[all-commits] [llvm/llvm-project] 1da798: PeepholeOpt: Do not skip reg_sequence sources with...

Matt Arsenault via All-commits all-commits at lists.llvm.org
Wed Feb 5 08:38:41 PST 2025


  Branch: refs/heads/users/arsenm/peephole-opt/do-not-skip-rewrite-reg-sequence-with-subreg-input
  Home:   https://github.com/llvm/llvm-project
  Commit: 1da7982abc27e4bc8576e7605ebf557c194be69f
      https://github.com/llvm/llvm-project/commit/1da7982abc27e4bc8576e7605ebf557c194be69f
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2025-02-05 (Wed, 05 Feb 2025)

  Changed paths:
    M llvm/lib/CodeGen/PeepholeOptimizer.cpp
    M llvm/test/CodeGen/AMDGPU/peephole-opt-regseq-removal.mir

  Log Message:
  -----------
  PeepholeOpt: Do not skip reg_sequence sources with subregs

Contrary to the comment, this particular code is not responsible
for handling any composes that may be required, and unhandled cases
are already rejected later. Lift this restriction to permit composes
and reg_sequence subregisters later.



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