[PATCH] D156671: [AMDGPU][SIInsertWaitcnts] Initialize the WaitcntBrackets for non-kernel functions

[Juan Manuel Martinez Caamaño via Phabricator via llvm-commits]

jmmartinez created this revision.
jmmartinez added reviewers: foad, rampitec.
Herald added subscribers: StephenFan, kerbowa, hiraditya, tpr, dstuttard, yaxunl, jvesely, kzhuravl, arsenm.
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jmmartinez requested review of this revision.
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Currently 0 is assumed as the initial value for the counters,
and waitcnt instructions are inserted at the begining of non-entry functions to enforce this.

This patch initializes the counters to their maximum value instead of 0.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D156671

Files:
  llvm/lib/Target/AMDGPU/SIInsertWaitcnts.cpp
  llvm/test/CodeGen/AMDGPU/amd.endpgm.ll
  llvm/test/CodeGen/AMDGPU/back-off-barrier-subtarget-feature.ll
  llvm/test/CodeGen/AMDGPU/waitcnt-overflow.mir

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