[PATCH] D95122: [Libcalls, Attrs] Annotate libcalls with noundef

[Dávid Bolvanský via Phabricator via llvm-commits]

xbolva00 added a comment.

Or just revert D87994 <https://reviews.llvm.org/D87994> if it blocks more optimizations than it allows..

We could patch clang, but llvm provides valuetracking’s “isKnownNonZero” which is useful and makes this more powerful.


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  https://reviews.llvm.org/D95122/new/

https://reviews.llvm.org/D95122