1. 2019-07-31 [Bug rtl-optimization/88233] combine fails to merge i gcc-bugs segher at gcc dot 2. 2019-07-08 [Bug rtl-optimization/88233] combine fails to merge i gcc-bugs segher at gcc dot 3. 2019-07-08 [Bug rtl-optimization/88233] combine fails to merge i gcc-bugs segher at gcc dot 4. 2019-07-04 [Bug rtl-optimization/88233] combine fails to merge i gcc-bugs segher at gcc dot 5. 2018-11-28 [Bug rtl-optimization/88233] combine fails to merge i gcc-bugs segher at gcc dot