[PATCH] D40231: InstructionSimplify: 'extractelement' with an undef index is undef

Zvi Rackover via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Mon Nov 20 23:00:45 PST 2017


zvi added a comment.

One option is to run llc with -O0 which will disable passes which use InstructionSimplify, but this will require changing the CHECK's to expect different generated code. If the purpose of the test is to not crash in the Verifier, are the CHECK's needed?


https://reviews.llvm.org/D40231





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