[PATCH] D122299: [InstCombine] Fix missing nsw flag when fold -(x-y) to y-x

[chenglin.bi via Phabricator via llvm-commits]

bcl5980 added a comment.

Thanks again @lebedev.ri. I will update the code to

  bool NSW = I->hasNoSignedWrap() && HasNSW && IsTrulyNegation && Depth == 0;
  return Builder.CreateSub(I->getOperand(1), I->getOperand(0),
                           I->getName() + ".neg", false, NSW);

but if there is no other comments I prefer to abandon it.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D122299/new/

https://reviews.llvm.org/D122299