoWroEkhugApmsXyrUmBhfr0=
 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 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
@@ -118,7 +120,7 @@ gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-tinygo.org/x/espflasher v0.8.1 h1:Vp+xA16af9NKVOOSJCcrJHqPSLDCpbfCd/TG3x449ks=
-tinygo.org/x/espflasher v0.8.1/go.mod h1:YLkCtOCz6gdrbueTi6uZbGPSYduTYt62JdNGmiGxgc0=
-tinygo.org/x/go-llvm v0.0.0-20260721072906-185673ef46a5 h1:0PKRhM1INWAi7PdIng1BHMPTDaRcOmv1UymdTgZ76Jo=
-tinygo.org/x/go-llvm v0.0.0-20260721072906-185673ef46a5/go.mod h1:GFbusT2VTA4I+l4j80b17KFK+6whv69Wtny5U+T8RR0=
+tinygo.org/x/espflasher v0.6.1 h1:9jfyAP9jGjxF63FQUY2Bml9TFb5fCZYxVgbgR2IjUGs=
+tinygo.org/x/espflasher v0.6.1/go.mod h1:tr5u08HoE67WD5zxJesCiiVF/R1b6Akz3yXwh5zah8U=
+tinygo.org/x/go-llvm v0.0.0-20260422095634-06c6725fe5e6 h1:QSnqFgNV2Ij0T4hM2qKv53fcDAFElxClPjVUZXzYkWU=
+tinygo.org/x/go-llvm v0.0.0-20260422095634-06c6725fe5e6/go.mod h1:GFbusT2VTA4I+l4j80b17KFK+6whv69Wtny5U+T8RR0=
@@ -151,8 +151,6 @@ func Get(name string) string {
 			panic("could not find cache dir: " + err.Error())
 		}
 		return filepath.Join(dir, "tinygo")
-	case "CGO_CFLAGS":
-		return os.Getenv("CGO_CFLAGS")
 	case "CGO_ENABLED":
 		// Always enable CGo. It is required by a number of targets, including
 		// macOS and the rp2040.
@@ -140,30 +140,18 @@ func (r *runner) compileFunction(llvmFn llvm.Value) *function {
 					panic("unknown number of operands")
 				}
 			case llvm.Switch:
-				// Compile to an array of (value, label) pairs, of which the
+				// A switch is an array of (value, label) pairs, of which the
 				// first one indicates the to-switch value and the default
 				// label.
-				//
-				// Successor 0 is always the default destination; successors
-				// 1..N-1 are the individual cases. This must be read via
-				// GetSwitchCaseValue/Successor rather than raw operands,
-				// because LLVM 22 stopped exposing switch case values as
-				// regular instruction operands (only the condition and
-				// destination-block operands remain).
-				inst.operands = append(inst.operands,
-					r.getValue(llvmInst.Operand(0)),
-					literalValue{uint32(blockIndices[llvmInst.Successor(0).AsValue()])},
-				)
-				for i := 1; i < llvmInst.SuccessorsCount(); i++ {
-					inst.operands = append(inst.operands,
-						r.getValue(llvmInst.GetSwitchCaseValue(i)),
-						literalValue{uint32(blockIndices[llvmInst.Successor(i).AsValue()])},
-					)
+				numOperands := llvmInst.OperandsCount()
+				for i := 0; i < numOperands; i += 2 {
+					inst.operands = append(inst.operands, r.getValue(llvmInst.Operand(i)))
+					inst.operands = append(inst.operands, literalValue{uint32(blockIndices[llvmInst.Operand(i+1)])})
 				}
 			case llvm.PHI:
 				inst.name = llvmInst.Name()
 				incomingCount := inst.llvmInst.IncomingCount()
-				for i := range incomingCount {
+				for i := 0; i < incomingCount; i++ {
 					incomingBB := inst.llvmInst.IncomingBlock(i)
 					incomingValue := inst.llvmInst.IncomingValue(i)
 					inst.operands = append(inst.operands,
@@ -2,7 +2,6 @@ package interp

 import (
 	"os"
-	"regexp"
 	"strings"
 	"testing"
 	"time"
@@ -22,8 +21,8 @@ func TestInterp(t *testing.T) {
 		"store",
 		"alloc",
 		"slicedata",
-		"aggregate",
 	} {
+		name := name // make local to this closure
 		t.Run(name, func(t *testing.T) {
 			t.Parallel()
 			runTest(t, "testdata/"+name)
@@ -94,16 +93,6 @@ func runTest(t *testing.T, pathPrefix string) {
 // equal. That means, only relevant lines are compared (excluding comments
 // etc.).
 func fuzzyEqualIR(s1, s2 string) bool {
-	// Golden files are written using the pre-LLVM21 'nocapture' spelling,
-	// which LLVM printed before any co-occurring attribute such as
-	// 'readonly' (e.g. "ptr nocapture readonly"). LLVM 21+ prints the
-	// equivalent 'captures(none)' instead, and after such attributes (e.g.
-	// "ptr readonly captures(none)"). Normalize both name and position back
-	// to the old spelling to keep a single golden file working across LLVM
-	// versions.
-	s1 = normalizeCapturesAttr(s1)
-	s2 = normalizeCapturesAttr(s2)
-
 	lines1 := filterIrrelevantIRLines(strings.Split(s1, "\n"))
 	lines2 := filterIrrelevantIRLines(strings.Split(s2, "\n"))
 	if len(lines1) != len(lines2) {
@@ -119,21 +108,6 @@ func fuzzyEqualIR(s1, s2 string) bool {
 	return true
 }

-// capturesNoneAttrRe matches a co-occurring attribute directly followed by
-// 'captures(none)', which is how LLVM 21+ orders these two attributes when
-// printing IR (the pre-LLVM21 'nocapture' attribute printed the other way
-// around).
-var capturesNoneAttrRe = regexp.MustCompile(`\b(readonly|readnone|writeonly|nonnull)\s+captures\(none\)`)
-
-// normalizeCapturesAttr rewrites LLVM 21+'s 'captures(none)' attribute back
-// to the pre-LLVM21 'nocapture' spelling and position, so golden IR files
-// written against LLVM <21 keep matching.
-func normalizeCapturesAttr(s string) string {
-	s = capturesNoneAttrRe.ReplaceAllString(s, "nocapture $1")
-	s = strings.ReplaceAll(s, "captures(none)", "nocapture")
-	return s
-}
-
 // filterIrrelevantIRLines removes lines from the input slice of strings that
 // are not relevant in comparing IR. For example, empty lines and comments are
 // stripped out.
@@ -5,7 +5,6 @@ import (
 	"fmt"
 	"math"
 	"os"
-	"slices"
 	"strconv"
 	"strings"
 	"time"
@@ -471,7 +470,7 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 				// should be returned.
 				numMethods := int(r.builder.CreateExtractValue(methodSet, 0, "").ZExtValue())
 				var method llvm.Value
-				for i := range numMethods {
+				for i := 0; i < numMethods; i++ {
 					methodSignatureAgg := r.builder.CreateExtractValue(methodSet, 1, "")
 					methodSignature := r.builder.CreateExtractValue(methodSignatureAgg, i, "")
 					if methodSignature == signature {
@@ -908,7 +907,7 @@ func (r *runner) interpretICmp(lhs, rhs value, predicate llvm.IntPredicate) bool
 func (r *runner) runAtRuntime(fn *function, inst instruction, locals []value, mem *memoryView, indent string) *Error {
 	numOperands := inst.llvmInst.OperandsCount()
 	operands := make([]llvm.Value, numOperands)
-	for i := range numOperands {
+	for i := 0; i < numOperands; i++ {
 		operand := inst.llvmInst.Operand(i)
 		if !operand.IsAInstruction().IsNil() || !operand.IsAArgument().IsNil() {
 			var err error
@@ -928,9 +927,11 @@ func (r *runner) runAtRuntime(fn *function, inst instruction, locals []value, me
 		llvmFn := operands[len(operands)-1]
 		args := operands[:len(operands)-1]
 		for _, op := range operands {
-			err := mem.markExternalStore(op)
-			if err != nil {
-				return r.errorAt(inst, err)
+			if op.Type().TypeKind() == llvm.PointerTypeKind {
+				err := mem.markExternalStore(op)
+				if err != nil {
+					return r.errorAt(inst, err)
+				}
 			}
 		}
 		result = r.builder.CreateCall(inst.llvmInst.CalledFunctionType(), llvmFn, args, inst.name)
@@ -984,9 +985,9 @@ func (r *runner) runAtRuntime(fn *function, inst instruction, locals []value, me
 			mem.instructions = append(mem.instructions, agg)
 		}
 		result = operands[1]
-		for i, indice := range slices.Backward(indices) {
+		for i := len(indices) - 1; i >= 0; i-- {
 			agg := aggregates[i]
-			result = r.builder.CreateInsertValue(agg, result, int(indice), inst.name+".insertvalue"+strconv.Itoa(i))
+			result = r.builder.CreateInsertValue(agg, result, int(indices[i]), inst.name+".insertvalue"+strconv.Itoa(i))
 			if i != 0 { // don't add last result to mem.instructions as it will be done at the end already
 				mem.instructions = append(mem.instructions, result)
 			}
@@ -18,10 +18,8 @@ import (
 	"encoding/binary"
 	"errors"
 	"fmt"
-	"maps"
 	"math"
 	"math/big"
-	"slices"
 	"strconv"
 	"strings"

@@ -82,7 +80,9 @@ func (mv *memoryView) extend(sub memoryView) {
 	if mv.objects == nil && len(sub.objects) != 0 {
 		mv.objects = make(map[uint32]object)
 	}
-	maps.Copy(mv.objects, sub.objects)
+	for key, value := range sub.objects {
+		mv.objects[key] = value
+	}
 	mv.instructions = append(mv.instructions, sub.instructions...)
 }

@@ -90,8 +90,8 @@ func (mv *memoryView) extend(sub memoryView) {
 // created in this memoryView. Do not reuse this memoryView.
 func (mv *memoryView) revert() {
 	// Erase instructions in reverse order.
-	for _, llvmInst := range slices.Backward(mv.instructions) {
-
+	for i := len(mv.instructions) - 1; i >= 0; i-- {
+		llvmInst := mv.instructions[i]
 		if llvmInst.IsAInstruction().IsNil() {
 			// The IR builder will try to create constant versions of
 			// instructions whenever possible. If it does this, it's not an
@@ -172,7 +172,7 @@ func (mv *memoryView) markExternal(llvmValue llvm.Value, mark uint8) error {
 							continue
 						}
 						numOperands := inst.OperandsCount()
-						for i := range numOperands {
+						for i := 0; i < numOperands; i++ {
 							// Using mark '2' (which means read/write access)
 							// because this might be a store instruction.
 							err := mv.markExternal(inst.Operand(i), 2)
@@ -215,7 +215,7 @@ func (mv *memoryView) markExternal(llvmValue llvm.Value, mark uint8) error {
 			// need any marking.
 		case llvm.StructTypeKind:
 			numElements := llvmType.StructElementTypesCount()
-			for i := range numElements {
+			for i := 0; i < numElements; i++ {
 				element := mv.r.builder.CreateExtractValue(llvmValue, i, "")
 				err := mv.markExternal(element, mark)
 				if err != nil {
@@ -224,7 +224,7 @@ func (mv *memoryView) markExternal(llvmValue llvm.Value, mark uint8) error {
 			}
 		case llvm.ArrayTypeKind:
 			numElements := llvmType.ArrayLength()
-			for i := range numElements {
+			for i := 0; i < numElements; i++ {
 				element := mv.r.builder.CreateExtractValue(llvmValue, i, "")
 				err := mv.markExternal(element, mark)
 				if err != nil {
@@ -366,7 +366,7 @@ func (mv *memoryView) store(v value, p pointerValue) bool {
 		buffer := obj.buffer.asRawValue(mv.r)
 		obj.buffer = buffer
 		v := v.asRawValue(mv.r)
-		for i := range valueLen {
+		for i := uint32(0); i < valueLen; i++ {
 			buffer.buf[p.offset()+i] = v.buf[i]
 		}
 	}
@@ -392,7 +392,7 @@ type value interface {
 // literalValue contains simple integer values that don't need to be stored in a
 // buffer.
 type literalValue struct {
-	value any
+	value interface{}
 }

 // Make a literalValue given the number of bits.
@@ -931,10 +931,10 @@ func (v rawValue) toLLVMValue(llvmType llvm.Type, mem *memoryView) (llvm.Value,
 				return llvm.Value{}, err
 			}
 		}
-		// Always use ConstNamedStruct to preserve the exact type identity.
-		// ConstStruct creates a literal struct type which may differ from an
-		// anonymous identified struct even when structurally identical.
-		return llvm.ConstNamedStruct(llvmType, fields), nil
+		if llvmType.StructName() != "" {
+			return llvm.ConstNamedStruct(llvmType, fields), nil
+		}
+		return llvmType.Context().ConstStruct(fields, false), nil
 	case llvm.ArrayTypeKind:
 		numElements := llvmType.ArrayLength()
 		childType := llvmType.ElementType()
@@ -1015,7 +1015,7 @@ func (v *rawValue) set(llvmValue llvm.Value, r *runner) {
 		if err != nil {
 			panic(err)
 		}
-		for i := range ptrSize {
+		for i := uint32(0); i < ptrSize; i++ {
 			v.buf[i] = ptr.pointer
 		}
 	} else if !llvmValue.IsAConstantExpr().IsNil() {
@@ -1056,7 +1056,7 @@ func (v *rawValue) set(llvmValue llvm.Value, r *runner) {
 				panic(err)
 			}
 			ptrValue.pointer += totalOffset
-			for i := range ptrSize {
+			for i := uint32(0); i < ptrSize; i++ {
 				v.buf[i] = ptrValue.pointer
 			}
 		case llvm.ICmp:
@@ -1113,7 +1113,7 @@ func (v *rawValue) set(llvmValue llvm.Value, r *runner) {
 			}
 		case llvm.StructTypeKind:
 			numElements := llvmType.StructElementTypesCount()
-			for i := range numElements {
+			for i := 0; i < numElements; i++ {
 				offset := r.targetData.ElementOffset(llvmType, i)
 				field := rawValue{
 					buf: v.buf[offset:],
@@ -1124,7 +1124,7 @@ func (v *rawValue) set(llvmValue llvm.Value, r *runner) {
 			numElements := llvmType.ArrayLength()
 			childType := llvmType.ElementType()
 			childTypeSize := r.targetData.TypeAllocSize(childType)
-			for i := range numElements {
+			for i := 0; i < numElements; i++ {
 				offset := i * int(childTypeSize)
 				field := rawValue{
 					buf: v.buf[offset:],
@@ -1,27 +0,0 @@
-target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
-target triple = "x86_64--linux"
-
-declare void @externalAggregate({ ptr })
-
-@main.value = global i32 1
-@main.result = global i32 0
-
-define void @runtime.initAll() unnamed_addr {
-entry:
-  call void @main.init(ptr undef)
-  ret void
-}
-
-define internal void @main.init(ptr %context) unnamed_addr {
-entry:
-  ; The pointer is hidden inside an aggregate argument.
-  %arg = insertvalue { ptr } undef, ptr @main.value, 0
-
-  ; This call runs at runtime and may modify @main.value.
-  call void @externalAggregate({ ptr } %arg)
-
-  ; Therefore this load must also remain at runtime.
-  %value = load i32, ptr @main.value
-  store i32 %value, ptr @main.result
-  ret void
-}
@@ -1,15 +0,0 @@
-target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
-target triple = "x86_64--linux"
-
-@main.value = global i32 1
-@main.result = local_unnamed_addr global i32 0
-
-declare void @externalAggregate({ ptr }) local_unnamed_addr
-
-define void @runtime.initAll() unnamed_addr {
-entry:
-  call void @externalAggregate({ ptr } { ptr @main.value })
-  %value = load i32, ptr @main.value, align 4
-  store i32 %value, ptr @main.result, align 4
-  ret void
-}
@@ -22,7 +22,6 @@ import (
 	"strings"
 	"unicode"

-	"github.com/google/shlex"
 	"github.com/tinygo-org/tinygo/cgo"
 	"github.com/tinygo-org/tinygo/compileopts"
 	"github.com/tinygo-org/tinygo/goenv"
@@ -507,11 +506,6 @@ func (p *Package) parseFiles() ([]*ast.File, error) {
 		var initialCFlags []string
 		initialCFlags = append(initialCFlags, p.program.config.CFlags(true)...)
 		initialCFlags = append(initialCFlags, "-I"+p.Dir)
-		cgoCFlags, err := shlex.Split(goenv.Get("CGO_CFLAGS"))
-		if err != nil {
-			return nil, fmt.Errorf("failed to split CGO_CFLAGS: %w", err)
-		}
-		initialCFlags = append(initialCFlags, cgoCFlags...)
 		generated, headerCode, cflags, ldflags, accessedFiles, errs := cgo.Process(files, p.program.workingDir, p.ImportPath, p.program.fset, initialCFlags, p.program.config.GOOS())
 		p.CFlags = append(initialCFlags, cflags...)
 		p.CGoHeaders = headerCode
@@ -177,15 +177,8 @@ func Build(pkgName, outpath string, config *compileopts.Config) error {
 				// Pick a default output path based on the main directory.
 				outpath = filepath.Base(result.MainDir) + config.DefaultBinaryExtension()
 			}
-		} else if fi, statErr := os.Stat(outpath); statErr == nil && fi.IsDir() {
-			var name string
-			if strings.HasSuffix(pkgName, ".go") {
-				name = filepath.Base(pkgName[:len(pkgName)-3]) + config.DefaultBinaryExtension()
-			} else {
-				name = filepath.Base(result.MainDir) + config.DefaultBinaryExtension()
-			}
-			outpath = filepath.Join(outpath, name)
 		}
+
 		if err := os.Rename(result.Binary, outpath); err != nil {
 			// Moving failed. Do a file copy.
 			inf, err := os.Open(result.Binary)
@@ -793,15 +786,15 @@ func Debug(debugger, pkgName string, ocdOutput bool, options *compileopts.Option
 		}
 		defer func() {
 			daemon.Process.Signal(os.Interrupt)
-			var stopped atomic.Uint32
+			var stopped uint32
 			go func() {
 				time.Sleep(time.Millisecond * 100)
-				if stopped.Load() == 0 {
+				if atomic.LoadUint32(&stopped) == 0 {
 					daemon.Process.Kill()
 				}
 			}()
 			daemon.Wait()
-			stopped.Store(1)
+			atomic.StoreUint32(&stopped, 1)
 		}()
 	}

@@ -1053,7 +1046,7 @@ func buildAndRun(pkgName string, config *compileopts.Config, stdout io.Writer, c

 func touchSerialPortAt1200bps(port string) (err error) {
 	retryCount := 3
-	for range retryCount {
+	for i := 0; i < retryCount; i++ {
 		// Open port
 		p, e := serial.Open(port, &serial.Mode{BaudRate: 1200})
 		if e != nil {
@@ -1129,19 +1122,13 @@ const (
 	jtagReset    = "jtag"
 )

-var progressFunc = func(current, total int) {
-	pct := float64(current) / float64(total) * 100
-	bar := int(pct / 2)
-	fmt.Printf("\r[%-50s] %6.1f%%", strings.Repeat("#", bar)+strings.Repeat(".", 50-bar), pct)
-	if current >= total {
-		fmt.Println()
-	}
-}
-
 func flashBinUsingEsp32(port, resetMode, tmppath string, options *compileopts.Options) error {
 	opts := espflasher.DefaultOptions()
 	opts.Compress = true
 	opts.Logger = &espflasher.StdoutLogger{W: os.Stdout}
+	if options.BaudRate != 0 {
+		opts.FlashBaudRate = options.BaudRate
+	}

 	if resetMode == jtagReset {
 		opts.ResetMode = espflasher.ResetUSBJTAG
@@ -1165,12 +1152,21 @@ func flashBinUsingEsp32(port, resetMode, tmppath string, options *compileopts.Op
 		return err
 	}

-	if err := flasher.EraseFlash(progressFunc); err != nil {
+	if err := flasher.EraseFlash(); err != nil {
 		return fmt.Errorf("erase failed: %v", err)
 	}

+	progress := func(current, total int) {
+		pct := float64(current) / float64(total) * 100
+		bar := int(pct / 2)
+		fmt.Printf("\r[%-50s] %6.1f%%", strings.Repeat("#", bar)+strings.Repeat(".", 50-bar), pct)
+		if current >= total {
+			fmt.Println()
+		}
+	}
+
 	// Flash with progress reporting
-	err = flasher.FlashImage(data, offset, progressFunc)
+	err = flasher.FlashImage(data, offset, progress)
 	if err != nil {
 		return err
 	}
@@ -1248,7 +1244,7 @@ func findFATMounts(options *compileopts.Options) ([]mountPoint, error) {
 		if err != nil {
 			return nil, fmt.Errorf("could not list mount points: %w", err)
 		}
-		for line := range strings.SplitSeq(string(tab), "\n") {
+		for _, line := range strings.Split(string(tab), "\n") {
 			fields := strings.Fields(line)
 			if len(fields) <= 2 {
 				continue
@@ -1277,7 +1273,7 @@ func findFATMounts(options *compileopts.Options) ([]mountPoint, error) {
 		}

 		// Extract data to convert to a []mountPoint slice.
-		for line := range strings.SplitSeq(out.String(), "\n") {
+		for _, line := range strings.Split(out.String(), "\n") {
 			words := strings.Fields(line)
 			if len(words) < 3 {
 				continue
@@ -1689,18 +1685,18 @@ func (m globalValuesFlag) String() string {
 }

 func (m globalValuesFlag) Set(value string) error {
-	before, after, ok := strings.Cut(value, "=")
-	if !ok {
+	equalsIndex := strings.IndexByte(value, '=')
+	if equalsIndex < 0 {
 		return errors.New("expected format pkgpath.Var=value")
 	}
-	pathAndName := before
+	pathAndName := value[:equalsIndex]
 	pointIndex := strings.LastIndexByte(pathAndName, '.')
 	if pointIndex < 0 {
 		return errors.New("expected format pkgpath.Var=value")
 	}
 	path := pathAndName[:pointIndex]
 	name := pathAndName[pointIndex+1:]
-	stringValue := after
+	stringValue := value[equalsIndex+1:]
 	if m[path] == nil {
 		m[path] = make(map[string]string)
 	}
@@ -2058,6 +2054,7 @@ func main() {
 		// This uses an additional semaphore to reduce the memory usage.
 		testSema := make(chan struct{}, cap(options.Semaphore))
 		for i, pkgName := range explicitPkgNames {
+			pkgName := pkgName
 			buf := &bufs[i]
 			testSema <- struct{}{}
 			wg.Add(1)
@@ -59,11 +59,6 @@ func TestBuild(t *testing.T) {
 		"cgo/",
 		"channel.go",
 		"embed/",
-		"finalizer.go",
-		"finalizerbits.go",
-		"finalizeridle.go",
-		"finalizerinvariants.go",
-		"finalizerlarge.go",
 		"float.go",
 		"gc.go",
 		"generics.go",
@@ -120,25 +115,7 @@ func TestBuild(t *testing.T) {

 	t.Run("Host", func(t *testing.T) {
 		t.Parallel()
-		hostOptions := optionsFromTarget("", sema)
-		runPlatTests(hostOptions, tests, t)
-
-		// scheduler.threads needs threadID, which exists only on Linux and Darwin.
-		// scheduler.none does not link on Windows.
-		switch runtime.GOOS {
-		case "darwin", "linux":
-			for _, scheduler := range []string{"threads", "none"} {
-				scheduler := scheduler
-				t.Run("finalizerinvariants.go-gc-conservative-scheduler-"+scheduler, func(t *testing.T) {
-					t.Parallel()
-					options := compileopts.Options(hostOptions)
-					options.GC = "conservative"
-					options.Scheduler = scheduler
-					options.Tags = append(append([]string(nil), hostOptions.Tags...), "runtime_asserts")
-					runTest("finalizerinvariants.go", options, t, nil, nil)
-				})
-			}
-		}
+		runPlatTests(optionsFromTarget("", sema), tests, t)
 	})

 	// Test a few build options.
@@ -268,36 +245,6 @@ func TestBuild(t *testing.T) {
 	}
 }

-// TestTimerStopResetRace checks that stopping or resetting a timer while its
-// callback is running behaves correctly. It reaches into the runtime timer
-// hooks via //go:linkname and relies on the threads scheduler, which is only
-// used on these hosts.
-func TestTimerStopResetRace(t *testing.T) {
-	t.Parallel()
-
-	switch runtime.GOOS {
-	case "darwin", "linux":
-	default:
-		t.Skipf("host GOOS %s does not use the threads scheduler", runtime.GOOS)
-	}
-	runTest("timer_stop_reset_race.go", optionsFromTarget("", sema), t, nil, nil)
-}
-
-func TestESP32QEMU(t *testing.T) {
-	t.Parallel()
-
-	options := optionsFromTarget("esp32-qemu", sema)
-	emuCheck(t, options)
-	machines, err := exec.Command("qemu-system-xtensa", "-machine", "help").Output()
-	if err != nil {
-		t.Fatal("failed to list qemu-system-xtensa machines:", err)
-	}
-	if !regexp.MustCompile(`(?m)^esp32\s`).Match(machines) {
-		t.Skip("qemu-system-xtensa does not support the ESP32 machine")
-	}
-	runTest("print.go", options, t, nil, nil)
-}
-
 func runPlatTests(options compileopts.Options, tests []string, t *testing.T) {
 	emuCheck(t, options)

@@ -311,17 +258,8 @@ func runPlatTests(options compileopts.Options, tests []string, t *testing.T) {
 	isWASI := strings.HasPrefix(options.Target, "wasi")
 	isWebAssembly := isWASI || strings.HasPrefix(options.Target, "wasm") || (options.Target == "" && strings.HasPrefix(options.GOARCH, "wasm"))
 	isBaremetal := options.Target == "simavr" || options.Target == "cortex-m-qemu" || options.Target == "riscv-qemu"
-	_, goMinor, err := goenv.GetGorootVersion()
-	if err != nil {
-		t.Fatal("could not get version:", goMinor)
-	}

 	for _, name := range tests {
-		if name == "goroutines.go" && (spec.Scheduler == "threads" || spec.Scheduler == "cores") {
-			// This test intentionally checks concurrent scheduling by comparing
-			// output order, so only run it with non-threaded schedulers.
-			continue
-		}
 		if options.GOOS == "linux" && (options.GOARCH == "arm" || options.GOARCH == "386") {
 			switch name {
 			case "timers.go":
@@ -343,11 +281,6 @@ func runPlatTests(options compileopts.Options, tests []string, t *testing.T) {
 				continue
 			}
 		}
-		if options.Target == "cortex-m-qemu" && goMinor >= 27 && name == "json.go" {
-			// Go 1.27 jsonv2 exceeds the LM3S6965's 256KiB flash. json.go
-			// is still covered by larger targets such as riscv-qemu.
-			continue
-		}
 		if options.Target == "simavr" {
 			// Not all tests are currently supported on AVR.
 			// Skip the ones that aren't.
@@ -401,38 +334,11 @@ func runPlatTests(options compileopts.Options, tests []string, t *testing.T) {
 				continue
 			}
 		}
-		if options.Target != "wasm" {
-			switch name {
-			case "finalizer.go", "finalizerbits.go", "finalizeridle.go", "finalizerlarge.go":
-				// These tests require deterministic finalization on target wasm.
-				// finalizerinvariants.go covers other block GC targets.
-				continue
-			}
-		}
-		if options.Target == "" && options.GC == "" {
-			switch name {
-			case "finalizerinvariants.go":
-				// Skip the default host GC because it does not implement finalizers.
-				// Explicit conservative GC variants cover this test.
-				continue
-			}
-		}
-		if options.Target == "simavr" {
-			switch name {
-			case "finalizerinvariants.go":
-				// Skip because runtime.GC does not return. See the gc.go exclusion above.
-				continue
-			}
-		}

 		name := name // redefine to avoid race condition
 		t.Run(name, func(t *testing.T) {
 			t.Parallel()
-			testOptions := compileopts.Options(options)
-			if name == "finalizerinvariants.go" || name == "finalizerlarge.go" {
-				testOptions.Tags = append(append([]string(nil), options.Tags...), "runtime_asserts")
-			}
-			runTest(name, testOptions, t, nil, nil)
+			runTest(name, options, t, nil, nil)
 		})
 	}
 	if !strings.HasPrefix(spec.Emulator, "simavr ") {
@@ -477,7 +383,7 @@ func emuCheck(t *testing.T, options compileopts.Options) {
 		t.Fatal("failed to load target spec:", err)
 	}
 	if spec.Emulator != "" {
-		emulatorCommand, _, _ := strings.Cut(spec.Emulator, " ")
+		emulatorCommand := strings.SplitN(spec.Emulator, " ", 2)[0]
 		_, err := exec.LookPath(emulatorCommand)
 		if err != nil {
 			if errors.Is(err, exec.ErrNotFound) {
@@ -552,12 +458,6 @@ func runTestWithConfig(name string, t *testing.T, options compileopts.Options, c
 		options.Directory = path
 		pkgName = "."
 	}
-	isWebAssembly := strings.HasPrefix(options.Target, "wasi") ||
-		strings.HasPrefix(options.Target, "wasm") ||
-		strings.HasPrefix(options.GOARCH, "wasm")
-	if name == "testing.go" && isWebAssembly {
-		expectedOutputPath = TESTDATA + "/testing-wasm.txt"
-	}

 	config, err := builder.NewConfig(&options)
 	if err != nil {
@@ -567,18 +467,12 @@ func runTestWithConfig(name string, t *testing.T, options compileopts.Options, c
 	// Build the test binary.
 	stdout := &bytes.Buffer{}
 	_, err = buildAndRun(pkgName, config, stdout, cmdArgs, environmentVars, 2*time.Minute, func(cmd *exec.Cmd, result builder.BuildResult) error {
-		if config.EmulatorName() == "simavr" {
-			// simavr before v1.8 wrote firmware output to stderr and loader logs
-			// to stdout, but PR #490 swapped these streams:
-			// https://github.com/buserror/simavr/pull/490
-			cmd.Stdout = stdout
-		}
 		return cmd.Run()
 	})
 	if err != nil {
 		w := &bytes.Buffer{}
 		diagnostics.CreateDiagnostics(err).WriteTo(w, "")
-		for line := range strings.SplitSeq(strings.TrimRight(w.String(), "\n"), "\n") {
+		for _, line := range strings.Split(strings.TrimRight(w.String(), "\n"), "\n") {
 			t.Log(line)
 		}
 		if stdout.Len() != 0 {
@@ -590,10 +484,11 @@ func runTestWithConfig(name string, t *testing.T, options compileopts.Options, c

 	actual := stdout.Bytes()
 	if config.EmulatorName() == "simavr" {
-		actual = cleanSimAVRTestOutput(actual)
-	}
-	if config.EmulatorName() == "qemu-system-xtensa" {
-		actual = cleanESP32QEMUOutput(actual)
+		// Strip simavr log formatting.
+		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.
@@ -620,40 +515,6 @@ func runTestWithConfig(name string, t *testing.T, options compileopts.Options, c
 	}
 }

-func cleanESP32QEMUOutput(output []byte) []byte {
-	entryLine := bytes.Index(output, []byte("\nentry "))
-	if entryLine < 0 {
-		return output
-	}
-	entryLineEnd := bytes.IndexByte(output[entryLine+1:], '\n')
-	if entryLineEnd < 0 {
-		return output
-	}
-	return output[entryLine+1+entryLineEnd+1:]
-}
-
-func cleanSimAVRTestOutput(output []byte) []byte {
-	output = bytes.ReplaceAll(output, []byte{0x1b, '[', '3', '2', 'm'}, nil)
-	output = bytes.ReplaceAll(output, []byte{0x1b, '[', '0', 'm'}, nil)
-	output = bytes.ReplaceAll(output, []byte{'.', '.', '\n'}, []byte{'\n'})
-	output = bytes.ReplaceAll(output, []byte{'\n', '.', '\n'}, []byte{'\n', '\n'})
-
-	var cleaned []byte
-	for _, line := range bytes.SplitAfter(output, []byte{'\n'}) {
-		trimmedLine := bytes.TrimRight(line, "\r\n")
-		if simavrLoadTextLogPattern.Match(trimmedLine) || simavrLoadBytesLogPattern.Match(trimmedLine) {
-			continue
-		}
-		cleaned = append(cleaned, line...)
-	}
-	return cleaned
-}
-
-var (
-	simavrLoadTextLogPattern  = regexp.MustCompile(`^Loaded [0-9]+ \.[A-Za-z0-9_]+( at address 0x[0-9a-fA-F]+)?$`)
-	simavrLoadBytesLogPattern = regexp.MustCompile(`^Loaded [0-9]+ bytes of [A-Za-z]+ data at (0x)?[0-9a-fA-F]+$`)
-)
-
 // Test WebAssembly files for certain properties.
 func TestWebAssembly(t *testing.T) {
 	t.Parallel()
@@ -669,6 +530,7 @@ func TestWebAssembly(t *testing.T) {
 		{name: "panic-default", target: "wasip1", imports: []string{"wasi_snapshot_preview1.fd_write", "wasi_snapshot_preview1.random_get"}},
 		{name: "panic-trap", target: "wasm-unknown", panicStrategy: "trap", imports: []string{}},
 	} {
+		tc := tc
 		t.Run(tc.name, func(t *testing.T) {
 			t.Parallel()
 			tmpdir := t.TempDir()
@@ -790,6 +652,7 @@ func TestWasmExport(t *testing.T) {
 	}

 	for _, tc := range tests {
+		tc := tc
 		t.Run(tc.name, func(t *testing.T) {
 			t.Parallel()

@@ -959,6 +822,7 @@ func TestWasmExportJS(t *testing.T) {
 		{name: "c-shared", buildMode: "c-shared"},
 	}
 	for _, tc := range tests {
+		tc := tc
 		t.Run(tc.name, func(t *testing.T) {
 			t.Parallel()
 			// Build the wasm binary.
@@ -988,30 +852,6 @@ func TestWasmExportJS(t *testing.T) {
 	}
 }

-func TestWasmExportFinalizersJS(t *testing.T) {
-	t.Parallel()
-
-	tmpdir := t.TempDir()
-	options := optionsFromTarget("wasm", sema)
-	options.BuildMode = "c-shared"
-	buildConfig, err := builder.NewConfig(&options)
-	if err != nil {
-		t.Fatal(err)
-	}
-	result, err := builder.Build("testdata/wasmexport-finalizer.go", ".wasm", tmpdir, buildConfig)
-	if err != nil {
-		t.Fatal("failed to build binary:", err)
-	}
-
-	output := &bytes.Buffer{}
-	cmd := exec.Command("node", "testdata/wasmexport-finalizer.js", result.Binary)
-	cmd.Stdout = output
-	cmd.Stderr = output
-	if err := cmd.Run(); err != nil {
-		t.Fatalf("failed to run node: %v\n%s", err, output)
-	}
-}
-
 // Test whether Go.run() (in wasm_exec.js) normally returns and returns the
 // right exit code.
 func TestWasmExit(t *testing.T) {
@@ -1030,6 +870,7 @@ func TestWasmExit(t *testing.T) {
 		{name: "exit-1-sleep", output: "slept\nexit code: 1\n"},
 	}
 	for _, tc := range tests {
+		tc := tc
 		t.Run(tc.name, func(t *testing.T) {
 			t.Parallel()
 			options := optionsFromTarget("wasm", sema)
@@ -1072,76 +913,6 @@ func checkOutputData(t *testing.T, expectedOutput, actual []byte) {
 	}
 }

-func TestGoexitCrash(t *testing.T) {
-	t.Parallel()
-
-	options := optionsFromTarget("", sema)
-	config, err := builder.NewConfig(&options)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	for _, tc := range []struct {
-		name string
-		want string
-	}{
-		{"main", "fatal error: all goroutines are asleep - deadlock!"},
-		{"deadlock", "fatal error: all goroutines are asleep - deadlock!"},
-		{"exit", "fatal error: all goroutines are asleep - deadlock!"},
-		{"main-other", "fatal error: all goroutines are asleep - deadlock!"},
-		{"in-panic", "fatal error: all goroutines are asleep - deadlock!"},
-		{"panic", "panic: panic after Goexit"},
-		{"recovered-panic", "fatal error: all goroutines are asleep - deadlock!"},
-		{"recover-before-panic", "fatal error: all goroutines are asleep - deadlock!"},
-		{"recover-before-panic-loop", "fatal error: all goroutines are asleep - deadlock!"},
-	} {
-		t.Run(tc.name, func(t *testing.T) {
-			output := &bytes.Buffer{}
-			_, err = buildAndRun("testdata/goexit.go", config, output, []string{tc.name}, nil, time.Minute, func(cmd *exec.Cmd, result builder.BuildResult) error {
-				cmd.Stdout = nil
-				cmd.Stderr = nil
-				data, err := cmd.CombinedOutput()
-				output.Write(data)
-				return err
-			})
-			if err == nil {
-				t.Fatal("program unexpectedly exited successfully")
-			}
-			if !strings.Contains(output.String(), tc.want) {
-				t.Fatalf("output does not contain %q:\n%s", tc.want, output.String())
-			}
-		})
-	}
-}
-
-func TestRuntimeFatal(t *testing.T) {
-	t.Parallel()
-
-	options := optionsFromTarget("", sema)
-	config, err := builder.NewConfig(&options)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	output := &bytes.Buffer{}
-	_, err = buildAndRun("testdata/runtimefatal.go", config, output, nil, nil, time.Minute, func(cmd *exec.Cmd, result builder.BuildResult) error {
-		cmd.Stdout = nil
-		cmd.Stderr = nil
-		data, err := cmd.CombinedOutput()
-		output.Write(data)
-		return err
-	})
-	if err == nil {
-		t.Fatal("program unexpectedly exited successfully")
-	}
-	if want := "fatal error: sync: unlock of unlocked Mutex"; !strings.Contains(output.String(), want) {
-		t.Fatalf("output does not contain %q:\n%s", want, output.String())
-	}
-	if strings.Contains(output.String(), "recovered:") {
-		t.Fatalf("fatal runtime error was recovered:\n%s", output.String())
-	}
-}
-
 func TestTest(t *testing.T) {
 	t.Parallel()

@@ -1174,6 +945,7 @@ func TestTest(t *testing.T) {
 		)
 	}
 	for _, targ := range targs {
+		targ := targ
 		t.Run(targ.name, func(t *testing.T) {
 			t.Parallel()

--- a/Show More
+++ b/Show More