https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105275
--- Comment #3 from Martin Jambor <jamborm at gcc dot gnu.org> --- I have re-checked this year again (using master revision r14-7200-g95440171d0e615) but this time on a high-frequency Zen3 CPU (EPYC 75F3). Run-time of 525.x264_r built with master with PGO and -O2 improved by 5.49% compared to GCC 13 and so compared to GCC 11 the regression dropped to 4.2%. Run-time of 538.imagick_r compiled with the same options and master is 5.8% slower on this CPU than when compiling it with GCC 11. With both PGO and LTO, 525.x264_r is now only 2.8% slower than GCC 11. In case of 538.imagick_r the regression is 2.01% on the zen4, but it is 7.49% on a zen4 machine :-/
