[Bug middle-end/110233] [12/13/14 Regression] Wrong code at -Os on x86_64-linux-gnu

[shaohua.li at inf dot ethz.ch via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110233

--- Comment #8 from Shaohua Li <shaohua.li at inf dot ethz.ch> ---
I tried to bisect it and I bisected it to r12-4871-g502ffb1f389