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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug target/103069] cmpxchg isn't optimized Date: Wed, 13 Apr 2022 08:18:00 +0000 [thread overview] Message-ID: <bug-103069-4-8bCSbQeAV7@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-103069-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103069 --- Comment #21 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Hongyu Wang <hongyuw@gcc.gnu.org>: https://gcc.gnu.org/g:522f25e90c781d284f8347a04940db8b41c42fd5 commit r12-8136-g522f25e90c781d284f8347a04940db8b41c42fd5 Author: Hongyu Wang <hongyu.wang@intel.com> Date: Wed Apr 13 14:51:36 2022 +0800 i386: Fix infinite loop under -mrelax-cmpxchg-loop [PR 103069] For -mrelax-cmpxchg-loop which relaxes atomic_fetch_<logic> loops, there is a missing set to %eax when compare fails, which would result in infinite loop in some benchmark. Add set to %eax to avoid it. gcc/ChangeLog: PR target/103069 * config/i386/i386-expand.cc (ix86_expand_cmpxchg_loop): Add missing set to target_val at pause label.
next prev parent reply other threads:[~2022-04-13 8:18 UTC|newest] Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-11-03 19:08 [Bug target/103069] New: " hjl.tools at gmail dot com 2021-11-03 20:53 ` [Bug target/103069] " thiago at kde dot org 2021-11-04 21:25 ` thiago at kde dot org 2021-11-15 11:10 ` cvs-commit at gcc dot gnu.org 2021-11-15 14:26 ` hjl.tools at gmail dot com 2021-11-18 8:31 ` cvs-commit at gcc dot gnu.org 2022-01-24 23:49 ` hjl.tools at gmail dot com 2022-01-24 23:52 ` hjl.tools at gmail dot com 2022-01-24 23:53 ` hjl.tools at gmail dot com 2022-01-24 23:55 ` hjl.tools at gmail dot com 2022-01-25 0:04 ` thiago at kde dot org 2022-02-15 8:59 ` wwwhhhyyy333 at gmail dot com 2022-02-22 3:36 ` cvs-commit at gcc dot gnu.org 2022-02-22 3:38 ` wwwhhhyyy333 at gmail dot com 2022-02-22 4:16 ` thiago at kde dot org 2022-02-22 8:21 ` wwwhhhyyy333 at gmail dot com 2022-02-22 18:05 ` thiago at kde dot org 2022-02-22 18:41 ` jakub at gcc dot gnu.org 2022-02-22 20:25 ` thiago at kde dot org 2022-02-23 3:35 ` wwwhhhyyy333 at gmail dot com 2022-02-23 4:06 ` thiago at kde dot org 2022-04-13 8:18 ` cvs-commit at gcc dot gnu.org [this message] 2022-05-06 8:31 ` jakub at gcc dot gnu.org 2023-05-08 12:23 ` rguenth at gcc dot gnu.org
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