[PATCH] D59295: [AMDGPU] Pre-allocate WWM registers to reduce VGPR pressure.

[Neil Henning via Phabricator via llvm-commits]

sheredom updated this revision to Diff 192842.
sheredom added a comment.

Found a fun little bug whereby the phys vgprs were being coalesced onto previous instructions, and then shouldClusterMemOps was assuming only virt regs. Added a workaround for that.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D59295/new/

https://reviews.llvm.org/D59295

Files:
  lib/Target/AMDGPU/AMDGPU.h
  lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
  lib/Target/AMDGPU/CMakeLists.txt
  lib/Target/AMDGPU/SIFixWWMLiveness.cpp
  lib/Target/AMDGPU/SIInstrInfo.cpp
  lib/Target/AMDGPU/SIInstructions.td
  lib/Target/AMDGPU/SIMachineFunctionInfo.h
  lib/Target/AMDGPU/SIPreAllocateWWMRegs.cpp
  lib/Target/AMDGPU/SIRegisterInfo.cpp
  lib/Target/AMDGPU/SIWholeQuadMode.cpp
  test/CodeGen/AMDGPU/atomic_optimizations_buffer.ll
  test/CodeGen/AMDGPU/atomic_optimizations_global_pointer.ll
  test/CodeGen/AMDGPU/atomic_optimizations_local_pointer.ll
  test/CodeGen/AMDGPU/atomic_optimizations_raw_buffer.ll
  test/CodeGen/AMDGPU/atomic_optimizations_struct_buffer.ll
  test/CodeGen/AMDGPU/fix-wwm-liveness.mir
  test/CodeGen/AMDGPU/indirect-addressing-term.ll
  test/CodeGen/AMDGPU/wqm.mir
  test/CodeGen/AMDGPU/wwm-reserved.ll

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