[llvm-branch-commits] [llvm] [AVR] Backport #118015 and #121498 (PR #125081)

[Alex Rønne Petersen via llvm-branch-commits]

alexrp wrote:

FWIW, the issue this addresses is a hard blocker for building even basic AVR programs with Zig as well, so definitely +1 for a backport from our side.

https://github.com/llvm/llvm-project/pull/125081