[PATCH] D63234: AMDGPU: Change API for checking for exec modification

[Matt Arsenault via Phabricator via llvm-commits]

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

Invert the name and return value to better reflect the imprecise
nature.

      

Force passing in the DefMI, since it's known in the 2 users and could
ossibly fail for an arbitrary vreg.

      

Allow specifying a specific user instruction. Scan through use
instructions, instead of use operands. Add scan thresholds instead of
searching infinitely.

      

Stop using a set to track seen uses. I didn't understand this usage,
or why it would not check the last use. I don't think the order of the
use list has any particular order.


https://reviews.llvm.org/D63234

Files:
  lib/Target/AMDGPU/GCNDPPCombine.cpp
  lib/Target/AMDGPU/SIFoldOperands.cpp
  lib/Target/AMDGPU/SIInstrInfo.cpp
  lib/Target/AMDGPU/SIInstrInfo.h

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