[all-commits] [llvm/llvm-project] bbbc68: [AArch64] Force dwarf unwind for MTE-tagged stack ...

[Dan Blackwell via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: bbbc681463316425e3e511a030a2f932e5999bef
      https://github.com/llvm/llvm-project/commit/bbbc681463316425e3e511a030a2f932e5999bef
  Author: Dan Blackwell <dan_blackwell at apple.com>
  Date:   2025-12-02 (Tue, 02 Dec 2025)

  Changed paths:
    M llvm/lib/Target/AArch64/MCTargetDesc/AArch64AsmBackend.cpp
    A llvm/test/CodeGen/AArch64/memtag-compact-unwind.ll

  Log Message:
  -----------
  [AArch64] Force dwarf unwind for MTE-tagged stack frames (#168530)

Currently, on Darwin running with -fsanitize=memtag-stack generates
compact-unwind exception unwinding that does not untag MTE-tagged memory
on the way back up.

This patch forces dwarf unwinding on MTE-tagged frames.

rdar://162195539



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