[PATCH] D70379: [AMDGPU] Reserving VGPR for future SGPR Spill

[Saiyedul Islam via Phabricator via llvm-commits]

saiislam updated this revision to Diff 263220.
saiislam added a comment.

Switched the nested loops in lowerShiftReservedVGPR() to move
sorting of unique live-ins to the outer loop. Improved cleanup of
reserved vgpr after lowering it to a lower value, and when it needs
to be removed.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D70379/new/

https://reviews.llvm.org/D70379

Files:
  llvm/lib/Target/AMDGPU/SIISelLowering.cpp
  llvm/lib/Target/AMDGPU/SILowerSGPRSpills.cpp
  llvm/lib/Target/AMDGPU/SIMachineFunctionInfo.cpp
  llvm/lib/Target/AMDGPU/SIMachineFunctionInfo.h
  llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
  llvm/lib/Target/AMDGPU/SIRegisterInfo.h
  llvm/test/CodeGen/AMDGPU/reserve-vgpr-for-sgpr-spill.ll

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