[PATCH] D130313: [AMDGPU] Avoid flushing the vmcnt counter in loop preheaders if not necessary

[Baptiste Saleil via Phabricator via llvm-commits]

bsaleil updated this revision to Diff 450885.
bsaleil added a comment.

Addressed review comments, added test cases with and without undef operands.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D130313/new/

https://reviews.llvm.org/D130313

Files:
  llvm/lib/Target/AMDGPU/SIInsertWaitcnts.cpp
  llvm/test/CodeGen/AMDGPU/waitcnt-vmcnt-loop.mir

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