1. 2019-10-01 [Bug middle-end/91606] [9/10 regression] Optimization gcc-bugs rguenth at gcc dot 2. 2019-09-30 [Bug middle-end/91606] [9/10 regression] Optimization gcc-bugs jakub at gcc dot g 3. 2019-09-30 [Bug middle-end/91606] [9/10 regression] Optimization gcc-bugs jakub at gcc dot g 4. 2019-08-30 [Bug middle-end/91606] [9/10 regression] Optimization gcc-bugs mpolacek at gcc do