[PATCH] D157977: [InstCombine] OptimizePointerDifference when a gep has phi ptr

[Biplob Mishra via Phabricator via llvm-commits]

bipmis added a comment.

Thanks for the review.
On further observation I see a lot of the optimization of similar kind happening in InstructionCombineCompares.
So a fold should allow for these optimzations to happen. I have made these in the patch https://reviews.llvm.org/D159499
Maybe it would be good to review this first. Thanks


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  https://reviews.llvm.org/D157977/new/

https://reviews.llvm.org/D157977