[PATCH] D157012: AMDGPU/GlobalISel: insert readfirstlane on SGPR inlineasm copy

[Vigneshwar Jayakumar via Phabricator via llvm-commits]

vjayakum created this revision.
vjayakum added reviewers: arsenm, bcahoon.
vjayakum added a project: AMDGPU.
Herald added subscribers: foad, kerbowa, hiraditya, tpr, dstuttard, yaxunl, jvesely, kzhuravl.
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vjayakum requested review of this revision.
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There are some copies from VGPR to SGPR while inlineasm lowering which causes illegal copy.
Inserting a readfirstlane for SGPR copy to avoid producing an illegal copy later incase the copy is from VGPR to SGPR


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D157012

Files:
  llvm/include/llvm/CodeGen/GlobalISel/InlineAsmLowering.h
  llvm/lib/CodeGen/GlobalISel/InlineAsmLowering.cpp
  llvm/lib/Target/AMDGPU/AMDGPUInlineAsmLowering.cpp
  llvm/lib/Target/AMDGPU/AMDGPUInlineAsmLowering.h
  llvm/lib/Target/AMDGPU/AMDGPUSubtarget.cpp
  llvm/lib/Target/AMDGPU/CMakeLists.txt
  llvm/lib/Target/AMDGPU/GCNSubtarget.h
  llvm/test/CodeGen/AMDGPU/GlobalISel/irtranslator-inline-asm.ll

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