[Bug tree-optimization/92765] [10 Regression] Wrong code caused by folding of -Wstring-compare since r276773

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92765

--- Comment #21 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
There is no consensus on the #c0 testcase, but there are several other
testcases in this PR that are IMO unquestionably valid (or can be easily turned
into).