[Bug tree-optimization/61056] strchr (x, 0) is not converted to strlen (x)

[olegendo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61056

--- Comment #3 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Just for reference
https://gcc.gnu.org/ml/gcc-patches/2016-04/msg00870.html