https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89557
--- Comment #8 from Jan Ziak (http://atom-symbol.net) <0xe2.0x9a.0x9b at gmail dot com> --- Testcase (a.cc) benchmark results. See attached Makefile for further information about compiler options. Machine 1: Ryzen 5 1600 Six-Core Processor: a0-7.4: 0.753795user ag-7.4: 0.313097user a1-7.4: 0.281629user a0-8.3: 0.739894user ag-8.3: 0.954584user <-- performance issue in respect to ag-7.4 a1-8.3: 0.281554user a3-8.3: 0.224067user ag-7.4n: 1.032364user <-- performance issue in respect to ag-7.4 ag-8.3n: 1.007429user <-- performance issue in respect to ag-7.4 Machine 2: Intel(R) Xeon(R) CPU E5-2676 v3: a0-7.4: 1.02user ag-7.4: 0.37user a1-7.4: 0.34user a0-8.3: 1.01user ag-8.3: 0.95user <-- performance issue in respect to a1-7.4 a1-8.3: 0.34user a3-8.3: 0.27user ag-7.4n (-march=znver1): 1.05user <-- performance issue in respect to ag-7.4 ag-8.3n (-march=znver1): 0.99user <-- performance issue in respect to ag-7.4 Machine 3: Intel(R) Celeron(R) CPU N2930: a0-7.4: 2.223435user ag-7.4: 1.017597user a1-7.4: 0.741288user a0-8.3: 2.224145user ag-8.3: 1.620879user <-- performance issue in respect to ag-7.4 a1-8.3: 1.014488user <-- performance regression in respect to a1-7.4 a3-8.3: 0.885718user <-- performance regression in respect to a1-7.4 ag-7.4n (-march=znver1): n/a ag-8.3n (-march=znver1): n/a
