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* [Bug tree-optimization/27549] New: [4.1 Regression] ICE in coalesce_abnormal_edges
@ 2006-05-11 8:44 jakub at gcc dot gnu dot org
2006-05-11 8:48 ` [Bug tree-optimization/27549] " pinskia at gcc dot gnu dot org
` (11 more replies)
0 siblings, 12 replies; 13+ messages in thread
From: jakub at gcc dot gnu dot org @ 2006-05-11 8:44 UTC (permalink / raw)
To: gcc-bugs
typedef __SIZE_TYPE__ size_t;
struct E
{
virtual ~E () {}
virtual size_t e () const = 0;
virtual void f (char *x) const = 0;
};
struct F : public E
{
virtual ~F () {}
virtual size_t e () const { return 0; }
virtual void f (char *x) const { *x = '\0'; }
};
struct S
{
S () { a = new char[32]; b = 32; c = 0; a[0] = 0; }
void s (const char *x, size_t y) { v (c + y + 1); __builtin_memcpy(a + c, x,
y); c += y; a[c] = '\0'; }
void s (const E *x) { size_t l = x->e(); v (c + l + 1); x->f (a + c); c += l;
}
const char *t () { return a; }
void v (size_t n)
{
if (b >= n) return;
size_t b2 = b;
char *a2 = a;
for (;;)
{
b *= 2;
if (b >= n)
break;
}
a = new char[b];
if (b2)
{
__builtin_memcpy(a, a2, c);
a2[0] = 0;
for (size_t i = 1; i < b2; i++)
a2[i] = a2[i - 1];
delete[] a2;
}
}
~S ()
{
if (b)
{
a[0] = 0;
for (size_t i = 1; i < b; i++)
a[i] = a[i - 1];
}
delete[] a;
}
char * a;
size_t b, c;
};
const char *p;
size_t q;
const F u;
const char *
foo ()
{
S s;
s.s (p, q);
s.s (&u);
return s.t ();
}
ICEs at -O{1,2,3} in coalesce_abnormal_edges, at least on x86_64 and i386
linux.
--
Summary: [4.1 Regression] ICE in coalesce_abnormal_edges
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: jakub at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27549
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/27549] [4.1 Regression] ICE in coalesce_abnormal_edges
2006-05-11 8:44 [Bug tree-optimization/27549] New: [4.1 Regression] ICE in coalesce_abnormal_edges jakub at gcc dot gnu dot org
@ 2006-05-11 8:48 ` pinskia at gcc dot gnu dot org
2006-05-11 8:51 ` pinskia at gcc dot gnu dot org
` (10 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-05-11 8:48 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from pinskia at gcc dot gnu dot org 2006-05-11 08:48 -------
This worked in "4.1.0 20060208" and in "4.1.0 20051026".
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27549
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/27549] [4.1 Regression] ICE in coalesce_abnormal_edges
2006-05-11 8:44 [Bug tree-optimization/27549] New: [4.1 Regression] ICE in coalesce_abnormal_edges jakub at gcc dot gnu dot org
2006-05-11 8:48 ` [Bug tree-optimization/27549] " pinskia at gcc dot gnu dot org
@ 2006-05-11 8:51 ` pinskia at gcc dot gnu dot org
2006-05-11 9:06 ` jakub at gcc dot gnu dot org
` (9 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-05-11 8:51 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from pinskia at gcc dot gnu dot org 2006-05-11 08:50 -------
Does the patch for PR 27283 fix this?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27549
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/27549] [4.1 Regression] ICE in coalesce_abnormal_edges
2006-05-11 8:44 [Bug tree-optimization/27549] New: [4.1 Regression] ICE in coalesce_abnormal_edges jakub at gcc dot gnu dot org
2006-05-11 8:48 ` [Bug tree-optimization/27549] " pinskia at gcc dot gnu dot org
2006-05-11 8:51 ` pinskia at gcc dot gnu dot org
@ 2006-05-11 9:06 ` jakub at gcc dot gnu dot org
2006-05-11 9:07 ` jakub at gcc dot gnu dot org
` (8 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: jakub at gcc dot gnu dot org @ 2006-05-11 9:06 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from jakub at gcc dot gnu dot org 2006-05-11 09:06 -------
*** Bug 27550 has been marked as a duplicate of this bug. ***
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27549
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/27549] [4.1 Regression] ICE in coalesce_abnormal_edges
2006-05-11 8:44 [Bug tree-optimization/27549] New: [4.1 Regression] ICE in coalesce_abnormal_edges jakub at gcc dot gnu dot org
` (3 preceding siblings ...)
2006-05-11 9:07 ` jakub at gcc dot gnu dot org
@ 2006-05-11 9:07 ` jakub at gcc dot gnu dot org
2006-05-12 4:48 ` pinskia at gcc dot gnu dot org
` (6 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: jakub at gcc dot gnu dot org @ 2006-05-11 9:07 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from jakub at gcc dot gnu dot org 2006-05-11 09:07 -------
Yes, PR 27283 patch fixes this. So, we need it on gcc-4_1-branch too...
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27549
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/27549] [4.1 Regression] ICE in coalesce_abnormal_edges
2006-05-11 8:44 [Bug tree-optimization/27549] New: [4.1 Regression] ICE in coalesce_abnormal_edges jakub at gcc dot gnu dot org
` (2 preceding siblings ...)
2006-05-11 9:06 ` jakub at gcc dot gnu dot org
@ 2006-05-11 9:07 ` jakub at gcc dot gnu dot org
2006-05-11 9:07 ` jakub at gcc dot gnu dot org
` (7 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: jakub at gcc dot gnu dot org @ 2006-05-11 9:07 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from jakub at gcc dot gnu dot org 2006-05-11 09:06 -------
*** Bug 27551 has been marked as a duplicate of this bug. ***
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27549
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/27549] [4.1 Regression] ICE in coalesce_abnormal_edges
2006-05-11 8:44 [Bug tree-optimization/27549] New: [4.1 Regression] ICE in coalesce_abnormal_edges jakub at gcc dot gnu dot org
` (4 preceding siblings ...)
2006-05-11 9:07 ` jakub at gcc dot gnu dot org
@ 2006-05-12 4:48 ` pinskia at gcc dot gnu dot org
2006-05-14 22:37 ` mmitchel at gcc dot gnu dot org
` (5 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-05-12 4:48 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from pinskia at gcc dot gnu dot org 2006-05-12 04:48 -------
Confirmed.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
BugsThisDependsOn| |27283
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Keywords| |ice-on-valid-code
Last reconfirmed|0000-00-00 00:00:00 |2006-05-12 04:48:25
date| |
Target Milestone|--- |4.1.1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27549
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/27549] [4.1 Regression] ICE in coalesce_abnormal_edges
2006-05-11 8:44 [Bug tree-optimization/27549] New: [4.1 Regression] ICE in coalesce_abnormal_edges jakub at gcc dot gnu dot org
` (5 preceding siblings ...)
2006-05-12 4:48 ` pinskia at gcc dot gnu dot org
@ 2006-05-14 22:37 ` mmitchel at gcc dot gnu dot org
2006-05-15 10:10 ` jakub at gcc dot gnu dot org
` (4 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2006-05-14 22:37 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=27549
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/27549] [4.1 Regression] ICE in coalesce_abnormal_edges
2006-05-11 8:44 [Bug tree-optimization/27549] New: [4.1 Regression] ICE in coalesce_abnormal_edges jakub at gcc dot gnu dot org
` (6 preceding siblings ...)
2006-05-14 22:37 ` mmitchel at gcc dot gnu dot org
@ 2006-05-15 10:10 ` jakub at gcc dot gnu dot org
2006-05-15 10:11 ` jakub at gcc dot gnu dot org
` (3 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: jakub at gcc dot gnu dot org @ 2006-05-15 10:10 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from jakub at gcc dot gnu dot org 2006-05-15 10:10 -------
Created an attachment (id=11468)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11468&action=view)
gcc41-pr27549.patch
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27549
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/27549] [4.1 Regression] ICE in coalesce_abnormal_edges
2006-05-11 8:44 [Bug tree-optimization/27549] New: [4.1 Regression] ICE in coalesce_abnormal_edges jakub at gcc dot gnu dot org
` (7 preceding siblings ...)
2006-05-15 10:10 ` jakub at gcc dot gnu dot org
@ 2006-05-15 10:11 ` jakub at gcc dot gnu dot org
2006-05-17 8:24 ` jakub at gcc dot gnu dot org
` (2 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: jakub at gcc dot gnu dot org @ 2006-05-15 10:11 UTC (permalink / raw)
To: gcc-bugs
------- Comment #8 from jakub at gcc dot gnu dot org 2006-05-15 10:11 -------
Created an attachment (id=11469)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11469&action=view)
gcc41-pr27548.patch
These two patches fix this on the branch, bootstrapped/regtested on 7 linux
arches. But, PR27548 fix hasn't been approved for the trunk yet, so I'll post
these 2 to gcc-patches only when that happens.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27549
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/27549] [4.1 Regression] ICE in coalesce_abnormal_edges
2006-05-11 8:44 [Bug tree-optimization/27549] New: [4.1 Regression] ICE in coalesce_abnormal_edges jakub at gcc dot gnu dot org
` (8 preceding siblings ...)
2006-05-15 10:11 ` jakub at gcc dot gnu dot org
@ 2006-05-17 8:24 ` jakub at gcc dot gnu dot org
2006-05-17 8:32 ` jakub at gcc dot gnu dot org
2006-05-17 8:46 ` jakub at gcc dot gnu dot org
11 siblings, 0 replies; 13+ messages in thread
From: jakub at gcc dot gnu dot org @ 2006-05-17 8:24 UTC (permalink / raw)
To: gcc-bugs
------- Comment #9 from jakub at gcc dot gnu dot org 2006-05-17 08:24 -------
Subject: Bug 27549
Author: jakub
Date: Wed May 17 08:23:55 2006
New Revision: 113843
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=113843
Log:
PR tree-optimization/27549
Backported from mainline
2006-05-01 Zdenek Dvorak <dvorakz@suse.cz>
PR tree-optimization/27283
* tree-ssa-loop-ivopts.c (struct nfe_cache_elt): Store just trees,
not whole # of iteration descriptions.
(niter_for_exit): Return just # of iterations. Fail if # of iterations
uses abnormal ssa name.
(niter_for_single_dom_exit): Ditto.
(find_induction_variables, may_eliminate_iv): Expect niter_for_exit to
return just the number of iterations.
(add_iv_outer_candidates, may_replace_final_value): Likewise.
* g++.dg/tree-ssa/pr27283.C: New test.
* g++.dg/tree-ssa/pr27549.C: New test.
Added:
branches/gcc-4_1-branch/gcc/testsuite/g++.dg/tree-ssa/pr27283.C
branches/gcc-4_1-branch/gcc/testsuite/g++.dg/tree-ssa/pr27549.C
Modified:
branches/gcc-4_1-branch/gcc/ChangeLog
branches/gcc-4_1-branch/gcc/testsuite/ChangeLog
branches/gcc-4_1-branch/gcc/tree-ssa-loop-ivopts.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27549
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/27549] [4.1 Regression] ICE in coalesce_abnormal_edges
2006-05-11 8:44 [Bug tree-optimization/27549] New: [4.1 Regression] ICE in coalesce_abnormal_edges jakub at gcc dot gnu dot org
` (9 preceding siblings ...)
2006-05-17 8:24 ` jakub at gcc dot gnu dot org
@ 2006-05-17 8:32 ` jakub at gcc dot gnu dot org
2006-05-17 8:46 ` jakub at gcc dot gnu dot org
11 siblings, 0 replies; 13+ messages in thread
From: jakub at gcc dot gnu dot org @ 2006-05-17 8:32 UTC (permalink / raw)
To: gcc-bugs
------- Comment #10 from jakub at gcc dot gnu dot org 2006-05-17 08:32 -------
Subject: Bug 27549
Author: jakub
Date: Wed May 17 08:31:51 2006
New Revision: 113845
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=113845
Log:
PR tree-optimization/27549
* g++.dg/tree-ssa/pr27549.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/tree-ssa/pr27549.C
Modified:
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27549
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug tree-optimization/27549] [4.1 Regression] ICE in coalesce_abnormal_edges
2006-05-11 8:44 [Bug tree-optimization/27549] New: [4.1 Regression] ICE in coalesce_abnormal_edges jakub at gcc dot gnu dot org
` (10 preceding siblings ...)
2006-05-17 8:32 ` jakub at gcc dot gnu dot org
@ 2006-05-17 8:46 ` jakub at gcc dot gnu dot org
11 siblings, 0 replies; 13+ messages in thread
From: jakub at gcc dot gnu dot org @ 2006-05-17 8:46 UTC (permalink / raw)
To: gcc-bugs
------- Comment #11 from jakub at gcc dot gnu dot org 2006-05-17 08:46 -------
Fixed in SVN.
--
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=27549
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2006-05-11 8:44 [Bug tree-optimization/27549] New: [4.1 Regression] ICE in coalesce_abnormal_edges jakub at gcc dot gnu dot org
2006-05-11 8:48 ` [Bug tree-optimization/27549] " pinskia at gcc dot gnu dot org
2006-05-11 8:51 ` pinskia at gcc dot gnu dot org
2006-05-11 9:06 ` jakub at gcc dot gnu dot org
2006-05-11 9:07 ` jakub at gcc dot gnu dot org
2006-05-11 9:07 ` jakub at gcc dot gnu dot org
2006-05-12 4:48 ` pinskia at gcc dot gnu dot org
2006-05-14 22:37 ` mmitchel at gcc dot gnu dot org
2006-05-15 10:10 ` jakub at gcc dot gnu dot org
2006-05-15 10:11 ` jakub at gcc dot gnu dot org
2006-05-17 8:24 ` jakub at gcc dot gnu dot org
2006-05-17 8:32 ` jakub at gcc dot gnu dot org
2006-05-17 8:46 ` jakub at gcc dot gnu dot org
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