[PATCH] D143759: [AMDGPU] Implement whole wave register spill

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


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Comment at: llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp:647
+  // SGPR used to preserve EXEC MASK around WWM spill/copy instructions.
+  Register ExecCopyReg = MFI->getSGPRForEXECCopy();
+  if (ExecCopyReg)
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D149775 is adding another reserved register, but I'm pretty sure they cannot contextually overlap. After both patches are in they should be consolidated to reuse the same reserved register


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D143759/new/

https://reviews.llvm.org/D143759