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* [Bug tree-optimization/57185] New: ICE: Segmentation fault in add_field_for_reduction with -ftree-parallelize-loops=2 -fipa-pta
@ 2013-05-06 11:59 antoine.balestrat at gmail dot com
  2013-05-06 12:09 ` [Bug tree-optimization/57185] [4.8/4.9 Regression] " rguenth at gcc dot gnu.org
  2013-05-07  8:13 ` rguenth at gcc dot gnu.org
  0 siblings, 2 replies; 3+ messages in thread
From: antoine.balestrat at gmail dot com @ 2013-05-06 11:59 UTC (permalink / raw)
  To: gcc-bugs


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57185

             Bug #: 57185
           Summary: ICE: Segmentation fault in add_field_for_reduction
                    with -ftree-parallelize-loops=2 -fipa-pta
    Classification: Unclassified
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: antoine.balestrat@gmail.com


Using GCC 4.9.0 as of 20130506 :

$ cat kk.c

int a, b;
int *d;
void f(void)
{
    int c;
    b %= 1;

    if(1 - (b < 1))
    {
        int *q = 0;

        if(a)
        {
            c = 0;
lbl:
            for(*d; *d; ++*d)
                if(c ? : a ? : (c = 1) ? : 0)
                    *q &= 1;
            return;
        }

        q = 1;
    }
    goto lbl;
}

$ xgcc -O3 -w -ftree-parallelize-loops=2 -fipa-pta kk.c

kk.c: In function ‘f’:
kk.c:3:1: internal compiler error: Segmentation fault
void f(void)
     ^
0x90c35f crash_signal
    ../../srcdir/gcc/toplev.c:333
0x9906d0 add_field_for_reduction(reduction_info**, tree_node*)
    ../../srcdir/gcc/tree-parloops.c:967
0x992a52 traverse_noresize<tree_node*, add_field_for_reduction>
    ../../srcdir/gcc/hash-table.h:928
0x992a52 traverse<tree_node*, add_field_for_reduction>
    ../../srcdir/gcc/hash-table.h:950
0x992a52 separate_decls_in_region
    ../../srcdir/gcc/tree-parloops.c:1359
0x9948e5 gen_parallel_loop
    ../../srcdir/gcc/tree-parloops.c:1868
0x9948e5 parallelize_loops()
    ../../srcdir/gcc/tree-parloops.c:2218
0xa1c982 tree_parallelize_loops
    ../../srcdir/gcc/tree-ssa-loop.c:559
0xa1c982 tree_parallelize_loops
    ../../srcdir/gcc/tree-ssa-loop.c:554
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/57185] ICE: Segmentation fault in add_field_for_reduction with -ftree-parallelize-loops=2 -fipa-pta
Date: Mon, 06 May 2013 12:05:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
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X-Bugzilla-Severity: normal
X-Bugzilla-Who: rguenth at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idW185

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2013-05-06
         AssignedTo|unassigned at gcc dot       |rguenth at gcc dot gnu.org
                   |gnu.org                     |
     Ever Confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> 2013-05-06 12:04:52 UTC ---
Mine.


^ permalink raw reply	[flat|nested] 3+ messages in thread
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2013-05-06 11:59 [Bug tree-optimization/57185] New: ICE: Segmentation fault in add_field_for_reduction with -ftree-parallelize-loops=2 -fipa-pta antoine.balestrat at gmail dot com
2013-05-06 12:09 ` [Bug tree-optimization/57185] [4.8/4.9 Regression] " rguenth at gcc dot gnu.org
2013-05-07  8:13 ` rguenth at gcc dot gnu.org

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