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From: "jakub at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/27285] [4.1 regression] ivopts postgresql miscompilation Date: Thu, 04 May 2006 06:40:00 -0000 [thread overview] Message-ID: <20060504064025.12917.qmail@sourceware.org> (raw) In-Reply-To: <bug-27285-87@http.gcc.gnu.org/bugzilla/> ------- Comment #6 from jakub at gcc dot gnu dot org 2006-05-04 06:40 ------- Subject: Bug 27285 Author: jakub Date: Thu May 4 06:40:15 2006 New Revision: 113515 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=113515 Log: PR tree-optimization/27285 Backport from mainline: 2006-03-28 Zdenek Dvorak <dvorakz@suse.cz> PR tree-optimization/25985 * tree-ssa-loop-niter.c (number_of_iterations_le, number_of_iterations_ne): Make comments more precise. (number_of_iterations_cond): Add only_exit argument. Use the fact that signed variables do not overflow only when only_exit is true. (loop_only_exit_p): New. (number_of_iterations_exit): Pass result of loop_only_exit_p to number_of_iterations_cond. * gcc.c-torture/execute/pr27285.c: New test. Added: branches/gcc-4_1-branch/gcc/testsuite/gcc.c-torture/execute/pr27285.c Modified: branches/gcc-4_1-branch/gcc/ChangeLog branches/gcc-4_1-branch/gcc/testsuite/ChangeLog branches/gcc-4_1-branch/gcc/tree-ssa-loop-niter.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27285
next prev parent reply other threads:[~2006-05-04 6:40 UTC|newest] Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top 2006-04-24 15:33 [Bug tree-optimization/27285] New: " jakub at gcc dot gnu dot org 2006-04-24 15:50 ` [Bug tree-optimization/27285] " jakub at gcc dot gnu dot org 2006-04-24 16:18 ` pinskia at gcc dot gnu dot org 2006-04-24 21:40 ` pinskia at gcc dot gnu dot org 2006-04-24 21:41 ` pinskia at gcc dot gnu dot org 2006-04-25 7:37 ` jakub at gcc dot gnu dot org 2006-05-04 6:40 ` jakub at gcc dot gnu dot org [this message] 2006-05-04 6:44 ` jakub at gcc dot gnu dot org 2006-05-08 15:30 ` roger at eyesopen dot com
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