[PATCH] D76135: [MachineLICM] Don't treat cross copies as cheap

[Dave Green via Phabricator via llvm-commits]

dmgreen updated this revision to Diff 250256.
dmgreen added a comment.

Thanks for the suggestion.

I made it call shouldRewriteCopySrc, which allows the target to modify things if it wishes. The AMDGPU/idiv-licm.ll test changed ever so slightly. Let me know if I should change things around to instead call shareSameRegisterFile more directly.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D76135/new/

https://reviews.llvm.org/D76135

Files:
  llvm/lib/CodeGen/MachineLICM.cpp
  llvm/test/CodeGen/AMDGPU/idiv-licm.ll
  llvm/test/CodeGen/AMDGPU/sdiv64.ll
  llvm/test/CodeGen/AMDGPU/sdwa-peephole.ll
  llvm/test/CodeGen/AMDGPU/srem64.ll
  llvm/test/CodeGen/AMDGPU/udiv64.ll
  llvm/test/CodeGen/AMDGPU/urem64.ll
  llvm/test/CodeGen/Thumb2/mve-floatregloops.ll
  llvm/test/CodeGen/Thumb2/mve-pred-threshold.ll

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