[PATCH] D157719: [AMDGPU] [SIFrameLowering] Replace LivePhysRegs with LiveRegUnits

[Pranav Taneja via Phabricator via llvm-commits]

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SIFrameLowering currently uses the LivePhysRegs utility class to 
track the liveness of registers. The LiveRegUnits appear to be a
better design that works on register units and expected to be a
slightly more compile time efficient, especially for targets that
have register tuples.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D157719

Files:
  llvm/include/llvm/CodeGen/LiveRegUnits.h
  llvm/lib/CodeGen/LiveRegUnits.cpp
  llvm/lib/Target/AMDGPU/SIFrameLowering.cpp
  llvm/lib/Target/AMDGPU/SIFrameLowering.h
  llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
  llvm/lib/Target/AMDGPU/SIRegisterInfo.h

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