[PATCH] D69977: [InstCombine] avoid crash from deleting an instruction that still has uses (PR43723)

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

I'd be more comfortable if we actually verified the uses of the invariant.start.

(As far as I can tell, the other possible instructions/intrinsics are either explicitly handled, or have a void return value.)


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https://reviews.llvm.org/D69977