Nikolai Bozhenov 03edcd68dd [SCEV] Return zero from computeConstantDifference(X, X) ...

Without this patch computeConstantDifference returns None for cases like
these:

  computeConstantDifference(%x, %x)
  computeConstantDifference({%x,+,16}, {%x,+,16})

Differential Revision: https://reviews.llvm.org/D65474

llvm-svn: 368193

2019-08-07 17:38:38 +00:00

474 KiB

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