[elsjaako]

AVR (for example, old Arduino boards) and xtensa (like esp32 developer boards) are the only ones I know of. Most of the desktop OS platforms are supported by both.

[viraptor]

AVR should be working these days https://github.com/llvm/llvm-project/tree/main/llvm/lib/Targ...

Unless you mean some specific chips?

[masklinn]

Also while ESP32 has not been mainlined (I think), Espressif has both an llvm and a rustc fork.

[pantalaimon]

Espressif has forks of everything (OpenOCD, GDB, GCC) that they never mainline and that just become outdated as they release new chips.

The latest xtensa-esp8266-elf-gcc is version 5.2

[jeroenhd]

Their first patches are in the process of being merged: https://discourse.llvm.org/t/rfc-request-for-upstream-tensil...

[elsjaako]

I didn't know that!