[all-commits] [llvm/llvm-project] e05ce0: PEI should be able to use backward walk in replace...

[alex-t via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e05ce03cfa0b36e9b99149e21afcb1fc039df813
      https://github.com/llvm/llvm-project/commit/e05ce03cfa0b36e9b99149e21afcb1fc039df813
  Author: Alexander Timofeev <alexander.timofeev at amd.com>
  Date:   2022-11-15 (Tue, 15 Nov 2022)

  Changed paths:
    M llvm/include/llvm/CodeGen/TargetRegisterInfo.h
    M llvm/lib/CodeGen/PrologEpilogInserter.cpp
    M llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
    M llvm/lib/Target/AMDGPU/SIRegisterInfo.h
    M llvm/test/CodeGen/AMDGPU/GlobalISel/call-outgoing-stack-args.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/extractelement-stack-lower.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/flat-scratch.ll
    M llvm/test/CodeGen/AMDGPU/accvgpr-spill-scc-clobber.mir
    M llvm/test/CodeGen/AMDGPU/chain-hi-to-lo.ll
    M llvm/test/CodeGen/AMDGPU/flat-scratch-init.ll
    M llvm/test/CodeGen/AMDGPU/flat-scratch.ll
    M llvm/test/CodeGen/AMDGPU/frame-index.mir
    M llvm/test/CodeGen/AMDGPU/frame-setup-without-sgpr-to-vgpr-spills.ll
    M llvm/test/CodeGen/AMDGPU/local-stack-alloc-block-sp-reference.ll
    M llvm/test/CodeGen/AMDGPU/pei-reg-scavenger-position.mir
    M llvm/test/CodeGen/AMDGPU/pei-scavenge-vgpr-spill.mir
    M llvm/test/CodeGen/AMDGPU/scratch-simple.ll
    M llvm/test/CodeGen/AMDGPU/sgpr-spill-to-vmem-scc-clobber.mir
    M llvm/test/CodeGen/AMDGPU/sgpr-spill-vmem-large-frame.mir
    M llvm/test/CodeGen/AMDGPU/sgpr-spill.mir
    M llvm/test/CodeGen/AMDGPU/sgpr-spills-split-regalloc.ll
    M llvm/test/CodeGen/AMDGPU/spill-offset-calculation.ll
    M llvm/test/CodeGen/AMDGPU/spill-scavenge-offset.ll
    M llvm/test/CodeGen/AMDGPU/spill-special-sgpr.mir
    M llvm/test/CodeGen/AMDGPU/vgpr-spill-scc-clobber.mir

  Log Message:
  -----------
  PEI should be able to use backward walk in replaceFrameIndicesBackward.

The backward register scavenger has correct register
liveness information. PEI should leverage the backward register scavenger.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D137574