* [Bug c/27735] ice with -O3 on legal code
2006-05-22 22:10 [Bug c/27735] New: ice with -O3 on legal code dcb314 at hotmail dot com
@ 2006-05-22 22:12 ` dcb314 at hotmail dot com
2006-05-22 22:15 ` dcb314 at hotmail dot com
` (11 subsequent siblings)
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From: dcb314 at hotmail dot com @ 2006-05-22 22:12 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from dcb314 at hotmail dot com 2006-05-22 22:11 -------
Created an attachment (id=11496)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11496&action=view)
C source code
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27735
^ permalink raw reply [flat|nested] 14+ messages in thread* [Bug c/27735] ice with -O3 on legal code
2006-05-22 22:10 [Bug c/27735] New: ice with -O3 on legal code dcb314 at hotmail dot com
2006-05-22 22:12 ` [Bug c/27735] " dcb314 at hotmail dot com
@ 2006-05-22 22:15 ` dcb314 at hotmail dot com
2006-05-23 4:13 ` [Bug rtl-optimization/27735] ice with -O3 on legal code [unswitch] pinskia at gcc dot gnu dot org
` (10 subsequent siblings)
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From: dcb314 at hotmail dot com @ 2006-05-22 22:15 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from dcb314 at hotmail dot com 2006-05-22 22:15 -------
(In reply to comment #0)
I just tried to compile Suse Linux package qemacs-0.3.1-214 with the
GNU C compiler version 4.2 snapshot 20060520.
The compiler snapshot said
xml.c: In function 'xml_colorize_line':
xml.c:159: error: edge from 99 to 101 should not be marked irreducible
xml.c:159: error: basic block 101 should not be marked irreducible
xml.c:159: error: edge from 101 to 84 should not be marked irreducible
xml.c:159: internal compiler error: in verify_loop_structure, at cfgloop.c:1268
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
Preprocessed source code attached. Flag -O3 required.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27735
^ permalink raw reply [flat|nested] 14+ messages in thread* [Bug rtl-optimization/27735] ice with -O3 on legal code [unswitch]
2006-05-22 22:10 [Bug c/27735] New: ice with -O3 on legal code dcb314 at hotmail dot com
2006-05-22 22:12 ` [Bug c/27735] " dcb314 at hotmail dot com
2006-05-22 22:15 ` dcb314 at hotmail dot com
@ 2006-05-23 4:13 ` pinskia at gcc dot gnu dot org
2006-05-23 4:14 ` [Bug rtl-optimization/27735] [4.2 Regression] " pinskia at gcc dot gnu dot org
` (9 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-05-23 4:13 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from pinskia at gcc dot gnu dot org 2006-05-23 04:12 -------
Reduced testcase:
void set_color(void);
void xml_colorize_line(unsigned int *p, int state)
{
int c;
switch(state)
{
case 1:
goto parse_tag;
case 2:
goto parse_comment;
}
for(;;)
{
c = *p;
if (c == '<' && state == 0)
{
parse_comment: ;
while (*p != '\n')
state = 3;
parse_tag: ;
while (*p != '\n')
state = 0;
set_color();
}
else
p++;
}
}
--
pinskia 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 |2006-05-23 04:12:58
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27735
^ permalink raw reply [flat|nested] 14+ messages in thread* [Bug rtl-optimization/27735] [4.2 Regression] ice with -O3 on legal code [unswitch]
2006-05-22 22:10 [Bug c/27735] New: ice with -O3 on legal code dcb314 at hotmail dot com
` (2 preceding siblings ...)
2006-05-23 4:13 ` [Bug rtl-optimization/27735] ice with -O3 on legal code [unswitch] pinskia at gcc dot gnu dot org
@ 2006-05-23 4:14 ` pinskia at gcc dot gnu dot org
2006-05-23 10:16 ` rakdver at gcc dot gnu dot org
` (8 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-05-23 4:14 UTC (permalink / raw)
To: gcc-bugs
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
GCC host triplet|i686-suse-linux |
GCC target triplet| |i686-*-*, x86_64-*-*
Known to fail| |4.2.0
Known to work| |4.1.0
Summary|ice with -O3 on legal code |[4.2 Regression] ice with -
|[unswitch] |O3 on legal code [unswitch]
Target Milestone|--- |4.2.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27735
^ permalink raw reply [flat|nested] 14+ messages in thread* [Bug rtl-optimization/27735] [4.2 Regression] ice with -O3 on legal code [unswitch]
2006-05-22 22:10 [Bug c/27735] New: ice with -O3 on legal code dcb314 at hotmail dot com
` (3 preceding siblings ...)
2006-05-23 4:14 ` [Bug rtl-optimization/27735] [4.2 Regression] " pinskia at gcc dot gnu dot org
@ 2006-05-23 10:16 ` rakdver at gcc dot gnu dot org
2006-05-24 9:55 ` rakdver at gcc dot gnu dot org
` (7 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: rakdver at gcc dot gnu dot org @ 2006-05-23 10:16 UTC (permalink / raw)
To: gcc-bugs
--
rakdver at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |rakdver at gcc dot gnu dot
|dot org |org
Status|NEW |ASSIGNED
Last reconfirmed|2006-05-23 04:12:58 |2006-05-23 10:15:36
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27735
^ permalink raw reply [flat|nested] 14+ messages in thread* [Bug rtl-optimization/27735] [4.2 Regression] ice with -O3 on legal code [unswitch]
2006-05-22 22:10 [Bug c/27735] New: ice with -O3 on legal code dcb314 at hotmail dot com
` (4 preceding siblings ...)
2006-05-23 10:16 ` rakdver at gcc dot gnu dot org
@ 2006-05-24 9:55 ` rakdver at gcc dot gnu dot org
2006-05-24 10:10 ` patchapp at dberlin dot org
` (6 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: rakdver at gcc dot gnu dot org @ 2006-05-24 9:55 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from rakdver at gcc dot gnu dot org 2006-05-24 09:54 -------
Patch: http://gcc.gnu.org/ml/gcc-patches/2006-05/msg01229.html
--
rakdver at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
URL| |http://gcc.gnu.org/ml/gcc-
| |patches/2006-
| |05/msg01229.html
Keywords| |patch
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27735
^ permalink raw reply [flat|nested] 14+ messages in thread* [Bug rtl-optimization/27735] [4.2 Regression] ice with -O3 on legal code [unswitch]
2006-05-22 22:10 [Bug c/27735] New: ice with -O3 on legal code dcb314 at hotmail dot com
` (5 preceding siblings ...)
2006-05-24 9:55 ` rakdver at gcc dot gnu dot org
@ 2006-05-24 10:10 ` patchapp at dberlin dot org
2006-06-04 19:22 ` mmitchel at gcc dot gnu dot org
` (5 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: patchapp at dberlin dot org @ 2006-05-24 10:10 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from patchapp at dberlin dot org 2006-05-24 10:10 -------
Subject: Bug number PR 27735
A patch for this bug has been added to the patch tracker.
The mailing list url for the patch is
http://gcc.gnu.org/ml/gcc-patches/2006-05/msg01229.html
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27735
^ permalink raw reply [flat|nested] 14+ messages in thread* [Bug rtl-optimization/27735] [4.2 Regression] ice with -O3 on legal code [unswitch]
2006-05-22 22:10 [Bug c/27735] New: ice with -O3 on legal code dcb314 at hotmail dot com
` (6 preceding siblings ...)
2006-05-24 10:10 ` patchapp at dberlin dot org
@ 2006-06-04 19:22 ` mmitchel at gcc dot gnu dot org
2006-08-25 6:48 ` [Bug rtl-optimization/27735] [4.2 Regression] ICE at -O3 caused by loop unswitching pinskia at gcc dot gnu dot org
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From: mmitchel at gcc dot gnu dot org @ 2006-06-04 19:22 UTC (permalink / raw)
To: gcc-bugs
--
mmitchel at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27735
^ permalink raw reply [flat|nested] 14+ messages in thread* [Bug rtl-optimization/27735] [4.2 Regression] ICE at -O3 caused by loop unswitching
2006-05-22 22:10 [Bug c/27735] New: ice with -O3 on legal code dcb314 at hotmail dot com
` (7 preceding siblings ...)
2006-06-04 19:22 ` mmitchel at gcc dot gnu dot org
@ 2006-08-25 6:48 ` pinskia at gcc dot gnu dot org
2006-08-25 7:00 ` pinskia at gcc dot gnu dot org
` (3 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-08-25 6:48 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from pinskia at gcc dot gnu dot org 2006-08-25 06:48 -------
*** Bug 28843 has been marked as a duplicate of this bug. ***
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |twhall at twhall dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27735
^ permalink raw reply [flat|nested] 14+ messages in thread* [Bug rtl-optimization/27735] [4.2 Regression] ICE at -O3 caused by loop unswitching
2006-05-22 22:10 [Bug c/27735] New: ice with -O3 on legal code dcb314 at hotmail dot com
` (8 preceding siblings ...)
2006-08-25 6:48 ` [Bug rtl-optimization/27735] [4.2 Regression] ICE at -O3 caused by loop unswitching pinskia at gcc dot gnu dot org
@ 2006-08-25 7:00 ` pinskia at gcc dot gnu dot org
2006-08-30 8:14 ` rakdver at gcc dot gnu dot org
` (2 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-08-25 7:00 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from pinskia at gcc dot gnu dot org 2006-08-25 06:59 -------
Here is another testcase, this time Fortran:
SUBROUTINE PG3CL9 (NUMSEG)
PARAMETER (NPMAX = 5000,
+ NDMAX = 5000)
LOGICAL*4 INT
+ Z(NPMAX)
+ , INT(NPMAX)
COMMON /TWOND/ NODE(6,NDMAX)
LOGICAL ADDSW
GO TO 9
8 IF (INT(NODE(1,N))) GO TO 9
IF (ADDSW.AND.LTYPE.EQ.2) GO TO 15
GO TO 11
9 CONTINUE
ADDSW = .FALSE.
IF (NODE(2,N).EQ.3) THEN
IF ((X(N1).EQ.0)) THEN
IF (Y2.LT.0) GO TO 11
ENDIF
ENDIF
15 CONTINUE
ADDSW = .TRUE.
CALL PG3CL0 (LTYPE)
11 CONTINUE
NUMSEG = NUMSEG+1
GO TO 8
END
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27735
^ permalink raw reply [flat|nested] 14+ messages in thread* [Bug rtl-optimization/27735] [4.2 Regression] ICE at -O3 caused by loop unswitching
2006-05-22 22:10 [Bug c/27735] New: ice with -O3 on legal code dcb314 at hotmail dot com
` (9 preceding siblings ...)
2006-08-25 7:00 ` pinskia at gcc dot gnu dot org
@ 2006-08-30 8:14 ` rakdver at gcc dot gnu dot org
2006-08-30 12:21 ` pinskia at gcc dot gnu dot org
2006-09-02 17:03 ` pinskia at gcc dot gnu dot org
12 siblings, 0 replies; 14+ messages in thread
From: rakdver at gcc dot gnu dot org @ 2006-08-30 8:14 UTC (permalink / raw)
To: gcc-bugs
------- Comment #8 from rakdver at gcc dot gnu dot org 2006-08-30 08:14 -------
Subject: Bug 27735
Author: rakdver
Date: Wed Aug 30 08:14:29 2006
New Revision: 116582
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=116582
Log:
PR rtl-optimization/27735
* cfgloopmanip.c (fix_loop_placements, fix_bb_placements, unloop):
Add new argument to keep track of whether an irreducible region
was affected. All callers changed.
(fix_irreducible_loops): Removed.
(remove_path): Call mark_irreducible_loops if EDGE_IRREDUCIBLE_LOOP
flags were invalidated.
* gcc.dg/loop-unswitch-1.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/loop-unswitch-1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/cfgloopmanip.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27735
^ permalink raw reply [flat|nested] 14+ messages in thread* [Bug rtl-optimization/27735] [4.2 Regression] ICE at -O3 caused by loop unswitching
2006-05-22 22:10 [Bug c/27735] New: ice with -O3 on legal code dcb314 at hotmail dot com
` (10 preceding siblings ...)
2006-08-30 8:14 ` rakdver at gcc dot gnu dot org
@ 2006-08-30 12:21 ` pinskia at gcc dot gnu dot org
2006-09-02 17:03 ` pinskia at gcc dot gnu dot org
12 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-08-30 12:21 UTC (permalink / raw)
To: gcc-bugs
------- Comment #9 from pinskia at gcc dot gnu dot org 2006-08-30 12:21 -------
Fixed.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27735
^ permalink raw reply [flat|nested] 14+ messages in thread* [Bug rtl-optimization/27735] [4.2 Regression] ICE at -O3 caused by loop unswitching
2006-05-22 22:10 [Bug c/27735] New: ice with -O3 on legal code dcb314 at hotmail dot com
` (11 preceding siblings ...)
2006-08-30 12:21 ` pinskia at gcc dot gnu dot org
@ 2006-09-02 17:03 ` pinskia at gcc dot gnu dot org
12 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-09-02 17:03 UTC (permalink / raw)
To: gcc-bugs
------- Comment #10 from pinskia at gcc dot gnu dot org 2006-09-02 17:03 -------
*** Bug 28934 has been marked as a duplicate of this bug. ***
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tbm at cyrius dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27735
^ permalink raw reply [flat|nested] 14+ messages in thread