[Bug tree-optimization/51245] [4.7 Regression] ICE in vn_reference_insert_pieces, at tree-ssa-sccvn.c:1983

2011-12-06 Thread rguenth at gcc dot gnu.org 
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=gccview=revrev=182044
Log:
2011-12-06  Richard Guenther  rguent...@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

[Bug tree-optimization/51245] [4.7 Regression] ICE in vn_reference_insert_pieces, at tree-ssa-sccvn.c:1983

2011-12-06 Thread rguenth at gcc dot gnu.org 
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.

[Bug tree-optimization/51245] [4.7 Regression] ICE in vn_reference_insert_pieces, at tree-ssa-sccvn.c:1983

2011-12-05 Thread rguenth at gcc dot gnu.org 
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.

[Bug tree-optimization/51245] [4.7 Regression] ICE in vn_reference_insert_pieces, at tree-ssa-sccvn.c:1983

2011-11-25 Thread jakub at gcc dot gnu.org 
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=gccview=revrev=179556 aka
PR38885.