https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98226
--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> --- The generated code hasn't changed between gcc-10 and gcc-11 though, so the difference must be in the code used to run the benchmarks, not the code under test. See https://godbolt.org/z/bWeMen