[all-commits] [llvm/llvm-project] bbb772: AMDGPU: Use default shouldRewriteCopySrc

[Matt Arsenault via All-commits]

  Branch: refs/heads/users/arsenm/amdgpu/use-default-shouldRewriteCopySrc
  Home:   https://github.com/llvm/llvm-project
  Commit: bbb77264057819eb848987e29a06bd236711a493
      https://github.com/llvm/llvm-project/commit/bbb77264057819eb848987e29a06bd236711a493
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2025-02-05 (Wed, 05 Feb 2025)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
    M llvm/lib/Target/AMDGPU/SIRegisterInfo.h
    M llvm/test/CodeGen/AMDGPU/copy-illegal-type.ll
    M llvm/test/CodeGen/AMDGPU/ctpop64.ll
    M llvm/test/CodeGen/AMDGPU/idot2.ll
    M llvm/test/CodeGen/AMDGPU/load-global-i32.ll
    M llvm/test/CodeGen/AMDGPU/peephole-opt-fold-reg-sequence-subreg.mir
    M llvm/test/CodeGen/AMDGPU/peephole-opt-regseq-removal.mir
    M llvm/test/CodeGen/AMDGPU/spill-scavenge-offset.ll

  Log Message:
  -----------
  AMDGPU: Use default shouldRewriteCopySrc

This was ultimately working around bugs in subregister handling
in peephole-opt. In the common case, it would give up on folding
anything into a subregister extract copy.



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