https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123826
--- Comment #8 from Hongtao Liu <liuhongt at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #7) > (In reply to Hongtao Liu from comment #6) > > I saw 2 benchmarks in next SPECcpu regressed by ~20% for O2 performance due > > to r16-7264. > > Yes that is expected if they use pow directly as that means the change is > doing the correct thing of calling pow directly instead of doing a*a. Have > you debugged it further to see if pow was called directly? Yes, now it generates more libcall instead of a*a and regressed performance.
