[all-commits] [llvm/llvm-project] 8c6041: GlobalISel: Fix combine duplicating atomic loads

[Matt Arsenault via All-commits]

  Branch: refs/heads/users/arsenm/globalisel-fix-duplicating-atomic-loads
  Home:   https://github.com/llvm/llvm-project
  Commit: 8c604131e334429111df841f00e810a3084a9956
      https://github.com/llvm/llvm-project/commit/8c604131e334429111df841f00e810a3084a9956
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2024-10-10 (Thu, 10 Oct 2024)

  Changed paths:
    M llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp
    M llvm/test/CodeGen/AMDGPU/GlobalISel/atomic_load_flat.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/atomic_load_global.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/atomic_load_local_2.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/postlegalizer-combiner-sextload-from-sextinreg.mir

  Log Message:
  -----------
  GlobalISel: Fix combine duplicating atomic loads

The sext_inreg (load) combine was not deleting the old load instruction,
and it would never be deleted if volatile or atomic.



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