[Bug tree-optimization/122186] single_use is too much on some match patterns

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122186

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Via PR 124010, this shows up in SPEC xalancbmk.