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* [Bug c/51245] New: ICE in vn_reference_insert_pieces, at tree-ssa-sccvn.c:1983
@ 2011-11-20 21:13 regehr at cs dot utah.edu
2011-11-25 9:37 ` [Bug tree-optimization/51245] [4.7 Regression] " jakub at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: regehr at cs dot utah.edu @ 2011-11-20 21:13 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51245
Bug #: 51245
Summary: ICE in vn_reference_insert_pieces, at
tree-ssa-sccvn.c:1983
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: regehr@cs.utah.edu
[regehr@gamow tmp065]$ current-gcc -v
Using built-in specs.
COLLECT_GCC=current-gcc
COLLECT_LTO_WRAPPER=/uusoc/exports/scratch/regehr/z/compiler-install/gcc-r181530-install/bin/../libexec/gcc/x86_64-unknown-linux-gnu/4.7.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../configure --with-libelf=/usr/local --enable-lto
--prefix=/home/regehr/z/compiler-install/gcc-r181530-install
--program-prefix=r181530- --enable-languages=c,c++
Thread model: posix
gcc version 4.7.0 20111120 (experimental) (GCC)
[regehr@gamow tmp065]$ current-gcc -Ofast -c -w small.c
small.c: In function 'func_1':
small.c:11:1: internal compiler error: in vn_reference_insert_pieces, at
tree-ssa-sccvn.c:1983
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
[regehr@gamow tmp065]$ cat small.c
struct S0
{
int f4;
};
struct S0 g_122;
struct S0 *g_140;
struct S0 **g_348;
unsigned func_10 (int, int, char);
int func_75;
struct S0
func_1 ()
{
struct S0 l_444 = {
};
if (func_10 (0, 0, 0))
{
struct S0 *l_463 = &g_122;
for (;;)
{
*g_140 = l_444;
*l_463 = *g_140;
if (g_122.f4)
break;
}
}
return **g_348;
}
unsigned
func_10 (int p_11, int p_12, char p_13)
{
if (func_75)
**g_348 = *g_140;
return 1;
}
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/51245] [4.7 Regression] ICE in vn_reference_insert_pieces, at tree-ssa-sccvn.c:1983
2011-11-20 21:13 [Bug c/51245] New: ICE in vn_reference_insert_pieces, at tree-ssa-sccvn.c:1983 regehr at cs dot utah.edu
@ 2011-11-25 9:37 ` jakub at gcc dot gnu.org
2011-12-05 15:20 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2011-11-25 9:37 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51245
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2011-11-25
CC| |jakub at gcc dot gnu.org
Target Milestone|--- |4.7.0
Summary|ICE in |[4.7 Regression] ICE in
|vn_reference_insert_pieces, |vn_reference_insert_pieces,
|at tree-ssa-sccvn.c:1983 |at tree-ssa-sccvn.c:1983
Ever Confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-11-25 08:30:15 UTC ---
Shorter testcase for -O2/-O3:
struct S { int s; } a, *b, **c;
int d;
struct S
foo (void)
{
struct S s = { 0 }, *e = &a;
if (d)
**c = *b;
while (1)
{
*b = s;
*e = *b;
if (a.s)
break;
}
return **c;
}
Caused by http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=179556 aka
PR38885.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/51245] [4.7 Regression] ICE in vn_reference_insert_pieces, at tree-ssa-sccvn.c:1983
2011-11-20 21:13 [Bug c/51245] New: ICE in vn_reference_insert_pieces, at tree-ssa-sccvn.c:1983 regehr at cs dot utah.edu
2011-11-25 9:37 ` [Bug tree-optimization/51245] [4.7 Regression] " jakub at gcc dot gnu.org
@ 2011-12-05 15:20 ` rguenth at gcc dot gnu.org
2011-12-06 11:41 ` rguenth at gcc dot gnu.org
2011-12-06 12:06 ` rguenth at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-12-05 15:20 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51245
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot |rguenth at gcc dot gnu.org
|gnu.org |
--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-12-05 15:20:19 UTC ---
Mine.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/51245] [4.7 Regression] ICE in vn_reference_insert_pieces, at tree-ssa-sccvn.c:1983
2011-11-20 21:13 [Bug c/51245] New: ICE in vn_reference_insert_pieces, at tree-ssa-sccvn.c:1983 regehr at cs dot utah.edu
2011-11-25 9:37 ` [Bug tree-optimization/51245] [4.7 Regression] " jakub at gcc dot gnu.org
2011-12-05 15:20 ` rguenth at gcc dot gnu.org
@ 2011-12-06 11:41 ` rguenth at gcc dot gnu.org
2011-12-06 12:06 ` rguenth at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-12-06 11:41 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51245
--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-12-06 11:41:04 UTC ---
Author: rguenth
Date: Tue Dec 6 11:41:00 2011
New Revision: 182044
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=182044
Log:
2011-12-06 Richard Guenther <rguenther@suse.de>
PR tree-optimization/51245
* tree-ssa-sccvn.c (vn_reference_lookup_or_insert_constant_for_pieces):
New function.
(vn_reference_lookup_3): Use it. Properly valueize all refs
we create.
* gcc.dg/torture/pr51245.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr51245.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-sccvn.c
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug tree-optimization/51245] [4.7 Regression] ICE in vn_reference_insert_pieces, at tree-ssa-sccvn.c:1983
2011-11-20 21:13 [Bug c/51245] New: ICE in vn_reference_insert_pieces, at tree-ssa-sccvn.c:1983 regehr at cs dot utah.edu
` (2 preceding siblings ...)
2011-12-06 11:41 ` rguenth at gcc dot gnu.org
@ 2011-12-06 12:06 ` rguenth at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-12-06 12:06 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51245
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
--- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-12-06 12:06:01 UTC ---
Fixed.
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2011-12-06 12:06 UTC | newest]
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2011-11-20 21:13 [Bug c/51245] New: ICE in vn_reference_insert_pieces, at tree-ssa-sccvn.c:1983 regehr at cs dot utah.edu
2011-11-25 9:37 ` [Bug tree-optimization/51245] [4.7 Regression] " jakub at gcc dot gnu.org
2011-12-05 15:20 ` rguenth at gcc dot gnu.org
2011-12-06 11:41 ` rguenth at gcc dot gnu.org
2011-12-06 12:06 ` rguenth at gcc dot gnu.org
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