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@aykevl aykevl released this 12 Feb 13:29
· 845 commits to release since this release
v0.27.0
0d56dee

This release adds support for Go 1.20 and LLVM 15. In addition, it drops a dependency on the AVR and Xtensa toolchains, so you don't need to install avr-gcc or xtensa-esp32-elf-ld making TinyGo much easier to install. Instead, it uses the built-in LLVM linker instead.
Newly supported targets are windows/arm64 (or "Windows on ARM64"), Waveshare RP2040 Zero, Arduino Leonardo, Adafruit KB2040, Adafruit Feather M0 Express, Makerfabs ESP32C3SPI35, and Espressif ESP32-C3-DevKit-RUST-1. As usual, there are also a ton of smaller fixes and improvements.

Here is a detailed changelog for this release:

  • general
    • all: update musl
    • all: remove "acm:"` prefix for USB vid/pid pair
    • all: add support for LLVM 15
    • all: use DWARF version 4
    • all: add initial (incomplete) support for Go 1.20
    • all: add -gc=custom option
    • main: print ldflags including ThinLTO flags with -x
    • main: fix error message when a serial port can't be accessed
    • main: add -timeout flag to allow setting how long TinyGo will try looking for a MSD volume for flashing
    • test: print PASS on pass when running standalone test binaries
    • test: fix printing of benchmark output
    • test: print package name when compilation failed (not just when the test failed)
  • compiler
    • refactor to support LLVM 15
    • builder: print compiler commands while building a library
    • compiler: fix stack overflow when creating recursive pointer types (fix for LLVM 15+ only)
    • compiler: allow map keys and values of ≥256 bytes
    • cgo: add support for C.float and C.double
    • cgo: support anonymous enums included in multiple Go files
    • cgo: add support for bitwise operators
    • interp: add support for constant icmp instructions
    • transform: fix memory corruption issues
  • standard library
    • machine/usb: remove allocs in USB ISR
    • machine/usb: add Port() and deprecate New() to have the API better match the singleton that is actually being returned
    • machine/usb: change HID usage-maximum to 0xFF
    • machine/usb: add USB HID joystick support
    • machine/usb: change to not send before endpoint initialization
    • net: implement Pipe
    • os: add stub for os.Chtimes
    • reflect: stub out Type.FieldByIndex
    • reflect: add Value.IsZero method
    • reflect: fix bug in .Field method when the field fits in a pointer but the parent doesn't
    • runtime: switch some panic() calls in the gc to runtimePanic() for consistency
    • runtime: add xorshift-based fastrand64
    • runtime: fix alignment for arm64, arm, xtensa, riscv
    • runtime: implement precise GC
    • runtime/debug: stub PrintStack
    • sync: implement simple pooling in sync.Pool
    • syscall: stubbed Setuid, Exec and friends
    • syscall: add more stubs as needed for Go 1.20 support
    • testing: implement t.Setenv
    • unsafe: add support for Go 1.20 slice/string functions
  • targets
    • all: do not set stack size per board
    • all: update picolibc to v1.7.9
    • atsame5x: fix CAN extendedID handling
    • atsame5x: reduce heap allocation
    • avr: drop GNU toolchain dependency
    • avr: fix .data initialization for binaries over 64kB
    • avr: support ThinLTO
    • baremetal: implements calloc
    • darwin: fix syscall.Open on darwin/arm64
    • darwin: fix error with tinygo lldb
    • esp: use LLVM Xtensa linker instead of Espressif toolchain
    • esp: use ThinLTO for Xtensa
    • esp32c3: add SPI support
    • linux: include musl getpagesize function in release
    • nrf51: add ADC implementation
    • nrf52840: add PDM support
    • riscv: add "target-abi" metadata flag
    • rp2040: remove mem allocation in GPIO ISR
    • rp2040: avoid allocating clock on heap
    • rp2040: add basic GPIO support for PIO
    • rp2040: fix USB interrupt issue
    • rp2040: fix RP2040-E5 USB errata
    • stm32: always set ADC pins to pullups floating
    • stm32f1, stm32f4: fix ADC by clearing the correct bit for rank after each read
    • stm32wl: Fix incomplete RNG initialisation
    • stm32wlx: change order for init so clock speeds are set before peripheral start
    • wasi: makes wasmtime "run" explicit
    • wasm: fix GC scanning of allocas
    • wasm: allow custom malloc implementation
    • wasm: remove -wasm-abi= flag (use -target instead)
    • wasm: fix scanning of the stack
    • wasm: fix panic when allocating 0 bytes using malloc
    • wasm: always run wasm-opt even with -scheduler=none
    • wasm: avoid miscompile with ThinLTO
    • wasm: allow the emulator to expand {tmpDir}
    • wasm: support ThinLTO
    • windows: update mingw-w64 version to avoid linker warning
    • windows: add ARM64 support
  • boards
    • Add Waveshare RP2040 Zero
    • Add Arduino Leonardo support
    • Add Adafruit KB2040
    • Add Adafruit Feather M0 Express
    • Add Makerfabs ESP32C3SPI35 TFT Touchscreen board
    • Add Espressif ESP32-C3-DevKit-RUST-1 board
    • lgt92: fix OpenOCD configuration
    • xiao-rp2040: fix D9 and D10 constants
    • xiao-rp2040: add pin definitions
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