[PATCH] D54128: Fix MachineInstr::findRegisterUseOperandIdx subreg checks

[Stanislav Mekhanoshin via Phabricator via llvm-commits]

rampitec updated this revision to Diff 172709.
rampitec edited the summary of this revision.
rampitec removed reviewers: junbuml, sbaranga, sdardis.
rampitec added a comment.

I have realized the old check was also needed, an instruction reads a register in both cases: if the operand is a subreg of a requested register or if it is a superreg.

With the new patch previous changes to other targets are gone. Therefor gone the ask to review their test changes.


https://reviews.llvm.org/D54128

Files:
  lib/CodeGen/MachineInstr.cpp
  test/CodeGen/AMDGPU/optimize-if-exec-masking.mir

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