[Bug rtl-optimization/91981] Speed degradation because of inlining a register clobbering function

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91981

--- Comment #3 from Segher Boessenkool <segher at gcc dot gnu.org> ---
So this works just fine with a compiler from a year ago.