[PATCH] D40091: [AMDGPU] Add options for waitcnt pass debugging; add instr count in debug output.

[Mark Searles via Phabricator via llvm-commits]

msearles created this revision.
Herald added subscribers: JDevlieghere, t-tye, tpr, dstuttard, yaxunl, nhaehnle, wdng, kzhuravl.

  -amdgpu-waitcnt-forcezero={1|0}  Force all waitcnt instrs to be emitted as s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
  -amdgpu-waitcnt-forceexp=<n>  Force emit a s_waitcnt expcnt(0) before the first <n> instrs
  -amdgpu-waitcnt-forcelgkm=<n> Force emit a s_waitcnt lgkmcnt(0) before the first <n> instrs
  -amdgpu-waitcnt-forcevm=<n>   Force emit a s_waitcnt vmcnt(0) before the first <n> instrs


https://reviews.llvm.org/D40091

Files:
  lib/Target/AMDGPU/SIInsertWaitcnts.cpp
  test/CodeGen/AMDGPU/waitcnt-debug.mir

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