https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109605
Bug ID: 109605 Summary: -fno-tree-vectorize does not disable vectorizer Product: gcc Version: 13.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: hubicka at gcc dot gnu.org Target Milestone: --- -ftree-vectorize enables -ftree-slp-vectorize and -ftree-loop-vectorize however -fno-tree-vectorize does not disable them. This is quite counter-intuitive and at least I got caught in this trap while doing some benchmarking.