[PATCH] D115747: [AMDGPU] Flush the vmcnt counter in loop preheader when necessary

[Baptiste Saleil via Phabricator via llvm-commits]

bsaleil updated this revision to Diff 438835.
bsaleil added a comment.

Addressed review comments: Use ranges in `for` loop and split `generateWaitcntInstBefore` to reuse its second half for `generateWaitcntBlockEnd`.
Also changed `applyPreexistingWaitcnt` to take a `MachineBasicBlock::instr_iterator` instead of a `MachineBasicBlock::iterator` to match the caller.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D115747/new/

https://reviews.llvm.org/D115747

Files:
  llvm/include/llvm/CodeGen/MachineBasicBlock.h
  llvm/lib/CodeGen/MachineBasicBlock.cpp
  llvm/lib/Target/AMDGPU/SIInsertWaitcnts.cpp
  llvm/test/CodeGen/AMDGPU/llc-pipeline.ll
  llvm/test/CodeGen/AMDGPU/waitcnt-vmcnt-loop.mir

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