[PATCH] D130224: [Clang][Attribute] Introduce maybe_undef attribute for function arguments which accepts undef values

[Matt Arsenault via Phabricator via cfe-commits]

arsenm added a comment.

I can't see a scenario where we would need this with a variadic call. Ultimately these wrap specific physical instructions, not some kind of arbitrary call


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  https://reviews.llvm.org/D130224/new/

https://reviews.llvm.org/D130224