* [Bug target/44031] [4.4/4.5 Regression] ice in subst_reloads, at reload.c:6327
[not found] <bug-44031-4@http.gcc.gnu.org/bugzilla/>
@ 2011-01-26 18:28 ` ebotcazou at gcc dot gnu.org
2011-01-26 22:45 ` law at redhat dot com
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From: ebotcazou at gcc dot gnu.org @ 2011-01-26 18:28 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44031
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ebotcazou at gcc dot
| |gnu.org
Known to work| |4.6.0
Target Milestone|4.6.0 |4.4.6
Summary|[4.4/4.5/4.6 Regression] |[4.4/4.5 Regression] ice in
|ice in subst_reloads, at |subst_reloads, at
|reload.c:6327 |reload.c:6327
Known to fail| |4.5.3
--- Comment #7 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-01-26 18:13:17 UTC ---
Works on the mainline, still fails on the 4.5 branch.
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[not found] <bug-44031-4@http.gcc.gnu.org/bugzilla/>
2011-01-26 18:28 ` [Bug target/44031] [4.4/4.5 Regression] ice in subst_reloads, at reload.c:6327 ebotcazou at gcc dot gnu.org
@ 2011-01-26 22:45 ` law at redhat dot com
2011-01-28 15:19 ` mikpe at it dot uu.se
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From: law at redhat dot com @ 2011-01-26 22:45 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44031
--- Comment #8 from Jeffrey A. Law <law at redhat dot com> 2011-01-26 22:11:55 UTC ---
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
On 01/26/11 11:14, ebotcazou at gcc dot gnu.org wrote:
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44031
>
> Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> CC| |ebotcazou at gcc dot
> | |gnu.org
> Known to work| |4.6.0
> Target Milestone|4.6.0 |4.4.6
> Summary|[4.4/4.5/4.6 Regression] |[4.4/4.5 Regression] ice in
> |ice in subst_reloads, at |subst_reloads, at
> |reload.c:6327 |reload.c:6327
> Known to fail| |4.5.3
>
> --- Comment #7 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-01-26 18:13:17 UTC ---
> Works on the mainline, still fails on the 4.5 branch.
FWIW, I have no idea which change might have fixed it on the trunk; more
likely than not it was by accident rather than by design. As such I
doubt there's a particular patch that could be pulled from the trunk and
applied to the 4.5 branch to resolve this issue.
jeff
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^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug target/44031] [4.4/4.5 Regression] ice in subst_reloads, at reload.c:6327
[not found] <bug-44031-4@http.gcc.gnu.org/bugzilla/>
2011-01-26 18:28 ` [Bug target/44031] [4.4/4.5 Regression] ice in subst_reloads, at reload.c:6327 ebotcazou at gcc dot gnu.org
2011-01-26 22:45 ` law at redhat dot com
@ 2011-01-28 15:19 ` mikpe at it dot uu.se
2011-01-28 18:59 ` mikpe at it dot uu.se
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From: mikpe at it dot uu.se @ 2011-01-28 15:19 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44031
Mikael Pettersson <mikpe at it dot uu.se> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mikpe at it dot uu.se
--- Comment #9 from Mikael Pettersson <mikpe at it dot uu.se> 2011-01-28 15:02:42 UTC ---
This test case stopped failing on 4.6 with r162726:
Author: bernds
Date: Fri Jul 30 23:50:00 2010
New Revision: 162726
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=162726
Log:
* rtlanal.c (simplify_subreg_regno): Don't treat
HARD_FRAME_POINTER_REGNUM specially.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/rtlanal.c
See also http://gcc.gnu.org/ml/gcc-patches/2010-07/msg00756.html
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2011-01-28 15:19 ` mikpe at it dot uu.se
@ 2011-01-28 18:59 ` mikpe at it dot uu.se
2011-01-28 19:37 ` law at redhat dot com
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From: mikpe at it dot uu.se @ 2011-01-28 18:59 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44031
--- Comment #10 from Mikael Pettersson <mikpe at it dot uu.se> 2011-01-28 18:28:11 UTC ---
Backporting r162726 to 4.5.2 and 4.4.5 prevents the ICE there too.
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2011-01-28 18:59 ` mikpe at it dot uu.se
@ 2011-01-28 19:37 ` law at redhat dot com
2011-01-28 19:39 ` law at redhat dot com
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From: law at redhat dot com @ 2011-01-28 19:37 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44031
Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
--- Comment #11 from Jeffrey A. Law <law at redhat dot com> 2011-01-28 18:42:34 UTC ---
The patch Mikael references removes some bogus code which prevents
simplification of a subreg of the frame pointer which was causing some problems
for the ARM. This case (x86) shows the same failing behaviour, we have a
subreg of the frame pointer which triggers a reload we're ultimately unable to
handle.
I'm going to go ahead and mark this as resolved since I believe Bernd nailed it
which is reinforced by Mikael's comments that backporting that fix to the 4.5
and 4.4 branches fixes the problem on the branches as well.
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[not found] <bug-44031-4@http.gcc.gnu.org/bugzilla/>
` (4 preceding siblings ...)
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@ 2011-01-28 19:39 ` law at redhat dot com
2011-01-31 11:03 ` [Bug rtl-optimization/44031] " ebotcazou at gcc dot gnu.org
2011-02-02 18:24 ` dnovillo at gcc dot gnu.org
7 siblings, 0 replies; 8+ messages in thread
From: law at redhat dot com @ 2011-01-28 19:39 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44031
--- Comment #12 from Jeffrey A. Law <law at redhat dot com> 2011-01-28 18:43:27 UTC ---
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Hash: SHA1
On 01/28/11 11:28, mikpe at it dot uu.se wrote:
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44031
>
> --- Comment #10 from Mikael Pettersson <mikpe at it dot uu.se> 2011-01-28 18:28:11 UTC ---
> Backporting r162726 to 4.5.2 and 4.4.5 prevents the ICE there too.
Thanks for verifiying this. That, in my mind seals the deal.
jeff
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@ 2011-01-31 11:03 ` ebotcazou at gcc dot gnu.org
2011-02-02 18:24 ` dnovillo at gcc dot gnu.org
7 siblings, 0 replies; 8+ messages in thread
From: ebotcazou at gcc dot gnu.org @ 2011-01-31 11:03 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44031
--- Comment #13 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-01-31 10:45:23 UTC ---
Author: ebotcazou
Date: Mon Jan 31 10:45:20 2011
New Revision: 169433
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=169433
Log:
PR rtl-optimization/44031
* gcc.c-torture/compile/20110131-1.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/compile/20110131-1.c
Modified:
trunk/gcc/testsuite/ChangeLog
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` (6 preceding siblings ...)
2011-01-31 11:03 ` [Bug rtl-optimization/44031] " ebotcazou at gcc dot gnu.org
@ 2011-02-02 18:24 ` dnovillo at gcc dot gnu.org
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From: dnovillo at gcc dot gnu.org @ 2011-02-02 18:24 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44031
--- Comment #14 from Diego Novillo <dnovillo at gcc dot gnu.org> 2011-02-02 18:09:15 UTC ---
Author: dnovillo
Date: Wed Feb 2 18:09:04 2011
New Revision: 169713
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=169713
Log:
PR rtl-optimization/44031
* gcc.c-torture/compile/20110131-1.c: New test.
Added:
branches/google/integration/gcc/testsuite/gcc.c-torture/compile/20110131-1.c
Modified:
branches/google/integration/gcc/testsuite/ChangeLog
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