[all-commits] [llvm/llvm-project] 7ab482: AMDGPU: Support VALU add instructions in localstac...

[Matt Arsenault via All-commits]

  Branch: refs/heads/users/arsenm/local-stack-slot-alloc-v-add-support
  Home:   https://github.com/llvm/llvm-project
  Commit: 7ab4822d2edf5526f0c4d1cac064c827b94ce283
      https://github.com/llvm/llvm-project/commit/7ab4822d2edf5526f0c4d1cac064c827b94ce283
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2024-08-05 (Mon, 05 Aug 2024)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
    M llvm/lib/Target/AMDGPU/SOPInstructions.td
    M llvm/lib/Target/AMDGPU/VOP2Instructions.td
    A llvm/test/CodeGen/AMDGPU/local-stack-alloc-add-references.gfx10.mir
    A llvm/test/CodeGen/AMDGPU/local-stack-alloc-add-references.gfx8.mir
    A llvm/test/CodeGen/AMDGPU/local-stack-alloc-add-references.gfx9.mir

  Log Message:
  -----------
  AMDGPU: Support VALU add instructions in localstackalloc

Pre-enable this optimization before allowing folds of frame
indexes into add instructions. Disables this fold when using
scratch instructions for now. I see some code size improvements
with it, but the optimization needs to be smarter about the
uses depending on the register classes.



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