[PATCH] D80264: [Instruction] Set metadata uses to undef on deletion

[Vedant Kumar via Phabricator via llvm-commits]

vsk added a comment.

I forgot to add: a third alternative is to stop treating "dbg.value(metadata !{}, ...)" as trivially dead, but that seems not as nice, because then we'd have two representations for the same thing (c.f. "dbg.value(metadata <ty> undef, ...)".


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  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D80264/new/

https://reviews.llvm.org/D80264