[PATCH] D54226: AMDGPU/InsertWaitcnts: Untangle some semi-global state

[Nicolai Hähnle via Phabricator via llvm-commits]

nhaehnle updated this revision to Diff 173327.
nhaehnle added a comment.

Turns out I was a bit too quick in my analysis of the second point.
I thought the overly conservative waitcnt was due to the control flow
in the shader I was looking at, but it was actually due to a pre-existing
waitcnt.


Repository:
  rL LLVM

https://reviews.llvm.org/D54226

Files:
  lib/Target/AMDGPU/SIInsertWaitcnts.cpp
  lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.cpp
  lib/Target/AMDGPU/Utils/AMDGPUBaseInfo.h
  test/CodeGen/AMDGPU/smrd-vccz-bug.ll
  test/CodeGen/AMDGPU/vccz-corrupt-bug-workaround.mir
  test/CodeGen/AMDGPU/waitcnt-preexisting.mir

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