https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92980
--- Comment #8 from Hongtao.liu <crazylht at gmail dot com> --- (In reply to Andrew Pinski from comment #4) > But that is not true any more. So I think this optimization can be removed > as it is too early. Just double check the above testcase and the C++ > testcase (g++.dg/opt/ptrintsum1.C) to make sure they still work and post > that removal. This optimization is most likely causing other missed > optimizations already too. So I would compile SPEC to see if there is any > differences; my bet you might find some. No big impact for SPEC2017, more or less like noise. 500.perlbench_r 0.21% 502.gcc_r 0.14% 505.mcf_r -0.40% 520.omnetpp_r -0.47% 523.xalancbmk_r -1.20% 525.x264_r -1.26% 531.deepsjeng_r -0.05% 541.leela_r -0.39% 548.exchange2_r -0.09% 557.xz_r -0.16% geomean for intrate -0.37% 503.bwaves_r -0.19% 507.cactuBSSN_r 0.23% 508.namd_r -0.12% 510.parest_r 0.18% 511.povray_r -0.30% 519.lbm_r BuildSame #VALUE! 521.wrf_r -0.01% 526.blender_r -0.44% 527.cam4_r -0.17% 538.imagick_r 0.47% 544.nab_r -1.00% 549.fotonik3d_r 0.09% 554.roms_r 0.28% geomean for fprate -0.08% geomean -0.21%
