* [Bug tree-optimization/43213] [4.5 Regression] Worse code generated with -O2
2010-02-28 19:54 [Bug tree-optimization/43213] New: [4.5 Regression] Worse code generated with -O2 d dot g dot gorbachev at gmail dot com
@ 2010-02-28 19:58 ` d dot g dot gorbachev at gmail dot com
2010-02-28 19:58 ` d dot g dot gorbachev at gmail dot com
` (5 subsequent siblings)
6 siblings, 0 replies; 9+ messages in thread
From: d dot g dot gorbachev at gmail dot com @ 2010-02-28 19:58 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from d dot g dot gorbachev at gmail dot com 2010-02-28 19:57 -------
Created an attachment (id=19990)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19990&action=view)
Poor code
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43213
^ permalink raw reply [flat|nested] 9+ messages in thread* [Bug tree-optimization/43213] [4.5 Regression] Worse code generated with -O2
2010-02-28 19:54 [Bug tree-optimization/43213] New: [4.5 Regression] Worse code generated with -O2 d dot g dot gorbachev at gmail dot com
2010-02-28 19:58 ` [Bug tree-optimization/43213] " d dot g dot gorbachev at gmail dot com
@ 2010-02-28 19:58 ` d dot g dot gorbachev at gmail dot com
2010-03-01 10:29 ` rguenth at gcc dot gnu dot org
` (4 subsequent siblings)
6 siblings, 0 replies; 9+ messages in thread
From: d dot g dot gorbachev at gmail dot com @ 2010-02-28 19:58 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from d dot g dot gorbachev at gmail dot com 2010-02-28 19:58 -------
Created an attachment (id=19991)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19991&action=view)
C source
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43213
^ permalink raw reply [flat|nested] 9+ messages in thread* [Bug tree-optimization/43213] [4.5 Regression] Worse code generated with -O2
2010-02-28 19:54 [Bug tree-optimization/43213] New: [4.5 Regression] Worse code generated with -O2 d dot g dot gorbachev at gmail dot com
2010-02-28 19:58 ` [Bug tree-optimization/43213] " d dot g dot gorbachev at gmail dot com
2010-02-28 19:58 ` d dot g dot gorbachev at gmail dot com
@ 2010-03-01 10:29 ` rguenth at gcc dot gnu dot org
2010-03-01 10:38 ` Andrew Pinski
2010-03-01 10:38 ` pinskia at gmail dot com
` (3 subsequent siblings)
6 siblings, 1 reply; 9+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2010-03-01 10:29 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from rguenth at gcc dot gnu dot org 2010-03-01 10:29 -------
Huh. Confirmed.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2010-03-01 10:29:21
date| |
Target Milestone|--- |4.5.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43213
^ permalink raw reply [flat|nested] 9+ messages in thread* Re: [Bug tree-optimization/43213] [4.5 Regression] Worse code generated with -O2
2010-03-01 10:29 ` rguenth at gcc dot gnu dot org
@ 2010-03-01 10:38 ` Andrew Pinski
0 siblings, 0 replies; 9+ messages in thread
From: Andrew Pinski @ 2010-03-01 10:38 UTC (permalink / raw)
To: gcc-bugzilla; +Cc: gcc-bugs
Sent from my iPhone
On Mar 1, 2010, at 2:29 AM, "rguenth at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org
> wrote:
>
>
> ------- Comment #3 from rguenth at gcc dot gnu dot org 2010-03-01
> 10:29 -------
> Huh. Confirmed.
Not that interesting because the aliasing sets are different and we
made 4.5 work for c++ code dealing with dynamic types.
>
>
> --
>
> rguenth at gcc dot gnu dot org changed:
>
> What |Removed |Added
> ---
> ---
> ----------------------------------------------------------------------
> Status|UNCONFIRMED |NEW
> Ever Confirmed|0 |1
> Last reconfirmed|0000-00-00 00:00:00 |2010-03-01 10:29:21
> date| |
> Target Milestone|--- |4.5.0
>
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43213
>
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/43213] [4.5 Regression] Worse code generated with -O2
2010-02-28 19:54 [Bug tree-optimization/43213] New: [4.5 Regression] Worse code generated with -O2 d dot g dot gorbachev at gmail dot com
` (2 preceding siblings ...)
2010-03-01 10:29 ` rguenth at gcc dot gnu dot org
@ 2010-03-01 10:38 ` pinskia at gmail dot com
2010-03-01 10:48 ` rguenth at gcc dot gnu dot org
` (2 subsequent siblings)
6 siblings, 0 replies; 9+ messages in thread
From: pinskia at gmail dot com @ 2010-03-01 10:38 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from pinskia at gmail dot com 2010-03-01 10:38 -------
Subject: Re: [4.5 Regression] Worse code generated with -O2
Sent from my iPhone
On Mar 1, 2010, at 2:29 AM, "rguenth at gcc dot gnu dot org"
<gcc-bugzilla@gcc.gnu.org
> wrote:
>
>
> ------- Comment #3 from rguenth at gcc dot gnu dot org 2010-03-01
> 10:29 -------
> Huh. Confirmed.
Not that interesting because the aliasing sets are different and we
made 4.5 work for c++ code dealing with dynamic types.
>
>
> --
>
> rguenth at gcc dot gnu dot org changed:
>
> What |Removed |Added
> ---
> ---
> ----------------------------------------------------------------------
> Status|UNCONFIRMED |NEW
> Ever Confirmed|0 |1
> Last reconfirmed|0000-00-00 00:00:00 |2010-03-01 10:29:21
> date| |
> Target Milestone|--- |4.5.0
>
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43213
>
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43213
^ permalink raw reply [flat|nested] 9+ messages in thread* [Bug tree-optimization/43213] [4.5 Regression] Worse code generated with -O2
2010-02-28 19:54 [Bug tree-optimization/43213] New: [4.5 Regression] Worse code generated with -O2 d dot g dot gorbachev at gmail dot com
` (3 preceding siblings ...)
2010-03-01 10:38 ` pinskia at gmail dot com
@ 2010-03-01 10:48 ` rguenth at gcc dot gnu dot org
2010-03-01 12:57 ` rguenth at gcc dot gnu dot org
2010-03-01 12:57 ` rguenth at gcc dot gnu dot org
6 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2010-03-01 10:48 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from rguenth at gcc dot gnu dot org 2010-03-01 10:48 -------
I have a patch.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |rguenth at gcc dot gnu dot
|dot org |org
Status|NEW |ASSIGNED
Last reconfirmed|2010-03-01 10:29:21 |2010-03-01 10:48:41
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43213
^ permalink raw reply [flat|nested] 9+ messages in thread* [Bug tree-optimization/43213] [4.5 Regression] Worse code generated with -O2
2010-02-28 19:54 [Bug tree-optimization/43213] New: [4.5 Regression] Worse code generated with -O2 d dot g dot gorbachev at gmail dot com
` (4 preceding siblings ...)
2010-03-01 10:48 ` rguenth at gcc dot gnu dot org
@ 2010-03-01 12:57 ` rguenth at gcc dot gnu dot org
2010-03-01 12:57 ` rguenth at gcc dot gnu dot org
6 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2010-03-01 12:57 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from rguenth at gcc dot gnu dot org 2010-03-01 12:56 -------
Fixed.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43213
^ permalink raw reply [flat|nested] 9+ messages in thread* [Bug tree-optimization/43213] [4.5 Regression] Worse code generated with -O2
2010-02-28 19:54 [Bug tree-optimization/43213] New: [4.5 Regression] Worse code generated with -O2 d dot g dot gorbachev at gmail dot com
` (5 preceding siblings ...)
2010-03-01 12:57 ` rguenth at gcc dot gnu dot org
@ 2010-03-01 12:57 ` rguenth at gcc dot gnu dot org
6 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2010-03-01 12:57 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from rguenth at gcc dot gnu dot org 2010-03-01 12:57 -------
Subject: Bug 43213
Author: rguenth
Date: Mon Mar 1 12:56:44 2010
New Revision: 157142
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=157142
Log:
2010-03-01 Richard Guenther <rguenther@suse.de>
PR middle-end/43213
* expr.c (expand_assignment): Use the alias-oracle to tell
if the rhs aliases the result decl.
* gcc.dg/pr43213.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/pr43213.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/expr.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43213
^ permalink raw reply [flat|nested] 9+ messages in thread