[PATCH] D30665: [InstSimplify] vector div/rem with any zero element in divisor is undef

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

The logic goes something like this: division by zero is undefined behavior, therefore the instruction is unreachable, therefore we can replace all uses with undef.


https://reviews.llvm.org/D30665