https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109858
Bug ID: 109858
Summary: r14-172 caused some SPEC2017 bmk to degrade on Power
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: linkw at gcc dot gnu.org
Target Milestone: ---
On Power9,
- at option -Ofast, 557.xz_r degraded -1.06%.
- at option -Ofast, 511.povray_r degraded -1.24%.
On Power10,
- at option -O2, 520.omnetpp_r degraded -1.84%.
I tried to run them in a few times, the gaps are stable. I've excluded those
one in +-1% as noises. The full data is listed below:
P9 O2:
500.perlbench_r 0.00%
502.gcc_r -0.20%
505.mcf_r 0.00%
520.omnetpp_r -0.30%
523.xalancbmk_r 0.00%
525.x264_r 0.00%
531.deepsjeng_r 0.00%
541.leela_r 0.00%
548.exchange2_r 0.00%
557.xz_r 0.00%
503.bwaves_r 0.00%
507.cactuBSSN_r 0.00%
508.namd_r -0.32%
510.parest_r 0.00%
511.povray_r 0.32%
519.lbm_r -0.16%
521.wrf_r 0.00%
526.blender_r 0.27%
527.cam4_r 0.00%
538.imagick_r 0.00%
544.nab_r 0.00%
549.fotonik3d_r 0.00%
554.roms_r 0.00%
P9 Ofast:
500.perlbench_r 0.00%
502.gcc_r 0.00%
505.mcf_r 0.00%
520.omnetpp_r 0.00%
523.xalancbmk_r 0.00%
525.x264_r 0.17%
531.deepsjeng_r 0.00%
541.leela_r 0.00%
548.exchange2_r 2.15%
557.xz_r -1.06%
503.bwaves_r 2.21%
507.cactuBSSN_r -0.20%
508.namd_r -0.33%
510.parest_r 0.00%
511.povray_r -1.24%
519.lbm_r 0.00%
521.wrf_r 0.19%
526.blender_r 0.00%
527.cam4_r 0.28%
538.imagick_r 0.32%
544.nab_r 0.00%
549.fotonik3d_r -0.83%
554.roms_r 1.33%
Power10 O2:
500.perlbench_r 0.00%
502.gcc_r 0.33%
505.mcf_r 0.55%
520.omnetpp_r -1.84%
523.xalancbmk_r 0.00%
525.x264_r 0.36%
531.deepsjeng_r 0.00%
541.leela_r 0.00%
548.exchange2_r 0.00%
557.xz_r 0.31%
503.bwaves_r 0.00%
507.cactuBSSN_r -0.31%
508.namd_r -0.22%
510.parest_r -0.64%
511.povray_r -0.86%
519.lbm_r -0.75%
521.wrf_r 0.20%
526.blender_r 0.20%
527.cam4_r 0.00%
538.imagick_r -0.15%
544.nab_r -0.18%
549.fotonik3d_r 0.00%
554.roms_r 0.00%
Power10 Ofast:
502.gcc_r 0.16%
505.mcf_r 0.00%
520.omnetpp_r 0.00%
523.xalancbmk_r 0.22%
525.x264_r 0.30%
531.deepsjeng_r 0.00%
541.leela_r 0.00%
548.exchange2_r 0.00%
557.xz_r 0.31%
503.bwaves_r -0.18%
507.cactuBSSN_r 0.00%
508.namd_r 0.22%
510.parest_r -0.52%
511.povray_r 0.00%
519.lbm_r 0.50%
521.wrf_r 0.00%
526.blender_r -0.80%
527.cam4_r 0.18%
538.imagick_r -0.11%
544.nab_r 0.17%
549.fotonik3d_r 0.63%
554.roms_r -0.63%
