[PATCH] D49288: [AMDGPU] run post-RA hazard recognizer pass after memory legalizer, waitcnt passes

[Mark Searles via Phabricator via llvm-commits]

msearles created this revision.
msearles added reviewers: rampitec, t-tye.
msearles added a project: AMDGPU.
Herald added subscribers: tpr, dstuttard, yaxunl, nhaehnle, wdng, kzhuravl, arsenm.

Memory legalizer and waitcnt passes can perturb the instructions, which means that the post-RA hazard recognizer pass should run after them. Otherwise, one of those passes may invalidate the work done by the hazard recognizer.


https://reviews.llvm.org/D49288

Files:
  lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
  lib/Target/AMDGPU/SIMemoryLegalizer.cpp
  test/CodeGen/AMDGPU/llvm.amdgcn.mov.dpp.ll
  test/CodeGen/AMDGPU/llvm.amdgcn.update.dpp.ll
  test/CodeGen/AMDGPU/memory_clause.ll

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