https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120476
--- Comment #1 from chenglulu <chenglulu at loongson dot cn> --- (In reply to Xi Ruoyao from comment #0) > Per > https://github.com/loongson-community/discussions/issues/94#issuecomment- > 2919912764: > > Spec int 2017 rate-1 with GCC 15.1.0 on 3C6000: > > -O3 -march=la464: 4.49 > -O3 -march=la664: 4.40 > -O3: 4.49 > > benchmark la464 la664 only O3 > perlbench 3.89 3.92 3.92 > gcc 4.15 4.12 4.13 > mcf 4.25 4.23 4.20 > omnetpp 4.52 4.33 4.52 > xalancbmk 3.47 3.66 3.46 > x264 8.86 8.53 9.09 > deepsjeng 3.26 3.23 3.25 > leela 3.21 3.20 3.20 > exchange2 12.1 10.4 12.2 > xz 2.73 2.72 2.75 > > And openssl-3.5.0 "openssl speed sha512" is substantially slower with > -mtune=la664 on 3A6000. This seems to be affected by the cost of movcf2gr and movgr2cf.
