https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104114
Bug ID: 104114 Summary: vect.exp fails when run with -Wvector-operation-performance due to bogus diagnostics Product: gcc Version: 12.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: rguenth at gcc dot gnu.org Target Milestone: --- On x86_64 running the vect.exp tests with additional -Wvector-operation-performance FAIL: gcc.dg/vect/vect-cond-11.c (test for excess errors) FAIL: gcc.dg/vect/vect-cond-11.c -flto -ffat-lto-objects (test for excess errors ) which is because vector lowering diagnoses decomposing V1SImode operations (it probably should not do that). FAIL: gcc.dg/vect/vect-singleton_1.c (test for excess errors) FAIL: gcc.dg/vect/vect-singleton_1.c -flto -ffat-lto-objects (test for excess errors) for the very same reason.