[all-commits] [llvm/llvm-project] 5bf2a9: [AMDGPU] Update VMEM scalar write hazard mitigatio...

[Carl Ritson via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 5bf2a9dd40dbba6dacbbe61f843d4d3a6f54f294
      https://github.com/llvm/llvm-project/commit/5bf2a9dd40dbba6dacbbe61f843d4d3a6f54f294
  Author: Carl Ritson <carl.ritson at amd.com>
  Date:   2020-07-16 (Thu, 16 Jul 2020)

  Changed paths:
    M llvm/lib/Target/AMDGPU/GCNHazardRecognizer.cpp
    M llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.div.fmas.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.end.cf.i32.ll
    M llvm/test/CodeGen/AMDGPU/atomic_optimizations_local_pointer.ll
    M llvm/test/CodeGen/AMDGPU/atomic_optimizations_pixelshader.ll
    M llvm/test/CodeGen/AMDGPU/cc-update.ll
    M llvm/test/CodeGen/AMDGPU/vgpr-descriptor-waterfall-loop-idom-update.ll
    M llvm/test/CodeGen/AMDGPU/vgpr-tuple-allocation.ll
    M llvm/test/CodeGen/AMDGPU/vmem-to-salu-hazard.mir
    M llvm/test/CodeGen/AMDGPU/wave32.ll

  Log Message:
  -----------
  [AMDGPU] Update VMEM scalar write hazard mitigation sequence

Using s_waitcnt_depctr 0xffe3 is potentially faster than v_nop.

Reviewed By: rampitec, foad

Differential Revision: https://reviews.llvm.org/D83872