[PATCH] D123819: [InstCombine] Fold strlen and strnlen recursively.

[Martin Sebor via Phabricator via llvm-commits]

msebor added a comment.

> ...cases that the `strlen` folding cannot handle (arrays with embedded nuls where the bound is less than the length of any of the substrings).

Whoops, that was a thinko.  Those are cases that `strnlen` //cannot// safely handle.  Those it can handle that `strlen` can't are unterminated arrays with variable offsets.


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  https://reviews.llvm.org/D123819/new/

https://reviews.llvm.org/D123819