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From: "dizhao at os dot amperecomputing.com" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/98350] Reassociation breaks FMA chains Date: Thu, 23 Mar 2023 04:22:37 +0000 [thread overview] Message-ID: <bug-98350-4-0ErOPIpPcO@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-98350-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98350 --- Comment #4 from Di Zhao <dizhao at os dot amperecomputing.com> --- I've found the same problem with gcc-12 and gcc-13 (trunk). By improving the workaround in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84114, more FMAs can be inserted for vector mode. For the testcase in this tracker, 6 "fmla" can be generated with attachment 54735. The compile option I used is "-Ofast -mcpu=neoverse-n1".
next prev parent reply other threads:[~2023-03-23 4:22 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-12-17 15:24 [Bug tree-optimization/98350] New: " ktkachov at gcc dot gnu.org 2021-01-05 8:31 ` [Bug tree-optimization/98350] " rguenth at gcc dot gnu.org 2021-09-06 18:40 ` pinskia at gcc dot gnu.org 2023-03-23 4:16 ` dizhao at os dot amperecomputing.com 2023-03-23 4:22 ` dizhao at os dot amperecomputing.com [this message] 2023-05-19 7:24 ` pinskia at gcc dot gnu.org 2023-05-30 6:03 ` cvs-commit at gcc dot gnu.org
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