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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/39612] [4.4/4.5 Regression] Incorrect warning issued Re variable *is* used uninitialized in this function
Date: Sat, 25 Apr 2009 22:44:00 -0000 [thread overview]
Message-ID: <20090425224428.934.qmail@sourceware.org> (raw)
In-Reply-To: <bug-39612-17519@http.gcc.gnu.org/bugzilla/>
------- Comment #3 from rakdver at gcc dot gnu dot org 2009-04-25 22:44 -------
I cannot reproduce this in 4.5; all the unnecessary loads are removed.
> The fix is to avoid the load part of load-store-motion of course.
I've considered this, but it seems much easier to just let the unnecessary
loads be dce'd (detecting the unnecessary loads in lsm would basically
duplicate the work done by ssa update for the new variables. I thought about
doing the ssa update and then removing the loads that are unused, but since
that seems to happen anyway, there is not much point).
--
rakdver at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|rakdver at gcc dot gnu dot |unassigned at gcc dot gnu
|org |dot org
Status|ASSIGNED |NEW
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39612
next prev parent reply other threads:[~2009-04-25 22:44 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-02 4:32 [Bug c/39612] New: " tony at bakeyournoodle dot com
2009-04-02 4:35 ` [Bug c/39612] " tony at bakeyournoodle dot com
2009-04-02 9:44 ` [Bug tree-optimization/39612] [4.4/4.5 Regression] " rguenth at gcc dot gnu dot org
2009-04-03 17:41 ` rakdver at gcc dot gnu dot org
2009-04-14 9:50 ` jakub at gcc dot gnu dot org
2009-04-21 15:58 ` jakub at gcc dot gnu dot org
2009-04-25 22:44 ` rakdver at gcc dot gnu dot org [this message]
2009-04-26 17:34 ` [Bug tree-optimization/39612] [4.3/4.4/4.5 Regression] LIM inserts loads from uninitialized local memory rguenth at gcc dot gnu dot org
2009-04-26 18:37 ` rakdver at gcc dot gnu dot org
2009-04-26 18:45 ` rguenther at suse dot de
2009-04-27 7:24 ` jakub at gcc dot gnu dot org
2009-04-27 8:16 ` rguenther at suse dot de
2009-07-22 10:35 ` jakub at gcc dot gnu dot org
2009-10-05 20:10 ` pinskia at gcc dot gnu dot org
2009-10-15 12:56 ` jakub at gcc dot gnu dot org
2010-01-21 13:19 ` jakub at gcc dot gnu dot org
2010-03-03 20:21 ` pinskia at gcc dot gnu dot org
2010-04-30 8:56 ` [Bug tree-optimization/39612] [4.3/4.4/4.5/4.6 " jakub at gcc dot gnu dot org
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