[PATCH] D63464: AMDGPU: Insert mem_viol check loop around GWS pre-GFX9

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added reviewers: rampitec, b-sumner.
Herald added subscribers: t-tye, tpr, dstuttard, yaxunl, nhaehnle, wdng, jvesely, kzhuravl.

It is necessary to emit this loop around GWS operations in case the
wave is preempted pre-GFX9.


https://reviews.llvm.org/D63464

Files:
  lib/Target/AMDGPU/AMDGPUSubtarget.h
  lib/Target/AMDGPU/DSInstructions.td
  lib/Target/AMDGPU/SIDefines.h
  lib/Target/AMDGPU/SIISelLowering.cpp
  lib/Target/AMDGPU/SIISelLowering.h
  test/CodeGen/AMDGPU/llvm.amdgcn.ds.gws.barrier.ll
  test/CodeGen/AMDGPU/llvm.amdgcn.ds.gws.init.ll

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