[PATCH] D59778: AMDGPU: Make exec mask optimzations more resistant to block splits

[Matt Arsenault via Phabricator via llvm-commits]

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

Also improve the check for SALU instructions to also ignore
implicit_def and other fake instructions.


https://reviews.llvm.org/D59778

Files:
  lib/Target/AMDGPU/SIInstrInfo.cpp
  lib/Target/AMDGPU/SIInstrInfo.h
  lib/Target/AMDGPU/SIOptimizeExecMaskingPreRA.cpp
  test/CodeGen/AMDGPU/collapse-endcf.mir

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