[PATCH] D95865: [AMDGPU] Remove unused tmp register

[Sebastian Neubauer via Phabricator via llvm-commits]

sebastian-ne created this revision.
sebastian-ne added a reviewer: arsenm.
Herald added subscribers: hiraditya, t-tye, tpr, dstuttard, yaxunl, nhaehnle, jvesely, kzhuravl, qcolombet.
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The temporary register is only used to compute the frame pointer.
The frame pointer is overwritten and not used in between, so we
can reuse the frame pointer for the computation, saving one register.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D95865

Files:
  llvm/lib/Target/AMDGPU/SIFrameLowering.cpp
  llvm/test/CodeGen/AMDGPU/GlobalISel/dynamic-alloca-uniform.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/extractelement-stack-lower.ll
  llvm/test/CodeGen/AMDGPU/GlobalISel/non-entry-alloca.ll
  llvm/test/CodeGen/AMDGPU/callee-frame-setup.ll
  llvm/test/CodeGen/AMDGPU/local-stack-alloc-block-sp-reference.ll
  llvm/test/CodeGen/AMDGPU/non-entry-alloca.ll
  llvm/test/CodeGen/AMDGPU/pei-scavenge-sgpr-carry-out.mir
  llvm/test/CodeGen/AMDGPU/pei-scavenge-sgpr-gfx9.mir
  llvm/test/CodeGen/AMDGPU/pei-scavenge-sgpr.mir
  llvm/test/CodeGen/AMDGPU/pei-scavenge-vgpr-spill.mir
  llvm/test/CodeGen/AMDGPU/stack-realign.ll

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