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%