https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104058
Bug ID: 104058 Summary: [12 Regression] 6-7% x264_r regression with -march=native -Ofast -funroll-loops -flto on x86 since r12-6420-gd3ff7420e941931d32ce2e332e7968fe67ba20af Product: gcc Version: 12.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: admin at levyhsu dot com Target Milestone: --- We observed regression on 525.x264_r with commit d3ff7420e941931d32ce2e332e7968fe67ba20af On IceLake(8358): -7.27% On Zen3(7763): -6.67% On Zen3(5800x): -6.45% The regression on Zen 3 can also be found in https://lnt.opensuse.org/db_default/v4/SPEC/graph?highlight_run=22984&plot.0=475.377.0