https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91634
Bug ID: 91634 Summary: [10 Regression] 508.namd_r (and 435.gromacs) speed regression after r274994 Product: gcc Version: 10.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: marxin at gcc dot gnu.org CC: uros at gcc dot gnu.org Blocks: 26163 Target Milestone: --- Host: x86_64-linux-gnu After the revision I see quite some regressions on -march=skylake: https://lnt.opensuse.org/db_default/v4/SPEC/graph?plot.0=28.447.0&plot.1=7.90.0 Similarly with different tuning options. Referenced Bugs: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=26163 [Bug 26163] [meta-bug] missed optimization in SPEC (2k17, 2k and 2k6 and 95)