* [Bug c/37526] ICE using --combine -O2
2008-09-15 19:00 [Bug c/37526] New: ICE using --combine -O2 patrik dot hagglund at bredband dot net
@ 2008-09-15 19:02 ` patrik dot hagglund at bredband dot net
2008-09-15 19:03 ` patrik dot hagglund at bredband dot net
` (9 subsequent siblings)
10 siblings, 0 replies; 13+ messages in thread
From: patrik dot hagglund at bredband dot net @ 2008-09-15 19:02 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from patrik dot hagglund at bredband dot net 2008-09-15 19:01 -------
Created an attachment (id=16324)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16324&action=view)
leg.leg-saved.i
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37526
^ permalink raw reply [flat|nested] 13+ messages in thread* [Bug c/37526] ICE using --combine -O2
2008-09-15 19:00 [Bug c/37526] New: ICE using --combine -O2 patrik dot hagglund at bredband dot net
2008-09-15 19:02 ` [Bug c/37526] " patrik dot hagglund at bredband dot net
@ 2008-09-15 19:03 ` patrik dot hagglund at bredband dot net
2008-09-15 19:04 ` patrik dot hagglund at bredband dot net
` (8 subsequent siblings)
10 siblings, 0 replies; 13+ messages in thread
From: patrik dot hagglund at bredband dot net @ 2008-09-15 19:03 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from patrik dot hagglund at bredband dot net 2008-09-15 19:02 -------
Created an attachment (id=16325)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16325&action=view)
tree-saved.i
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37526
^ permalink raw reply [flat|nested] 13+ messages in thread* [Bug c/37526] ICE using --combine -O2
2008-09-15 19:00 [Bug c/37526] New: ICE using --combine -O2 patrik dot hagglund at bredband dot net
2008-09-15 19:02 ` [Bug c/37526] " patrik dot hagglund at bredband dot net
2008-09-15 19:03 ` patrik dot hagglund at bredband dot net
@ 2008-09-15 19:04 ` patrik dot hagglund at bredband dot net
2008-09-15 19:05 ` [Bug middle-end/37526] " patrik dot hagglund at bredband dot net
` (7 subsequent siblings)
10 siblings, 0 replies; 13+ messages in thread
From: patrik dot hagglund at bredband dot net @ 2008-09-15 19:04 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from patrik dot hagglund at bredband dot net 2008-09-15 19:03 -------
Created an attachment (id=16326)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16326&action=view)
compile-saved.i
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37526
^ permalink raw reply [flat|nested] 13+ messages in thread* [Bug middle-end/37526] ICE using --combine -O2
2008-09-15 19:00 [Bug c/37526] New: ICE using --combine -O2 patrik dot hagglund at bredband dot net
` (2 preceding siblings ...)
2008-09-15 19:04 ` patrik dot hagglund at bredband dot net
@ 2008-09-15 19:05 ` patrik dot hagglund at bredband dot net
2008-09-15 19:12 ` [Bug tree-optimization/37526] " pinskia at gcc dot gnu dot org
` (6 subsequent siblings)
10 siblings, 0 replies; 13+ messages in thread
From: patrik dot hagglund at bredband dot net @ 2008-09-15 19:05 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from patrik dot hagglund at bredband dot net 2008-09-15 19:04 -------
Created an attachment (id=16327)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16327&action=view)
leg.leg-saved.i
--
patrik dot hagglund at bredband dot net changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #16324|0 |1
is obsolete| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37526
^ permalink raw reply [flat|nested] 13+ messages in thread* [Bug tree-optimization/37526] ICE using --combine -O2
2008-09-15 19:00 [Bug c/37526] New: ICE using --combine -O2 patrik dot hagglund at bredband dot net
` (3 preceding siblings ...)
2008-09-15 19:05 ` [Bug middle-end/37526] " patrik dot hagglund at bredband dot net
@ 2008-09-15 19:12 ` pinskia at gcc dot gnu dot org
2008-09-15 19:39 ` [Bug tree-optimization/37526] [4.4 Regression] " pinskia at gcc dot gnu dot org
` (5 subsequent siblings)
10 siblings, 0 replies; 13+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2008-09-15 19:12 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from pinskia at gcc dot gnu dot org 2008-09-15 19:11 -------
reducing ...
It is an ICE in PRE.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|middle-end |tree-optimization
Keywords| |ice-on-valid-code
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37526
^ permalink raw reply [flat|nested] 13+ messages in thread* [Bug tree-optimization/37526] [4.4 Regression] ICE using --combine -O2
2008-09-15 19:00 [Bug c/37526] New: ICE using --combine -O2 patrik dot hagglund at bredband dot net
` (4 preceding siblings ...)
2008-09-15 19:12 ` [Bug tree-optimization/37526] " pinskia at gcc dot gnu dot org
@ 2008-09-15 19:39 ` pinskia at gcc dot gnu dot org
2008-09-16 13:21 ` rguenth at gcc dot gnu dot org
` (4 subsequent siblings)
10 siblings, 0 replies; 13+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2008-09-15 19:39 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from pinskia at gcc dot gnu dot org 2008-09-15 19:38 -------
Here is a short reduced testcase.
t1.i:
extern struct _IO_FILE *stderr;
typedef struct Node Node;
struct Node {
int type;
};
void Node_print(Node *node)
{
while (node->type == 0)
f(stderr);
f(stderr);
}
--- CUT ---
t2.i:
struct _IO_FILE { };
extern struct _IO_FILE *stderr;
--- CUT ---
Compile it as gcc t1.i t2.i -O2 -combine and you will get an ICE in FRE.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pinskia at gcc dot gnu dot
| |org
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2008-09-15 19:38:14
date| |
Summary|ICE using --combine -O2 |[4.4 Regression] ICE using -
| |-combine -O2
Target Milestone|--- |4.4.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37526
^ permalink raw reply [flat|nested] 13+ messages in thread* [Bug tree-optimization/37526] [4.4 Regression] ICE using --combine -O2
2008-09-15 19:00 [Bug c/37526] New: ICE using --combine -O2 patrik dot hagglund at bredband dot net
` (5 preceding siblings ...)
2008-09-15 19:39 ` [Bug tree-optimization/37526] [4.4 Regression] " pinskia at gcc dot gnu dot org
@ 2008-09-16 13:21 ` rguenth at gcc dot gnu dot org
2008-09-16 13:29 ` Andrew Thomas Pinski
2008-09-16 13:31 ` pinskia at gmail dot com
` (3 subsequent siblings)
10 siblings, 1 reply; 13+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2008-09-16 13:21 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from rguenth at gcc dot gnu dot org 2008-09-16 13:20 -------
./cc1 -quiet -O2 t1.i t2.i
t2.i: In function 'Node_print':
t2.i:2: error: non-trivial conversion at assignment
struct _IO_FILE *
struct _IO_FILE *
# LOADS: { stderr }
stderr.0_3 = stderr;
t2.i:2: error: non-trivial conversion at assignment
struct _IO_FILE *
struct _IO_FILE *
# LOADS: { stderr }
stderr.0_4 = stderr;
t2.i:2: internal compiler error: verify_stmts failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
So we have wrong GIMPLE here. GIGO.
Value numbering stderr.0_3 stmt = stderr.0_3 = stderr;
Setting value number of stderr.0_3 to stderr.0_3
...
Value numbering stderr.0_4 stmt = stderr.0_4 = stderr;
Inserting name stderr.0_17 for expression (struct _IO_FILE *) stderr.0_3
Setting value number of stderr.0_4 to stderr.0_17
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu dot
| |org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37526
^ permalink raw reply [flat|nested] 13+ messages in thread* Re: [Bug tree-optimization/37526] [4.4 Regression] ICE using --combine -O2
2008-09-16 13:21 ` rguenth at gcc dot gnu dot org
@ 2008-09-16 13:29 ` Andrew Thomas Pinski
0 siblings, 0 replies; 13+ messages in thread
From: Andrew Thomas Pinski @ 2008-09-16 13:29 UTC (permalink / raw)
To: gcc-bugzilla; +Cc: gcc-bugs
Sent from my iPhone
On Sep 16, 2008, at 6:20 AM, "rguenth at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org
> wrote:
>
>
> ------- Comment #7 from rguenth at gcc dot gnu dot org 2008-09-16
> 13:20 -------
> ./cc1 -quiet -O2 t1.i t2.i
> t2.i: In function 'Node_print':
> t2.i:2: error: non-trivial conversion at assignment
> struct _IO_FILE *
> struct _IO_FILE *
> # LOADS: { stderr }
> stderr.0_3 = stderr;
>
> t2.i:2: error: non-trivial conversion at assignment
> struct _IO_FILE *
> struct _IO_FILE *
> # LOADS: { stderr }
> stderr.0_4 = stderr;
>
No those two types should compatible. If they are not then there is a
bug in the middle-end. I think this is why there was the Lang hook in
the first place.
> t2.i:2: internal compiler error: verify_stmts failed
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <http://gcc.gnu.org/bugs.html> for instructions.
>
>
> So we have wrong GIMPLE here. GIGO.
>
> Value numbering stderr.0_3 stmt = stderr.0_3 = stderr;
> Setting value number of stderr.0_3 to stderr.0_3
> ...
> Value numbering stderr.0_4 stmt = stderr.0_4 = stderr;
> Inserting name stderr.0_17 for expression (struct _IO_FILE *) stderr.
> 0_3
> Setting value number of stderr.0_4 to stderr.0_17
>
>
> --
>
> rguenth at gcc dot gnu dot org changed:
>
> What |Removed |Added
> ---
> ---
> ----------------------------------------------------------------------
> CC| |rguenth at gcc dot
> gnu dot
> | |org
>
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37526
>
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/37526] [4.4 Regression] ICE using --combine -O2
2008-09-15 19:00 [Bug c/37526] New: ICE using --combine -O2 patrik dot hagglund at bredband dot net
` (6 preceding siblings ...)
2008-09-16 13:21 ` rguenth at gcc dot gnu dot org
@ 2008-09-16 13:31 ` pinskia at gmail dot com
2008-10-22 3:20 ` mmitchel at gcc dot gnu dot org
` (2 subsequent siblings)
10 siblings, 0 replies; 13+ messages in thread
From: pinskia at gmail dot com @ 2008-09-16 13:31 UTC (permalink / raw)
To: gcc-bugs
------- Comment #8 from pinskia at gmail dot com 2008-09-16 13:29 -------
Subject: Re: [4.4 Regression] ICE using --combine -O2
Sent from my iPhone
On Sep 16, 2008, at 6:20 AM, "rguenth at gcc dot gnu dot org"
<gcc-bugzilla@gcc.gnu.org
> wrote:
>
>
> ------- Comment #7 from rguenth at gcc dot gnu dot org 2008-09-16
> 13:20 -------
> ./cc1 -quiet -O2 t1.i t2.i
> t2.i: In function 'Node_print':
> t2.i:2: error: non-trivial conversion at assignment
> struct _IO_FILE *
> struct _IO_FILE *
> # LOADS: { stderr }
> stderr.0_3 = stderr;
>
> t2.i:2: error: non-trivial conversion at assignment
> struct _IO_FILE *
> struct _IO_FILE *
> # LOADS: { stderr }
> stderr.0_4 = stderr;
>
No those two types should compatible. If they are not then there is a
bug in the middle-end. I think this is why there was the Lang hook in
the first place.
> t2.i:2: internal compiler error: verify_stmts failed
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <http://gcc.gnu.org/bugs.html> for instructions.
>
>
> So we have wrong GIMPLE here. GIGO.
>
> Value numbering stderr.0_3 stmt = stderr.0_3 = stderr;
> Setting value number of stderr.0_3 to stderr.0_3
> ...
> Value numbering stderr.0_4 stmt = stderr.0_4 = stderr;
> Inserting name stderr.0_17 for expression (struct _IO_FILE *) stderr.
> 0_3
> Setting value number of stderr.0_4 to stderr.0_17
>
>
> --
>
> rguenth at gcc dot gnu dot org changed:
>
> What |Removed |Added
> ---
> ---
> ----------------------------------------------------------------------
> CC| |rguenth at gcc dot
> gnu dot
> | |org
>
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37526
>
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37526
^ permalink raw reply [flat|nested] 13+ messages in thread* [Bug tree-optimization/37526] [4.4 Regression] ICE using --combine -O2
2008-09-15 19:00 [Bug c/37526] New: ICE using --combine -O2 patrik dot hagglund at bredband dot net
` (7 preceding siblings ...)
2008-09-16 13:31 ` pinskia at gmail dot com
@ 2008-10-22 3:20 ` mmitchel at gcc dot gnu dot org
2008-10-27 10:48 ` jakub at gcc dot gnu dot org
2008-10-27 11:23 ` jakub at gcc dot gnu dot org
10 siblings, 0 replies; 13+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2008-10-22 3:20 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=37526
^ permalink raw reply [flat|nested] 13+ messages in thread* [Bug tree-optimization/37526] [4.4 Regression] ICE using --combine -O2
2008-09-15 19:00 [Bug c/37526] New: ICE using --combine -O2 patrik dot hagglund at bredband dot net
` (8 preceding siblings ...)
2008-10-22 3:20 ` mmitchel at gcc dot gnu dot org
@ 2008-10-27 10:48 ` jakub at gcc dot gnu dot org
2008-10-27 11:23 ` jakub at gcc dot gnu dot org
10 siblings, 0 replies; 13+ messages in thread
From: jakub at gcc dot gnu dot org @ 2008-10-27 10:48 UTC (permalink / raw)
To: gcc-bugs
------- Comment #9 from jakub at gcc dot gnu dot org 2008-10-27 10:46 -------
This got fixed by (or at least no longer reproduces after)
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=140562
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37526
^ permalink raw reply [flat|nested] 13+ messages in thread* [Bug tree-optimization/37526] [4.4 Regression] ICE using --combine -O2
2008-09-15 19:00 [Bug c/37526] New: ICE using --combine -O2 patrik dot hagglund at bredband dot net
` (9 preceding siblings ...)
2008-10-27 10:48 ` jakub at gcc dot gnu dot org
@ 2008-10-27 11:23 ` jakub at gcc dot gnu dot org
10 siblings, 0 replies; 13+ messages in thread
From: jakub at gcc dot gnu dot org @ 2008-10-27 11:23 UTC (permalink / raw)
To: gcc-bugs
------- Comment #10 from jakub at gcc dot gnu dot org 2008-10-27 11:22 -------
Fixed.
--
jakub at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37526
^ permalink raw reply [flat|nested] 13+ messages in thread