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From: "rakdver at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/40087] [4.3/4.4 Regression] Number of iterations analysis wrong
Date: Fri, 22 May 2009 20:44:00 -0000	[thread overview]
Message-ID: <20090522204351.17512.qmail@sourceware.org> (raw)
In-Reply-To: <bug-40087-17694@http.gcc.gnu.org/bugzilla/>



------- Comment #12 from rakdver at gcc dot gnu dot org  2009-05-22 20:43 -------
Subject: Bug 40087

Author: rakdver
Date: Fri May 22 20:43:39 2009
New Revision: 147806

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=147806
Log:
        PR tree-optimization/40087
        * tree-ssa-loop-niter.c (number_of_iterations_ne_max,
        number_of_iterations_ne): Rename never_infinite argument.
        (number_of_iterations_lt_to_ne, number_of_iterations_lt,
        number_of_iterations_le): Handle pointer-type ivs when
        exit_must_be_taken is false.
        (number_of_iterations_cond):  Do not always assume that
        exit_must_be_taken if the control variable is a pointer.

        * gcc.dg/tree-ssa/pr40087.c: New test.


Added:
    branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/tree-ssa/pr40087.c
Modified:
    branches/gcc-4_4-branch/gcc/ChangeLog
    branches/gcc-4_4-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_4-branch/gcc/tree-ssa-loop-niter.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40087


  parent reply	other threads:[~2009-05-22 20:44 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-05-10  1:39 [Bug c/40087] New: Bad assembly for -O2 markus at cs dot wisc dot edu
2009-05-10  1:41 ` [Bug c/40087] " markus at cs dot wisc dot edu
2009-05-10  1:44 ` markus at cs dot wisc dot edu
2009-05-10  1:48 ` markus at cs dot wisc dot edu
2009-05-10  9:42 ` [Bug tree-optimization/40087] " rguenth at gcc dot gnu dot org
2009-05-10  9:53 ` [Bug tree-optimization/40087] [4.3/4.4/4.5 Regression] Number of iterations analysis wrong rguenth at gcc dot gnu dot org
2009-05-10 12:59 ` rakdver at gcc dot gnu dot org
2009-05-15  0:34 ` rakdver at gcc dot gnu dot org
2009-05-15  8:44 ` rguenther at suse dot de
2009-05-15 15:45 ` rakdver at kam dot mff dot cuni dot cz
2009-05-20  0:34 ` rakdver at gcc dot gnu dot org
2009-05-20  9:21 ` [Bug tree-optimization/40087] [4.3/4.4 " rguenth at gcc dot gnu dot org
2009-05-21 11:37 ` rguenth at gcc dot gnu dot org
2009-05-22 20:44 ` rakdver at gcc dot gnu dot org [this message]
2009-05-23  9:15 ` [Bug tree-optimization/40087] [4.3 " rguenth at gcc dot gnu dot org
2009-06-15 10:10 ` cnstar9988 at gmail dot com
2009-06-15 14:24 ` mikpe at it dot uu dot se
2009-06-17 15:12 ` rguenth at gcc dot gnu dot org
2009-06-17 19:46 ` rguenth at gcc dot gnu dot org
2009-06-17 19:46 ` rguenth at gcc dot gnu dot org
2009-06-17 19:49 ` rguenth at gcc dot gnu dot org

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