https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100328
--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Kewen Lin <li...@gcc.gnu.org>: https://gcc.gnu.org/g:c64d15224c6dc4dc3b6b3c2c6b6fd5c7e0e9c072 commit r12-2046-gc64d15224c6dc4dc3b6b3c2c6b6fd5c7e0e9c072 Author: Kewen Lin <li...@linux.ibm.com> Date: Mon Jul 5 20:54:16 2021 -0500 i386: Disable param ira-consider-dup-in-all-alts [PR100328] With Hongtao's SPEC2017 performance evaluation result here: https://gcc.gnu.org/pipermail/gcc-patches/2021-June/573986.html this new parameter ira-consider-dup-in-all-alts has negative effects on i386, this patch is to disable it explicitly on i386. Bootstrapped & regtested on x86_64-redhat-linux. gcc/ChangeLog: PR rtl-optimization/100328 * config/i386/i386-options.c (ix86_option_override_internal): Set param_ira_consider_dup_in_all_alts to 0.