runtime: use exitGoroutine instead of deadlock

This makes the meaning more clear. And while the behavior is currently
the same, when we start to use threads we should actually exit the
goroutine when calling runtime.Goexit() instead of just leaving it
deadlocked.

.circleci/config.yml

@@ -92,28 +92,28 @@ commands:
             - /go/pkg/mod
 
 jobs:
-  test-oldest:
-    # This tests our lowest supported versions of Go and LLVM, to make sure at
-    # least the smoke tests still pass.
+  test-llvm15-go119:
     docker:
-      - image: golang:1.22-bullseye
+      - image: golang:1.19-bullseye
     steps:
       - test-linux:
           llvm: "15"
+          # "make lint" fails before go 1.21 because internal/tools/go.mod specifies packages that require go 1.21
+          fmt-check: false
     resource_class: large
-  test-newest:
-    # This tests the latest supported LLVM version when linking against system
-    # libraries.
+  test-llvm19-go124:
     docker:
-      - image: golang:1.25-bullseye
+      - image: golang:1.24-bullseye
     steps:
       - test-linux:
-          llvm: "20"
+          llvm: "19"
     resource_class: large
 
 workflows:
   test-all:
     jobs:
-      - test-oldest
-      # disable this test, since CircleCI seems unable to download due to rate-limits on Dockerhub.
-      # - test-newest
+      # This tests our lowest supported versions of Go and LLVM, to make sure at
+      # least the smoke tests still pass.
+      - test-llvm15-go119
+      # This tests LLVM 19 support when linking against system libraries.
+      - test-llvm19-go124

.github/workflows/build-macos.yml

@@ -30,22 +30,22 @@ jobs:
         run: |
           HOMEBREW_NO_AUTO_UPDATE=1 brew install qemu binaryen
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v4
         with:
           submodules: true
       - name: Extract TinyGo version
         id: version
         run: ./.github/workflows/tinygo-extract-version.sh | tee -a "$GITHUB_OUTPUT"
       - name: Install Go
-        uses: actions/setup-go@v6
+        uses: actions/setup-go@v5
         with:
-          go-version: '1.25.1'
+          go-version: '1.24'
           cache: true
       - name: Restore LLVM source cache
         uses: actions/cache/restore@v4
         id: cache-llvm-source
         with:
-          key: llvm-source-20-${{ matrix.os }}-v1
+          key: llvm-source-19-${{ matrix.os }}-v1
           path: |
             llvm-project/clang/lib/Headers
             llvm-project/clang/include
@@ -70,7 +70,7 @@ jobs:
         uses: actions/cache/restore@v4
         id: cache-llvm-build
         with:
-          key: llvm-build-20-${{ matrix.os }}-v2
+          key: llvm-build-19-${{ matrix.os }}-v1
           path: llvm-build
       - name: Build LLVM
         if: steps.cache-llvm-build.outputs.cache-hit != 'true'
@@ -79,7 +79,7 @@ jobs:
           rm -rf llvm-project
           make llvm-source
           # install dependencies
-          HOMEBREW_NO_AUTO_UPDATE=1 brew install ninja
+          HOMEBREW_NO_AUTO_UPDATE=1 brew install cmake ninja
           # build!
           make llvm-build
           find llvm-build -name CMakeFiles -prune -exec rm -r '{}' \;
@@ -92,7 +92,7 @@ jobs:
       - name: make gen-device
         run: make -j3 gen-device
       - name: Test TinyGo
-        run: make test GOTESTFLAGS="-only-current-os"
+        run: make test GOTESTFLAGS="-short"
       - name: Build TinyGo release tarball
         run: make release -j3
       - name: Test stdlib packages
@@ -117,7 +117,7 @@ jobs:
     runs-on: macos-latest
     strategy:
       matrix:
-        version: [16, 17, 18, 19, 20]
+        version: [16, 17, 18, 19]
     steps:
       - name: Set up Homebrew
         uses: Homebrew/actions/setup-homebrew@master
@@ -130,19 +130,19 @@ jobs:
         run: |
           brew install llvm@${{ matrix.version }}
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v4
       - name: Install Go
-        uses: actions/setup-go@v6
+        uses: actions/setup-go@v5
         with:
-          go-version: '1.25.1'
+          go-version: '1.24'
           cache: true
       - name: Build TinyGo (LLVM ${{ matrix.version }})
         run: go install -tags=llvm${{ matrix.version }}
       - name: Check binary
         run: tinygo version
       - name: Build TinyGo (default LLVM)
-        if: matrix.version == 20
+        if: matrix.version == 19
         run: go install
       - name: Check binary
-        if: matrix.version == 20
+        if: matrix.version == 19
         run: tinygo version

.github/workflows/linux.yml

@@ -18,7 +18,7 @@ jobs:
     # statically linked binary.
     runs-on: ubuntu-latest
     container:
-      image: golang:1.25-alpine
+      image: golang:1.24-alpine
     outputs:
       version: ${{ steps.version.outputs.version }}
     steps:
@@ -26,7 +26,7 @@ jobs:
         # tar: needed for actions/cache@v4
         # git+openssh: needed for checkout (I think?)
         # ruby: needed to install fpm
-        run: apk add tar git openssh make g++ ruby-dev mold
+        run: apk add tar git openssh make g++ ruby-dev
       - name: Work around CVE-2022-24765
         # We're not on a multi-user machine, so this is safe.
         run: git config --global --add safe.directory "$GITHUB_WORKSPACE"
@@ -48,7 +48,7 @@ jobs:
         uses: actions/cache/restore@v4
         id: cache-llvm-source
         with:
-          key: llvm-source-20-linux-alpine-v1
+          key: llvm-source-19-linux-alpine-v1
           path: |
             llvm-project/clang/lib/Headers
             llvm-project/clang/include
@@ -73,7 +73,7 @@ jobs:
         uses: actions/cache/restore@v4
         id: cache-llvm-build
         with:
-          key: llvm-build-20-linux-alpine-v1
+          key: llvm-build-19-linux-alpine-v1
           path: llvm-build
       - name: Build LLVM
         if: steps.cache-llvm-build.outputs.cache-hit != 'true'
@@ -137,7 +137,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.25.0'
+          go-version: '1.24'
           cache: true
       - name: Install wasmtime
         uses: bytecodealliance/actions/wasmtime/setup@v1
@@ -181,7 +181,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.25.0'
+          go-version: '1.24'
           cache: true
       - name: Install Node.js
         uses: actions/setup-node@v4
@@ -197,7 +197,7 @@ jobs:
         uses: actions/cache/restore@v4
         id: cache-llvm-source
         with:
-          key: llvm-source-20-linux-asserts-v1
+          key: llvm-source-19-linux-asserts-v1
           path: |
             llvm-project/clang/lib/Headers
             llvm-project/clang/include
@@ -222,7 +222,7 @@ jobs:
         uses: actions/cache/restore@v4
         id: cache-llvm-build
         with:
-          key: llvm-build-20-linux-asserts-v1
+          key: llvm-build-19-linux-asserts-v1
           path: llvm-build
       - name: Build LLVM
         if: steps.cache-llvm-build.outputs.cache-hit != 'true'
@@ -298,13 +298,13 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.25.0'
+          go-version: '1.24'
           cache: true
       - name: Restore LLVM source cache
         uses: actions/cache/restore@v4
         id: cache-llvm-source
         with:
-          key: llvm-source-20-linux-v1
+          key: llvm-source-19-linux-v1
           path: |
             llvm-project/clang/lib/Headers
             llvm-project/clang/include
@@ -329,7 +329,7 @@ jobs:
         uses: actions/cache/restore@v4
         id: cache-llvm-build
         with:
-          key: llvm-build-20-linux-${{ matrix.goarch }}-v1
+          key: llvm-build-19-linux-${{ matrix.goarch }}-v3
           path: llvm-build
       - name: Build LLVM
         if: steps.cache-llvm-build.outputs.cache-hit != 'true'

.github/workflows/llvm.yml

@@ -35,8 +35,8 @@ jobs:
         uses: docker/metadata-action@v5
         with:
           images: |
-            tinygo/llvm-20
-            ghcr.io/${{ github.repository_owner }}/llvm-20
+            tinygo/llvm-19
+            ghcr.io/${{ github.repository_owner }}/llvm-19
           tags: |
             type=sha,format=long
             type=raw,value=latest

.github/workflows/nix.yml

@@ -29,7 +29,7 @@ jobs:
         uses: actions/cache/restore@v4
         id: cache-llvm-source
         with:
-          key: llvm-source-20-linux-nix-v1
+          key: llvm-source-19-linux-nix-v1
           path: |
             llvm-project/compiler-rt
       - name: Download LLVM source

.github/workflows/sizediff-install-pkgs.sh

@@ -2,11 +2,11 @@
 # still works after checking out the dev branch (that is, when going from LLVM
 # 16 to LLVM 17 for example, both Clang 16 and Clang 17 are installed).
 
-echo 'deb https://apt.llvm.org/noble/ llvm-toolchain-noble-20 main' | sudo tee /etc/apt/sources.list.d/llvm.list
+echo 'deb https://apt.llvm.org/noble/ llvm-toolchain-noble-19 main' | sudo tee /etc/apt/sources.list.d/llvm.list
 wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
 sudo apt-get update
 sudo apt-get install --no-install-recommends -y \
-    llvm-20-dev \
-    clang-20 \
-    libclang-20-dev \
-    lld-20
+    llvm-19-dev \
+    clang-19 \
+    libclang-19-dev \
+    lld-19

.github/workflows/sizediff.yml

@@ -30,7 +30,7 @@ jobs:
         uses: actions/cache@v4
         id: cache-llvm-source
         with:
-          key: llvm-source-20-sizediff-v1
+          key: llvm-source-19-sizediff-v1
           path: |
             llvm-project/compiler-rt
       - name: Download LLVM source

.github/workflows/windows.yml

@@ -23,7 +23,7 @@ jobs:
           minimum-size: 8GB
           maximum-size: 24GB
           disk-root: "C:"
-      - uses: MinoruSekine/setup-scoop@v4
+      - uses: brechtm/setup-scoop@v2
         with:
           scoop_update: 'false'
       - name: Install Dependencies
@@ -41,13 +41,13 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.25.0'
+          go-version: '1.24'
           cache: true
       - name: Restore cached LLVM source
         uses: actions/cache/restore@v4
         id: cache-llvm-source
         with:
-          key: llvm-source-20-windows-v1
+          key: llvm-source-19-windows-v1
           path: |
             llvm-project/clang/lib/Headers
             llvm-project/clang/include
@@ -72,7 +72,7 @@ jobs:
         uses: actions/cache/restore@v4
         id: cache-llvm-build
         with:
-          key: llvm-build-20-windows-v2
+          key: llvm-build-19-windows-v1
           path: llvm-build
       - name: Build LLVM
         if: steps.cache-llvm-build.outputs.cache-hit != 'true'
@@ -105,7 +105,7 @@ jobs:
         run: make -j3 gen-device
       - name: Test TinyGo
         shell: bash
-        run: make test GOTESTFLAGS="-only-current-os"
+        run: make test GOTESTFLAGS="-short"
       - name: Build TinyGo release tarball
         shell: bash
         run: make build/release -j4
@@ -135,7 +135,7 @@ jobs:
           minimum-size: 8GB
           maximum-size: 24GB
           disk-root: "C:"
-      - uses: MinoruSekine/setup-scoop@v4
+      - uses: brechtm/setup-scoop@v2
         with:
           scoop_update: 'false'
       - name: Install Dependencies
@@ -147,7 +147,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.25.0'
+          go-version: '1.24'
           cache: true
       - name: Download TinyGo build
         uses: actions/download-artifact@v4
@@ -177,7 +177,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.25.0'
+          go-version: '1.24'
           cache: true
       - name: Download TinyGo build
         uses: actions/download-artifact@v4
@@ -201,7 +201,7 @@ jobs:
           minimum-size: 8GB
           maximum-size: 24GB
           disk-root: "C:"
-      - uses: MinoruSekine/setup-scoop@v4
+      - uses: brechtm/setup-scoop@v2
         with:
           scoop_update: 'false'
       - name: Install Dependencies
@@ -213,7 +213,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.25.0'
+          go-version: '1.24'
           cache: true
       - name: Download TinyGo build
         uses: actions/download-artifact@v4

.gitmodules

@@ -22,7 +22,7 @@
 	url = https://github.com/tinygo-org/stm32-svd
 [submodule "lib/musl"]
 	path = lib/musl
-	url = https://github.com/tinygo-org/musl-libc.git
+	url = git://git.musl-libc.org/musl
 [submodule "lib/binaryen"]
 	path = lib/binaryen
 	url = https://github.com/WebAssembly/binaryen.git
@@ -35,6 +35,7 @@
 [submodule "src/net"]
 	path = src/net
 	url = https://github.com/tinygo-org/net.git
+	branch = dev
 [submodule "lib/wasi-cli"]
 	path = lib/wasi-cli
 	url = https://github.com/WebAssembly/wasi-cli

BUILDING.md

@@ -85,17 +85,11 @@ Try running TinyGo:
 
     ./build/tinygo help
 
-Also, make sure the `tinygo` binary really is statically linked. The command to check for 
-dynamic dependencies differs depending on your operating system.
-
-On Linux, use `ldd` (not to be confused with `lld`):
+Also, make sure the `tinygo` binary really is statically linked. Check this
+using `ldd` (not to be confused with `lld`):
 
     ldd ./build/tinygo
 
-On macOS, use otool -L:
-
-    otool -L ./build/tinygo
-
 The result should not contain libclang or libLLVM.
 
 ## Make a release tarball

CHANGELOG.md

@@ -1,153 +1,3 @@
-0.39.0
----
-* **general**
-  - all: add Go 1.25 support
-  - net: update to latest tinygo net package
-  - docs: clarify build verification step for macOS users
-  - Add flag to skip Renesas SVD builds
-* **build**
-  - Makefile: install missing dlmalloc files
-  - flash: add -o flag support to save built binary (Fixes #4937) (#4942)
-  - fix: update version of clang to 17 to accommodate latest Go 1.25 docker base image
-* **ci**
-  - chore: update all CI builds to test Go 1.25 release
-  - fix: disable test-newest since CircleCI seems unable to download due to rate-limits on Dockerhub
-  - ci: rename some jobs to avoid churn on every Go/LLVM version bump
-  - ci: make the goroutines test less racy
-  - tests: de-flake goroutines test
-* **compiler**
-  - compiler: implement internal/abi.Escape
-* **main**
-  - main: show the compiler error (if any) for `tinygo test -c`
-  - chore: correct GOOS=js name in error messages for WASM
-* **machine**
-  - machine: add international keys
-  - machine: remove some unnecessary "// peripherals:" comments
-  - machine: add I2C pin comments
-  - machine: standardize I2C errors with "i2c:" prefix
-  - machine: make I2C usable in the simulator
-  - fix: add SPI and I2C to teensy 4.1 (#4943)
-  - `rp2`: use the correct channel mask for rp2350 ADC; hold lock during read (#4938)
-  - `rp2`: disable digital input for analog inputs
-* **runtime**
-  - runtime: ensure time.Sleep(d) sleeps at least d
-  - runtime: stub out weak pointer support
-  - runtime: implement dummy AddCleanup
-  - runtime: enable multi-core scheduler for rp2350
-  - `internal/task`: use -stack-size flag when starting a new thread
-  - `internal/task`: add SA_RESTART flag to GC interrupts
-  - `internal/task`: a few small correctness fixes
-  - `internal/gclayout`: make gclayout values constants
-  - darwin: add threading support and use it by default
-* **standard library**
-  - `sync`: implement sync.Swap
-  - `reflect`: implement Method.IsExported
-* **testing**
-  - testing: stub out testing.B.Loop
-* **targets**
-  - `stm32`: add support for the STM32L031G6U6
-  - add metro-rp2350 board definition (#4989)
-  - `rp2040/rp2350`: set the default stack size to 8k for rp2040/rp2350 based boards where this was not already the case
-
-
-0.38.0
----
-* **general**
-  - `go.*`: upgrade `golang.org/x/tools` to v0.30.0
-  - `all`: add support for LLVM 20
-* **build**
-  - go back to using MinoruSekine/setup-scoop for Windows CI builds
-  - `flake.*`: upgrade to nixpkgs 25.05, LLVM 20
-  - `Makefile`: only detect ccache command when needed
-  - `Makefile`: create random filename inside rule
-  - `Makefile`: don't set GOROOT
-  - `Makefile`: call uname at most once
-  - `Makefile`: only read NodeJS version when it is needed
-* **compiler**
-  - add support for `GODEBUG=gotypesalias=1`
-  - `interp`: fix `copy()` from/to external buffers
-  - add `-nobounds` (similar to `-gcflags=-B`)
-  - `compileopts`: add library version to cached library path
-  - `builder`: build wasi-libc inside TinyGo
-  - `builder`: simplify bdwgc libc dependency
-  - `builder`: don't use precompiled libraries
-  - `compileopts`: enable support for `GOARCH=wasm` in `tinygo test`
-* **fixes**
-  - `rp2350`: Fix DMA to SPI transmits on RP2350 (#4903)
-  - `microbit v2`: use OpenOCD flash method on microbit v2 when using Nordic Semi SoftDevice
-  - `main`: display all of the current GC options for the `-gc` flag
-  - Remove duplicated error handling
-  - `sync`: fix `TestMutexConcurrent` test
-  - fix race condition in `testdata/goroutines.go`
-  - fix build warnings on Windows ARM
-* **machine**
-  - `usb`: add USB mass storage class support
-  - implement usb receive message throttling
-  - declare usb endpoints per-platform
-  - `samd21`: implement watchdog
-  - `samd51`: write to flash memory in 512 byte long chunks
-  - `samd21`: write to flash memory in 64 byte long chunks
-  - don't inline RTT `WriteByte` everywhere
-  - `rp2`: unexport machine-specific errors
-  - `rp2`: discount scheduling delays in I2C timeouts (#4876)
-  - use pointer receiver in simulated PWM peripherals
-  - add simulated PWM/timer peripherals
-  - `rp2`: expose usb endpoint stall handling
-  - `arm`: clear pending interrupts before enabling them
-  - `rp2`: merge common usb code (#4856)
-* **main**
-  - add "cores" and "threads" schedulers to help text
-  - add `StartPos` and `EndPos` to `-json` build output
-  - change `-json` flag to match upstream Go
-* **runtime**
-  - don't lock the print output inside interrupts
-  - don't try to interrupt other cores before they are started
-  - implement `NumCPU` for the multicore scheduler
-  - add support for multicore scheduler
-  - refactor obtaining the system stack
-  - `interrupt`: add `Checkpoint` type
-  - add `exportedFuncPtr`
-  - avoid an allocation in `(*time.Timer).Reset`
-  - stub runtime signal functions for `os/signal` on wasip1
-  - move `timeUnit` to a single place
-  - implement `NumCPU` for `-scheduler=threads`
-  - move `mainExited` boolean
-  - `internal/task`: rename `tinygo_pause` to `tinygo_task_exit`
-  - map every goroutine to a new OS thread
-  - refactor `timerQueue`
-  - make conservative and precise GC MT-safe
-  - `internal/task`: implement atomic primitives for preemptive scheduling
-  - Use diskutil on macOS to extract volume name and path for FAT mounts #4928
-* **standard library**
-  - `net`: update submodule to latest commits
-  - `runtime/debug`: add GC related stubs
-  - `metrics`: flesh out some of the metric types
-  - `reflect`: Chan related stubs
-  - `os`: handle relative and abs paths in `Executable()`
-  - `os`: add `os.Executable()` for Darwin
-  - `sync`: implement `RWMutex` using futexes
-  - `reflect`: Add `SliceOf`, `ArrayOf`, `StructOf`, `MapOf`, `FuncOf`
-* **targets**
-  - `rp2040`: add multicore support
-  - `riscv32`: use `gdb` binary as a fallback
-  - add target for Microbit v2 with SoftDevice S140 support for both peripheral and central
-  - `windows`: use MSVCRT.DLL instead of UCRT on i386
-  - `windows`: add windows/386 support
-  - `arm64`: remove unnecessary `.section` directive
-  - `riscv-qemu`: actually sleep in `time.Sleep()`
-  - `riscv`: define CSR constants and use them where possible
-  - `darwin`: support Boehm GC (and use by default)
-  - `windows`: add support for the Boehm-Demers-Weiser GC
-  - `windows`: fix wrong register for first parameter
-* **wasm**
-  - add Boehm GC support
-  - refactor/modify stub signal handling
-  - don't block `//go:wasmexport` because of running goroutines
-  - use `int64` instead of `float64` for the `timeUnit`
-* **boards**
-  - Add board support for BigTreeTech SKR Pico (#4842)
-
-
 0.37.0
 ---
 * **general**

Dockerfile

@@ -1,8 +1,8 @@
 # tinygo-llvm stage obtains the llvm source for TinyGo
-FROM golang:1.25 AS tinygo-llvm
+FROM golang:1.24 AS tinygo-llvm
 
 RUN apt-get update && \
-    apt-get install -y apt-utils make cmake clang-17 ninja-build && \
+    apt-get install -y apt-utils make cmake clang-15 ninja-build && \
     rm -rf \
         /var/lib/apt/lists/* \
         /var/log/* \
@@ -33,7 +33,7 @@ RUN cd /tinygo/ && \
 
 # tinygo-compiler copies the compiler build over to a base Go container (without
 # all the build tools etc).
-FROM golang:1.25 AS tinygo-compiler
+FROM golang:1.24 AS tinygo-compiler
 
 # Copy tinygo build.
 COPY --from=tinygo-compiler-build /tinygo/build/release/tinygo /tinygo

GNUmakefile

@@ -79,26 +79,6 @@ ifeq (1, $(STATIC))
     BINARYEN_OPTION += -DCMAKE_CXX_FLAGS="-static" -DCMAKE_C_FLAGS="-static"
 endif
 
-# Optimize the binary size for Linux.
-# These flags may work on other platforms, but have only been tested on Linux.
-ifeq ($(uname),Linux)
-    HAS_MOLD := $(shell command -v ld.mold 2> /dev/null)
-    HAS_LLD := $(shell command -v ld.lld 2> /dev/null)
-    LLVM_CFLAGS := -ffunction-sections -fdata-sections -fvisibility=hidden
-    LLVM_LDFLAGS := -Wl,--gc-sections
-    ifneq ($(HAS_MOLD),)
-        # Mold might be slightly faster.
-        LLVM_LDFLAGS += -fuse-ld=mold -Wl,--icf=all
-    else ifneq ($(HAS_LLD),)
-        # LLD is more commonly available.
-        LLVM_LDFLAGS += -fuse-ld=lld -Wl,--icf=all
-    endif
-    LLVM_OPTION += \
-        -DCMAKE_C_FLAGS="$(LLVM_CFLAGS)" \
-        -DCMAKE_CXX_FLAGS="$(LLVM_CFLAGS)"
-    CGO_LDFLAGS += $(LLVM_LDFLAGS)
-endif
-
 # Cross compiling support.
 ifneq ($(CROSS),)
     CC = $(CROSS)-gcc
@@ -207,10 +187,7 @@ fmt-check: ## Warn if any source needs reformatting
 	@unformatted=$$(gofmt -l $(FMT_PATHS)); [ -z "$$unformatted" ] && exit 0; echo "Unformatted:"; for fn in $$unformatted; do echo "  $$fn"; done; exit 1
 
 
-gen-device: gen-device-avr gen-device-esp gen-device-nrf gen-device-sam gen-device-sifive gen-device-kendryte gen-device-nxp gen-device-rp ## Generate microcontroller-specific sources
-ifneq ($(RENESAS), 0)
-gen-device: gen-device-renesas
-endif
+gen-device: gen-device-avr gen-device-esp gen-device-nrf gen-device-sam gen-device-sifive gen-device-kendryte gen-device-nxp gen-device-rp gen-device-renesas ## Generate microcontroller-specific sources
 ifneq ($(STM32), 0)
 gen-device: gen-device-stm32
 endif
@@ -263,7 +240,7 @@ gen-device-renesas: build/gen-device-svd
 	GO111MODULE=off $(GO) fmt ./src/device/renesas
 
 $(LLVM_PROJECTDIR)/llvm:
-	git clone -b tinygo_20.x --depth=1 https://github.com/tinygo-org/llvm-project $(LLVM_PROJECTDIR)
+	git clone -b xtensa_release_19.1.2 --depth=1 https://github.com/espressif/llvm-project $(LLVM_PROJECTDIR)
 llvm-source: $(LLVM_PROJECTDIR)/llvm ## Get LLVM sources
 
 # Configure LLVM.
@@ -363,6 +340,7 @@ TEST_PACKAGES_FAST = \
 	path \
 	reflect \
 	sync \
+	testing \
 	testing/iotest \
 	text/scanner \
 	unicode \
@@ -479,15 +457,11 @@ TEST_PACKAGES_HOST := $(TEST_PACKAGES_FAST) $(TEST_PACKAGES_WINDOWS)
 TEST_IOFS := false
 endif
 
-TEST_SKIP_FLAG := -skip='TestExtraMethods|TestParseAndBytesRoundTrip/P256/Generic|^Fuzz'
-
 # Test known-working standard library packages.
 # TODO: parallelize, and only show failing tests (no implied -v flag).
 .PHONY: tinygo-test
 tinygo-test:
-	@# TestExtraMethods: used by many crypto packages and uses reflect.Type.Method which is not implemented.
-	@# TestParseAndBytesRoundTrip/P256/Generic: relies on t.Skip() which is not implemented
-	$(TINYGO) test $(TEST_SKIP_FLAG) $(TEST_PACKAGES_HOST) $(TEST_PACKAGES_SLOW)
+	$(TINYGO) test $(TEST_PACKAGES_HOST) $(TEST_PACKAGES_SLOW)
 	@# io/fs requires os.ReadDir, not yet supported on windows or wasi. It also
 	@# requires a large stack-size. Hence, io/fs is only run conditionally.
 	@# For more details, see the comments on issue #3143.
@@ -495,7 +469,7 @@ ifeq ($(TEST_IOFS),true)
 	$(TINYGO) test -stack-size=6MB io/fs
 endif
 tinygo-test-fast:
-	$(TINYGO) test $(TEST_SKIP_FLAG) $(TEST_PACKAGES_HOST)
+	$(TINYGO) test $(TEST_PACKAGES_HOST)
 tinygo-bench:
 	$(TINYGO) test -bench . $(TEST_PACKAGES_HOST) $(TEST_PACKAGES_SLOW)
 tinygo-bench-fast:
@@ -503,18 +477,18 @@ tinygo-bench-fast:
 
 # Same thing, except for wasi rather than the current platform.
 tinygo-test-wasm:
-	$(TINYGO) test -target wasm $(TEST_SKIP_FLAG) $(TEST_PACKAGES_WASM)
+	$(TINYGO) test -target wasm $(TEST_PACKAGES_WASM)
 tinygo-test-wasi:
-	$(TINYGO) test -target wasip1 $(TEST_SKIP_FLAG) $(TEST_PACKAGES_FAST) $(TEST_PACKAGES_SLOW) ./tests/runtime_wasi
+	$(TINYGO) test -target wasip1 $(TEST_PACKAGES_FAST) $(TEST_PACKAGES_SLOW) ./tests/runtime_wasi
 tinygo-test-wasip1:
-	GOOS=wasip1 GOARCH=wasm $(TINYGO) test $(TEST_SKIP_FLAG) $(TEST_PACKAGES_FAST) $(TEST_PACKAGES_SLOW) ./tests/runtime_wasi
+	GOOS=wasip1 GOARCH=wasm $(TINYGO) test $(TEST_PACKAGES_FAST) $(TEST_PACKAGES_SLOW) ./tests/runtime_wasi
 tinygo-test-wasip1-fast:
-	$(TINYGO) test -target=wasip1 $(TEST_SKIP_FLAG) $(TEST_PACKAGES_FAST) ./tests/runtime_wasi
+	$(TINYGO) test -target=wasip1 $(TEST_PACKAGES_FAST) ./tests/runtime_wasi
 
 tinygo-test-wasip2-slow:
-	$(TINYGO) test -target=wasip2 $(TEST_SKIP_FLAG) $(TEST_PACKAGES_SLOW)
+	$(TINYGO) test -target=wasip2 $(TEST_PACKAGES_SLOW)
 tinygo-test-wasip2-fast:
-	$(TINYGO) test -target=wasip2 $(TEST_SKIP_FLAG) $(TEST_PACKAGES_FAST) ./tests/runtime_wasi
+	$(TINYGO) test -target=wasip2 $(TEST_PACKAGES_FAST) ./tests/runtime_wasi
 
 tinygo-test-wasip2-sum-slow:
 	TINYGO=$(TINYGO) \
@@ -540,7 +514,7 @@ tinygo-bench-wasip2-fast:
 
 # Run tests on riscv-qemu since that one provides a large amount of memory.
 tinygo-test-baremetal:
-	$(TINYGO) test -target riscv-qemu $(TEST_SKIP_FLAG) $(TEST_PACKAGES_BAREMETAL)
+	$(TINYGO) test -target riscv-qemu $(TEST_PACKAGES_BAREMETAL)
 
 # Test external packages in a large corpus.
 test-corpus:
@@ -652,12 +626,8 @@ endif
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=microbit-v2-s113v7  examples/microbit-blink
 	@$(MD5SUM) test.hex
-	$(TINYGO) build -size short -o test.hex -target=microbit-v2-s140v7  examples/microbit-blink
-	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=nrf52840-mdk        examples/blinky1
 	@$(MD5SUM) test.hex
-	$(TINYGO) build -size short -o test.hex -target=btt-skr-pico        examples/uart
-	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=pca10031            examples/blinky1
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=reelboard           examples/blinky1
@@ -794,8 +764,6 @@ endif
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=gopher-badge      examples/blinky1
 	@$(MD5SUM) test.hex
-	$(TINYGO) build -size short -o test.hex -target=gopher-arcade      examples/blinky1
-	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=ae-rp2040           examples/echo
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=thumby              examples/echo
@@ -806,8 +774,6 @@ endif
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=pico-plus2          examples/blinky1
 	@$(MD5SUM) test.hex
-	$(TINYGO) build -size short -o test.hex -target=metro-rp2350        examples/blinky1
-	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=waveshare-rp2040-tiny examples/echo
 	@$(MD5SUM) test.hex
 	# test pwm
@@ -824,10 +790,6 @@ endif
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=feather-nrf52840    examples/usb-midi
 	@$(MD5SUM) test.hex
-	$(TINYGO) build -size short -o test.hex -target=pico    			examples/usb-storage
-	@$(MD5SUM) test.hex
-	$(TINYGO) build -size short -o test.hex -target=pico2    			examples/usb-storage
-	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=nrf52840-s140v6-uf2-generic	examples/machinetest
 	@$(MD5SUM) test.hex
 ifneq ($(STM32), 0)
@@ -867,8 +829,6 @@ ifneq ($(STM32), 0)
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=mksnanov3           examples/blinky1
 	@$(MD5SUM) test.hex
-	$(TINYGO) build -size short -o test.hex -target=stm32l0x1           examples/serial
-	@$(MD5SUM) test.hex
 endif
 	$(TINYGO) build -size short -o test.hex -target=atmega328pb         examples/blinkm
 	@$(MD5SUM) test.hex
@@ -939,7 +899,7 @@ endif
 	$(TINYGO) build -size short -o test.hex -target=hw-651              examples/machinetest
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=hw-651-s110v8       examples/machinetest
-	@$(MD5SUM) test.hex
+	@$(MD5SUM) test.hex	
 ifneq ($(WASM), 0)
 	$(TINYGO) build -size short -o wasm.wasm -target=wasm               examples/wasm/export
 	$(TINYGO) build -size short -o wasm.wasm -target=wasm               examples/wasm/main
@@ -972,7 +932,7 @@ endif
 
 
 wasmtest:
-	cd ./tests/wasm && $(GO) test .
+	$(GO) test ./tests/wasm
 
 build/release: tinygo gen-device $(if $(filter 1,$(USE_SYSTEM_BINARYEN)),,binaryen)
 	@mkdir -p build/release/tinygo/bin
@@ -980,9 +940,8 @@ build/release: tinygo gen-device $(if $(filter 1,$(USE_SYSTEM_BINARYEN)),,binary
 	@mkdir -p build/release/tinygo/lib/clang/include
 	@mkdir -p build/release/tinygo/lib/CMSIS/CMSIS
 	@mkdir -p build/release/tinygo/lib/macos-minimal-sdk
-	@mkdir -p build/release/tinygo/lib/mingw-w64/mingw-w64-crt/crt
-	@mkdir -p build/release/tinygo/lib/mingw-w64/mingw-w64-crt/math
 	@mkdir -p build/release/tinygo/lib/mingw-w64/mingw-w64-crt/lib-common
+	@mkdir -p build/release/tinygo/lib/mingw-w64/mingw-w64-crt/stdio
 	@mkdir -p build/release/tinygo/lib/mingw-w64/mingw-w64-headers/defaults
 	@mkdir -p build/release/tinygo/lib/musl/arch
 	@mkdir -p build/release/tinygo/lib/musl/crt
@@ -990,7 +949,6 @@ build/release: tinygo gen-device $(if $(filter 1,$(USE_SYSTEM_BINARYEN)),,binary
 	@mkdir -p build/release/tinygo/lib/nrfx
 	@mkdir -p build/release/tinygo/lib/picolibc/newlib/libc
 	@mkdir -p build/release/tinygo/lib/picolibc/newlib/libm
-	@mkdir -p build/release/tinygo/lib/wasi-libc/dlmalloc
 	@mkdir -p build/release/tinygo/lib/wasi-libc/libc-bottom-half
 	@mkdir -p build/release/tinygo/lib/wasi-libc/libc-top-half/musl/arch
 	@mkdir -p build/release/tinygo/lib/wasi-libc/libc-top-half/musl/src
@@ -1039,17 +997,10 @@ endif
 	@cp -rp lib/musl/src/time            build/release/tinygo/lib/musl/src
 	@cp -rp lib/musl/src/unistd          build/release/tinygo/lib/musl/src
 	@cp -rp lib/musl/src/process         build/release/tinygo/lib/musl/src
-	@cp -rp lib/mingw-w64/mingw-w64-crt/crt/pseudo-reloc.c          build/release/tinygo/lib/mingw-w64/mingw-w64-crt/crt
 	@cp -rp lib/mingw-w64/mingw-w64-crt/def-include                 build/release/tinygo/lib/mingw-w64/mingw-w64-crt
-	@cp -rp lib/mingw-w64/mingw-w64-crt/gdtoa                       build/release/tinygo/lib/mingw-w64/mingw-w64-crt
-	@cp -rp lib/mingw-w64/mingw-w64-crt/include                     build/release/tinygo/lib/mingw-w64/mingw-w64-crt
 	@cp -rp lib/mingw-w64/mingw-w64-crt/lib-common/api-ms-win-crt-* build/release/tinygo/lib/mingw-w64/mingw-w64-crt/lib-common
-	@cp -rp lib/mingw-w64/mingw-w64-crt/lib-common/advapi32.def.in  build/release/tinygo/lib/mingw-w64/mingw-w64-crt/lib-common
 	@cp -rp lib/mingw-w64/mingw-w64-crt/lib-common/kernel32.def.in  build/release/tinygo/lib/mingw-w64/mingw-w64-crt/lib-common
-	@cp -rp lib/mingw-w64/mingw-w64-crt/lib-common/msvcrt.def.in    build/release/tinygo/lib/mingw-w64/mingw-w64-crt/lib-common
-	@cp -rp lib/mingw-w64/mingw-w64-crt/math/x86                    build/release/tinygo/lib/mingw-w64/mingw-w64-crt/math
-	@cp -rp lib/mingw-w64/mingw-w64-crt/misc                        build/release/tinygo/lib/mingw-w64/mingw-w64-crt
-	@cp -rp lib/mingw-w64/mingw-w64-crt/stdio                       build/release/tinygo/lib/mingw-w64/mingw-w64-crt
+	@cp -rp lib/mingw-w64/mingw-w64-crt/stdio/ucrt_*                build/release/tinygo/lib/mingw-w64/mingw-w64-crt/stdio
 	@cp -rp lib/mingw-w64/mingw-w64-headers/crt/                    build/release/tinygo/lib/mingw-w64/mingw-w64-headers
 	@cp -rp lib/mingw-w64/mingw-w64-headers/defaults/include        build/release/tinygo/lib/mingw-w64/mingw-w64-headers/defaults
 	@cp -rp lib/mingw-w64/mingw-w64-headers/include                 build/release/tinygo/lib/mingw-w64/mingw-w64-headers
@@ -1062,7 +1013,6 @@ endif
 	@cp -rp lib/picolibc/newlib/libm/common      build/release/tinygo/lib/picolibc/newlib/libm
 	@cp -rp lib/picolibc/newlib/libm/math        build/release/tinygo/lib/picolibc/newlib/libm
 	@cp -rp lib/picolibc-stdio.c         build/release/tinygo/lib
-	@cp -rp lib/wasi-libc/dlmalloc/src                              build/release/tinygo/lib/wasi-libc/dlmalloc
 	@cp -rp lib/wasi-libc/libc-bottom-half/cloudlibc                build/release/tinygo/lib/wasi-libc/libc-bottom-half
 	@cp -rp lib/wasi-libc/libc-bottom-half/headers                  build/release/tinygo/lib/wasi-libc/libc-bottom-half
 	@cp -rp lib/wasi-libc/libc-bottom-half/sources                  build/release/tinygo/lib/wasi-libc/libc-bottom-half
@@ -1119,7 +1069,6 @@ endif
 tools:
 	cd internal/tools && go generate -tags tools ./
 
-LINTDIRS=src/os/ src/reflect/
 .PHONY: lint
 lint: tools ## Lint source tree
 	revive -version
@@ -1127,10 +1076,7 @@ lint: tools ## Lint source tree
 	# revive.toml isn't flexible enough to filter out just one kind of error from a checker, so do it with grep here.
 	# Can't use grep with friendly formatter.  Plain output isn't too bad, though.
 	# Use 'grep .' to get rid of stray blank line
-	revive -config revive.toml compiler/... $$( find $(LINTDIRS) -type f -name '*.go' ) \
-		| grep -v "should have comment or be unexported" \
-		| grep '.' \
-		| awk '{print}; END {exit NR>0}'
+	revive -config revive.toml compiler/... src/{os,reflect}/*.go | grep -v "should have comment or be unexported" | grep '.' | awk '{print}; END {exit NR>0}'
 
 SPELLDIRSCMD=find . -depth 1 -type d  | egrep -wv '.git|lib|llvm|src'; find src -depth 1 | egrep -wv 'device|internal|net|vendor'; find src/internal -depth 1 -type d | egrep -wv src/internal/wasi
 .PHONY: spell

builder/bdwgc.go

@@ -14,7 +14,7 @@ var BoehmGC = Library{
 	name: "bdwgc",
 	cflags: func(target, headerPath string) []string {
 		libdir := filepath.Join(goenv.Get("TINYGOROOT"), "lib/bdwgc")
-		flags := []string{
+		return []string{
 			// use a modern environment
 			"-DUSE_MMAP",              // mmap is available
 			"-DUSE_MUNMAP",            // return memory to the OS using munmap
@@ -30,10 +30,6 @@ var BoehmGC = Library{
 			// Use a minimal environment.
 			"-DNO_MSGBOX_ON_ERROR", // don't call MessageBoxA on Windows
 			"-DDONT_USE_ATEXIT",
-			"-DNO_GETENV",          // smaller binary, more predictable configuration
-			"-DNO_CLOCK",           // don't use system clock
-			"-DNO_DEBUGGING",       // reduce code size
-			"-DGC_NO_FINALIZATION", // finalization is not used at the moment
 
 			// Special flag to work around the lack of __data_start in ld.lld.
 			// TODO: try to fix this in LLVM/lld directly so we don't have to
@@ -42,8 +38,6 @@ var BoehmGC = Library{
 
 			// Do not scan the stack. We have our own mechanism to do this.
 			"-DSTACK_NOT_SCANNED",
-			"-DNO_PROC_STAT",  // we scan the stack manually (don't read /proc/self/stat on Linux)
-			"-DSTACKBOTTOM=0", // dummy value, we scan the stack manually
 
 			// Assertions can be enabled while debugging GC issues.
 			//"-DGC_ASSERTIONS",
@@ -55,19 +49,19 @@ var BoehmGC = Library{
 
 			"-I" + libdir + "/include",
 		}
-		return flags
 	},
 	needsLibc: true,
 	sourceDir: func() string {
 		return filepath.Join(goenv.Get("TINYGOROOT"), "lib/bdwgc")
 	},
-	librarySources: func(target string, _ bool) ([]string, error) {
+	librarySources: func(target string) ([]string, error) {
 		sources := []string{
 			"allchblk.c",
 			"alloc.c",
 			"blacklst.c",
 			"dbg_mlc.c",
 			"dyn_load.c",
+			"finalize.c",
 			"headers.c",
 			"mach_dep.c",
 			"malloc.c",
@@ -75,6 +69,7 @@ var BoehmGC = Library{
 			"mark_rts.c",
 			"misc.c",
 			"new_hblk.c",
+			"obj_map.c",
 			"os_dep.c",
 			"reclaim.c",
 		}

builder/build.go

@@ -1046,7 +1046,7 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
 		// Special format for the ESP family of chips (parsed by the ROM
 		// bootloader).
 		result.Binary = filepath.Join(tmpdir, "main"+outext)
-		err := makeESPFirmwareImage(result.Executable, result.Binary, outputBinaryFormat)
+		err := makeESPFirmareImage(result.Executable, result.Binary, outputBinaryFormat)
 		if err != nil {
 			return result, err
 		}

builder/builder_test.go

@@ -67,7 +67,6 @@ func TestClangAttributes(t *testing.T) {
 		{GOOS: "linux", GOARCH: "mipsle", GOMIPS: "softfloat"},
 		{GOOS: "darwin", GOARCH: "amd64"},
 		{GOOS: "darwin", GOARCH: "arm64"},
-		{GOOS: "windows", GOARCH: "386"},
 		{GOOS: "windows", GOARCH: "amd64"},
 		{GOOS: "windows", GOARCH: "arm64"},
 	} {

builder/builtins.go

@@ -3,7 +3,6 @@ package builder
 import (
 	"os"
 	"path/filepath"
-	"strings"
 
 	"github.com/tinygo-org/tinygo/compileopts"
 	"github.com/tinygo-org/tinygo/goenv"
@@ -202,11 +201,6 @@ var avrBuiltins = []string{
 	"avr/udivmodqi4.S",
 }
 
-// Builtins needed specifically for windows/386.
-var windowsI386Builtins = []string{
-	"i386/chkstk.S", // also _alloca
-}
-
 // libCompilerRT is a library with symbols required by programs compiled with
 // LLVM. These symbols are for operations that cannot be emitted with a single
 // instruction or a short sequence of instructions for that target.
@@ -226,7 +220,7 @@ var libCompilerRT = Library{
 		// Development build.
 		return filepath.Join(goenv.Get("TINYGOROOT"), "lib/compiler-rt-builtins")
 	},
-	librarySources: func(target string, _ bool) ([]string, error) {
+	librarySources: func(target string) ([]string, error) {
 		builtins := append([]string{}, genericBuiltins...) // copy genericBuiltins
 		switch compileopts.CanonicalArchName(target) {
 		case "arm":
@@ -235,10 +229,6 @@ var libCompilerRT = Library{
 			builtins = append(builtins, avrBuiltins...)
 		case "x86_64", "aarch64", "riscv64": // any 64-bit arch
 			builtins = append(builtins, genericBuiltins128...)
-		case "i386":
-			if strings.Split(target, "-")[2] == "windows" {
-				builtins = append(builtins, windowsI386Builtins...)
-			}
 		}
 		return builtins, nil
 	},

builder/cc1as.cpp

@@ -144,6 +144,8 @@ bool AssemblerInvocation::CreateFromArgs(AssemblerInvocation &Opts,
             .Default(llvm::DebugCompressionType::None);
   }
 
+  Opts.RelaxELFRelocations = !Args.hasArg(OPT_mrelax_relocations_no);
+  Opts.SSE2AVX = Args.hasArg(OPT_msse2avx);
   if (auto *DwarfFormatArg = Args.getLastArg(OPT_gdwarf64, OPT_gdwarf32))
     Opts.Dwarf64 = DwarfFormatArg->getOption().matches(OPT_gdwarf64);
   Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 2, Diags);
@@ -234,9 +236,6 @@ bool AssemblerInvocation::CreateFromArgs(AssemblerInvocation &Opts,
   Opts.EmitCompactUnwindNonCanonical =
       Args.hasArg(OPT_femit_compact_unwind_non_canonical);
   Opts.Crel = Args.hasArg(OPT_crel);
-  Opts.ImplicitMapsyms = Args.hasArg(OPT_mmapsyms_implicit);
-  Opts.X86RelaxRelocations = !Args.hasArg(OPT_mrelax_relocations_no);
-  Opts.X86Sse2Avx = Args.hasArg(OPT_msse2avx);
 
   Opts.AsSecureLogFile = Args.getLastArgValue(OPT_as_secure_log_file);
 
@@ -295,9 +294,8 @@ static bool ExecuteAssemblerImpl(AssemblerInvocation &Opts,
   MCOptions.EmitCompactUnwindNonCanonical = Opts.EmitCompactUnwindNonCanonical;
   MCOptions.MCSaveTempLabels = Opts.SaveTemporaryLabels;
   MCOptions.Crel = Opts.Crel;
-  MCOptions.ImplicitMapSyms = Opts.ImplicitMapsyms;
-  MCOptions.X86RelaxRelocations = Opts.X86RelaxRelocations;
-  MCOptions.X86Sse2Avx = Opts.X86Sse2Avx;
+  MCOptions.X86RelaxRelocations = Opts.RelaxELFRelocations;
+  MCOptions.X86Sse2Avx = Opts.SSE2AVX;
   MCOptions.CompressDebugSections = Opts.CompressDebugSections;
   MCOptions.AsSecureLogFile = Opts.AsSecureLogFile;
 
@@ -345,6 +343,10 @@ static bool ExecuteAssemblerImpl(AssemblerInvocation &Opts,
   // MCObjectFileInfo needs a MCContext reference in order to initialize itself.
   std::unique_ptr<MCObjectFileInfo> MOFI(
       TheTarget->createMCObjectFileInfo(Ctx, PIC));
+  if (Opts.DarwinTargetVariantTriple)
+    MOFI->setDarwinTargetVariantTriple(*Opts.DarwinTargetVariantTriple);
+  if (!Opts.DarwinTargetVariantSDKVersion.empty())
+    MOFI->setDarwinTargetVariantSDKVersion(Opts.DarwinTargetVariantSDKVersion);
   Ctx.setObjectFileInfo(MOFI.get());
 
   if (Opts.GenDwarfForAssembly)
@@ -426,13 +428,6 @@ static bool ExecuteAssemblerImpl(AssemblerInvocation &Opts,
     Str.reset(TheTarget->createMCObjectStreamer(
         T, Ctx, std::move(MAB), std::move(OW), std::move(CE), *STI));
     Str.get()->initSections(Opts.NoExecStack, *STI);
-    if (T.isOSBinFormatMachO() && T.isOSDarwin()) {
-      Triple *TVT = Opts.DarwinTargetVariantTriple
-                        ? &*Opts.DarwinTargetVariantTriple
-                        : nullptr;
-      Str->emitVersionForTarget(T, VersionTuple(), TVT,
-                                Opts.DarwinTargetVariantSDKVersion);
-    }
   }
 
   // When -fembed-bitcode is passed to clang_as, a 1-byte marker

builder/cc1as.h

@@ -45,6 +45,10 @@ struct AssemblerInvocation {
   LLVM_PREFERRED_TYPE(bool)
   unsigned GenDwarfForAssembly : 1;
   LLVM_PREFERRED_TYPE(bool)
+  unsigned RelaxELFRelocations : 1;
+  LLVM_PREFERRED_TYPE(bool)
+  unsigned SSE2AVX : 1;
+  LLVM_PREFERRED_TYPE(bool)
   unsigned Dwarf64 : 1;
   unsigned DwarfVersion;
   std::string DwarfDebugFlags;
@@ -113,13 +117,6 @@ struct AssemblerInvocation {
 
   LLVM_PREFERRED_TYPE(bool)
   unsigned Crel : 1;
-  LLVM_PREFERRED_TYPE(bool)
-  unsigned ImplicitMapsyms : 1;
-
-  LLVM_PREFERRED_TYPE(bool)
-  unsigned X86RelaxRelocations : 1;
-  LLVM_PREFERRED_TYPE(bool)
-  unsigned X86Sse2Avx : 1;
 
   /// The name of the relocation model to use.
   std::string RelocationModel;
@@ -151,6 +148,7 @@ public:
     ShowInst = 0;
     ShowEncoding = 0;
     RelaxAll = 0;
+    SSE2AVX = 0;
     NoExecStack = 0;
     FatalWarnings = 0;
     NoWarn = 0;
@@ -162,9 +160,6 @@ public:
     EmitDwarfUnwind = EmitDwarfUnwindType::Default;
     EmitCompactUnwindNonCanonical = false;
     Crel = false;
-    ImplicitMapsyms = 0;
-    X86RelaxRelocations = 0;
-    X86Sse2Avx = 0;
   }
 
   static bool CreateFromArgs(AssemblerInvocation &Res,

builder/clang.cpp

@@ -60,7 +60,7 @@ bool tinygo_clang_driver(int argc, char **argv) {
 			}
 
 			// Create the actual diagnostics engine.
-			Clang->createDiagnostics(*llvm::vfs::getRealFileSystem());
+			Clang->createDiagnostics();
 			if (!Clang->hasDiagnostics()) {
 				return false;
 			}

builder/config.go

@@ -26,7 +26,7 @@ func NewConfig(options *compileopts.Options) (*compileopts.Config, error) {
 
 	// Version range supported by TinyGo.
 	const minorMin = 19
-	const minorMax = 25
+	const minorMax = 24
 
 	// Check that we support this Go toolchain version.
 	gorootMajor, gorootMinor, err := goenv.GetGorootVersion()

builder/esp.go

@@ -23,7 +23,7 @@ type espImageSegment struct {
 	data []byte
 }
 
-// makeESPFirmwareImage converts an input ELF file to an image file for an ESP32 or
+// makeESPFirmareImage converts an input ELF file to an image file for an ESP32 or
 // ESP8266 chip. This is a special purpose image format just for the ESP chip
 // family, and is parsed by the on-chip mask ROM bootloader.
 //
@@ -31,7 +31,7 @@ type espImageSegment struct {
 // https://github.com/espressif/esptool/wiki/Firmware-Image-Format
 // https://github.com/espressif/esp-idf/blob/8fbb63c2a701c22ccf4ce249f43aded73e134a34/components/bootloader_support/include/esp_image_format.h#L58
 // https://github.com/espressif/esptool/blob/master/esptool.py
-func makeESPFirmwareImage(infile, outfile, format string) error {
+func makeESPFirmareImage(infile, outfile, format string) error {
 	inf, err := elf.Open(infile)
 	if err != nil {
 		return err

builder/library.go

@@ -38,7 +38,7 @@ type Library struct {
 	sourceDir func() string
 
 	// The source files, relative to sourceDir.
-	librarySources func(target string, libcNeedsMalloc bool) ([]string, error)
+	librarySources func(target string) ([]string, error)
 
 	// The source code for the crt1.o file, relative to sourceDir.
 	crt1Source string
@@ -226,7 +226,7 @@ func (l *Library) load(config *compileopts.Config, tmpdir string) (job *compileJ
 
 	// Create jobs to compile all sources. These jobs are depended upon by the
 	// archive job above, so must be run first.
-	paths, err := l.librarySources(target, config.LibcNeedsMalloc())
+	paths, err := l.librarySources(target)
 	if err != nil {
 		return nil, nil, err
 	}

builder/mingw-w64.go

@@ -30,62 +30,25 @@ var libMinGW = Library{
 	sourceDir: func() string { return filepath.Join(goenv.Get("TINYGOROOT"), "lib/mingw-w64") },
 	cflags: func(target, headerPath string) []string {
 		mingwDir := filepath.Join(goenv.Get("TINYGOROOT"), "lib/mingw-w64")
-		flags := []string{
+		return []string{
 			"-nostdlibinc",
-			"-isystem", mingwDir + "/mingw-w64-crt/include",
 			"-isystem", mingwDir + "/mingw-w64-headers/crt",
-			"-isystem", mingwDir + "/mingw-w64-headers/include",
 			"-I", mingwDir + "/mingw-w64-headers/defaults/include",
 			"-I" + headerPath,
 		}
-		if strings.Split(target, "-")[0] == "i386" {
-			flags = append(flags,
-				"-D__MSVCRT_VERSION__=0x700", // Microsoft Visual C++ .NET 2002
-				"-D_WIN32_WINNT=0x0501",      // target Windows XP
-				"-D_CRTBLD",
-				"-Wno-pragma-pack",
-			)
-		}
-		return flags
 	},
-	librarySources: func(target string, _ bool) ([]string, error) {
+	librarySources: func(target string) ([]string, error) {
 		// These files are needed so that printf and the like are supported.
-		var sources []string
-		if strings.Split(target, "-")[0] == "i386" {
-			// Old 32-bit x86 systems use msvcrt.dll.
-			sources = []string{
-				"mingw-w64-crt/crt/pseudo-reloc.c",
-				"mingw-w64-crt/gdtoa/dmisc.c",
-				"mingw-w64-crt/gdtoa/gdtoa.c",
-				"mingw-w64-crt/gdtoa/gmisc.c",
-				"mingw-w64-crt/gdtoa/misc.c",
-				"mingw-w64-crt/math/x86/exp2.S",
-				"mingw-w64-crt/math/x86/trunc.S",
-				"mingw-w64-crt/misc/___mb_cur_max_func.c",
-				"mingw-w64-crt/misc/lc_locale_func.c",
-				"mingw-w64-crt/misc/mbrtowc.c",
-				"mingw-w64-crt/misc/strnlen.c",
-				"mingw-w64-crt/misc/wcrtomb.c",
-				"mingw-w64-crt/misc/wcsnlen.c",
-				"mingw-w64-crt/stdio/acrt_iob_func.c",
-				"mingw-w64-crt/stdio/mingw_lock.c",
-				"mingw-w64-crt/stdio/mingw_pformat.c",
-				"mingw-w64-crt/stdio/mingw_vfprintf.c",
-				"mingw-w64-crt/stdio/mingw_vsnprintf.c",
-			}
-		} else {
-			// Anything somewhat modern (amd64, arm64) uses UCRT.
-			sources = []string{
-				"mingw-w64-crt/stdio/ucrt_fprintf.c",
-				"mingw-w64-crt/stdio/ucrt_fwprintf.c",
-				"mingw-w64-crt/stdio/ucrt_printf.c",
-				"mingw-w64-crt/stdio/ucrt_snprintf.c",
-				"mingw-w64-crt/stdio/ucrt_sprintf.c",
-				"mingw-w64-crt/stdio/ucrt_vfprintf.c",
-				"mingw-w64-crt/stdio/ucrt_vprintf.c",
-				"mingw-w64-crt/stdio/ucrt_vsnprintf.c",
-				"mingw-w64-crt/stdio/ucrt_vsprintf.c",
-			}
+		sources := []string{
+			"mingw-w64-crt/stdio/ucrt_fprintf.c",
+			"mingw-w64-crt/stdio/ucrt_fwprintf.c",
+			"mingw-w64-crt/stdio/ucrt_printf.c",
+			"mingw-w64-crt/stdio/ucrt_snprintf.c",
+			"mingw-w64-crt/stdio/ucrt_sprintf.c",
+			"mingw-w64-crt/stdio/ucrt_vfprintf.c",
+			"mingw-w64-crt/stdio/ucrt_vprintf.c",
+			"mingw-w64-crt/stdio/ucrt_vsnprintf.c",
+			"mingw-w64-crt/stdio/ucrt_vsprintf.c",
 		}
 		return sources, nil
 	},
@@ -100,41 +63,27 @@ var libMinGW = Library{
 func makeMinGWExtraLibs(tmpdir, goarch string) []*compileJob {
 	var jobs []*compileJob
 	root := goenv.Get("TINYGOROOT")
-	var libs []string
-	if goarch == "386" {
-		libs = []string{
-			// x86 uses msvcrt.dll instead of UCRT for compatibility with old
-			// Windows versions.
-			"advapi32.def.in",
-			"kernel32.def.in",
-			"msvcrt.def.in",
-		}
-	} else {
-		// Use the modernized UCRT on new systems.
-		// Normally all the api-ms-win-crt-*.def files are all compiled to a
-		// single .lib file. But to simplify things, we're going to leave them
-		// as separate files.
-		libs = []string{
-			"advapi32.def.in",
-			"kernel32.def.in",
-			"api-ms-win-crt-conio-l1-1-0.def",
-			"api-ms-win-crt-convert-l1-1-0.def.in",
-			"api-ms-win-crt-environment-l1-1-0.def",
-			"api-ms-win-crt-filesystem-l1-1-0.def",
-			"api-ms-win-crt-heap-l1-1-0.def",
-			"api-ms-win-crt-locale-l1-1-0.def",
-			"api-ms-win-crt-math-l1-1-0.def.in",
-			"api-ms-win-crt-multibyte-l1-1-0.def",
-			"api-ms-win-crt-private-l1-1-0.def.in",
-			"api-ms-win-crt-process-l1-1-0.def",
-			"api-ms-win-crt-runtime-l1-1-0.def.in",
-			"api-ms-win-crt-stdio-l1-1-0.def",
-			"api-ms-win-crt-string-l1-1-0.def",
-			"api-ms-win-crt-time-l1-1-0.def",
-			"api-ms-win-crt-utility-l1-1-0.def",
-		}
-	}
-	for _, name := range libs {
+	// Normally all the api-ms-win-crt-*.def files are all compiled to a single
+	// .lib file. But to simplify things, we're going to leave them as separate
+	// files.
+	for _, name := range []string{
+		"kernel32.def.in",
+		"api-ms-win-crt-conio-l1-1-0.def",
+		"api-ms-win-crt-convert-l1-1-0.def.in",
+		"api-ms-win-crt-environment-l1-1-0.def",
+		"api-ms-win-crt-filesystem-l1-1-0.def",
+		"api-ms-win-crt-heap-l1-1-0.def",
+		"api-ms-win-crt-locale-l1-1-0.def",
+		"api-ms-win-crt-math-l1-1-0.def.in",
+		"api-ms-win-crt-multibyte-l1-1-0.def",
+		"api-ms-win-crt-private-l1-1-0.def.in",
+		"api-ms-win-crt-process-l1-1-0.def",
+		"api-ms-win-crt-runtime-l1-1-0.def.in",
+		"api-ms-win-crt-stdio-l1-1-0.def",
+		"api-ms-win-crt-string-l1-1-0.def",
+		"api-ms-win-crt-time-l1-1-0.def",
+		"api-ms-win-crt-utility-l1-1-0.def",
+	} {
 		outpath := filepath.Join(tmpdir, filepath.Base(name)+".lib")
 		inpath := filepath.Join(root, "lib/mingw-w64/mingw-w64-crt/lib-common/"+name)
 		job := &compileJob{
@@ -144,9 +93,6 @@ func makeMinGWExtraLibs(tmpdir, goarch string) []*compileJob {
 				defpath := inpath
 				var archDef, emulation string
 				switch goarch {
-				case "386":
-					archDef = "-DDEF_I386"
-					emulation = "i386pe"
 				case "amd64":
 					archDef = "-DDEF_X64"
 					emulation = "i386pep"

builder/musl.go

@@ -121,7 +121,7 @@ var libMusl = Library{
 		return cflags
 	},
 	sourceDir: func() string { return filepath.Join(goenv.Get("TINYGOROOT"), "lib/musl/src") },
-	librarySources: func(target string, _ bool) ([]string, error) {
+	librarySources: func(target string) ([]string, error) {
 		arch := compileopts.MuslArchitecture(target)
 		globs := []string{
 			"conf/*.c",

builder/picolibc.go

@@ -43,7 +43,7 @@ var libPicolibc = Library{
 		}
 	},
 	sourceDir: func() string { return filepath.Join(goenv.Get("TINYGOROOT"), "lib/picolibc/newlib") },
-	librarySources: func(target string, _ bool) ([]string, error) {
+	librarySources: func(target string) ([]string, error) {
 		sources := append([]string(nil), picolibcSources...)
 		if !strings.HasPrefix(target, "avr") {
 			// Small chips without long jumps can't compile many files (printf,

builder/sizes.go

@@ -490,7 +490,7 @@ func loadProgramSize(path string, packagePathMap map[string]string) (*programSiz
 				continue
 			}
 			if section.Type == elf.SHT_NOBITS {
-				if strings.HasPrefix(section.Name, ".stack") {
+				if section.Name == ".stack" {
 					// TinyGo emits stack sections on microcontroller using the
 					// ".stack" name.
 					// This is a bit ugly, but I don't think there is a way to

builder/sizes_test.go

@@ -42,9 +42,9 @@ func TestBinarySize(t *testing.T) {
 	// This is a small number of very diverse targets that we want to test.
 	tests := []sizeTest{
 		// microcontrollers
-		{"hifive1b", "examples/echo", 3884, 280, 0, 2268},
-		{"microbit", "examples/serial", 2852, 360, 8, 2272},
-		{"wioterminal", "examples/pininterrupt", 7337, 1491, 116, 6912},
+		{"hifive1b", "examples/echo", 4560, 280, 0, 2268},
+		{"microbit", "examples/serial", 2924, 388, 8, 2272},
+		{"wioterminal", "examples/pininterrupt", 7383, 1489, 116, 6912},
 
 		// TODO: also check wasm. Right now this is difficult, because
 		// wasm binaries are run through wasm-opt and therefore the

builder/wasilibc.go

@@ -93,13 +93,12 @@ var libWasiLibc = Library{
 			"-Wall",
 			"-std=gnu11",
 			"-nostdlibinc",
-			"-mnontrapping-fptoint", "-msign-ext", "-mbulk-memory",
+			"-mnontrapping-fptoint", "-msign-ext",
 			"-Wno-null-pointer-arithmetic", "-Wno-unused-parameter", "-Wno-sign-compare", "-Wno-unused-variable", "-Wno-unused-function", "-Wno-ignored-attributes", "-Wno-missing-braces", "-Wno-ignored-pragmas", "-Wno-unused-but-set-variable", "-Wno-unknown-warning-option",
 			"-Wno-parentheses", "-Wno-shift-op-parentheses", "-Wno-bitwise-op-parentheses", "-Wno-logical-op-parentheses", "-Wno-string-plus-int", "-Wno-dangling-else", "-Wno-unknown-pragmas",
 			"-DNDEBUG",
 			"-D__wasilibc_printscan_no_long_double",
 			"-D__wasilibc_printscan_full_support_option=\"long double support is disabled\"",
-			"-DBULK_MEMORY_THRESHOLD=32", // default threshold in wasi-libc
 			"-isystem", headerPath,
 			"-I" + libcDir + "/libc-top-half/musl/src/include",
 			"-I" + libcDir + "/libc-top-half/musl/src/internal",
@@ -120,7 +119,7 @@ var libWasiLibc = Library{
 		return nil
 	},
 	sourceDir: func() string { return filepath.Join(goenv.Get("TINYGOROOT"), "lib/wasi-libc") },
-	librarySources: func(target string, libcNeedsMalloc bool) ([]string, error) {
+	librarySources: func(target string) ([]string, error) {
 		type filePattern struct {
 			glob    string
 			exclude []string
@@ -169,11 +168,6 @@ var libWasiLibc = Library{
 			{glob: "libc-bottom-half/sources/*.c"},
 		}
 
-		// We're using the Boehm GC, so we need a heap implementation in the libc.
-		if libcNeedsMalloc {
-			globs = append(globs, filePattern{glob: "dlmalloc/src/dlmalloc.c"})
-		}
-
 		// See: LIBC_TOP_HALF_MUSL_SOURCES in the Makefile
 		sources := []string{
 			"libc-top-half/musl/src/misc/a64l.c",

builder/wasmbuiltins.go

@@ -29,8 +29,6 @@ var libWasmBuiltins = Library{
 			"-Wall",
 			"-std=gnu11",
 			"-nostdlibinc",
-			"-mnontrapping-fptoint", // match wasm-unknown (default on in LLVM 20)
-			"-mno-bulk-memory",      // same here
 			"-isystem", libcDir + "/libc-top-half/musl/arch/wasm32",
 			"-isystem", libcDir + "/libc-top-half/musl/arch/generic",
 			"-isystem", libcDir + "/libc-top-half/musl/src/internal",
@@ -41,7 +39,7 @@ var libWasmBuiltins = Library{
 		}
 	},
 	sourceDir: func() string { return filepath.Join(goenv.Get("TINYGOROOT"), "lib/wasi-libc") },
-	librarySources: func(target string, _ bool) ([]string, error) {
+	librarySources: func(target string) ([]string, error) {
 		return []string{
 			// memory builtins needed for llvm.memcpy.*, llvm.memmove.*, and
 			// llvm.memset.* LLVM intrinsics.

cgo/libclang_config_llvm19.go

@@ -1,4 +1,4 @@
-//go:build !byollvm && llvm19
+//go:build !byollvm && !llvm15 && !llvm16 && !llvm17 && !llvm18
 
 package cgo
 

cgo/libclang_config_llvm20.go

@@ -1,15 +0,0 @@
-//go:build !byollvm && !llvm15 && !llvm16 && !llvm17 && !llvm18 && !llvm19
-
-package cgo
-
-/*
-#cgo linux        CFLAGS:  -I/usr/include/llvm-20 -I/usr/include/llvm-c-20 -I/usr/lib/llvm-20/include
-#cgo darwin,amd64 CFLAGS:  -I/usr/local/opt/llvm@20/include
-#cgo darwin,arm64 CFLAGS:  -I/opt/homebrew/opt/llvm@20/include
-#cgo freebsd      CFLAGS:  -I/usr/local/llvm20/include
-#cgo linux        LDFLAGS: -L/usr/lib/llvm-20/lib -lclang
-#cgo darwin,amd64 LDFLAGS: -L/usr/local/opt/llvm@20/lib -lclang
-#cgo darwin,arm64 LDFLAGS: -L/opt/homebrew/opt/llvm@20/lib -lclang
-#cgo freebsd      LDFLAGS: -L/usr/local/llvm20/lib -lclang
-*/
-import "C"

compileopts/config.go

@@ -22,8 +22,7 @@ import (
 // builder.Library struct but that's hard to do since we want to know the
 // library path in advance in several places).
 var libVersions = map[string]int{
-	"musl":  3,
-	"bdwgc": 2,
+	"musl": 3,
 }
 
 // Config keeps all configuration affecting the build in a single struct.
@@ -111,11 +110,6 @@ func (c *Config) BuildTags() []string {
 		"math_big_pure_go",                           // to get math/big to work
 		"gc." + c.GC(), "scheduler." + c.Scheduler(), // used inside the runtime package
 		"serial." + c.Serial()}...) // used inside the machine package
-	switch c.Scheduler() {
-	case "threads", "cores":
-	default:
-		tags = append(tags, "tinygo.unicore")
-	}
 	for i := 1; i <= c.GoMinorVersion; i++ {
 		tags = append(tags, fmt.Sprintf("go1.%d", i))
 	}
@@ -139,7 +133,7 @@ func (c *Config) GC() string {
 // that can be traced by the garbage collector.
 func (c *Config) NeedsStackObjects() bool {
 	switch c.GC() {
-	case "conservative", "custom", "precise", "boehm":
+	case "conservative", "custom", "precise":
 		for _, tag := range c.BuildTags() {
 			if tag == "tinygo.wasm" {
 				return true
@@ -264,15 +258,6 @@ func MuslArchitecture(triple string) string {
 	return CanonicalArchName(triple)
 }
 
-// Returns true if the libc needs to include malloc, for the libcs where this
-// matters.
-func (c *Config) LibcNeedsMalloc() bool {
-	if c.GC() == "boehm" && c.Target.Libc == "wasi-libc" {
-		return true
-	}
-	return false
-}
-
 // LibraryPath returns the path to the library build directory. The path will be
 // a library path in the cache directory (which might not yet be built).
 func (c *Config) LibraryPath(name string) string {
@@ -296,14 +281,9 @@ func (c *Config) LibraryPath(name string) string {
 		archname += "-v" + strconv.Itoa(v)
 	}
 
-	options := ""
-	if c.LibcNeedsMalloc() {
-		options += "+malloc"
-	}
-
 	// No precompiled library found. Determine the path name that will be used
 	// in the build cache.
-	return filepath.Join(goenv.Get("GOCACHE"), name+options+"-"+archname)
+	return filepath.Join(goenv.Get("GOCACHE"), name+"-"+archname)
 }
 
 // DefaultBinaryExtension returns the default extension for binaries, such as
@@ -418,25 +398,15 @@ func (c *Config) LibcCFlags() []string {
 	case "mingw-w64":
 		root := goenv.Get("TINYGOROOT")
 		path := c.LibraryPath("mingw-w64")
-		cflags := []string{
+		return []string{
 			"-nostdlibinc",
 			"-isystem", filepath.Join(path, "include"),
 			"-isystem", filepath.Join(root, "lib", "mingw-w64", "mingw-w64-headers", "crt"),
 			"-isystem", filepath.Join(root, "lib", "mingw-w64", "mingw-w64-headers", "include"),
 			"-isystem", filepath.Join(root, "lib", "mingw-w64", "mingw-w64-headers", "defaults", "include"),
+			"-D_UCRT",
+			"-D_WIN32_WINNT=0x0a00", // target Windows 10
 		}
-		if c.GOARCH() == "386" {
-			cflags = append(cflags,
-				"-D__MSVCRT_VERSION__=0x700", // Microsoft Visual C++ .NET 2002
-				"-D_WIN32_WINNT=0x0501",      // target Windows XP
-			)
-		} else {
-			cflags = append(cflags,
-				"-D_UCRT",
-				"-D_WIN32_WINNT=0x0a00", // target Windows 10
-			)
-		}
-		return cflags
 	case "":
 		// No libc specified, nothing to add.
 		return nil

compileopts/options.go

@@ -10,7 +10,7 @@ import (
 var (
 	validBuildModeOptions     = []string{"default", "c-shared", "wasi-legacy"}
 	validGCOptions            = []string{"none", "leaking", "conservative", "custom", "precise", "boehm"}
-	validSchedulerOptions     = []string{"none", "tasks", "asyncify", "threads", "cores"}
+	validSchedulerOptions     = []string{"none", "tasks", "asyncify", "threads"}
 	validSerialOptions        = []string{"none", "uart", "usb", "rtt"}
 	validPrintSizeOptions     = []string{"none", "short", "full", "html"}
 	validPanicStrategyOptions = []string{"print", "trap"}
@@ -53,6 +53,7 @@ type Options struct {
 	Programmer      string
 	OpenOCDCommands []string
 	LLVMFeatures    string
+	PrintJSON       bool
 	Monitor         bool
 	BaudRate        int
 	Timeout         time.Duration

compileopts/options_test.go

@@ -10,7 +10,7 @@ import (
 func TestVerifyOptions(t *testing.T) {
 
 	expectedGCError := errors.New(`invalid gc option 'incorrect': valid values are none, leaking, conservative, custom, precise, boehm`)
-	expectedSchedulerError := errors.New(`invalid scheduler option 'incorrect': valid values are none, tasks, asyncify, threads, cores`)
+	expectedSchedulerError := errors.New(`invalid scheduler option 'incorrect': valid values are none, tasks, asyncify, threads`)
 	expectedPrintSizeError := errors.New(`invalid size option 'incorrect': valid values are none, short, full, html`)
 	expectedPanicStrategyError := errors.New(`invalid panic option 'incorrect': valid values are print, trap`)
 

compileopts/target.go

@@ -189,7 +189,7 @@ func LoadTarget(options *Options) (*TargetSpec, error) {
 		case "wasip2":
 			options.Target = "wasip2"
 		default:
-			return nil, errors.New("GOARCH=wasm but GOOS is not set correctly. Please set GOOS to js, wasip1, or wasip2.")
+			return nil, errors.New("GOARCH=wasm but GOOS is not set correctly. Please set GOOS to wasm, wasip1, or wasip2.")
 		}
 	}
 
@@ -369,7 +369,7 @@ func defaultTarget(options *Options) (*TargetSpec, error) {
 			return nil, fmt.Errorf("invalid GOMIPS=%s: must be hardfloat or softfloat", options.GOMIPS)
 		}
 	case "wasm":
-		return nil, fmt.Errorf("GOARCH=wasm but GOOS is unset. Please set GOOS to js, wasip1, or wasip2.")
+		return nil, fmt.Errorf("GOARCH=wasm but GOOS is unset. Please set GOOS to wasm, wasip1, or wasip2.")
 	default:
 		return nil, fmt.Errorf("unknown GOARCH=%s", options.GOARCH)
 	}
@@ -385,7 +385,7 @@ func defaultTarget(options *Options) (*TargetSpec, error) {
 			platformVersion = "11.0.0" // first macosx platform with arm64 support
 		}
 		llvmvendor = "apple"
-		spec.Scheduler = "threads"
+		spec.Scheduler = "tasks"
 		spec.Linker = "ld.lld"
 		spec.Libc = "darwin-libSystem"
 		// Use macosx* instead of darwin, otherwise darwin/arm64 will refer to
@@ -399,7 +399,6 @@ func defaultTarget(options *Options) (*TargetSpec, error) {
 		)
 		spec.ExtraFiles = append(spec.ExtraFiles,
 			"src/internal/futex/futex_darwin.c",
-			"src/internal/task/task_threads.c",
 			"src/runtime/os_darwin.c",
 			"src/runtime/runtime_unix.c",
 			"src/runtime/signal.c")
@@ -434,22 +433,14 @@ func defaultTarget(options *Options) (*TargetSpec, error) {
 		spec.Scheduler = "tasks"
 		spec.Linker = "ld.lld"
 		spec.Libc = "mingw-w64"
+		// Note: using a medium code model, low image base and no ASLR
+		// because Go doesn't really need those features. ASLR patches
+		// around issues for unsafe languages like C/C++ that are not
+		// normally present in Go (without explicitly opting in).
+		// For more discussion:
+		// https://groups.google.com/g/Golang-nuts/c/Jd9tlNc6jUE/m/Zo-7zIP_m3MJ?pli=1
 		switch options.GOARCH {
-		case "386":
-			spec.LDFlags = append(spec.LDFlags,
-				"-m", "i386pe",
-				"--major-os-version", "4",
-				"--major-subsystem-version", "4",
-			)
-			// __udivdi3 is not present in ucrt it seems.
-			spec.RTLib = "compiler-rt"
 		case "amd64":
-			// Note: using a medium code model, low image base and no ASLR
-			// because Go doesn't really need those features. ASLR patches
-			// around issues for unsafe languages like C/C++ that are not
-			// normally present in Go (without explicitly opting in).
-			// For more discussion:
-			// https://groups.google.com/g/Golang-nuts/c/Jd9tlNc6jUE/m/Zo-7zIP_m3MJ?pli=1
 			spec.LDFlags = append(spec.LDFlags,
 				"-m", "i386pep",
 				"--image-base", "0x400000",
@@ -471,12 +462,6 @@ func defaultTarget(options *Options) (*TargetSpec, error) {
 		return nil, fmt.Errorf("unknown GOOS=%s", options.GOOS)
 	}
 
-	if spec.GC == "boehm" {
-		// Add this file only when needed. This fixes a build failure on
-		// Windows.
-		spec.ExtraFiles = append(spec.ExtraFiles, "src/runtime/gc_boehm.c")
-	}
-
 	// Target triples (which actually have four components, but are called
 	// triples for historical reasons) have the form:
 	//   arch-vendor-os-environment

compiler/calls.go

@@ -76,15 +76,7 @@ func (b *builder) createCall(fnType llvm.Type, fn llvm.Value, args []llvm.Value,
 		fragments := b.expandFormalParam(arg)
 		expanded = append(expanded, fragments...)
 	}
-	call := b.CreateCall(fnType, fn, expanded, name)
-	if !fn.IsAFunction().IsNil() {
-		if cc := fn.FunctionCallConv(); cc != llvm.CCallConv {
-			// Set a different calling convention if needed.
-			// This is needed for GetModuleHandleExA on Windows, for example.
-			call.SetInstructionCallConv(cc)
-		}
-	}
-	return call
+	return b.CreateCall(fnType, fn, expanded, name)
 }
 
 // createInvoke is like createCall but continues execution at the landing pad if

compiler/compiler.go

@@ -389,7 +389,7 @@ func (c *compilerContext) getLLVMType(goType types.Type) llvm.Type {
 // makeLLVMType creates a LLVM type for a Go type. Don't call this, use
 // getLLVMType instead.
 func (c *compilerContext) makeLLVMType(goType types.Type) llvm.Type {
-	switch typ := types.Unalias(goType).(type) {
+	switch typ := goType.(type) {
 	case *types.Array:
 		elemType := c.getLLVMType(typ.Elem())
 		return llvm.ArrayType(elemType, int(typ.Len()))
@@ -497,21 +497,6 @@ func (c *compilerContext) createDIType(typ types.Type) llvm.Metadata {
 	llvmType := c.getLLVMType(typ)
 	sizeInBytes := c.targetData.TypeAllocSize(llvmType)
 	switch typ := typ.(type) {
-	case *types.Alias:
-		// Implement types.Alias just like types.Named: by treating them like a
-		// C typedef.
-		temporaryMDNode := c.dibuilder.CreateReplaceableCompositeType(llvm.Metadata{}, llvm.DIReplaceableCompositeType{
-			Tag:         dwarf.TagTypedef,
-			SizeInBits:  sizeInBytes * 8,
-			AlignInBits: uint32(c.targetData.ABITypeAlignment(llvmType)) * 8,
-		})
-		c.ditypes[typ] = temporaryMDNode
-		md := c.dibuilder.CreateTypedef(llvm.DITypedef{
-			Type: c.getDIType(types.Unalias(typ)), // TODO: use typ.Rhs in Go 1.23
-			Name: typ.String(),
-		})
-		temporaryMDNode.ReplaceAllUsesWith(md)
-		return md
 	case *types.Array:
 		return c.dibuilder.CreateArrayType(llvm.DIArrayType{
 			SizeInBits:  sizeInBytes * 8,
@@ -874,11 +859,6 @@ func (c *compilerContext) createPackage(irbuilder llvm.Builder, pkg *ssa.Package
 				// Interfaces don't have concrete methods.
 				continue
 			}
-			if _, isalias := member.Type().(*types.Alias); isalias {
-				// Aliases don't need to be redefined, since they just refer to
-				// an already existing type whose methods will be defined.
-				continue
-			}
 
 			// Named type. We should make sure all methods are created.
 			// This includes both functions with pointer receivers and those
@@ -1856,7 +1836,15 @@ func (b *builder) createBuiltin(argTypes []types.Type, argValues []llvm.Value, c
 //
 // This is also where compiler intrinsics are implemented.
 func (b *builder) createFunctionCall(instr *ssa.CallCommon) (llvm.Value, error) {
-	// See if this is an intrinsic function that is handled specially.
+	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
+	exported := false
 	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.
@@ -1892,29 +1880,13 @@ func (b *builder) createFunctionCall(instr *ssa.CallCommon) (llvm.Value, error)
 			return llvm.ConstInt(b.ctx.Int8Type(), panicStrategy, false), nil
 		case name == "runtime/interrupt.New":
 			return b.createInterruptGlobal(instr)
-		case name == "runtime.exportedFuncPtr":
-			_, ptr := b.getFunction(instr.Args[0].(*ssa.Function))
-			return b.CreatePtrToInt(ptr, b.uintptrType, ""), nil
-		case name == "(*runtime/interrupt.Checkpoint).Save":
-			return b.createInterruptCheckpoint(instr.Args[0]), nil
 		case name == "internal/abi.FuncPCABI0":
 			retval := b.createDarwinFuncPCABI0Call(instr)
 			if !retval.IsNil() {
 				return retval, nil
 			}
 		}
-	}
 
-	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
-	exported := false
-	if fn := instr.StaticCallee(); fn != nil {
 		calleeType, callee = b.getFunction(fn)
 		info := b.getFunctionInfo(fn)
 		if callee.IsNil() {

compiler/defer.go

@@ -103,11 +103,10 @@ func (b *builder) createLandingPad() {
 	b.CreateBr(b.blockEntries[b.fn.Recover])
 }
 
-// Create a checkpoint (similar to setjmp). This emits inline assembly that
-// stores the current program counter inside the ptr address (actually
-// ptr+sizeof(ptr)) and then returns a boolean indicating whether this is the
-// normal flow (false) or we jumped here from somewhere else (true).
-func (b *builder) createCheckpoint(ptr llvm.Value) llvm.Value {
+// createInvokeCheckpoint saves the function state at the given point, to
+// continue at the landing pad if a panic happened. This is implemented using a
+// setjmp-like construct.
+func (b *builder) createInvokeCheckpoint() {
 	// Construct inline assembly equivalents of setjmp.
 	// The assembly works as follows:
 	//   * All registers (both callee-saved and caller saved) are clobbered
@@ -218,19 +217,11 @@ li a0, 0
 		// This case should have been handled by b.supportsRecover().
 		b.addError(b.fn.Pos(), "unknown architecture for defer: "+b.archFamily())
 	}
-	asmType := llvm.FunctionType(resultType, []llvm.Type{b.dataPtrType}, false)
+	asmType := llvm.FunctionType(resultType, []llvm.Type{b.deferFrame.Type()}, false)
 	asm := llvm.InlineAsm(asmType, asmString, constraints, false, false, 0, false)
-	result := b.CreateCall(asmType, asm, []llvm.Value{ptr}, "setjmp")
+	result := b.CreateCall(asmType, asm, []llvm.Value{b.deferFrame}, "setjmp")
 	result.AddCallSiteAttribute(-1, b.ctx.CreateEnumAttribute(llvm.AttributeKindID("returns_twice"), 0))
 	isZero := b.CreateICmp(llvm.IntEQ, result, llvm.ConstInt(resultType, 0, false), "setjmp.result")
-	return isZero
-}
-
-// createInvokeCheckpoint saves the function state at the given point, to
-// continue at the landing pad if a panic happened. This is implemented using a
-// setjmp-like construct.
-func (b *builder) createInvokeCheckpoint() {
-	isZero := b.createCheckpoint(b.deferFrame)
 	continueBB := b.insertBasicBlock("")
 	b.CreateCondBr(isZero, continueBB, b.landingpad)
 	b.SetInsertPointAtEnd(continueBB)

compiler/inlineasm.go

@@ -38,10 +38,10 @@ func (b *builder) createInlineAsm(args []ssa.Value) (llvm.Value, error) {
 // provided immediately. For example:
 //
 //	arm.AsmFull(
-//	    "str {value}, [{result}]",
+//	    "str {value}, {result}",
 //	    map[string]interface{}{
-//	        "value":  1,
-//	        "result": uintptr(unsafe.Pointer(&dest)),
+//	        "value":  1
+//	        "result": &dest,
 //	    })
 func (b *builder) createInlineAsmFull(instr *ssa.CallCommon) (llvm.Value, error) {
 	asmString := constant.StringVal(instr.Args[0].(*ssa.Const).Value)
@@ -249,15 +249,3 @@ func (b *builder) emitCSROperation(call *ssa.CallCommon) (llvm.Value, error) {
 		return llvm.Value{}, b.makeError(call.Pos(), "unknown CSR operation: "+name)
 	}
 }
-
-// Implement runtime/interrupt.Checkpoint.Save. It needs to be implemented
-// directly at the call site. If it isn't implemented directly at the call site
-// (but instead through a function call), it might result in an overwritten
-// stack in the non-jump return case.
-func (b *builder) createInterruptCheckpoint(ptr ssa.Value) llvm.Value {
-	addr := b.getValue(ptr, ptr.Pos())
-	b.createNilCheck(ptr, addr, "deref")
-	stackPointer := b.readStackPointer()
-	b.CreateStore(stackPointer, addr)
-	return b.createCheckpoint(addr)
-}

compiler/interface.go

@@ -122,9 +122,6 @@ func (c *compilerContext) pkgPathPtr(pkgpath string) llvm.Value {
 // This function returns a pointer to the 'kind' field (which might not be the
 // first field in the struct).
 func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
-	// Resolve alias types: alias types are resolved at compile time.
-	typ = types.Unalias(typ)
-
 	ms := c.program.MethodSets.MethodSet(typ)
 	hasMethodSet := ms.Len() != 0
 	_, isInterface := typ.Underlying().(*types.Interface)
@@ -515,7 +512,7 @@ var basicTypeNames = [...]string{
 // interface lowering pass to assign type codes as expected by the reflect
 // package. See getTypeCodeNum.
 func getTypeCodeName(t types.Type) (string, bool) {
-	switch t := types.Unalias(t).(type) {
+	switch t := t.(type) {
 	case *types.Named:
 		if t.Obj().Parent() != t.Obj().Pkg().Scope() {
 			return "named:" + t.String() + "$local", true
@@ -945,7 +942,7 @@ func signature(sig *types.Signature) string {
 // 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) {
+	switch t := t.(type) {
 	case *types.Array:
 		return "[" + strconv.FormatInt(t.Len(), 10) + "]" + typestring(t.Elem())
 	case *types.Basic:

compiler/intrinsics.go

@@ -121,29 +121,6 @@ func (b *builder) createKeepAliveImpl() {
 	b.CreateRetVoid()
 }
 
-// createAbiEscapeImpl implements the generic internal/abi.Escape function. It
-// currently only supports pointer types.
-func (b *builder) createAbiEscapeImpl() {
-	b.createFunctionStart(true)
-
-	// The first parameter is assumed to be a pointer. This is checked at the
-	// call site of createAbiEscapeImpl.
-	pointerValue := b.getValue(b.fn.Params[0], getPos(b.fn))
-
-	// Create an equivalent of the following C code, which is basically just a
-	// nop but ensures the pointerValue is kept alive:
-	//
-	//     __asm__ __volatile__("" : : "r"(pointerValue))
-	//
-	// It should be portable to basically everything as the "r" register type
-	// exists basically everywhere.
-	asmType := llvm.FunctionType(b.dataPtrType, []llvm.Type{b.dataPtrType}, false)
-	asmFn := llvm.InlineAsm(asmType, "", "=r,0", true, false, 0, false)
-	result := b.createCall(asmType, asmFn, []llvm.Value{pointerValue}, "")
-
-	b.CreateRet(result)
-}
-
 var mathToLLVMMapping = map[string]string{
 	"math.Ceil":  "llvm.ceil.f64",
 	"math.Exp":   "llvm.exp.f64",

compiler/llvm.go

@@ -452,21 +452,6 @@ func (b *builder) readStackPointer() llvm.Value {
 	return b.CreateCall(stacksave.GlobalValueType(), stacksave, nil, "")
 }
 
-// writeStackPointer emits a LLVM intrinsic call that updates the current stack
-// pointer.
-func (b *builder) writeStackPointer(sp llvm.Value) {
-	name := "llvm.stackrestore.p0"
-	if llvmutil.Version() < 18 {
-		name = "llvm.stackrestore" // backwards compatibility with LLVM 17 and below
-	}
-	stackrestore := b.mod.NamedFunction(name)
-	if stackrestore.IsNil() {
-		fnType := llvm.FunctionType(b.ctx.VoidType(), []llvm.Type{b.dataPtrType}, false)
-		stackrestore = llvm.AddFunction(b.mod, name, fnType)
-	}
-	b.CreateCall(stackrestore.GlobalValueType(), stackrestore, []llvm.Value{sp}, "")
-}
-
 // createZExtOrTrunc lets the input value fit in the output type bits, by zero
 // extending or truncating the integer.
 func (b *builder) createZExtOrTrunc(value llvm.Value, t llvm.Type) llvm.Value {

compiler/llvmutil/llvm.go

@@ -218,7 +218,7 @@ func Version() int {
 	return major
 }
 
-// ByteOrder returns the byte order for the given target triple. Most targets are little
+// Return 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 {
 	if strings.HasPrefix(target, "mips-") {

compiler/map.go

@@ -248,7 +248,7 @@ func (b *builder) createMapIteratorNext(rangeVal ssa.Value, llvmRangeVal, it llv
 // can be compared with runtime.memequal.  Note that padding bytes are undef
 // and can alter two "equal" structs being equal when compared with memequal.
 func hashmapIsBinaryKey(keyType types.Type) bool {
-	switch keyType := keyType.Underlying().(type) {
+	switch keyType := keyType.(type) {
 	case *types.Basic:
 		return keyType.Info()&(types.IsBoolean|types.IsInteger) != 0
 	case *types.Pointer:
@@ -263,6 +263,8 @@ func hashmapIsBinaryKey(keyType types.Type) bool {
 		return true
 	case *types.Array:
 		return hashmapIsBinaryKey(keyType.Elem())
+	case *types.Named:
+		return hashmapIsBinaryKey(keyType.Underlying())
 	default:
 		return false
 	}

compiler/symbol.go

@@ -208,12 +208,6 @@ func (c *compilerContext) getFunction(fn *ssa.Function) (llvm.Type, llvm.Value)
 			// > circumstances, and should not be exposed to source languages.
 			llvmutil.AppendToGlobal(c.mod, "llvm.compiler.used", llvmFn)
 		}
-	case "GetModuleHandleExA", "GetProcAddress", "GetSystemInfo", "GetSystemTimeAsFileTime", "LoadLibraryExW", "QueryPerformanceCounter", "QueryPerformanceFrequency", "QueryUnbiasedInterruptTime", "SetEnvironmentVariableA", "Sleep", "SystemFunction036", "VirtualAlloc":
-		// On Windows we need to use a special calling convention for some
-		// external calls.
-		if c.GOOS == "windows" && c.GOARCH == "386" {
-			llvmFn.SetFunctionCallConv(llvm.X86StdcallCallConv)
-		}
 	}
 
 	// External/exported functions may not retain pointer values.
@@ -253,23 +247,6 @@ func (c *compilerContext) maybeCreateSyntheticFunction(fn *ssa.Function, llvmFn
 	// The exception is the package initializer, which does appear in the
 	// *ssa.Package members and so shouldn't be created here.
 	if fn.Synthetic != "" && fn.Synthetic != "package initializer" && fn.Synthetic != "generic function" && fn.Synthetic != "range-over-func yield" {
-		if origin := fn.Origin(); origin != nil && origin.RelString(nil) == "internal/abi.Escape" {
-			// This is a special implementation or internal/abi.Escape, which
-			// can only really be implemented in the compiler.
-			// For simplicity we'll only implement pointer parameters for now.
-			if _, ok := fn.Params[0].Type().Underlying().(*types.Pointer); ok {
-				irbuilder := c.ctx.NewBuilder()
-				defer irbuilder.Dispose()
-				b := newBuilder(c, irbuilder, fn)
-				b.createAbiEscapeImpl()
-				llvmFn.SetLinkage(llvm.LinkOnceODRLinkage)
-				llvmFn.SetUnnamedAddr(true)
-			}
-			// If the parameter is not of a pointer type, it will be left
-			// unimplemented. This will result in a linker error if the function
-			// is really called, making it clear it needs to be implemented.
-			return
-		}
 		if len(fn.Blocks) == 0 {
 			c.addError(fn.Pos(), "missing function body")
 			return
@@ -630,7 +607,7 @@ func (c *compilerContext) addStandardAttributes(llvmFn llvm.Value) {
 // linkName is equal to .RelString(nil) on a global and extern is false, but for
 // some symbols this is different (due to //go:extern for example).
 type globalInfo struct {
-	linkName string // go:extern, go:linkname
+	linkName string // go:extern
 	extern   bool   // go:extern
 	align    int    // go:align
 	section  string // go:section
@@ -715,14 +692,14 @@ func (c *compilerContext) getGlobalInfo(g *ssa.Global) globalInfo {
 	// Check for //go: pragmas, which may change the link name (among others).
 	doc := c.astComments[info.linkName]
 	if doc != nil {
-		info.parsePragmas(doc, c, g)
+		info.parsePragmas(doc)
 	}
 	return info
 }
 
 // Parse //go: pragma comments from the source. In particular, it parses the
-// //go:extern and //go:linkname pragmas on globals.
-func (info *globalInfo) parsePragmas(doc *ast.CommentGroup, c *compilerContext, g *ssa.Global) {
+// //go:extern pragma on globals.
+func (info *globalInfo) parsePragmas(doc *ast.CommentGroup) {
 	for _, comment := range doc.List {
 		if !strings.HasPrefix(comment.Text, "//go:") {
 			continue
@@ -743,17 +720,6 @@ func (info *globalInfo) parsePragmas(doc *ast.CommentGroup, c *compilerContext,
 			if len(parts) == 2 {
 				info.section = parts[1]
 			}
-		case "//go:linkname":
-			if len(parts) != 3 || parts[1] != g.Name() {
-				continue
-			}
-			// Only enable go:linkname when the package imports "unsafe".
-			// This is a slightly looser requirement than what gc uses: gc
-			// requires the file to import "unsafe", not the package as a
-			// whole.
-			if hasUnsafeImport(g.Pkg.Pkg) {
-				info.linkName = parts[2]
-			}
 		}
 	}
 }

compiler/syscall.go

@@ -268,8 +268,6 @@ func (b *builder) createSyscall(call *ssa.CallCommon) (llvm.Value, error) {
 		// The signature looks like this:
 		//   func Syscall(trap, nargs, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno)
 
-		isI386 := strings.HasPrefix(b.Triple, "i386-")
-
 		// Prepare input values.
 		var paramTypes []llvm.Type
 		var params []llvm.Value
@@ -287,17 +285,11 @@ func (b *builder) createSyscall(call *ssa.CallCommon) (llvm.Value, error) {
 		if setLastError.IsNil() {
 			llvmType := llvm.FunctionType(b.ctx.VoidType(), []llvm.Type{b.ctx.Int32Type()}, false)
 			setLastError = llvm.AddFunction(b.mod, "SetLastError", llvmType)
-			if isI386 {
-				setLastError.SetFunctionCallConv(llvm.X86StdcallCallConv)
-			}
 		}
 		getLastError := b.mod.NamedFunction("GetLastError")
 		if getLastError.IsNil() {
 			llvmType := llvm.FunctionType(b.ctx.Int32Type(), nil, false)
 			getLastError = llvm.AddFunction(b.mod, "GetLastError", llvmType)
-			if isI386 {
-				getLastError.SetFunctionCallConv(llvm.X86StdcallCallConv)
-			}
 		}
 
 		// Now do the actual call. Pseudocode:
@@ -308,24 +300,9 @@ func (b *builder) createSyscall(call *ssa.CallCommon) (llvm.Value, error) {
 		// Note that SetLastError/GetLastError could be replaced with direct
 		// access to the thread control block, which is probably smaller and
 		// faster. The Go runtime does this in assembly.
-		// On windows/386, we also need to save/restore the stack pointer. I'm
-		// not entirely sure why this is needed, but without it these calls
-		// change the stack pointer leading to a crash soon after.
-		setLastErrorCall := b.CreateCall(setLastError.GlobalValueType(), setLastError, []llvm.Value{llvm.ConstNull(b.ctx.Int32Type())}, "")
-		var sp llvm.Value
-		if isI386 {
-			setLastErrorCall.SetInstructionCallConv(llvm.X86StdcallCallConv)
-			sp = b.readStackPointer()
-		}
+		b.CreateCall(setLastError.GlobalValueType(), setLastError, []llvm.Value{llvm.ConstNull(b.ctx.Int32Type())}, "")
 		syscallResult := b.CreateCall(llvmType, fnPtr, params, "")
-		if isI386 {
-			syscallResult.SetInstructionCallConv(llvm.X86StdcallCallConv)
-			b.writeStackPointer(sp)
-		}
 		errResult := b.CreateCall(getLastError.GlobalValueType(), getLastError, nil, "err")
-		if isI386 {
-			errResult.SetInstructionCallConv(llvm.X86StdcallCallConv)
-		}
 		if b.uintptrType != b.ctx.Int32Type() {
 			errResult = b.CreateZExt(errResult, b.uintptrType, "err.uintptr")
 		}

compiler/testdata/basic.ll

@@ -1,6 +1,6 @@
 ; ModuleID = 'basic.go'
 source_filename = "basic.go"
-target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
+target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"
 target triple = "wasm32-unknown-wasi"
 
 %main.kv = type { float, i32, i32, i32 }
@@ -206,7 +206,7 @@ entry:
   ret void
 }
 
-attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
 attributes #3 = { nounwind }

compiler/testdata/channel.ll

@@ -1,6 +1,6 @@
 ; ModuleID = 'channel.go'
 source_filename = "channel.go"
-target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
+target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"
 target triple = "wasm32-unknown-wasi"
 
 %runtime.channelOp = type { ptr, ptr, i32, ptr }
@@ -82,11 +82,11 @@ entry:
   store i32 1, ptr %select.send.value, align 4
   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
+  %select.states.alloca.repack1 = getelementptr inbounds i8, ptr %select.states.alloca, i32 4
   store ptr %select.send.value, ptr %select.states.alloca.repack1, align 4
-  %0 = getelementptr inbounds nuw i8, ptr %select.states.alloca, i32 8
+  %0 = getelementptr inbounds i8, ptr %select.states.alloca, i32 8
   store ptr %ch2, ptr %0, align 4
-  %.repack3 = getelementptr inbounds nuw i8, ptr %select.states.alloca, i32 12
+  %.repack3 = getelementptr inbounds 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) #4
   call void @llvm.lifetime.end.p0(i64 16, ptr nonnull %select.states.alloca)
@@ -107,8 +107,8 @@ select.body:                                      ; preds = %select.next
 
 declare { i32, i1 } @runtime.chanSelect(ptr, ptr, i32, i32, ptr, i32, i32, ptr) #1
 
-attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
 attributes #3 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
 attributes #4 = { nounwind }

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

@@ -27,7 +27,7 @@ entry:
   %0 = call ptr @llvm.stacksave.p0()
   call void @runtime.setupDeferFrame(ptr nonnull %deferframe.buf, ptr %0, ptr undef) #4
   store i32 0, ptr %defer.alloca, align 4
-  %defer.alloca.repack15 = getelementptr inbounds nuw i8, ptr %defer.alloca, i32 4
+  %defer.alloca.repack15 = getelementptr inbounds i8, ptr %defer.alloca, i32 4
   store ptr null, ptr %defer.alloca.repack15, align 4
   store ptr %defer.alloca, ptr %deferPtr, align 4
   %setjmp = call i32 asm "\0Amovs r0, #0\0Amov r2, pc\0Astr r2, [r1, #4]", "={r0},{r1},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{lr},~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{cpsr},~{memory}"(ptr nonnull %deferframe.buf) #5
@@ -51,7 +51,7 @@ rundefers.loophead:                               ; preds = %3, %rundefers.block
   br i1 %stackIsNil, label %rundefers.end, label %rundefers.loop
 
 rundefers.loop:                                   ; preds = %rundefers.loophead
-  %stack.next.gep = getelementptr inbounds nuw i8, ptr %2, i32 4
+  %stack.next.gep = getelementptr inbounds i8, ptr %2, i32 4
   %stack.next = load ptr, ptr %stack.next.gep, align 4
   store ptr %stack.next, ptr %deferPtr, align 4
   %callback = load i32, ptr %2, align 4
@@ -87,7 +87,7 @@ rundefers.loophead6:                              ; preds = %5, %lpad
   br i1 %stackIsNil7, label %rundefers.end3, label %rundefers.loop5
 
 rundefers.loop5:                                  ; preds = %rundefers.loophead6
-  %stack.next.gep8 = getelementptr inbounds nuw i8, ptr %4, i32 4
+  %stack.next.gep8 = getelementptr inbounds i8, ptr %4, i32 4
   %stack.next9 = load ptr, ptr %stack.next.gep8, align 4
   store ptr %stack.next9, ptr %deferPtr, align 4
   %callback11 = load i32, ptr %4, align 4
@@ -144,11 +144,11 @@ entry:
   %0 = call ptr @llvm.stacksave.p0()
   call void @runtime.setupDeferFrame(ptr nonnull %deferframe.buf, ptr %0, ptr undef) #4
   store i32 0, ptr %defer.alloca, align 4
-  %defer.alloca.repack22 = getelementptr inbounds nuw i8, ptr %defer.alloca, i32 4
+  %defer.alloca.repack22 = getelementptr inbounds i8, ptr %defer.alloca, i32 4
   store ptr null, ptr %defer.alloca.repack22, align 4
   store ptr %defer.alloca, ptr %deferPtr, align 4
   store i32 1, ptr %defer.alloca2, align 4
-  %defer.alloca2.repack23 = getelementptr inbounds nuw i8, ptr %defer.alloca2, i32 4
+  %defer.alloca2.repack23 = getelementptr inbounds i8, ptr %defer.alloca2, i32 4
   store ptr %defer.alloca, ptr %defer.alloca2.repack23, align 4
   store ptr %defer.alloca2, ptr %deferPtr, align 4
   %setjmp = call i32 asm "\0Amovs r0, #0\0Amov r2, pc\0Astr r2, [r1, #4]", "={r0},{r1},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{lr},~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{cpsr},~{memory}"(ptr nonnull %deferframe.buf) #5
@@ -172,7 +172,7 @@ rundefers.loophead:                               ; preds = %4, %3, %rundefers.b
   br i1 %stackIsNil, label %rundefers.end, label %rundefers.loop
 
 rundefers.loop:                                   ; preds = %rundefers.loophead
-  %stack.next.gep = getelementptr inbounds nuw i8, ptr %2, i32 4
+  %stack.next.gep = getelementptr inbounds i8, ptr %2, i32 4
   %stack.next = load ptr, ptr %stack.next.gep, align 4
   store ptr %stack.next, ptr %deferPtr, align 4
   %callback = load i32, ptr %2, align 4
@@ -218,7 +218,7 @@ rundefers.loophead10:                             ; preds = %7, %6, %lpad
   br i1 %stackIsNil11, label %rundefers.end7, label %rundefers.loop9
 
 rundefers.loop9:                                  ; preds = %rundefers.loophead10
-  %stack.next.gep12 = getelementptr inbounds nuw i8, ptr %5, i32 4
+  %stack.next.gep12 = getelementptr inbounds i8, ptr %5, i32 4
   %stack.next13 = load ptr, ptr %stack.next.gep12, align 4
   store ptr %stack.next13, ptr %deferPtr, align 4
   %callback15 = load i32, ptr %5, align 4

compiler/testdata/float.ll

@@ -1,6 +1,6 @@
 ; ModuleID = 'float.go'
 source_filename = "float.go"
-target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
+target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"
 target triple = "wasm32-unknown-wasi"
 
 ; Function Attrs: allockind("alloc,zeroed") allocsize(0)
@@ -93,6 +93,6 @@ entry:
   ret i8 %0
 }
 
-attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }

compiler/testdata/func.ll

@@ -1,6 +1,6 @@
 ; ModuleID = 'func.go'
 source_filename = "func.go"
-target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
+target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"
 target triple = "wasm32-unknown-wasi"
 
 ; Function Attrs: allockind("alloc,zeroed") allocsize(0)
@@ -44,7 +44,7 @@ entry:
   ret void
 }
 
-attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
 attributes #3 = { nounwind }

compiler/testdata/gc.ll

@@ -1,6 +1,6 @@
 ; ModuleID = 'gc.go'
 source_filename = "gc.go"
-target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
+target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"
 target triple = "wasm32-unknown-wasi"
 
 %runtime._interface = type { ptr, ptr }
@@ -105,18 +105,18 @@ entry:
   %makeslice = call align 1 dereferenceable(5) ptr @runtime.alloc(i32 5, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
   call void @runtime.trackPointer(ptr nonnull %makeslice, ptr nonnull %stackalloc, ptr undef) #3
   store ptr %makeslice, ptr @main.slice1, align 4
-  store i32 5, ptr getelementptr inbounds nuw (i8, ptr @main.slice1, i32 4), align 4
-  store i32 5, ptr getelementptr inbounds nuw (i8, ptr @main.slice1, i32 8), align 4
+  store i32 5, ptr getelementptr inbounds (i8, ptr @main.slice1, i32 4), align 4
+  store i32 5, ptr getelementptr inbounds (i8, ptr @main.slice1, i32 8), align 4
   %makeslice1 = call align 4 dereferenceable(20) ptr @runtime.alloc(i32 20, ptr nonnull inttoptr (i32 67 to ptr), ptr undef) #3
   call void @runtime.trackPointer(ptr nonnull %makeslice1, ptr nonnull %stackalloc, ptr undef) #3
   store ptr %makeslice1, ptr @main.slice2, align 4
-  store i32 5, ptr getelementptr inbounds nuw (i8, ptr @main.slice2, i32 4), align 4
-  store i32 5, ptr getelementptr inbounds nuw (i8, ptr @main.slice2, i32 8), align 4
+  store i32 5, ptr getelementptr inbounds (i8, ptr @main.slice2, i32 4), align 4
+  store i32 5, ptr getelementptr inbounds (i8, ptr @main.slice2, i32 8), align 4
   %makeslice3 = call align 4 dereferenceable(60) ptr @runtime.alloc(i32 60, ptr nonnull inttoptr (i32 71 to ptr), ptr undef) #3
   call void @runtime.trackPointer(ptr nonnull %makeslice3, ptr nonnull %stackalloc, ptr undef) #3
   store ptr %makeslice3, ptr @main.slice3, align 4
-  store i32 5, ptr getelementptr inbounds nuw (i8, ptr @main.slice3, i32 4), align 4
-  store i32 5, ptr getelementptr inbounds nuw (i8, ptr @main.slice3, i32 8), align 4
+  store i32 5, ptr getelementptr inbounds (i8, ptr @main.slice3, i32 4), align 4
+  store i32 5, ptr getelementptr inbounds (i8, ptr @main.slice3, i32 8), align 4
   ret void
 }
 
@@ -127,7 +127,7 @@ entry:
   %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
+  %.repack1 = getelementptr inbounds i8, ptr %0, i32 8
   store double %v.i, ptr %.repack1, align 8
   %1 = insertvalue %runtime._interface { ptr @"reflect/types.type:basic:complex128", ptr undef }, ptr %0, 1
   call void @runtime.trackPointer(ptr nonnull @"reflect/types.type:basic:complex128", ptr nonnull %stackalloc, ptr undef) #3
@@ -135,7 +135,7 @@ entry:
   ret %runtime._interface %1
 }
 
-attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
 attributes #3 = { nounwind }

compiler/testdata/go1.20.ll

@@ -1,6 +1,6 @@
 ; ModuleID = 'go1.20.go'
 source_filename = "go1.20.go"
-target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
+target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"
 target triple = "wasm32-unknown-wasi"
 
 %runtime._string = type { ptr, i32 }
@@ -57,7 +57,7 @@ entry:
   ret ptr %s.data
 }
 
-attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
 attributes #3 = { nounwind }

compiler/testdata/go1.21.ll

@@ -1,6 +1,6 @@
 ; ModuleID = 'go1.21.go'
 source_filename = "go1.21.go"
-target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
+target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"
 target triple = "wasm32-unknown-wasi"
 
 %runtime._string = type { ptr, i32 }
@@ -86,7 +86,7 @@ entry:
   %stackalloc = alloca i8, align 1
   %4 = call i1 @runtime.stringLess(ptr %a.data, i32 %a.len, ptr %b.data, i32 %b.len, ptr undef) #5
   %5 = select i1 %4, %runtime._string %1, %runtime._string %3
-  %6 = select i1 %4, ptr %a.data, ptr %b.data
+  %6 = extractvalue %runtime._string %5, 0
   call void @runtime.trackPointer(ptr %6, ptr nonnull %stackalloc, ptr undef) #5
   ret %runtime._string %5
 }
@@ -125,7 +125,7 @@ entry:
   %stackalloc = alloca i8, align 1
   %4 = call i1 @runtime.stringLess(ptr %b.data, i32 %b.len, ptr %a.data, i32 %a.len, ptr undef) #5
   %5 = select i1 %4, %runtime._string %1, %runtime._string %3
-  %6 = select i1 %4, ptr %a.data, ptr %b.data
+  %6 = extractvalue %runtime._string %5, 0
   call void @runtime.trackPointer(ptr %6, ptr nonnull %stackalloc, ptr undef) #5
   ret %runtime._string %5
 }
@@ -171,9 +171,9 @@ declare i32 @llvm.smax.i32(i32, i32) #4
 ; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
 declare i32 @llvm.umax.i32(i32, i32) #4
 
-attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
 attributes #3 = { nocallback nofree nounwind willreturn memory(argmem: write) }
 attributes #4 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
 attributes #5 = { nounwind }

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

@@ -65,7 +65,7 @@ entry:
   store i32 3, ptr %n, align 4
   %0 = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr null, ptr undef) #9
   store i32 5, ptr %0, align 4
-  %1 = getelementptr inbounds nuw i8, ptr %0, i32 4
+  %1 = getelementptr inbounds i8, ptr %0, i32 4
   store ptr %n, ptr %1, align 4
   %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (ptr @"main.closureFunctionGoroutine$1$gowrapper" to i32), ptr undef) #9
   call void @"internal/task.start"(i32 ptrtoint (ptr @"main.closureFunctionGoroutine$1$gowrapper" to i32), ptr nonnull %0, i32 %stacksize, ptr undef) #9
@@ -87,7 +87,7 @@ entry:
 define linkonce_odr void @"main.closureFunctionGoroutine$1$gowrapper"(ptr %0) unnamed_addr #5 {
 entry:
   %1 = load i32, ptr %0, align 4
-  %2 = getelementptr inbounds nuw i8, ptr %0, i32 4
+  %2 = getelementptr inbounds i8, ptr %0, i32 4
   %3 = load ptr, ptr %2, align 4
   call void @"main.closureFunctionGoroutine$1"(i32 %1, ptr %3)
   ret void
@@ -104,9 +104,9 @@ define hidden void @main.funcGoroutine(ptr %fn.context, ptr %fn.funcptr, ptr %co
 entry:
   %0 = call align 4 dereferenceable(12) ptr @runtime.alloc(i32 12, ptr null, ptr undef) #9
   store i32 5, ptr %0, align 4
-  %1 = getelementptr inbounds nuw i8, ptr %0, i32 4
+  %1 = getelementptr inbounds i8, ptr %0, i32 4
   store ptr %fn.context, ptr %1, align 4
-  %2 = getelementptr inbounds nuw i8, ptr %0, i32 8
+  %2 = getelementptr inbounds i8, ptr %0, i32 8
   store ptr %fn.funcptr, ptr %2, align 4
   %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (ptr @main.funcGoroutine.gowrapper to i32), ptr undef) #9
   call void @"internal/task.start"(i32 ptrtoint (ptr @main.funcGoroutine.gowrapper to i32), ptr nonnull %0, i32 %stacksize, ptr undef) #9
@@ -117,9 +117,9 @@ entry:
 define linkonce_odr void @main.funcGoroutine.gowrapper(ptr %0) unnamed_addr #6 {
 entry:
   %1 = load i32, ptr %0, align 4
-  %2 = getelementptr inbounds nuw i8, ptr %0, i32 4
+  %2 = getelementptr inbounds i8, ptr %0, i32 4
   %3 = load ptr, ptr %2, align 4
-  %4 = getelementptr inbounds nuw i8, ptr %0, i32 8
+  %4 = getelementptr inbounds i8, ptr %0, i32 8
   %5 = load ptr, ptr %4, align 4
   call void %5(i32 %1, ptr %3) #9
   ret void
@@ -154,11 +154,11 @@ define hidden void @main.startInterfaceMethod(ptr %itf.typecode, ptr %itf.value,
 entry:
   %0 = call align 4 dereferenceable(16) ptr @runtime.alloc(i32 16, ptr null, ptr undef) #9
   store ptr %itf.value, ptr %0, align 4
-  %1 = getelementptr inbounds nuw i8, ptr %0, i32 4
+  %1 = getelementptr inbounds i8, ptr %0, i32 4
   store ptr @"main$string", ptr %1, align 4
-  %2 = getelementptr inbounds nuw i8, ptr %0, i32 8
+  %2 = getelementptr inbounds i8, ptr %0, i32 8
   store i32 4, ptr %2, align 4
-  %3 = getelementptr inbounds nuw i8, ptr %0, i32 12
+  %3 = getelementptr inbounds i8, ptr %0, i32 12
   store ptr %itf.typecode, ptr %3, align 4
   %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (ptr @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper" to i32), ptr undef) #9
   call void @"internal/task.start"(i32 ptrtoint (ptr @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper" to i32), ptr nonnull %0, i32 %stacksize, ptr undef) #9
@@ -171,11 +171,11 @@ declare void @"interface:{Print:func:{basic:string}{}}.Print$invoke"(ptr, ptr, i
 define linkonce_odr void @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper"(ptr %0) unnamed_addr #8 {
 entry:
   %1 = load ptr, ptr %0, align 4
-  %2 = getelementptr inbounds nuw i8, ptr %0, i32 4
+  %2 = getelementptr inbounds i8, ptr %0, i32 4
   %3 = load ptr, ptr %2, align 4
-  %4 = getelementptr inbounds nuw i8, ptr %0, i32 8
+  %4 = getelementptr inbounds i8, ptr %0, i32 8
   %5 = load i32, ptr %4, align 4
-  %6 = getelementptr inbounds nuw i8, ptr %0, i32 12
+  %6 = getelementptr inbounds i8, ptr %0, i32 12
   %7 = load ptr, ptr %6, align 4
   call void @"interface:{Print:func:{basic:string}{}}.Print$invoke"(ptr %1, ptr %3, i32 %5, ptr %7, ptr undef) #9
   ret void

compiler/testdata/goroutine-wasm-asyncify.ll

@@ -1,6 +1,6 @@
 ; ModuleID = 'goroutine.go'
 source_filename = "goroutine.go"
-target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
+target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"
 target triple = "wasm32-unknown-wasi"
 
 @"main$string" = internal unnamed_addr constant [4 x i8] c"test", align 1
@@ -72,7 +72,7 @@ entry:
   %0 = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr null, ptr undef) #9
   call void @runtime.trackPointer(ptr nonnull %0, ptr nonnull %stackalloc, ptr undef) #9
   store i32 5, ptr %0, align 4
-  %1 = getelementptr inbounds nuw i8, ptr %0, i32 4
+  %1 = getelementptr inbounds i8, ptr %0, i32 4
   store ptr %n, ptr %1, align 4
   call void @"internal/task.start"(i32 ptrtoint (ptr @"main.closureFunctionGoroutine$1$gowrapper" to i32), ptr nonnull %0, i32 65536, ptr undef) #9
   %2 = load i32, ptr %n, align 4
@@ -93,7 +93,7 @@ entry:
 define linkonce_odr void @"main.closureFunctionGoroutine$1$gowrapper"(ptr %0) unnamed_addr #5 {
 entry:
   %1 = load i32, ptr %0, align 4
-  %2 = getelementptr inbounds nuw i8, ptr %0, i32 4
+  %2 = getelementptr inbounds i8, ptr %0, i32 4
   %3 = load ptr, ptr %2, align 4
   call void @"main.closureFunctionGoroutine$1"(i32 %1, ptr %3)
   call void @runtime.deadlock(ptr undef) #9
@@ -113,9 +113,9 @@ entry:
   %0 = call align 4 dereferenceable(12) ptr @runtime.alloc(i32 12, ptr null, ptr undef) #9
   call void @runtime.trackPointer(ptr nonnull %0, ptr nonnull %stackalloc, ptr undef) #9
   store i32 5, ptr %0, align 4
-  %1 = getelementptr inbounds nuw i8, ptr %0, i32 4
+  %1 = getelementptr inbounds i8, ptr %0, i32 4
   store ptr %fn.context, ptr %1, align 4
-  %2 = getelementptr inbounds nuw i8, ptr %0, i32 8
+  %2 = getelementptr inbounds i8, ptr %0, i32 8
   store ptr %fn.funcptr, ptr %2, align 4
   call void @"internal/task.start"(i32 ptrtoint (ptr @main.funcGoroutine.gowrapper to i32), ptr nonnull %0, i32 65536, ptr undef) #9
   ret void
@@ -125,9 +125,9 @@ entry:
 define linkonce_odr void @main.funcGoroutine.gowrapper(ptr %0) unnamed_addr #6 {
 entry:
   %1 = load i32, ptr %0, align 4
-  %2 = getelementptr inbounds nuw i8, ptr %0, i32 4
+  %2 = getelementptr inbounds i8, ptr %0, i32 4
   %3 = load ptr, ptr %2, align 4
-  %4 = getelementptr inbounds nuw i8, ptr %0, i32 8
+  %4 = getelementptr inbounds i8, ptr %0, i32 8
   %5 = load ptr, ptr %4, align 4
   call void %5(i32 %1, ptr %3) #9
   call void @runtime.deadlock(ptr undef) #9
@@ -165,11 +165,11 @@ entry:
   %0 = call align 4 dereferenceable(16) ptr @runtime.alloc(i32 16, ptr null, ptr undef) #9
   call void @runtime.trackPointer(ptr nonnull %0, ptr nonnull %stackalloc, ptr undef) #9
   store ptr %itf.value, ptr %0, align 4
-  %1 = getelementptr inbounds nuw i8, ptr %0, i32 4
+  %1 = getelementptr inbounds i8, ptr %0, i32 4
   store ptr @"main$string", ptr %1, align 4
-  %2 = getelementptr inbounds nuw i8, ptr %0, i32 8
+  %2 = getelementptr inbounds i8, ptr %0, i32 8
   store i32 4, ptr %2, align 4
-  %3 = getelementptr inbounds nuw i8, ptr %0, i32 12
+  %3 = getelementptr inbounds i8, ptr %0, i32 12
   store ptr %itf.typecode, ptr %3, align 4
   call void @"internal/task.start"(i32 ptrtoint (ptr @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper" to i32), ptr nonnull %0, i32 65536, ptr undef) #9
   ret void
@@ -181,24 +181,24 @@ declare void @"interface:{Print:func:{basic:string}{}}.Print$invoke"(ptr, ptr, i
 define linkonce_odr void @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper"(ptr %0) unnamed_addr #8 {
 entry:
   %1 = load ptr, ptr %0, align 4
-  %2 = getelementptr inbounds nuw i8, ptr %0, i32 4
+  %2 = getelementptr inbounds i8, ptr %0, i32 4
   %3 = load ptr, ptr %2, align 4
-  %4 = getelementptr inbounds nuw i8, ptr %0, i32 8
+  %4 = getelementptr inbounds i8, ptr %0, i32 8
   %5 = load i32, ptr %4, align 4
-  %6 = getelementptr inbounds nuw i8, ptr %0, i32 12
+  %6 = getelementptr inbounds i8, ptr %0, i32 12
   %7 = load ptr, ptr %6, align 4
   call void @"interface:{Print:func:{basic:string}{}}.Print$invoke"(ptr %1, ptr %3, i32 %5, ptr %7, ptr undef) #9
   call void @runtime.deadlock(ptr undef) #9
   unreachable
 }
 
-attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #3 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-gowrapper"="main.regularFunction" }
-attributes #4 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-gowrapper"="main.inlineFunctionGoroutine$1" }
-attributes #5 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-gowrapper"="main.closureFunctionGoroutine$1" }
-attributes #6 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-gowrapper" }
-attributes #7 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-invoke"="reflect/methods.Print(string)" "tinygo-methods"="reflect/methods.Print(string)" }
-attributes #8 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-gowrapper"="interface:{Print:func:{basic:string}{}}.Print$invoke" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #3 = { nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-gowrapper"="main.regularFunction" }
+attributes #4 = { nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-gowrapper"="main.inlineFunctionGoroutine$1" }
+attributes #5 = { nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-gowrapper"="main.closureFunctionGoroutine$1" }
+attributes #6 = { nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-gowrapper" }
+attributes #7 = { "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-invoke"="reflect/methods.Print(string)" "tinygo-methods"="reflect/methods.Print(string)" }
+attributes #8 = { nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-gowrapper"="interface:{Print:func:{basic:string}{}}.Print$invoke" }
 attributes #9 = { nounwind }

compiler/testdata/interface.ll

@@ -1,6 +1,6 @@
 ; ModuleID = 'interface.go'
 source_filename = "interface.go"
-target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
+target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"
 target triple = "wasm32-unknown-wasi"
 
 %runtime._interface = type { ptr, ptr }
@@ -130,11 +130,11 @@ entry:
 
 declare %runtime._string @"interface:{Error:func:{}{basic:string}}.Error$invoke"(ptr, ptr, ptr) #6
 
-attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #3 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-methods"="reflect/methods.Error() string" }
-attributes #4 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-methods"="reflect/methods.String() string" }
-attributes #5 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-invoke"="main.$methods.foo(int) uint8" "tinygo-methods"="reflect/methods.String() string; main.$methods.foo(int) uint8" }
-attributes #6 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-invoke"="reflect/methods.Error() string" "tinygo-methods"="reflect/methods.Error() string" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #3 = { "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-methods"="reflect/methods.Error() string" }
+attributes #4 = { "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-methods"="reflect/methods.String() string" }
+attributes #5 = { "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-invoke"="main.$methods.foo(int) uint8" "tinygo-methods"="reflect/methods.String() string; main.$methods.foo(int) uint8" }
+attributes #6 = { "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "tinygo-invoke"="reflect/methods.Error() string" "tinygo-methods"="reflect/methods.Error() string" }
 attributes #7 = { nounwind }

compiler/testdata/pointer.ll

@@ -1,6 +1,6 @@
 ; ModuleID = 'pointer.go'
 source_filename = "pointer.go"
-target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
+target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"
 target triple = "wasm32-unknown-wasi"
 
 ; Function Attrs: allockind("alloc,zeroed") allocsize(0)
@@ -44,7 +44,7 @@ entry:
   ret ptr %x
 }
 
-attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
 attributes #3 = { nounwind }

compiler/testdata/pragma.ll

@@ -1,6 +1,6 @@
 ; ModuleID = 'pragma.go'
 source_filename = "pragma.go"
-target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
+target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"
 target triple = "wasm32-unknown-wasi"
 
 @extern_global = external global [0 x i8], align 1
@@ -93,13 +93,13 @@ entry:
   ret void
 }
 
-attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #3 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "wasm-export-name"="extern_func" }
-attributes #4 = { inlinehint nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #5 = { noinline nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #6 = { noinline nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "wasm-export-name"="exportedFunctionInSection" }
-attributes #7 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "wasm-import-module"="modulename" "wasm-import-name"="import1" }
-attributes #8 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "wasm-import-module"="foobar" "wasm-import-name"="imported" }
-attributes #9 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "wasm-export-name"="exported" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #3 = { nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "wasm-export-name"="extern_func" }
+attributes #4 = { inlinehint nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #5 = { noinline nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #6 = { noinline nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "wasm-export-name"="exportedFunctionInSection" }
+attributes #7 = { "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "wasm-import-module"="modulename" "wasm-import-name"="import1" }
+attributes #8 = { "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "wasm-import-module"="foobar" "wasm-import-name"="imported" }
+attributes #9 = { nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" "wasm-export-name"="exported" }

compiler/testdata/slice.ll

@@ -1,6 +1,6 @@
 ; ModuleID = 'slice.go'
 source_filename = "slice.go"
-target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
+target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"
 target triple = "wasm32-unknown-wasi"
 
 ; Function Attrs: allockind("alloc,zeroed") allocsize(0)
@@ -51,9 +51,9 @@ entry:
   %varargs = call align 4 dereferenceable(12) ptr @runtime.alloc(i32 12, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #3
   call void @runtime.trackPointer(ptr nonnull %varargs, ptr nonnull %stackalloc, ptr undef) #3
   store i32 1, ptr %varargs, align 4
-  %0 = getelementptr inbounds nuw i8, ptr %varargs, i32 4
+  %0 = getelementptr inbounds i8, ptr %varargs, i32 4
   store i32 2, ptr %0, align 4
-  %1 = getelementptr inbounds nuw i8, ptr %varargs, i32 8
+  %1 = getelementptr inbounds i8, ptr %varargs, i32 8
   store i32 3, ptr %1, align 4
   %append.new = call { ptr, i32, i32 } @runtime.sliceAppend(ptr %ints.data, ptr nonnull %varargs, i32 %ints.len, i32 %ints.cap, i32 3, i32 4, ptr undef) #3
   %append.newPtr = extractvalue { ptr, i32, i32 } %append.new, 0
@@ -322,7 +322,7 @@ unsafe.Slice.throw:                               ; preds = %entry
   unreachable
 }
 
-attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
 attributes #3 = { nounwind }

compiler/testdata/string.ll

@@ -1,6 +1,6 @@
 ; ModuleID = 'string.go'
 source_filename = "string.go"
-target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
+target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"
 target triple = "wasm32-unknown-wasi"
 
 %runtime._string = type { ptr, i32 }
@@ -84,11 +84,11 @@ declare i1 @runtime.stringLess(ptr, i32, ptr, i32, ptr) #1
 define hidden i8 @main.stringLookup(ptr %s.data, i32 %s.len, i8 %x, ptr %context) unnamed_addr #2 {
 entry:
   %0 = zext i8 %x to i32
-  %.not = icmp ugt i32 %s.len, %0
+  %.not = icmp ult i32 %0, %s.len
   br i1 %.not, label %lookup.next, label %lookup.throw
 
 lookup.next:                                      ; preds = %entry
-  %1 = getelementptr inbounds nuw i8, ptr %s.data, i32 %0
+  %1 = getelementptr inbounds i8, ptr %s.data, i32 %0
   %2 = load i8, ptr %1, align 1
   ret i8 %2
 
@@ -97,7 +97,7 @@ lookup.throw:                                     ; preds = %entry
   unreachable
 }
 
-attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
 attributes #3 = { nounwind }

compiler/testdata/zeromap.ll

@@ -1,6 +1,6 @@
 ; ModuleID = 'zeromap.go'
 source_filename = "zeromap.go"
-target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
+target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"
 target triple = "wasm32-unknown-wasi"
 
 %main.hasPadding = type { i1, i32, i1 }
@@ -27,9 +27,9 @@ entry:
   call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %hashmap.value)
   call void @llvm.lifetime.start.p0(i64 12, ptr nonnull %hashmap.key)
   store %main.hasPadding %2, ptr %hashmap.key, align 4
-  %3 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 1
+  %3 = getelementptr inbounds i8, ptr %hashmap.key, i32 1
   call void @runtime.memzero(ptr nonnull %3, i32 3, ptr undef) #5
-  %4 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 9
+  %4 = getelementptr inbounds i8, ptr %hashmap.key, i32 9
   call void @runtime.memzero(ptr nonnull %4, i32 3, ptr undef) #5
   %5 = call i1 @runtime.hashmapBinaryGet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, i32 4, ptr undef) #5
   call void @llvm.lifetime.end.p0(i64 12, ptr nonnull %hashmap.key)
@@ -60,9 +60,9 @@ entry:
   store i32 5, ptr %hashmap.value, align 4
   call void @llvm.lifetime.start.p0(i64 12, ptr nonnull %hashmap.key)
   store %main.hasPadding %2, ptr %hashmap.key, align 4
-  %3 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 1
+  %3 = getelementptr inbounds i8, ptr %hashmap.key, i32 1
   call void @runtime.memzero(ptr nonnull %3, i32 3, ptr undef) #5
-  %4 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 9
+  %4 = getelementptr inbounds i8, ptr %hashmap.key, i32 9
   call void @runtime.memzero(ptr nonnull %4, i32 3, ptr undef) #5
   call void @runtime.hashmapBinarySet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, ptr undef) #5
   call void @llvm.lifetime.end.p0(i64 12, ptr nonnull %hashmap.key)
@@ -81,16 +81,16 @@ entry:
   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
+  %hashmap.key.repack1 = getelementptr inbounds 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 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 1
+  %0 = getelementptr inbounds i8, ptr %hashmap.key, i32 1
   call void @runtime.memzero(ptr nonnull %0, i32 3, ptr undef) #5
-  %1 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 9
+  %1 = getelementptr inbounds i8, ptr %hashmap.key, i32 9
   call void @runtime.memzero(ptr nonnull %1, i32 3, ptr undef) #5
-  %2 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 13
+  %2 = getelementptr inbounds i8, ptr %hashmap.key, i32 13
   call void @runtime.memzero(ptr nonnull %2, i32 3, ptr undef) #5
-  %3 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 21
+  %3 = getelementptr inbounds i8, ptr %hashmap.key, i32 21
   call void @runtime.memzero(ptr nonnull %3, i32 3, ptr undef) #5
   %4 = call i1 @runtime.hashmapBinaryGet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, i32 4, ptr undef) #5
   call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %hashmap.key)
@@ -109,16 +109,16 @@ entry:
   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
+  %hashmap.key.repack1 = getelementptr inbounds 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 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 1
+  %0 = getelementptr inbounds i8, ptr %hashmap.key, i32 1
   call void @runtime.memzero(ptr nonnull %0, i32 3, ptr undef) #5
-  %1 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 9
+  %1 = getelementptr inbounds i8, ptr %hashmap.key, i32 9
   call void @runtime.memzero(ptr nonnull %1, i32 3, ptr undef) #5
-  %2 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 13
+  %2 = getelementptr inbounds i8, ptr %hashmap.key, i32 13
   call void @runtime.memzero(ptr nonnull %2, i32 3, ptr undef) #5
-  %3 = getelementptr inbounds nuw i8, ptr %hashmap.key, i32 21
+  %3 = getelementptr inbounds i8, ptr %hashmap.key, i32 21
   call void @runtime.memzero(ptr nonnull %3, i32 3, ptr undef) #5
   call void @runtime.hashmapBinarySet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, ptr undef) #5
   call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %hashmap.key)
@@ -132,9 +132,9 @@ entry:
   ret void
 }
 
-attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
-attributes #3 = { noinline nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #1 = { "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #2 = { nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
+attributes #3 = { noinline nounwind "target-features"="+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
 attributes #4 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
 attributes #5 = { nounwind }

diagnostics/diagnostics.go

@@ -10,7 +10,6 @@ import (
 	"go/types"
 	"io"
 	"path/filepath"
-	"reflect"
 	"sort"
 	"strings"
 
@@ -24,11 +23,6 @@ import (
 type Diagnostic struct {
 	Pos token.Position
 	Msg string
-
-	// Start and end position, if available. For many errors these positions are
-	// not available, but for some they are.
-	StartPos token.Position
-	EndPos   token.Position
 }
 
 // One or multiple errors of a particular package.
@@ -120,22 +114,12 @@ func createPackageDiagnostic(err error) PackageDiagnostic {
 func createDiagnostics(err error) []Diagnostic {
 	switch err := err.(type) {
 	case types.Error:
-		diag := Diagnostic{
-			Pos: err.Fset.Position(err.Pos),
-			Msg: err.Msg,
+		return []Diagnostic{
+			{
+				Pos: err.Fset.Position(err.Pos),
+				Msg: err.Msg,
+			},
 		}
-		// There is a special unexported API since Go 1.16 that provides the
-		// range (start and end position) where the type error exists.
-		// There is no promise of backwards compatibility in future Go versions
-		// so we have to be extra careful here to be resilient.
-		v := reflect.ValueOf(err)
-		start := v.FieldByName("go116start")
-		end := v.FieldByName("go116end")
-		if start.IsValid() && end.IsValid() && start.Int() != end.Int() {
-			diag.StartPos = err.Fset.Position(token.Pos(start.Int()))
-			diag.EndPos = err.Fset.Position(token.Pos(end.Int()))
-		}
-		return []Diagnostic{diag}
 	case scanner.Error:
 		return []Diagnostic{
 			{
@@ -204,29 +188,25 @@ func (diag Diagnostic) WriteTo(w io.Writer, wd string) {
 		fmt.Fprintln(w, diag.Msg)
 		return
 	}
-	pos := RelativePosition(diag.Pos, wd)
+	pos := diag.Pos // make a copy
+	if !strings.HasPrefix(pos.Filename, filepath.Join(goenv.Get("GOROOT"), "src")) && !strings.HasPrefix(pos.Filename, filepath.Join(goenv.Get("TINYGOROOT"), "src")) {
+		// This file is not from the standard library (either the GOROOT or the
+		// TINYGOROOT). Make the path relative, for easier reading.  Ignore any
+		// errors in the process (falling back to the absolute path).
+		pos.Filename = tryToMakePathRelative(pos.Filename, wd)
+	}
 	fmt.Fprintf(w, "%s: %s\n", pos, diag.Msg)
 }
 
-// Convert the position in pos (assumed to have an absolute path) into a
-// relative path if possible. Paths inside GOROOT/TINYGOROOT will remain
-// absolute.
-func RelativePosition(pos token.Position, wd string) token.Position {
-	// Check whether we even have a working directory.
+// try to make the path relative to the current working directory. If any error
+// occurs, this error is ignored and the absolute path is returned instead.
+func tryToMakePathRelative(dir, wd string) string {
 	if wd == "" {
-		return pos
+		return dir // working directory not found
 	}
-
-	// Paths inside GOROOT should be printed in full.
-	if strings.HasPrefix(pos.Filename, filepath.Join(goenv.Get("GOROOT"), "src")) || strings.HasPrefix(pos.Filename, filepath.Join(goenv.Get("TINYGOROOT"), "src")) {
-		return pos
+	relpath, err := filepath.Rel(wd, dir)
+	if err != nil {
+		return dir
 	}
-
-	// Make the path relative, for easier reading. Ignore any errors in the
-	// process (falling back to the absolute path).
-	relpath, err := filepath.Rel(wd, pos.Filename)
-	if err == nil {
-		pos.Filename = relpath
-	}
-	return pos
+	return relpath
 }

errors_test.go

@@ -8,7 +8,6 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/tinygo-org/tinygo/builder"
 	"github.com/tinygo-org/tinygo/compileopts"
 	"github.com/tinygo-org/tinygo/diagnostics"
 )
@@ -65,11 +64,7 @@ func testErrorMessages(t *testing.T, filename string, options *compileopts.Optio
 
 	// Try to build a binary (this should fail with an error).
 	tmpdir := t.TempDir()
-	config, err := builder.NewConfig(options)
-	if err != nil {
-		t.Fatal("expected to get a compiler error")
-	}
-	err = Build(filename, tmpdir+"/out", config)
+	err := Build(filename, tmpdir+"/out", options)
 	if err == nil {
 		t.Fatal("expected to get a compiler error")
 	}

flake.lock

@@ -20,16 +20,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1747953325,
-        "narHash": "sha256-y2ZtlIlNTuVJUZCqzZAhIw5rrKP4DOSklev6c8PyCkQ=",
+        "lastModified": 1728500571,
+        "narHash": "sha256-dOymOQ3AfNI4Z337yEwHGohrVQb4yPODCW9MDUyAc4w=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "55d1f923c480dadce40f5231feb472e81b0bab48",
+        "rev": "d51c28603def282a24fa034bcb007e2bcb5b5dd0",
         "type": "github"
       },
       "original": {
         "id": "nixpkgs",
-        "ref": "nixos-25.05",
+        "ref": "nixos-24.05",
         "type": "indirect"
       }
     },

flake.nix

@@ -34,7 +34,7 @@
   inputs = {
     # Use a recent stable release, but fix the version to make it reproducible.
     # This version should be updated from time to time.
-    nixpkgs.url = "nixpkgs/nixos-25.05";
+    nixpkgs.url = "nixpkgs/nixos-24.05";
     flake-utils.url = "github:numtide/flake-utils";
   };
   outputs = { self, nixpkgs, flake-utils }:
@@ -48,11 +48,11 @@
           buildInputs = [
             # These dependencies are required for building tinygo (go install).
             go
-            llvmPackages_20.llvm
-            llvmPackages_20.libclang
+            llvmPackages_18.llvm
+            llvmPackages_18.libclang
             # Additional dependencies needed at runtime, for building and/or
             # flashing.
-            llvmPackages_20.lld
+            llvmPackages_18.lld
             avrdude
             binaryen
             # Additional dependencies needed for on-chip debugging.
@@ -68,7 +68,7 @@
             export MD5SUM=md5sum
 
             # Ugly hack to make the Clang resources directory available.
-            export GOFLAGS="\"-ldflags=-X github.com/tinygo-org/tinygo/goenv.clangResourceDir=${llvmPackages_20.clang.cc.lib}/lib/clang/20\" -tags=llvm20"
+            export GOFLAGS="\"-ldflags=-X github.com/tinygo-org/tinygo/goenv.clangResourceDir=${llvmPackages_18.clang.cc.lib}/lib/clang/18\" -tags=llvm18"
           '';
         };
       }

go.mod

@@ -1,10 +1,12 @@
 module github.com/tinygo-org/tinygo
 
-go 1.22.0
+go 1.19
 
 require (
-	github.com/aykevl/go-wasm v0.0.2-0.20250317121156-42b86c494139
+	github.com/aykevl/go-wasm v0.0.2-0.20240825160117-b76c3f9f0982
 	github.com/blakesmith/ar v0.0.0-20150311145944-8bd4349a67f2
+	github.com/chromedp/cdproto v0.0.0-20220113222801-0725d94bb6ee
+	github.com/chromedp/chromedp v0.7.6
 	github.com/gofrs/flock v0.8.1
 	github.com/google/shlex v0.0.0-20181106134648-c34317bd91bf
 	github.com/inhies/go-bytesize v0.0.0-20220417184213-4913239db9cf
@@ -14,16 +16,22 @@ require (
 	github.com/sigurn/crc16 v0.0.0-20211026045750-20ab5afb07e3
 	github.com/tetratelabs/wazero v1.6.0
 	go.bug.st/serial v1.6.0
-	golang.org/x/net v0.35.0
-	golang.org/x/sys v0.30.0
-	golang.org/x/tools v0.30.0
+	golang.org/x/net v0.26.0
+	golang.org/x/sys v0.21.0
+	golang.org/x/tools v0.22.1-0.20240621165957-db513b091504
 	gopkg.in/yaml.v2 v2.4.0
-	tinygo.org/x/go-llvm v0.0.0-20250422114502-b8f170971e74
+	tinygo.org/x/go-llvm v0.0.0-20250119132755-9dca92dfb4f9
 )
 
 require (
+	github.com/chromedp/sysutil v1.0.0 // indirect
 	github.com/creack/goselect v0.1.2 // indirect
+	github.com/gobwas/httphead v0.1.0 // indirect
+	github.com/gobwas/pool v0.2.1 // indirect
+	github.com/gobwas/ws v1.1.0 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/stretchr/testify v1.8.4 // indirect
-	golang.org/x/text v0.22.0 // indirect
+	golang.org/x/text v0.16.0 // indirect
 )

go.sum

@@ -1,17 +1,33 @@
-github.com/aykevl/go-wasm v0.0.2-0.20250317121156-42b86c494139 h1:2O/WuAt8J5id3khcAtVB90czG80m+v0sfkLE07GrCVg=
-github.com/aykevl/go-wasm v0.0.2-0.20250317121156-42b86c494139/go.mod h1:7sXyiaA0WtSogCu67R2252fQpVmJMh9JWJ9ddtGkpWw=
+github.com/aykevl/go-wasm v0.0.2-0.20240825160117-b76c3f9f0982 h1:cD7QfvrJdYmBw2tFP/VyKPT8ZESlcrwSwo7SvH9Y4dc=
+github.com/aykevl/go-wasm v0.0.2-0.20240825160117-b76c3f9f0982/go.mod h1:7sXyiaA0WtSogCu67R2252fQpVmJMh9JWJ9ddtGkpWw=
 github.com/blakesmith/ar v0.0.0-20150311145944-8bd4349a67f2 h1:oMCHnXa6CCCafdPDbMh/lWRhRByN0VFLvv+g+ayx1SI=
 github.com/blakesmith/ar v0.0.0-20150311145944-8bd4349a67f2/go.mod h1:PkYb9DJNAwrSvRx5DYA+gUcOIgTGVMNkfSCbZM8cWpI=
+github.com/chromedp/cdproto v0.0.0-20211126220118-81fa0469ad77/go.mod h1:At5TxYYdxkbQL0TSefRjhLE3Q0lgvqKKMSFUglJ7i1U=
+github.com/chromedp/cdproto v0.0.0-20220113222801-0725d94bb6ee h1:+SFdIVfQpG0s0DHYzou0kgfE0n0ZjKPwbiRJsXrZegU=
+github.com/chromedp/cdproto v0.0.0-20220113222801-0725d94bb6ee/go.mod h1:At5TxYYdxkbQL0TSefRjhLE3Q0lgvqKKMSFUglJ7i1U=
+github.com/chromedp/chromedp v0.7.6 h1:2juGaktzjwULlsn+DnvIZXFUckEp5xs+GOBroaea+jA=
+github.com/chromedp/chromedp v0.7.6/go.mod h1:ayT4YU/MGAALNfOg9gNrpGSAdnU51PMx+FCeuT1iXzo=
+github.com/chromedp/sysutil v1.0.0 h1:+ZxhTpfpZlmchB58ih/LBHX52ky7w2VhQVKQMucy3Ic=
+github.com/chromedp/sysutil v1.0.0/go.mod h1:kgWmDdq8fTzXYcKIBqIYvRRTnYb9aNS9moAV0xufSww=
 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 v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/gobwas/httphead v0.1.0 h1:exrUm0f4YX0L7EBwZHuCF4GDp8aJfVeBrlLQrs6NqWU=
+github.com/gobwas/httphead v0.1.0/go.mod h1:O/RXo79gxV8G+RqlR/otEwx4Q36zl9rqC5u12GKvMCM=
+github.com/gobwas/pool v0.2.1 h1:xfeeEhW7pwmX8nuLVlqbzVc7udMDrwetjEv+TZIz1og=
+github.com/gobwas/pool v0.2.1/go.mod h1:q8bcK0KcYlCgd9e7WYLm9LpyS+YeLd8JVDW6WezmKEw=
+github.com/gobwas/ws v1.1.0 h1:7RFti/xnNkMJnrK7D1yQ/iCIB5OrrY/54/H930kIbHA=
+github.com/gobwas/ws v1.1.0/go.mod h1:nzvNcVha5eUziGrbxFCo6qFIojQHjJV5cLYIbezhfL0=
 github.com/gofrs/flock v0.8.1 h1:+gYjHKf32LDeiEEFhQaotPbLuUXjY5ZqxKgXy7n59aw=
 github.com/gofrs/flock v0.8.1/go.mod h1:F1TvTiK9OcQqauNUHlbJvyl9Qa1QvF/gOUDKA14jxHU=
 github.com/google/shlex v0.0.0-20181106134648-c34317bd91bf h1:7+FW5aGwISbqUtkfmIpZJGRgNFg2ioYPvFaUxdqpDsg=
 github.com/google/shlex v0.0.0-20181106134648-c34317bd91bf/go.mod h1:RpwtwJQFrIEPstU94h88MWPXP2ektJZ8cZ0YntAmXiE=
 github.com/inhies/go-bytesize v0.0.0-20220417184213-4913239db9cf h1:FtEj8sfIcaaBfAKrE1Cwb61YDtYq9JxChK1c7AKce7s=
 github.com/inhies/go-bytesize v0.0.0-20220417184213-4913239db9cf/go.mod h1:yrqSXGoD/4EKfF26AOGzscPOgTTJcyAwM2rpixWT+t4=
+github.com/josharian/intern v1.0.0 h1:vlS4z54oSdjm0bgjRigI+G1HpF+tI+9rE5LLzOg8HmY=
+github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y=
+github.com/mailru/easyjson v0.7.7 h1:UGYAvKxe3sBsEDzO8ZeWOSlIQfWFlxbzLZe7hwFURr0=
+github.com/mailru/easyjson v0.7.7/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
 github.com/marcinbor85/gohex v0.0.0-20200531091804-343a4b548892 h1:6J+qramlHVLmiBOgRiBOnQkno8uprqG6YFFQTt6uYIw=
 github.com/marcinbor85/gohex v0.0.0-20200531091804-343a4b548892/go.mod h1:Pb6XcsXyropB9LNHhnqaknG/vEwYztLkQzVCHv8sQ3M=
 github.com/mattn/go-colorable v0.1.4/go.mod h1:U0ppj6V5qS13XJ6of8GYAs25YV2eR4EVcfRqFIhoBtE=
@@ -25,8 +41,9 @@ github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D
 github.com/mattn/go-runewidth v0.0.7/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
 github.com/mattn/go-tty v0.0.4 h1:NVikla9X8MN0SQAqCYzpGyXv0jY7MNl3HOWD2dkle7E=
 github.com/mattn/go-tty v0.0.4/go.mod h1:u5GGXBtZU6RQoKV8gY5W6UhMudbR5vXnUe7j3pxse28=
+github.com/orisano/pixelmatch v0.0.0-20210112091706-4fa4c7ba91d5 h1:1SoBaSPudixRecmlHXb/GxmaD3fLMtHIDN13QujwQuc=
+github.com/orisano/pixelmatch v0.0.0-20210112091706-4fa4c7ba91d5/go.mod h1:nZgzbfBr3hhjoZnS66nKrHmduYNpc34ny7RK4z5/HM0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/sigurn/crc16 v0.0.0-20211026045750-20ab5afb07e3 h1:aQKxg3+2p+IFXXg97McgDGT5zcMrQoi0EICZs8Pgchs=
 github.com/sigurn/crc16 v0.0.0-20211026045750-20ab5afb07e3/go.mod h1:9/etS5gpQq9BJsJMWg1wpLbfuSnkm8dPF6FdW2JXVhA=
 github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
@@ -35,28 +52,27 @@ github.com/tetratelabs/wazero v1.6.0 h1:z0H1iikCdP8t+q341xqepY4EWvHEw8Es7tlqiVzl
 github.com/tetratelabs/wazero v1.6.0/go.mod h1:0U0G41+ochRKoPKCJlh0jMg1CHkyfK8kDqiirMmKY8A=
 go.bug.st/serial v1.6.0 h1:mAbRGN4cKE2J5gMwsMHC2KQisdLRQssO9WSM+rbZJ8A=
 go.bug.st/serial v1.6.0/go.mod h1:UABfsluHAiaNI+La2iESysd9Vetq7VRdpxvjx7CmmOE=
-golang.org/x/mod v0.23.0 h1:Zb7khfcRGKk+kqfxFaP5tZqCnDZMjC5VtUBs87Hr6QM=
-golang.org/x/mod v0.23.0/go.mod h1:6SkKJ3Xj0I0BrPOZoBy3bdMptDDU9oJrpohJ3eWZ1fY=
-golang.org/x/net v0.35.0 h1:T5GQRQb2y08kTAByq9L4/bz8cipCdA8FbRTXewonqY8=
-golang.org/x/net v0.35.0/go.mod h1:EglIi67kWsHKlRzzVMUD93VMSWGFOMSZgxFjparz1Qk=
-golang.org/x/sync v0.11.0 h1:GGz8+XQP4FvTTrjZPzNKTMFtSXH80RAzG+5ghFPgK9w=
-golang.org/x/sync v0.11.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/mod v0.18.0 h1:5+9lSbEzPSdWkH32vYPBwEpX8KwDbM52Ud9xBUvNlb0=
+golang.org/x/net v0.26.0 h1:soB7SVo0PWrY4vPW/+ay0jKDNScG2X9wFeYlXIvJsOQ=
+golang.org/x/net v0.26.0/go.mod h1:5YKkiSynbBIh3p6iOc/vibscux0x38BZDkn8sCUPxHE=
+golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
 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 v0.0.0-20201207223542-d4d67f95c62d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20211124211545-fe61309f8881/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.30.0 h1:QjkSwP/36a20jFYWkSue1YwXzLmsV5Gfq7Eiy72C1uc=
-golang.org/x/sys v0.30.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/text v0.22.0 h1:bofq7m3/HAFvbF51jz3Q9wLg3jkvSPuiZu/pD1XwgtM=
-golang.org/x/text v0.22.0/go.mod h1:YRoo4H8PVmsu+E3Ou7cqLVH8oXWIHVoX0jqUWALQhfY=
-golang.org/x/tools v0.30.0 h1:BgcpHewrV5AUp2G9MebG4XPFI1E2W41zU1SaqVA9vJY=
-golang.org/x/tools v0.30.0/go.mod h1:c347cR/OJfw5TI+GfX7RUPNMdDRRbjvYTS0jPyvsVtY=
+golang.org/x/sys v0.21.0 h1:rF+pYz3DAGSQAxAu1CbC7catZg4ebC4UIeIhKxBZvws=
+golang.org/x/sys v0.21.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/text v0.16.0 h1:a94ExnEXNtEwYLGJSIUxnWoxoRz/ZcCsV63ROupILh4=
+golang.org/x/text v0.16.0/go.mod h1:GhwF1Be+LQoKShO3cGOHzqOgRrGaYc9AvblQOmPVHnI=
+golang.org/x/tools v0.22.1-0.20240621165957-db513b091504 h1:MMsD8mMfluf/578+3wrTn22pjI/Xkzm+gPW47SYfspY=
+golang.org/x/tools v0.22.1-0.20240621165957-db513b091504/go.mod h1:aCwcsjqvq7Yqt6TNyX7QMU2enbQ/Gt0bo6krSeEri+c=
 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=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 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/go-llvm v0.0.0-20250422114502-b8f170971e74 h1:ovavgTdIBWCH8YWlcfq9gkpoyT1+IxMKSn+Df27QwE8=
-tinygo.org/x/go-llvm v0.0.0-20250422114502-b8f170971e74/go.mod h1:GFbusT2VTA4I+l4j80b17KFK+6whv69Wtny5U+T8RR0=
+tinygo.org/x/go-llvm v0.0.0-20250119132755-9dca92dfb4f9 h1:rMvEzuCYjyiR+pmdiCVWTQw3L6VqiSIXoL19I3lYufE=
+tinygo.org/x/go-llvm v0.0.0-20250119132755-9dca92dfb4f9/go.mod h1:GFbusT2VTA4I+l4j80b17KFK+6whv69Wtny5U+T8RR0=

goenv/version.go

@@ -10,7 +10,7 @@ import (
 
 // Version of TinyGo.
 // Update this value before release of new version of software.
-const version = "0.40.0-dev"
+const version = "0.38.0-dev"
 
 // Return TinyGo version, either in the form 0.30.0 or as a development version
 // (like 0.30.0-dev-abcd012).

interp/interpreter.go

@@ -364,22 +364,9 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 						continue
 					}
 					nBytes := uint32(n * elemSize)
-					srcObj := mem.get(src.index())
 					dstObj := mem.getWritable(dst.index())
-					if srcObj.buffer == nil || dstObj.buffer == nil {
-						// If the buffer is nil, it means the slice is external.
-						// This can happen for example when copying data out of
-						// a //go:embed slice, which is not available at interp
-						// time.
-						// See: https://github.com/tinygo-org/tinygo/issues/4895
-						err := r.runAtRuntime(fn, inst, locals, &mem, indent)
-						if err != nil {
-							return nil, mem, err
-						}
-						continue
-					}
 					dstBuf := dstObj.buffer.asRawValue(r)
-					srcBuf := srcObj.buffer.asRawValue(r)
+					srcBuf := mem.get(src.index()).buffer.asRawValue(r)
 					copy(dstBuf.buf[dst.offset():dst.offset()+nBytes], srcBuf.buf[src.offset():])
 					dstObj.buffer = dstBuf
 					mem.put(dst.index(), dstObj)
@@ -577,7 +564,7 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 						// runtime instead of at compile time. But we need to
 						// revert any changes made by the call first.
 						if r.debug {
-							fmt.Fprintln(os.Stderr, indent+"!! revert because of error:", callErr.Error())
+							fmt.Fprintln(os.Stderr, indent+"!! revert because of error:", callErr.Err)
 						}
 						callMem.revert()
 						err := r.runAtRuntime(fn, inst, locals, &mem, indent)

interp/testdata/basic.out.ll

@@ -10,7 +10,7 @@ target triple = "x86_64--linux"
 @main.exposedValue2 = local_unnamed_addr global i16 0
 @main.insertedValue = local_unnamed_addr global { i8, i32, { float, { i64, i16 } } } zeroinitializer
 @main.gepArray = local_unnamed_addr global [8 x i8] zeroinitializer
-@main.negativeGEP = global ptr getelementptr inbounds nuw (i8, ptr @main.negativeGEP, i64 2)
+@main.negativeGEP = global ptr getelementptr inbounds (i8, ptr @main.negativeGEP, i64 2)
 
 declare void @runtime.printint64(i64) unnamed_addr
 

interp/testdata/consteval.out.ll

@@ -5,7 +5,7 @@ target triple = "x86_64--linux"
 @ptrToIntResult = local_unnamed_addr global i8 2
 @pointerTagResult = local_unnamed_addr global i64 2
 @someArray = internal global { i16, i8, i8 } zeroinitializer
-@someArrayPointer = local_unnamed_addr global ptr getelementptr inbounds nuw (i8, ptr @someArray, i64 2)
+@someArrayPointer = local_unnamed_addr global ptr getelementptr inbounds (i8, ptr @someArray, i64 2)
 
 define void @runtime.initAll() local_unnamed_addr {
   ret void

interp/testdata/slice-copy.ll

@@ -11,10 +11,6 @@ target triple = "x86_64--linux"
 @main.sliceDstUntaint.buf = internal global [2 x i8] zeroinitializer
 @main.sliceSrcTaint.buf = internal global [2 x i8] c"cd"
 @main.sliceDstTaint.buf = internal global [2 x i8] zeroinitializer
-@main.sliceSrcExternal1.buf = external global [2 x i8]
-@main.sliceDstExternal1.buf = internal global [2 x i8] zeroinitializer
-@main.sliceSrcExternal2.buf = internal global [2 x i8] zeroinitializer
-@main.sliceDstExternal2.buf = external global [2 x i8]
 
 declare i64 @runtime.sliceCopy(ptr %dst, ptr %src, i64 %dstLen, i64 %srcLen, i64 %elemSize) unnamed_addr
 
@@ -62,14 +58,6 @@ entry:
   %sliceDstTaint.val = load i8, ptr getelementptr inbounds (i8, ptr @main.sliceDstTaint.buf, i32 0)
   call void @runtime.printuint8(i8 %sliceDstTaint.val)
 
-  ; print(sliceDstExternal1[0])
-  %sliceDstExternal1.val = load i8, ptr getelementptr inbounds (i8, ptr @main.sliceDstExternal1.buf, i32 0)
-  call void @runtime.printuint8(i8 %sliceDstExternal1.val)
-
-  ; print(sliceDstExternal2[0])
-  %sliceDstExternal2.val = load i8, ptr getelementptr inbounds (i8, ptr @main.sliceDstExternal2.buf, i32 0)
-  call void @runtime.printuint8(i8 %sliceDstExternal2.val)
-
   ret void
 }
 
@@ -114,11 +102,5 @@ entry:
   call void @use(ptr @main.sliceSrcTaint.buf)
   %copy.n4 = call i64 @runtime.sliceCopy(ptr @main.sliceDstTaint.buf, ptr @main.sliceSrcTaint.buf, i64 2, i64 2, i64 1)
 
-  ; Test that copying from or into external buffers works correctly.
-  ; These copy operations must be done at runtime.
-  ; https://github.com/tinygo-org/tinygo/issues/4895
-  %copy.n5 = call i64 @runtime.sliceCopy(ptr @main.sliceDstExternal1.buf, ptr @main.sliceSrcExternal1.buf, i64 2, i64 2, i64 1)
-  %copy.n6 = call i64 @runtime.sliceCopy(ptr @main.sliceDstExternal2.buf, ptr @main.sliceSrcExternal2.buf, i64 2, i64 2, i64 1)
-
   ret void
 }

interp/testdata/slice-copy.out.ll

@@ -3,10 +3,6 @@ target triple = "x86_64--linux"
 
 @main.sliceSrcTaint.buf = internal global [2 x i8] c"cd"
 @main.sliceDstTaint.buf = internal global [2 x i8] zeroinitializer
-@main.sliceSrcExternal1.buf = external global [2 x i8]
-@main.sliceDstExternal1.buf = internal global [2 x i8] zeroinitializer
-@main.sliceSrcExternal2.buf = internal global [2 x i8] zeroinitializer
-@main.sliceDstExternal2.buf = external global [2 x i8]
 
 declare i64 @runtime.sliceCopy(ptr, ptr, i64, i64, i64) unnamed_addr
 
@@ -20,8 +16,6 @@ define void @runtime.initAll() unnamed_addr {
 entry:
   call void @use(ptr @main.sliceSrcTaint.buf)
   %copy.n4 = call i64 @runtime.sliceCopy(ptr @main.sliceDstTaint.buf, ptr @main.sliceSrcTaint.buf, i64 2, i64 2, i64 1)
-  %copy.n5 = call i64 @runtime.sliceCopy(ptr @main.sliceDstExternal1.buf, ptr @main.sliceSrcExternal1.buf, i64 2, i64 2, i64 1)
-  %copy.n6 = call i64 @runtime.sliceCopy(ptr @main.sliceDstExternal2.buf, ptr @main.sliceSrcExternal2.buf, i64 2, i64 2, i64 1)
   ret void
 }
 
@@ -34,9 +28,5 @@ entry:
   call void @runtime.printuint8(i8 97)
   %sliceDstTaint.val = load i8, ptr @main.sliceDstTaint.buf, align 1
   call void @runtime.printuint8(i8 %sliceDstTaint.val)
-  %sliceDstExternal1.val = load i8, ptr @main.sliceDstExternal1.buf, align 1
-  call void @runtime.printuint8(i8 %sliceDstExternal1.val)
-  %sliceDstExternal2.val = load i8, ptr @main.sliceDstExternal2.buf, align 1
-  call void @runtime.printuint8(i8 %sliceDstExternal2.val)
   ret void
 }

loader/goroot.go

@@ -256,6 +256,7 @@ func pathsToOverride(goMinor int, needsSyscallPackage bool) map[string]bool {
 		"reflect/":                    false,
 		"runtime/":                    false,
 		"sync/":                       true,
+		"testing/":                    true,
 		"tinygo/":                     false,
 		"unique/":                     false,
 	}

loader/ssa.go

@@ -8,9 +8,7 @@ import (
 //
 // The program must already be parsed and type-checked with the .Parse() method.
 func (p *Program) LoadSSA() *ssa.Program {
-	// TODO: re-enable SanityCheckFunctions when x/tools is upgraded to
-	// a version with a fix for https://golang.org/issues/73594.
-	prog := ssa.NewProgram(p.fset /*ssa.SanityCheckFunctions|*/, ssa.BareInits|ssa.GlobalDebug|ssa.InstantiateGenerics)
+	prog := ssa.NewProgram(p.fset, ssa.SanityCheckFunctions|ssa.BareInits|ssa.GlobalDebug|ssa.InstantiateGenerics)
 
 	for _, pkg := range p.sorted {
 		prog.CreatePackage(pkg.Pkg, pkg.Files, &pkg.info, true)

main.go

@@ -138,13 +138,27 @@ func printCommand(cmd string, args ...string) {
 }
 
 // Build compiles and links the given package and writes it to outpath.
-func Build(pkgName, outpath string, config *compileopts.Config) error {
+func Build(pkgName, outpath string, options *compileopts.Options) error {
+	config, err := builder.NewConfig(options)
+	if err != nil {
+		return err
+	}
+
+	if options.PrintJSON {
+		b, err := json.MarshalIndent(config, "", "  ")
+		if err != nil {
+			handleCompilerError(err)
+		}
+		fmt.Printf("%s\n", string(b))
+		return nil
+	}
+
 	// Create a temporary directory for intermediary files.
 	tmpdir, err := os.MkdirTemp("", "tinygo")
 	if err != nil {
 		return err
 	}
-	if !config.Options.Work {
+	if !options.Work {
 		defer os.RemoveAll(tmpdir)
 	}
 
@@ -291,8 +305,7 @@ func Test(pkgName string, stdout, stderr io.Writer, options *compileopts.Options
 	})
 
 	if testConfig.CompileOnly {
-		// Return the compiler error, if there is one.
-		return true, err
+		return true, nil
 	}
 
 	importPath := strings.TrimSuffix(result.ImportPath, ".test")
@@ -340,17 +353,8 @@ func dirsToModuleRootAbs(maindir, modroot string) []string {
 	return dirs
 }
 
-// validateOutputFormat checks if the output file extension matches the expected format
-func validateOutputFormat(outpath, expectedExt string) error {
-	actualExt := filepath.Ext(outpath)
-	if actualExt != expectedExt {
-		return fmt.Errorf("output format %s does not match target format %s", actualExt, expectedExt)
-	}
-	return nil
-}
-
 // Flash builds and flashes the built binary to the given serial port.
-func Flash(pkgName, port, outpath string, options *compileopts.Options) error {
+func Flash(pkgName, port string, options *compileopts.Options) error {
 	config, err := builder.NewConfig(options)
 	if err != nil {
 		return err
@@ -399,24 +403,13 @@ func Flash(pkgName, port, outpath string, options *compileopts.Options) error {
 	if !options.Work {
 		defer os.RemoveAll(tmpdir)
 	}
-	// Validate output format before building
-	if outpath != "" {
-		if err := validateOutputFormat(outpath, fileExt); err != nil {
-			return err
-		}
-	}
+
 	// Build the binary.
 	result, err := builder.Build(pkgName, fileExt, tmpdir, config)
 	if err != nil {
 		return err
 	}
 
-	// Save output file if specified (after build, before flashing)
-	if outpath != "" {
-		if err := copyFile(result.Binary, outpath); err != nil {
-			return fmt.Errorf("failed to save output file: %v", err)
-		}
-	}
 	// do we need port reset to put MCU into bootloader mode?
 	if config.Target.PortReset == "true" && flashMethod != "openocd" {
 		port, err := getDefaultPort(port, config.Target.SerialPort)
@@ -1034,50 +1027,15 @@ func findFATMounts(options *compileopts.Options) ([]mountPoint, error) {
 			return nil, fmt.Errorf("could not list mount points: %w", err)
 		}
 		for _, elem := range list {
-			volumePath := filepath.Join("/Volumes", elem.Name())
-			if _, err := os.Stat(volumePath); err != nil {
-				continue
-			}
-
-			cmd := exec.Command("diskutil", "info", volumePath)
-			var out bytes.Buffer
-			cmd.Stdout = &out
-			if err := cmd.Run(); err != nil {
-				continue // skip if diskutil failed
-			}
-
-			diskInfo := map[string]string{}
-			scanner := bufio.NewScanner(&out)
-			for scanner.Scan() {
-				line := scanner.Text()
-				parts := strings.SplitN(line, ":", 2)
-				if len(parts) != 2 {
-					continue
-				}
-				key := strings.TrimSpace(parts[0])
-				value := strings.TrimSpace(parts[1])
-				diskInfo[key] = value
-			}
-			if err := scanner.Err(); err != nil {
-				continue
-			}
-
-			volName, okv := diskInfo["Volume Name"]
-			fsType, okf := diskInfo["File System Personality"]
-			if !okv || !okf {
-				continue
-			}
-
-			// Check if a filesystem type is FAT-based
-			if strings.Contains(strings.ToUpper(fsType), "FAT") {
-				points = append(points, mountPoint{
-					name: volName,
-					path: volumePath,
-				})
-			}
+			// TODO: find a way to check for the filesystem type.
+			// (Only return FAT filesystems).
+			points = append(points, mountPoint{
+				name: elem.Name(),
+				path: filepath.Join("/Volumes", elem.Name()),
+			})
 		}
 		sort.Slice(points, func(i, j int) bool {
-			return points[i].path < points[j].path
+			return points[i].path < points[j].name
 		})
 		return points, nil
 	case "linux":
@@ -1318,11 +1276,6 @@ extension at all.`
 			(https://tinygo.org/docs/reference/microcontrollers/).
 			Examples: "arduino-nano", "d1mini", "xiao".
 
-	-o={filename}:
-			Save the built binary to the specified output file. The file
-			format must match the target's expected format (e.g., .hex,
-			.uf2). Both flashing and saving will be performed.
-
 	-monitor: 
 			Start the serial monitor (see below) immediately after
 			flashing. However, some microcontrollers need a split second
@@ -1443,68 +1396,6 @@ func usage(command string) {
 
 }
 
-// Print diagnostics very similar to the -json flag in Go.
-func printBuildOutput(err error, jsonDiagnostics bool) {
-	if err == nil {
-		return // nothing to report
-	}
-
-	if jsonDiagnostics {
-		workingDir, getwdErr := os.Getwd()
-		if getwdErr != nil {
-			workingDir = ""
-		}
-
-		type jsonDiagnosticOutput struct {
-			ImportPath string
-			Action     string
-			Output     string `json:",omitempty"`
-			StartPos   string `json:",omitempty"` // non-standard
-			EndPos     string `json:",omitempty"` // non-standard
-		}
-
-		for _, diags := range diagnostics.CreateDiagnostics(err) {
-			if diags.ImportPath != "" {
-				output, _ := json.Marshal(jsonDiagnosticOutput{
-					ImportPath: diags.ImportPath,
-					Action:     "build-output",
-					Output:     "# " + diags.ImportPath + "\n",
-				})
-				os.Stdout.Write(append(output, '\n'))
-			}
-			for _, diag := range diags.Diagnostics {
-				w := &bytes.Buffer{}
-				diag.WriteTo(w, workingDir)
-				data := jsonDiagnosticOutput{
-					ImportPath: diags.ImportPath,
-					Action:     "build-output",
-					Output:     w.String(),
-				}
-				if diag.StartPos.IsValid() && diag.EndPos.IsValid() {
-					// Include the non-standard StartPos/EndPos values. These
-					// are useful for the TinyGo Playground to show better error
-					// messages.
-					data.StartPos = diagnostics.RelativePosition(diag.StartPos, workingDir).String()
-					data.EndPos = diagnostics.RelativePosition(diag.EndPos, workingDir).String()
-				}
-				output, _ := json.Marshal(data)
-				os.Stdout.Write(append(output, '\n'))
-			}
-
-			// Emit the "Action":"build-fail" JSON.
-			output, _ := json.Marshal(jsonDiagnosticOutput{
-				ImportPath: diags.ImportPath,
-				Action:     "build-fail",
-			})
-			os.Stdout.Write(append(output, '\n'))
-		}
-		os.Exit(1)
-	}
-
-	// Regular diagnostic handling.
-	handleCompilerError(err)
-}
-
 func handleCompilerError(err error) {
 	if err != nil {
 		wd, getwdErr := os.Getwd()
@@ -1603,7 +1494,7 @@ func main() {
 	opt := flag.String("opt", "z", "optimization level: 0, 1, 2, s, z")
 	gc := flag.String("gc", "", "garbage collector to use (none, leaking, conservative, custom, precise, boehm)")
 	panicStrategy := flag.String("panic", "print", "panic strategy (print, trap)")
-	scheduler := flag.String("scheduler", "", "which scheduler to use (none, tasks, cores, threads, asyncify)")
+	scheduler := flag.String("scheduler", "", "which scheduler to use (none, tasks, asyncify)")
 	serial := flag.String("serial", "", "which serial output to use (none, uart, usb, rtt)")
 	work := flag.Bool("work", false, "print the name of the temporary build directory and do not delete this directory on exit")
 	interpTimeout := flag.Duration("interp-timeout", 180*time.Second, "interp optimization pass timeout")
@@ -1621,7 +1512,6 @@ func main() {
 	printStacks := flag.Bool("print-stacks", false, "print stack sizes of goroutines")
 	printAllocsString := flag.String("print-allocs", "", "regular expression of functions for which heap allocations should be printed")
 	printCommands := flag.Bool("x", false, "Print commands")
-	flagJSON := flag.Bool("json", false, "print output in JSON format")
 	parallelism := flag.Int("p", runtime.GOMAXPROCS(0), "the number of build jobs that can run in parallel")
 	nodebug := flag.Bool("no-debug", false, "strip debug information")
 	nobounds := flag.Bool("nobounds", false, "do not emit bounds checks")
@@ -1647,13 +1537,16 @@ func main() {
 	// development it can be useful to not emit debug information at all.
 	skipDwarf := flag.Bool("internal-nodwarf", false, "internal flag, use -no-debug instead")
 
-	var flagDeps, flagTest bool
+	var flagJSON, flagDeps, flagTest bool
+	if command == "help" || command == "list" || command == "info" || command == "build" {
+		flag.BoolVar(&flagJSON, "json", false, "print data in JSON format")
+	}
 	if command == "help" || command == "list" {
 		flag.BoolVar(&flagDeps, "deps", false, "supply -deps flag to go list")
 		flag.BoolVar(&flagTest, "test", false, "supply -test flag to go list")
 	}
 	var outpath string
-	if command == "help" || command == "build" || command == "test" || command == "flash" {
+	if command == "help" || command == "build" || command == "test" {
 		flag.StringVar(&outpath, "o", "", "output filename")
 	}
 
@@ -1743,6 +1636,7 @@ func main() {
 		Programmer:      *programmer,
 		OpenOCDCommands: ocdCommands,
 		LLVMFeatures:    *llvmFeatures,
+		PrintJSON:       flagJSON,
 		Monitor:         *monitor,
 		BaudRate:        *baudrate,
 		Timeout:         *timeout,
@@ -1797,15 +1691,13 @@ func main() {
 			os.Exit(1)
 		}
 
-		config, err := builder.NewConfig(options)
+		err := Build(pkgName, outpath, options)
 		handleCompilerError(err)
-		err = Build(pkgName, outpath, config)
-		printBuildOutput(err, *flagJSON)
 	case "flash", "gdb", "lldb":
 		pkgName := filepath.ToSlash(flag.Arg(0))
 		if command == "flash" {
-			err := Flash(pkgName, *port, outpath, options)
-			printBuildOutput(err, *flagJSON)
+			err := Flash(pkgName, *port, options)
+			handleCompilerError(err)
 		} else {
 			if !options.Debug {
 				fmt.Fprintln(os.Stderr, "Debug disabled while running debugger?")
@@ -1813,7 +1705,7 @@ func main() {
 				os.Exit(1)
 			}
 			err := Debug(command, pkgName, *ocdOutput, options)
-			printBuildOutput(err, *flagJSON)
+			handleCompilerError(err)
 		}
 	case "run":
 		if flag.NArg() < 1 {
@@ -1823,7 +1715,7 @@ func main() {
 		}
 		pkgName := filepath.ToSlash(flag.Arg(0))
 		err := Run(pkgName, options, flag.Args()[1:])
-		printBuildOutput(err, *flagJSON)
+		handleCompilerError(err)
 	case "test":
 		var pkgNames []string
 		for i := 0; i < flag.NArg(); i++ {
@@ -1890,7 +1782,6 @@ func main() {
 						wd = ""
 					}
 					diagnostics.CreateDiagnostics(err).WriteTo(os.Stderr, wd)
-					os.Exit(1)
 				}
 				if !passed {
 					select {
@@ -1958,7 +1849,7 @@ func main() {
 			fmt.Fprintln(os.Stderr, err)
 			os.Exit(1)
 		}
-		if *flagJSON {
+		if flagJSON {
 			json, _ := json.MarshalIndent(struct {
 				Target     *compileopts.TargetSpec `json:"target"`
 				GOROOT     string                  `json:"goroot"`
@@ -2000,7 +1891,7 @@ func main() {
 			os.Exit(1)
 		}
 		var extraArgs []string
-		if *flagJSON {
+		if flagJSON {
 			extraArgs = append(extraArgs, "-json")
 		}
 		if flagDeps {

main_test.go

@@ -35,8 +35,6 @@ const TESTDATA = "testdata"
 
 var testTarget = flag.String("target", "", "override test target")
 
-var testOnlyCurrentOS = flag.Bool("only-current-os", false, "")
-
 var supportedLinuxArches = map[string]string{
 	"AMD64Linux": "linux/amd64",
 	"X86Linux":   "linux/386",
@@ -160,51 +158,20 @@ func TestBuild(t *testing.T) {
 		return
 	}
 
-	if !*testOnlyCurrentOS {
-		t.Run("EmulatedCortexM3", func(t *testing.T) {
-			t.Parallel()
-			runPlatTests(optionsFromTarget("cortex-m-qemu", sema), tests, t)
-		})
+	t.Run("EmulatedCortexM3", func(t *testing.T) {
+		t.Parallel()
+		runPlatTests(optionsFromTarget("cortex-m-qemu", sema), tests, t)
+	})
 
-		t.Run("EmulatedRISCV", func(t *testing.T) {
-			t.Parallel()
-			runPlatTests(optionsFromTarget("riscv-qemu", sema), tests, t)
-		})
+	t.Run("EmulatedRISCV", func(t *testing.T) {
+		t.Parallel()
+		runPlatTests(optionsFromTarget("riscv-qemu", sema), tests, t)
+	})
 
-		t.Run("AVR", func(t *testing.T) {
-			t.Parallel()
-			runPlatTests(optionsFromTarget("simavr", sema), tests, t)
-		})
-
-		t.Run("WebAssembly", func(t *testing.T) {
-			t.Parallel()
-
-			runPlatTests(optionsFromTarget("wasm", sema), tests, t)
-			// Test with -gc=boehm.
-			t.Run("gc.go-boehm", func(t *testing.T) {
-				t.Parallel()
-				optionsBoehm := optionsFromTarget("wasm", sema)
-				optionsBoehm.GC = "boehm"
-				runTest("gc.go", optionsBoehm, t, nil, nil)
-			})
-		})
-		t.Run("WASIp1", func(t *testing.T) {
-			t.Parallel()
-			runPlatTests(optionsFromTarget("wasip1", sema), tests, t)
-
-			// Test with -gc=boehm.
-			t.Run("gc.go-boehm", func(t *testing.T) {
-				t.Parallel()
-				optionsBoehm := optionsFromTarget("wasip1", sema)
-				optionsBoehm.GC = "boehm"
-				runTest("gc.go", optionsBoehm, t, nil, nil)
-			})
-		})
-		t.Run("WASIp2", func(t *testing.T) {
-			t.Parallel()
-			runPlatTests(optionsFromTarget("wasip2", sema), tests, t)
-		})
-	}
+	t.Run("AVR", func(t *testing.T) {
+		t.Parallel()
+		runPlatTests(optionsFromTarget("simavr", sema), tests, t)
+	})
 
 	if runtime.GOOS == "linux" {
 		for name, osArch := range supportedLinuxArches {
@@ -224,13 +191,18 @@ func TestBuild(t *testing.T) {
 			options := optionsFromOSARCH("linux/mipsle/softfloat", sema)
 			runTest("cgo/", options, t, nil, nil)
 		})
-	} else if runtime.GOOS == "windows" {
-		if runtime.GOARCH != "386" {
-			t.Run("Windows386", func(t *testing.T) {
-				t.Parallel()
-				runPlatTests(optionsFromOSARCH("windows/386", sema), tests, t)
-			})
-		}
+		t.Run("WebAssembly", func(t *testing.T) {
+			t.Parallel()
+			runPlatTests(optionsFromTarget("wasm", sema), tests, t)
+		})
+		t.Run("WASI", func(t *testing.T) {
+			t.Parallel()
+			runPlatTests(optionsFromTarget("wasip1", sema), tests, t)
+		})
+		t.Run("WASIp2", func(t *testing.T) {
+			t.Parallel()
+			runPlatTests(optionsFromTarget("wasip2", sema), tests, t)
+		})
 	}
 }
 
@@ -424,12 +396,10 @@ func optionsFromOSARCH(osarch string, sema chan struct{}) compileopts.Options {
 }
 
 func runTest(name string, options compileopts.Options, t *testing.T, cmdArgs, environmentVars []string) {
-	t.Helper()
 	runTestWithConfig(name, t, options, cmdArgs, environmentVars)
 }
 
 func runTestWithConfig(name string, t *testing.T, options compileopts.Options, cmdArgs, environmentVars []string) {
-	t.Helper()
 	// Get the expected output for this test.
 	// Note: not using filepath.Join as it strips the path separator at the end
 	// of the path.
@@ -705,10 +675,6 @@ func TestWasmExport(t *testing.T) {
 				// again.
 				checkResult("reentrantCall(2, 3)", mustCall(mod.ExportedFunction("reentrantCall").Call(ctx, 2, 3)), []uint64{5})
 				checkResult("reentrantCall(1, 8)", mustCall(mod.ExportedFunction("reentrantCall").Call(ctx, 1, 8)), []uint64{9})
-
-				// Check that goroutines started inside //go:wasmexport don't
-				// block the called function from returning.
-				checkResult("goroutineExit()", mustCall(mod.ExportedFunction("goroutineExit").Call(ctx)), nil)
 			}
 
 			// Add wasip1 module.
@@ -878,7 +844,6 @@ func TestWasmExit(t *testing.T) {
 
 // Check whether the output of a test equals the expected output.
 func checkOutput(t *testing.T, filename string, actual []byte) {
-	t.Helper()
 	expectedOutput, err := os.ReadFile(filename)
 	if err != nil {
 		t.Fatal("could not read output file:", err)
@@ -887,7 +852,6 @@ func checkOutput(t *testing.T, filename string, actual []byte) {
 }
 
 func checkOutputData(t *testing.T, expectedOutput, actual []byte) {
-	t.Helper()
 	expectedOutput = bytes.ReplaceAll(expectedOutput, []byte("\r\n"), []byte("\n"))
 	actual = bytes.ReplaceAll(actual, []byte("\r\n"), []byte("\n"))
 

monitor.go

@@ -35,8 +35,8 @@ func Monitor(executable, port string, config *compileopts.Config) error {
 		// Use the RTT interface, which is documented (in part) here:
 		// https://wiki.segger.com/RTT
 
-		// Try to find the "_SEGGER_RTT" symbol (machine.rttSerialInstance)
-		// symbol, which is the RTT control block.
+		// Try to find the "machine.rttSerialInstance" symbol, which is the RTT
+		// control block.
 		file, err := elf.Open(executable)
 		if err != nil {
 			return fmt.Errorf("could not open ELF file to determine RTT control block: %w", err)
@@ -48,7 +48,7 @@ func Monitor(executable, port string, config *compileopts.Config) error {
 		}
 		var address uint64
 		for _, symbol := range symbols {
-			if symbol.Name == "_SEGGER_RTT" {
+			if symbol.Name == "machine.rttSerialInstance" {
 				address = symbol.Value
 				break
 			}

src/crypto/rand/rand_windows.go

@@ -1,9 +1,6 @@
 package rand
 
-import (
-	"errors"
-	"unsafe"
-)
+import "errors"
 
 func init() {
 	Reader = &reader{}
@@ -19,22 +16,28 @@ func (r *reader) Read(b []byte) (n int, err error) {
 		return
 	}
 
-	// Use the old RtlGenRandom, introduced in Windows XP.
-	// Even though the documentation says it is deprecated, it is widely used
-	// and probably won't go away anytime soon.
-	// See for example: https://github.com/golang/go/issues/33542
-	// For Windows 7 and newer, we might switch to ProcessPrng in the future
-	// (which is a documented function and might be a tiny bit faster).
-	ok := libc_RtlGenRandom(unsafe.Pointer(&b[0]), len(b))
-	if !ok {
-		return 0, errRandom
+	var randomByte uint32
+	for i := range b {
+		// Call rand_s every four bytes because it's a C int (always 32-bit in
+		// Windows).
+		if i%4 == 0 {
+			errCode := libc_rand_s(&randomByte)
+			if errCode != 0 {
+				// According to the documentation, it can return an error.
+				return n, errRandom
+			}
+		} else {
+			randomByte >>= 8
+		}
+		b[i] = byte(randomByte)
 	}
+
 	return len(b), nil
 }
 
-// This function is part of advapi32.dll, and is called SystemFunction036 for
-// some reason. It's available on Windows XP and newer.
-// See: https://learn.microsoft.com/en-us/windows/win32/api/ntsecapi/nf-ntsecapi-rtlgenrandom
+// Cryptographically secure random number generator.
+// https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/rand-s?view=msvc-170
+// errno_t rand_s(unsigned int* randomValue);
 //
-//export SystemFunction036
-func libc_RtlGenRandom(buf unsafe.Pointer, len int) bool
+//export rand_s
+func libc_rand_s(randomValue *uint32) int32

src/crypto/x509/internal/macos/macos.go

@@ -63,10 +63,6 @@ func SecCertificateCopyData(cert CFRef) ([]byte, error) {
 	return nil, errors.New("not implemented")
 }
 
-func SecTrustCopyCertificateChain(trustObj CFRef) (CFRef, error) {
-	return 0, errors.New("not implemented")
-}
-
 func SecTrustEvaluateWithError(trustObj CFRef) (int, error) {
 	return 0, errors.New("not implemented")
 }

src/device/arm/arm.go

@@ -48,10 +48,10 @@ func Asm(asm string)
 // recognizes template values in the form {name}, like so:
 //
 //	arm.AsmFull(
-//	    "str {value}, [{result}]",
+//	    "str {value}, {result}",
 //	    map[string]interface{}{
-//	        "value":  1,
-//	        "result": uintptr(unsafe.Pointer(&dest)),
+//	        "value":  1
+//	        "result": &dest,
 //	    })
 //
 // You can use {} in the asm string (which expands to a register) to set the

src/device/arm/cortexm.S

@@ -1,6 +1,29 @@
 .syntax unified
 .cfi_sections .debug_frame
 
+.section .text.HardFault_Handler
+.global  HardFault_Handler
+.type    HardFault_Handler, %function
+HardFault_Handler:
+    .cfi_startproc
+    // Put the old stack pointer in the first argument, for easy debugging. This
+    // is especially useful on Cortex-M0, which supports far fewer debug
+    // facilities.
+    mov r0, sp
+
+    // Load the default stack pointer from address 0 so that we can call normal
+    // functions again that expect a working stack. However, it will corrupt the
+    // old stack so the function below must not attempt to recover from this
+    // fault.
+    movs r3, #0
+    ldr r3, [r3]
+    mov sp, r3
+
+    // Continue handling this error in Go.
+    bl handleHardFault
+    .cfi_endproc
+.size HardFault_Handler, .-HardFault_Handler
+
 // This is a convenience function for semihosting support.
 // At some point, this should be replaced by inline assembly.
 .section .text.SemihostingCall

src/device/arm64/arm64.go

@@ -10,10 +10,10 @@ func Asm(asm string)
 // recognizes template values in the form {name}, like so:
 //
 //	arm.AsmFull(
-//	    "str {value}, [{result}]",
+//	    "str {value}, {result}",
 //	    map[string]interface{}{
-//	        "value":  1,
-//	        "result": uintptr(unsafe.Pointer(&dest)),
+//	        "value":  1
+//	        "result": &dest,
 //	    })
 //
 // You can use {} in the asm string (which expands to a register) to set the

src/device/asm.go

@@ -10,10 +10,10 @@ func Asm(asm string)
 // recognizes template values in the form {name}, like so:
 //
 //	arm.AsmFull(
-//	    "str {value}, [{result}]",
+//	    "str {value}, {result}",
 //	    map[string]interface{}{
-//	        "value":  1,
-//	        "result": uintptr(unsafe.Pointer(&dest)),
+//	        "value":  1
+//	        "result": &dest,
 //	    })
 //
 // You can use {} in the asm string (which expands to a register) to set the

src/device/riscv/riscv.go

@@ -10,10 +10,10 @@ func Asm(asm string)
 // recognizes template values in the form {name}, like so:
 //
 //	arm.AsmFull(
-//	    "st {value}, [{result}]",
+//	    "st {value}, {result}",
 //	    map[string]interface{}{
-//	        "value":  1,
-//	        "result": uintptr(unsafe.Pointer(&dest)),
+//	        "value":  1
+//	        "result": &dest,
 //	    })
 //
 // You can use {} in the asm string (which expands to a register) to set the

src/device/riscv/start.S

@@ -3,47 +3,8 @@
 .type _start,@function
 
 _start:
-    // If we're on a multicore system, we need to wait for hart 0 to wake us up.
-#if TINYGO_CORES > 1
-    csrr a0, mhartid
-
-    // Hart 0 stack
-    bnez a0, 1f
-    la sp,      _stack_top
-
-1:
-    // Hart 1 stack
-    li a1, 1
-    bne a0, a1, 2f
-    la sp,      _stack1_top
-
-2:
-    // Hart 2 stack
-    #if TINYGO_CORES >= 3
-    li a1, 2
-    bne a0, a1, 3f
-    la sp,      _stack2_top
-    #endif
-
-3:
-    // Hart 3 stack
-    #if TINYGO_CORES >= 4
-    li a1, 3
-    bne a0, a1, 4f
-    la sp,      _stack3_top
-    #endif
-
-4:
-    // done
-
-#if TINYGO_CORES > 4
-#error only up to 4 cores are supported at the moment!
-#endif
-
-#else
     // Load the stack pointer.
     la sp,      _stack_top
-#endif
 
     // Load the globals pointer. The program will load pointers relative to this
     // register, so it must be set to the right value on startup.

src/device/rp/rp2040-extra.go

@@ -1,51 +0,0 @@
-// Hand created file. DO NOT DELETE.
-// Definitions that are missing in src/device/rp/rp2040.go generated from SVDs
-
-//go:build rp && rp2040
-
-package rp
-
-// DMA: 2.5.3.1. System DREQ Table from RP2040 Datasheet
-// https://datasheets.raspberrypi.com/rp2040/rp2040-datasheet.pdf
-const (
-	DREQ_PIO0_TX0   = 0
-	DREQ_PIO0_TX1   = 1
-	DREQ_PIO0_TX2   = 2
-	DREQ_PIO0_TX3   = 3
-	DREQ_PIO0_RX0   = 4
-	DREQ_PIO0_RX1   = 5
-	DREQ_PIO0_RX2   = 6
-	DREQ_PIO0_RX3   = 7
-	DREQ_PIO1_TX0   = 8
-	DREQ_PIO1_TX1   = 9
-	DREQ_PIO1_TX2   = 10
-	DREQ_PIO1_TX3   = 11
-	DREQ_PIO1_RX0   = 12
-	DREQ_PIO1_RX1   = 13
-	DREQ_PIO1_RX2   = 14
-	DREQ_PIO1_RX3   = 15
-	DREQ_SPI0_TX    = 16
-	DREQ_SPI0_RX    = 17
-	DREQ_SPI1_TX    = 18
-	DREQ_SPI1_RX    = 19
-	DREQ_UART0_TX   = 20
-	DREQ_UART0_RX   = 21
-	DREQ_UART1_TX   = 22
-	DREQ_UART1_RX   = 23
-	DREQ_PWM_WRAP0  = 24
-	DREQ_PWM_WRAP1  = 25
-	DREQ_PWM_WRAP2  = 26
-	DREQ_PWM_WRAP3  = 27
-	DREQ_PWM_WRAP4  = 28
-	DREQ_PWM_WRAP5  = 29
-	DREQ_PWM_WRAP6  = 30
-	DREQ_PWM_WRAP7  = 31
-	DREQ_I2C0_TX    = 32
-	DREQ_I2C0_RX    = 33
-	DREQ_I2C1_TX    = 34
-	DREQ_I2C1_RX    = 35
-	DREQ_ADC        = 36
-	DREQ_XIP_STREAM = 37
-	DREQ_XIP_SSITX  = 38
-	DREQ_XIP_SSIRX  = 39
-)

src/device/rp/rp2350-extra.go

@@ -1,66 +0,0 @@
-// Hand created file. DO NOT DELETE.
-// Definitions that are missing in src/device/rp/rp2350.go generated from SVDs
-
-//go:build rp && rp2350
-
-package rp
-
-// DMA: 12.6.4.1. System DREQ Table from RP2350 Datasheet
-// https://datasheets.raspberrypi.com/rp2350/rp2350-datasheet.pdf
-const (
-	DREQ_PIO0_TX0   = 0
-	DREQ_PIO0_TX1   = 1
-	DREQ_PIO0_TX2   = 2
-	DREQ_PIO0_TX3   = 3
-	DREQ_PIO0_RX0   = 4
-	DREQ_PIO0_RX1   = 5
-	DREQ_PIO0_RX2   = 6
-	DREQ_PIO0_RX3   = 7
-	DREQ_PIO1_TX0   = 8
-	DREQ_PIO1_TX1   = 9
-	DREQ_PIO1_TX2   = 10
-	DREQ_PIO1_TX3   = 11
-	DREQ_PIO1_RX0   = 12
-	DREQ_PIO1_RX1   = 13
-	DREQ_PIO1_RX2   = 14
-	DREQ_PIO1_RX3   = 15
-	DREQ_PIO2_TX0   = 16
-	DREQ_PIO2_TX1   = 17
-	DREQ_PIO2_TX2   = 18
-	DREQ_PIO2_TX3   = 19
-	DREQ_PIO2_RX0   = 20
-	DREQ_PIO2_RX1   = 21
-	DREQ_PIO2_RX2   = 22
-	DREQ_PIO2_RX3   = 23
-	DREQ_SPI0_TX    = 24
-	DREQ_SPI0_RX    = 25
-	DREQ_SPI1_TX    = 26
-	DREQ_SPI1_RX    = 27
-	DREQ_UART0_TX   = 28
-	DREQ_UART0_RX   = 29
-	DREQ_UART1_TX   = 30
-	DREQ_UART1_RX   = 31
-	DREQ_PWM_WRAP0  = 32
-	DREQ_PWM_WRAP1  = 33
-	DREQ_PWM_WRAP2  = 34
-	DREQ_PWM_WRAP3  = 35
-	DREQ_PWM_WRAP4  = 36
-	DREQ_PWM_WRAP5  = 37
-	DREQ_PWM_WRAP6  = 38
-	DREQ_PWM_WRAP7  = 39
-	DREQ_PWM_WRAP8  = 40
-	DREQ_PWM_WRAP9  = 41
-	DREQ_PWM_WRAP10 = 42
-	DREQ_PWM_WRAP11 = 43
-	DREQ_I2C0_TX    = 44
-	DREQ_I2C0_RX    = 45
-	DREQ_I2C1_TX    = 46
-	DREQ_I2C1_RX    = 47
-	DREQ_ADC        = 48
-	DREQ_XIP_STREAM = 49
-	DREQ_XIP_QMITX  = 50
-	DREQ_XIP_QMIRX  = 51
-	DREQ_HSTX       = 52
-	DREQ_CORESIGHT  = 53
-	DREQ_SHA256     = 54
-)

src/examples/usb-storage/main.go

@@ -1,15 +0,0 @@
-package main
-
-import (
-	"machine"
-	"machine/usb/msc"
-	"time"
-)
-
-func main() {
-	msc.Port(machine.Flash)
-
-	for {
-		time.Sleep(2 * time.Second)
-	}
-}

src/internal/abi/escape.go

@@ -8,10 +8,3 @@ import "unsafe"
 func NoEscape(p unsafe.Pointer) unsafe.Pointer {
 	return p
 }
-
-func Escape[T any](x T) T {
-	// This function is either implemented in the compiler, or left undefined
-	// for some variation of T. The body of this function should not be compiled
-	// as-is.
-	panic("internal/abi.Escape: unreachable (implemented in the compiler)")
-}

src/internal/gclayout/gclayout.go

@@ -5,20 +5,29 @@ import "unsafe"
 // Internal constants for gc layout
 // See runtime/gc_precise.go
 
-type Layout uintptr
-
-const (
-	// 16-bit int => bits = 4
-	// 32-bit int => bits = 5
-	// 64-bit int => bits = 6
-	sizeBits = 4 + unsafe.Sizeof(uintptr(0))/4
-
-	sizeShift = sizeBits + 1
-
-	NoPtrs  = Layout(uintptr(0b0<<sizeShift) | uintptr(0b1<<1) | uintptr(1))
-	Pointer = Layout(uintptr(0b1<<sizeShift) | uintptr(0b1<<1) | uintptr(1))
-	String  = Layout(uintptr(0b01<<sizeShift) | uintptr(0b10<<1) | uintptr(1))
-	Slice   = Layout(uintptr(0b001<<sizeShift) | uintptr(0b11<<1) | uintptr(1))
+var (
+	NoPtrs  unsafe.Pointer
+	Pointer unsafe.Pointer
+	String  unsafe.Pointer
+	Slice   unsafe.Pointer
 )
 
-func (l Layout) AsPtr() unsafe.Pointer { return unsafe.Pointer(l) }
+func init() {
+	var sizeBits uintptr
+
+	switch unsafe.Sizeof(uintptr(0)) {
+	case 8:
+		sizeBits = 6
+	case 4:
+		sizeBits = 5
+	case 2:
+		sizeBits = 4
+	}
+
+	var sizeShift = sizeBits + 1
+
+	NoPtrs = unsafe.Pointer(uintptr(0b0<<sizeShift) | uintptr(0b1<<1) | uintptr(1))
+	Pointer = unsafe.Pointer(uintptr(0b1<<sizeShift) | uintptr(0b1<<1) | uintptr(1))
+	String = unsafe.Pointer(uintptr(0b01<<sizeShift) | uintptr(0b10<<1) | uintptr(1))
+	Slice = unsafe.Pointer(uintptr(0b001<<sizeShift) | uintptr(0b11<<1) | uintptr(1))
+}

src/internal/reflectlite/type.go

@@ -708,16 +708,16 @@ func (r *RawType) gcLayout() unsafe.Pointer {
 	kind := r.Kind()
 
 	if kind < String {
-		return gclayout.NoPtrs.AsPtr()
+		return gclayout.NoPtrs
 	}
 
 	switch kind {
 	case Pointer, UnsafePointer, Chan, Map:
-		return gclayout.Pointer.AsPtr()
+		return gclayout.Pointer
 	case String:
-		return gclayout.String.AsPtr()
+		return gclayout.String
 	case Slice:
-		return gclayout.Slice.AsPtr()
+		return gclayout.Slice
 	}
 
 	// Unknown (for now); let the conservative pointer scanning handle it

src/internal/task/atomic-cooperative.go

@@ -1,4 +1,4 @@
-//go:build tinygo.unicore
+//go:build !scheduler.threads
 
 package task
 

src/internal/task/atomic-preemptive.go

@@ -1,4 +1,4 @@
-//go:build !tinygo.unicore
+//go:build scheduler.threads
 
 package task
 

src/internal/task/darwin.go

@@ -1,11 +0,0 @@
-//go:build darwin
-
-package task
-
-import "unsafe"
-
-// MacOS uses a pointer so unsafe.Pointer should be fine:
-//
-//	typedef struct _opaque_pthread_t *__darwin_pthread_t;
-//	typedef __darwin_pthread_t pthread_t;
-type threadID unsafe.Pointer

src/internal/task/futex-cooperative.go

@@ -1,4 +1,4 @@
-//go:build tinygo.unicore
+//go:build !scheduler.threads
 
 package task
 

src/internal/task/futex-cores.go

@@ -1,64 +0,0 @@
-//go:build scheduler.cores
-
-package task
-
-import "runtime/interrupt"
-
-// A futex is a way for userspace to wait with the pointer as the key, and for
-// another thread to wake one or all waiting threads keyed on the same pointer.
-//
-// A futex does not change the underlying value, it only reads it before to prevent
-// lost wake-ups.
-type Futex struct {
-	Uint32
-
-	waiters Stack
-}
-
-// Atomically check for cmp to still be equal to the futex value and if so, go
-// to sleep. Return true if we were definitely awoken by a call to Wake or
-// WakeAll, and false if we can't be sure of that.
-func (f *Futex) Wait(cmp uint32) (awoken bool) {
-	mask := lockFutex()
-
-	if f.Uint32.Load() != cmp {
-		unlockFutex(mask)
-		return false
-	}
-
-	// Push the current goroutine onto the waiter stack.
-	f.waiters.Push(Current())
-
-	unlockFutex(mask)
-
-	// Pause until this task is awoken by Wake/WakeAll.
-	Pause()
-
-	// We were awoken by a call to Wake or WakeAll. There is no chance for
-	// spurious wakeups.
-	return true
-}
-
-// Wake a single waiter.
-func (f *Futex) Wake() {
-	mask := lockFutex()
-	if t := f.waiters.Pop(); t != nil {
-		scheduleTask(t)
-	}
-	unlockFutex(mask)
-}
-
-// Wake all waiters.
-func (f *Futex) WakeAll() {
-	mask := lockFutex()
-	for t := f.waiters.Pop(); t != nil; t = f.waiters.Pop() {
-		scheduleTask(t)
-	}
-	unlockFutex(mask)
-}
-
-//go:linkname lockFutex runtime.lockFutex
-func lockFutex() interrupt.State
-
-//go:linkname unlockFutex runtime.unlockFutex
-func unlockFutex(interrupt.State)