[PATCH] D126895: [SLP] Phi inputs that come from an unreachable block should be undef.

[Fangrui Song via Phabricator via llvm-commits]

MaskRay accepted this revision.
MaskRay added a comment.
Herald added a subscriber: StephenFan.

Some SLPVectorizer changes near D114171 <https://reviews.llvm.org/D114171> exposed a miscompile issue. Thanks for tracking it down.


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https://reviews.llvm.org/D126895