[Bug c/53748] New: ice in fold_convert_loc

[Bug c/53748] New: ice in fold_convert_loc

[dcb314 at hotmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53748

             Bug #: 53748
           Summary: ice in fold_convert_loc
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: dcb314@hotmail.com


Created attachment 27687
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27687
C source code

I just tried to compile the package ratpoints-2.1.3-5
on gcc-4.8 trunk dated 20120620 on an AMD x86_64 box.

The compiler said

find_points.c: In function 'find_points_work':
find_points.c:1236:6: internal compiler error: in fold_convert_loc, at
fold-const.c:1986
 long find_points_work(ratpoints_args *args,
      ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Preprocessed source code attached. Flag -O2 required.

[Bug tree-optimization/53748] [4.8 Regression] ice in fold_convert_loc

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53748

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-06-22
          Component|c                           |tree-optimization
                 CC|                            |wschmidt at gcc dot gnu.org
     Ever Confirmed|0                           |1
            Summary|ice in fold_convert_loc     |[4.8 Regression] ice in
                   |                            |fold_convert_loc
   Target Milestone|---                         |4.8.0

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-06-22 08:54:58 UTC ---
Confirmed.  Happens in tree-ssa-phiopt.c in conditional_replacement.

[Bug tree-optimization/53748] [4.8 Regression] ice in fold_convert_loc

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53748

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bonzini at gnu dot org

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> 2012-06-22 12:21:46 UTC ---
It is caused by revision 186905:

http://gcc.gnu.org/ml/gcc-cvs/2012-04/msg00858.html

[Bug tree-optimization/53748] [4.8 Regression] ice in fold_convert_loc

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53748

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |jakub at gcc dot gnu.org
         AssignedTo|unassigned at gcc dot       |jakub at gcc dot gnu.org
                   |gnu.org                     |

[Bug tree-optimization/53748] [4.8 Regression] ice in fold_convert_loc

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53748

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-06-25 09:20:06 UTC ---
Reduced testcase:
typedef long long V __attribute__ ((__vector_size__ (16)));

void
foo (int x, V *y)
{
  *y = x ? ((V) { ~0UL, ~0UL }) : ((V) { 0LL, 0LL });
}

[Bug tree-optimization/53748] [4.8 Regression] ice in fold_convert_loc

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53748

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-06-25 10:14:43 UTC ---
Created attachment 27700
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27700
gcc48-pr53748.patch

UNtested fix.

[Bug tree-optimization/53748] [4.8 Regression] ice in fold_convert_loc

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53748

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-06-26 08:02:31 UTC ---
Author: jakub
Date: Tue Jun 26 08:02:20 2012
New Revision: 188975

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=188975
Log:
    PR tree-optimization/53748
    * tree-ssa-phiopt.c (conditional_replacement): Only optimize
    if arg0/arg1 have integral or pointer types.

    * gcc.c-torture/compile/pr53748.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr53748.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-phiopt.c

[Bug tree-optimization/53748] [4.8 Regression] ice in fold_convert_loc

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53748

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-06-26 08:24:32 UTC ---
Fixed.