* [Bug target/24600] [4.1 Regression] unrecognizable instruction
2005-10-31 21:39 [Bug target/24600] New: [4.1 Regression] unrecognizable instruction rguenth at gcc dot gnu dot org
@ 2005-10-31 21:40 ` rguenth at gcc dot gnu dot org
2005-11-01 13:01 ` rguenth at gcc dot gnu dot org
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From: rguenth at gcc dot gnu dot org @ 2005-10-31 21:40 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from rguenth at gcc dot gnu dot org 2005-10-31 21:40 -------
Whoops, s390, not s390x.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
GCC target triplet|s390x-*-* |s390-*-*
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24600
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2005-10-31 21:39 [Bug target/24600] New: [4.1 Regression] unrecognizable instruction rguenth at gcc dot gnu dot org
2005-10-31 21:40 ` [Bug target/24600] " rguenth at gcc dot gnu dot org
@ 2005-11-01 13:01 ` rguenth at gcc dot gnu dot org
2005-11-01 13:01 ` rguenth at gcc dot gnu dot org
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From: rguenth at gcc dot gnu dot org @ 2005-11-01 13:01 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from rguenth at gcc dot gnu dot org 2005-11-01 13:01 -------
Created an attachment (id=10098)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10098&action=view)
reduced testcase
testcase.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24600
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2005-10-31 21:39 [Bug target/24600] New: [4.1 Regression] unrecognizable instruction rguenth at gcc dot gnu dot org
2005-10-31 21:40 ` [Bug target/24600] " rguenth at gcc dot gnu dot org
2005-11-01 13:01 ` rguenth at gcc dot gnu dot org
@ 2005-11-01 13:01 ` rguenth at gcc dot gnu dot org
2005-11-01 14:28 ` pinskia at gcc dot gnu dot org
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From: rguenth at gcc dot gnu dot org @ 2005-11-01 13:01 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from rguenth at gcc dot gnu dot org 2005-11-01 13:01 -------
Critical, as this happens in a lot of packages.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |critical
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24600
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2005-10-31 21:39 [Bug target/24600] New: [4.1 Regression] unrecognizable instruction rguenth at gcc dot gnu dot org
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2005-11-01 13:01 ` rguenth at gcc dot gnu dot org
@ 2005-11-01 14:28 ` pinskia at gcc dot gnu dot org
2005-11-01 21:53 ` uweigand at gcc dot gnu dot org
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From: pinskia at gcc dot gnu dot org @ 2005-11-01 14:28 UTC (permalink / raw)
To: gcc-bugs
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pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.1.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24600
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2005-10-31 21:39 [Bug target/24600] New: [4.1 Regression] unrecognizable instruction rguenth at gcc dot gnu dot org
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2005-11-01 14:28 ` pinskia at gcc dot gnu dot org
@ 2005-11-01 21:53 ` uweigand at gcc dot gnu dot org
2005-11-01 21:54 ` uweigand at gcc dot gnu dot org
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From: uweigand at gcc dot gnu dot org @ 2005-11-01 21:53 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from uweigand at gcc dot gnu dot org 2005-11-01 21:53 -------
This is a bug in the old loop optimizer introduced by:
http://gcc.gnu.org/ml/gcc-patches/2005-03/msg00690.html
The problem with this patch is that it assumes
gen_move_insn where the source is a PLUS representing
an address always returns a valid instruction. This is
not the case at least on s390.
--
uweigand at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |uweigand at gcc dot gnu dot
| |org
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2005-11-01 21:53:05
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24600
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2005-10-31 21:39 [Bug target/24600] New: [4.1 Regression] unrecognizable instruction rguenth at gcc dot gnu dot org
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2005-11-01 21:53 ` uweigand at gcc dot gnu dot org
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2005-11-02 16:22 ` uweigand at gcc dot gnu dot org
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From: uweigand at gcc dot gnu dot org @ 2005-11-01 21:54 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from uweigand at gcc dot gnu dot org 2005-11-01 21:54 -------
Created an attachment (id=10106)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10106&action=view)
Possible fix (not yet tested)
This patch is a possible fix to the problem;
it works by using force_operand to make sure
the address can be loaded correctly.
(Patch not yet tested.)
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24600
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2005-10-31 21:39 [Bug target/24600] New: [4.1 Regression] unrecognizable instruction rguenth at gcc dot gnu dot org
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2005-11-01 21:54 ` uweigand at gcc dot gnu dot org
@ 2005-11-02 16:22 ` uweigand at gcc dot gnu dot org
2005-11-02 23:06 ` uweigand at gcc dot gnu dot org
2005-11-02 23:09 ` uweigand at gcc dot gnu dot org
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From: uweigand at gcc dot gnu dot org @ 2005-11-02 16:22 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from uweigand at gcc dot gnu dot org 2005-11-02 16:22 -------
Tested patch in:
http://gcc.gnu.org/ml/gcc-patches/2005-11/msg00113.html
--
uweigand at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |uweigand at gcc dot gnu dot
|dot org |org
URL| |http://gcc.gnu.org/ml/gcc-
| |patches/2005-
| |11/msg00113.html
Status|NEW |ASSIGNED
Keywords| |patch
Last reconfirmed|2005-11-01 21:53:05 |2005-11-02 16:22:35
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24600
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2005-10-31 21:39 [Bug target/24600] New: [4.1 Regression] unrecognizable instruction rguenth at gcc dot gnu dot org
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2005-11-02 16:22 ` uweigand at gcc dot gnu dot org
@ 2005-11-02 23:06 ` uweigand at gcc dot gnu dot org
2005-11-02 23:09 ` uweigand at gcc dot gnu dot org
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From: uweigand at gcc dot gnu dot org @ 2005-11-02 23:06 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from uweigand at gcc dot gnu dot org 2005-11-02 23:06 -------
Subject: Bug 24600
Author: uweigand
Date: Wed Nov 2 23:06:26 2005
New Revision: 106404
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=106404
Log:
ChangeLog:
PR target/24600
* loop.c (loop_givs_rescan): Use force_operand to expand
complex GIVs.
testsuite/ChangeLog:
PR target/24600
* gcc.dg/pr24600.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr24600.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/loop.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24600
^ permalink raw reply [flat|nested] 10+ messages in thread* [Bug target/24600] [4.1 Regression] unrecognizable instruction
2005-10-31 21:39 [Bug target/24600] New: [4.1 Regression] unrecognizable instruction rguenth at gcc dot gnu dot org
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2005-11-02 23:06 ` uweigand at gcc dot gnu dot org
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From: uweigand at gcc dot gnu dot org @ 2005-11-02 23:09 UTC (permalink / raw)
To: gcc-bugs
------- Comment #8 from uweigand at gcc dot gnu dot org 2005-11-02 23:09 -------
Fixed.
--
uweigand at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24600
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