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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 tree-optimization/114551] [14 Regression] wrong code at -O3 on x86_64-linux-gnu since r14-2944 Date: Thu, 04 Apr 2024 07:00:20 +0000 [thread overview] Message-ID: <bug-114551-4-dvBaxwpMJW@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-114551-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114551 --- Comment #7 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>: https://gcc.gnu.org/g:e152177b362143465e2b9d721ea632cae3f13445 commit r14-9781-ge152177b362143465e2b9d721ea632cae3f13445 Author: Richard Biener <rguenther@suse.de> Date: Wed Apr 3 14:53:30 2024 +0200 tree-optimization/114551 - loop splitting and undefined overflow When loop splitting hoists a guard computation it needs to make sure that can be safely evaluated at this place when it was previously only conditionally evaluated. The following fixes this for the case of undefined overflow. PR tree-optimization/114551 * tree-ssa-loop-split.cc (split_loop): If the guard is only conditionally evaluated rewrite computations with possibly undefined overflow to unsigned arithmetic. * gcc.dg/torture/pr114551.c: New testcase.
next prev parent reply other threads:[~2024-04-04 7:00 UTC|newest] Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-04-01 19:31 [Bug tree-optimization/114551] New: wrong code at -O3 on x86_64-linux-gnu zhendong.su at inf dot ethz.ch 2024-04-01 20:45 ` [Bug tree-optimization/114551] [14 Regression] " pinskia at gcc dot gnu.org 2024-04-02 11:33 ` rguenth at gcc dot gnu.org 2024-04-02 13:22 ` jakub at gcc dot gnu.org 2024-04-02 23:43 ` [Bug tree-optimization/114551] [14 Regression] wrong code at -O3 on x86_64-linux-gnu since r14-2944 pinskia at gcc dot gnu.org 2024-04-03 3:44 ` pinskia at gcc dot gnu.org 2024-04-03 3:46 ` pinskia at gcc dot gnu.org 2024-04-03 12:27 ` rguenth at gcc dot gnu.org 2024-04-04 7:00 ` cvs-commit at gcc dot gnu.org [this message] 2024-04-04 7:01 ` [Bug tree-optimization/114551] [13 " rguenth at gcc dot gnu.org 2024-05-06 12:06 ` [Bug tree-optimization/114551] [14 " rguenth at gcc dot gnu.org
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