[Bug tree-optimization/123079] wrong code at -O{2,3} with "-fno-tree-fre -fselective-scheduling -fno-tree-dce -fno-tree-tail-merge -fschedule-insns -fno-ssa-phiopt" on x86_64-linux-gnu

[zhendong.su at inf dot ethz.ch]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123079

--- Comment #2 from Zhendong Su <zhendong.su at inf dot ethz.ch> ---
It might be related to PR 123048 and PR 122979.