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From: "amonakov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/108117] Wrong instruction scheduling on value coming from abnormal SSA Date: Thu, 15 Dec 2022 07:15:26 +0000 [thread overview] Message-ID: <bug-108117-4-wf093SVjrt@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-108117-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108117 Alexander Monakov <amonakov at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |amonakov at gcc dot gnu.org --- Comment #4 from Alexander Monakov <amonakov at gcc dot gnu.org> --- -Wclobbered properly warns here (and it's part of -Wextra). With explicit -fschedule-insns, reproducible on x86 as well. The reason for the issue is quite surprising though, I did not expect pre-RA scheduling to lift assignments to pseudos across calls, because it just increases register pressure at the point of the call for little or no gain.
next prev parent reply other threads:[~2022-12-15 7:15 UTC|newest] Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-12-15 5:36 [Bug rtl-optimization/108117] New: " fxue at os dot amperecomputing.com 2022-12-15 5:42 ` [Bug rtl-optimization/108117] " pinskia at gcc dot gnu.org 2022-12-15 5:44 ` pinskia at gcc dot gnu.org 2022-12-15 5:46 ` pinskia at gcc dot gnu.org 2022-12-15 7:15 ` amonakov at gcc dot gnu.org [this message] 2022-12-15 8:30 ` amonakov at gcc dot gnu.org 2022-12-15 8:54 ` fxue at os dot amperecomputing.com 2022-12-15 9:01 ` pinskia at gcc dot gnu.org 2022-12-15 11:38 ` fxue at os dot amperecomputing.com 2022-12-15 12:44 ` amonakov at gcc dot gnu.org 2022-12-15 18:04 ` pinskia at gcc dot gnu.org 2022-12-15 18:06 ` pinskia at gcc dot gnu.org 2022-12-15 18:17 ` amonakov at gcc dot gnu.org 2022-12-15 18:19 ` pinskia at gcc dot gnu.org 2022-12-15 18:26 ` amonakov at gcc dot gnu.org 2022-12-15 18:33 ` amonakov at gcc dot gnu.org 2022-12-23 7:37 ` amonakov at gcc dot gnu.org 2023-01-13 18:33 ` cvs-commit at gcc dot gnu.org
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