[Bug middle-end/118258] dead code causes missed optimization at -O2

[sjames at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118258

--- Comment #1 from Sam James <sjames at gcc dot gnu.org> ---
I think it's a dupe of your PR116906. Fix bisects to r15-3985-gde25f1729d212c.