tinygo/CHANGELOG.md

0.5.0

• compiler driver
  • use wasm-ld instead of wasm-ld-8 on macOS
  • drop dependency on llvm-ar
  • fix linker script includes when running outside TINYGOROOT
• compiler
  • switch to LLVM 8
  • add support for the Go 1.12 standard library (Go 1.11 is still supported)
  • work around lack of escape analysis due to nil checks
  • implement casting named structs and pointers to them
  • fix int casting to use the source signedness
  • fix some bugs around make([]T, …) with uncommon index types
  • some other optimizations
  • support interface asserts in interp for "math/rand" support
  • resolve all func value targets at compile time (wasm-only at the moment)
• cgo
  • improve diagnostics
  • implement C struct, union, and arrays
  • fix CGo-related crash in libclang
  • implement C.struct_ types
• targets
  • all baremetal: pretend to be linux/arm instead of js/wasm
  • avr: improve uintptr support
  • cortexm: implement memmove intrinsic generated by LLVM
  • cortexm: use the lld linker instead of arm-none-eabi-ld
  • darwin: use custom syscall package that links to libSystem.dylib
  • microbit: add blink example
  • samd21: support I2C1
  • samd21: machine/atsamd21: correct pad/pin handling when using both UART and USBCDC interfaces at same time
  • stm32f4discovery: add support for this board
  • wasm: support async func values
  • wasm: improve documentation and add extra example

0.4.1

• compiler
  • fix objcopy replacement to include the .data section in the firmware image
  • use llvm-ar-7 on Linux to fix the Docker image

0.4.0

• compiler
  • switch to the hardfloat ABI on ARM, which is more widely used
  • avoid a dependency on objcopy (arm-none-eabi-objcopy etc.)
  • fix a bug in make([]T, n) where n is 64-bits on a 32-bit platform
  • adapt to a change in the AVR backend in LLVM 8
  • directly support the .uf2 firmware format as used on Adafruit boards
  • fix a bug when calling panic() at init time outside of the main package
  • implement nil checks, which results in a ~5% increase in code size
  • inline slice bounds checking, which results in a ~1% decrease in code size
• targets
  • samd21: fix a bug in port B pins
  • samd21: implement SPI peripheral
  • samd21: implement ADC peripheral
  • stm32: fix a bug in timekeeping
  • wasm: fix a bug in wasm_exec.js that caused corruption in linear memory when running on Node.js.

0.3.0

• compiler
  • remove old -initinterp flag
  • add support for macOS
• cgo
  • add support for bool/float/complex types
• standard library
  • device/arm: add support to disable/enable hardware interrupts
  • machine: add CPU frequency for nrf-based boards
  • syscall: add support for darwin/amd64
• targets
  • circuitplay_express: add support for this board
  • microbit: add regular pin constants
  • samd21: fix time function for goroutine support
  • samd21: add support for USB-CDC (serial over USB)
  • samd21: add support for pins in port B
  • samd21: add support for pullup and pulldown pins
  • wasm: add support for Safari in example

0.2.0

• command line
  • add version subcommand
• compiler
  • fix a bug in floating point comparisons with NaN values
  • fix a bug when calling panic in package initialization code
  • add support for comparing complex64 and complex128
• cgo
  • add support for external globals
  • add support for pointers and function pointers
• standard library
  • fmt: initial support, fmt.Println works
  • math: support for most/all functions
  • os: initial support (only stdin/stdout/stderr)
  • reflect: initial support
  • syscall: add support for amd64, arm, and arm64