[all-commits] [llvm/llvm-project] acd579: AArch64: Skip analyzeCompare for subregister uses

[Matt Arsenault via All-commits]

  Branch: refs/heads/users/arsenm/aarch64-skip-analyzeCompare-subregisters
  Home:   https://github.com/llvm/llvm-project
  Commit: acd579ef56f1b493349997a6be9a21c4bea7ec5a
      https://github.com/llvm/llvm-project/commit/acd579ef56f1b493349997a6be9a21c4bea7ec5a
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2025-05-27 (Tue, 27 May 2025)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
    A llvm/test/CodeGen/AArch64/peephole-opt-analyzeCompare-subreg-use.mir

  Log Message:
  -----------
  AArch64: Skip analyzeCompare for subregister uses

The API is broken and doesn't provide a way to report the used
subregister, so it's unsafe to use. This will produce illegal
folds if the subregister is silently dropped.



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