https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71232
Bug ID: 71232 Summary: [7 Regression] FAIL gnat.dg/vect[36].adb scan-tree-dump-times vect "vectorized 1 loops" 15 Product: gcc Version: 7.0 Status: UNCONFIRMED Keywords: missed-optimization Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: rguenth at gcc dot gnu.org CC: ebotcazou at gcc dot gnu.org, hubicka at gcc dot gnu.org Target Milestone: --- I am seeing Running target unix/ FAIL: gnat.dg/vect3.adb scan-tree-dump-times vect "vectorized 1 loops" 15 FAIL: gnat.dg/vect6.adb scan-tree-dump-times vect "vectorized 1 loops" 15 looking into the dumps this is caused by loop trip estimate changes. Not sure if the testcases are really having too low loop trip count or the change is causing a real-life regression (likely).