[PATCH] D44833: [InstCombine] peek through bitcasted vector/array pointer GEP operand

[Sanjay Patel via Phabricator via llvm-commits]

spatel added a comment.

In https://reviews.llvm.org/D44833#1047184, @efriedma wrote:

> That said, I'm surprised this matters; most pointer-related optimizations look through bitcasts.


Yes, I think you're correct. I assumed the differing types might trip up the vectorizers, but at least SLP doesn't seem to care in the motivating example.

So not sure if we want to add code for this. It does still remove the bitcast from PR16739, so the IR shrinks even if we don't vectorize it as expected.


https://reviews.llvm.org/D44833