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0.34.0

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@deadprogram deadprogram released this 26 Oct 08:39
v0.34.0
2a76ceb

This release adds support for //go:wasmexport that is a standardized way to export WebAssembly functions to the host, improves garbage collection performance (especially on wasm), adds big-endian MIPS support (GOOS=mips), and adds two new boards! It also contains a number of smaller improvements and bug fixes.

  • general
    • fix GOOS=wasip1 for tinygo test
    • add -C DIR flag
    • add initial documentation for project governance
    • add -ldflags='-extldflags=...' support
    • improve usage message with tinygo help and when passing invalid parameters
  • compiler
    • builder: remove environment variables when invoking Clang, to avoid the environment changing the behavior
    • builder: check for the Go toolchain version used to compile TinyGo
    • cgo: add C.CBytes implementation
    • compiler: fix passing weirdly-padded structs as parameters to new goroutines
    • compiler: support pragmas on generic functions
    • compiler: do not let the slice buffer escape when casting a []byte or []rune to a string, to help escape analysis
    • compiler: conform to the latest iteration of the wasm types proposal
    • loader: don't panic when main package is not named 'main'
    • loader: make sure we always return type checker errors even without type errors
    • transform: optimize range over []byte(string)
  • standard library
    • crypto/x509: add package stub to build crypto/x509 on macOS
    • machine/usb/adc/midi: fix PitchBend
    • os: add Truncate stub for baremetal
    • os: add stubs for os.File deadlines
    • os: add internal net.newUnixFile for the net package
    • runtime: stub runtime_{Before,After}Exec for linkage
    • runtime: randomize map accesses
    • runtime: support maps.Clone
    • runtime: add more fields to MemStats
    • runtime: implement newcoro, coroswitch to support package iter
    • runtime: disallow defer in interrupts
    • runtime: add support for os/signal on Linux and MacOS
    • runtime: add gc layout info for some basic types to help the precise GC
    • runtime: bump GC mark stack size to avoid excessive heap rescans
  • targets
    • darwin: use Go standard library syscall package instead of a custom one
    • fe310: support GPIO PinInput
    • mips: fix compiler crash with GOMIPS=softfloat and defer
    • mips: add big-endian (GOARCH=mips) support
    • mips: use MIPS32 (instead of MIPS32R2) as the instruction set for wider compatibility
    • wasi: add relative and absolute --dir options to wasmtime args
    • wasip2: add wasmtime -S args to support network interfaces
    • wasm: add //go:wasmexport support (for all WebAssembly targets)
    • wasm: use precise instead of conservative GC for WebAssembly (including WASI)
    • wasm-unknown: add bulk memory flags since basically every runtime has it now
  • boards
Assets 11
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