https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114978
--- Comment #12 from Chen Chen <chz0808 at gmail dot com> --- (In reply to chenglulu from comment #11) > (In reply to Chen Chen from comment #0) > > We tested Loongarch64 CPU Loongson 3A6000 with "LA664" architecture in Linux > > operating system AOSC OS 11.4.0 (default gcc version is 13.2.0). And we > > found the 548.exchange2_r benchmark from SPEC 2017 INTrate suite suffered > > significant regressions from 14% to 28% with various compiling options. > > > > The rate-1 results are following: > > > > after snapshot 20240317 score 14.3-19.3% lower with parameters "-g -Ofast > > -march=native": > > 13.2.0: 11.7 (223s) [gcc 13.2.0, system default] > Hi： > > I can't reproduce the score of r13.2. Have you made any modifications there? No. I used system default gcc. How big is the difference? A little fluctuation is normal. I once got scores 11.3(232s)、11.5(227s) with parameters "-g -Ofast -march=native" in previous tests too. To be fair, in each test presented above I always free page cache by the command "echo 3 > /proc/sys/vm/drop_caches" and then run the test.
