[Bug tree-optimization/110311] [14 Regression] regression in tree-optimizer

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110311

--- Comment #20 from anlauf at gcc dot gnu.org ---
If that doesn't help: there appear to be recent optimizations for divmod.
Try declaring a1, a2 as volatile.