[PATCH] D120544: [AMDGPU] Omit unnecessary waitcnt before barriers

[Austin Kerbow via Phabricator via llvm-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rG8d0c34fd4fb6: [AMDGPU] Omit unnecessary waitcnt before barriers (authored by kerbowa).

Changed prior to commit:
  https://reviews.llvm.org/D120544?vs=412935&id=413494#toc

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D120544/new/

https://reviews.llvm.org/D120544

Files:
  llvm/lib/Target/AMDGPU/AMDGPU.td
  llvm/lib/Target/AMDGPU/GCNSubtarget.h
  llvm/lib/Target/AMDGPU/SIInsertWaitcnts.cpp
  llvm/test/CodeGen/AMDGPU/back-off-barrier-subtarget-feature.ll
  llvm/test/CodeGen/AMDGPU/waitcnt-preexisting-vscnt.mir
  llvm/test/CodeGen/AMDGPU/waitcnt-vscnt.ll

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