[Bug tree-optimization/52171] memcmp/strcmp/strncmp can be optimized when the result is tested for [in]equality with 0

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52171

--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think the gimple part isn't done fully?  Only single-char compares are
inlined?