[Bug tree-optimization/35043] New: ICE in tree-data-ref because signed_type_for_types returns NULL

[Bug tree-optimization/35043] New: ICE in tree-data-ref because signed_type_for_types returns NULL

[rguenth at gcc dot gnu dot org]

1510      type = signed_type_for_types (TREE_TYPE (chrec_a), TREE_TYPE
(chrec_b));
1511      chrec_a = chrec_convert (type, chrec_a, NULL_TREE);

(gdb) p type
$4 = (tree) 0x0

and we then ICE in

#0  0x000000000064bc08 in fold_convert (type=0x0, arg=0x2aad7d1bb570)
    at /space/rguenther/src/svn/trunk/gcc/fold-const.c:2496

(gdb) call debug_tree (chrec_a)
 <integer_cst 0x2aad7d1bb570 type <integer_type 0x2aad7d1ae0c0 bit_size_type>
constant invariant 1>
(gdb) call debug_tree (chrec_b)
 <integer_cst 0x2aad7d1bb390 type <integer_type 0x2aad7d1ae0c0 bit_size_type>
constant invariant 0>


-- 
           Summary: ICE in tree-data-ref because signed_type_for_types
                    returns NULL
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rguenth at gcc dot gnu dot org
GCC target triplet: ia64-*-*


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35043

[Bug tree-optimization/35043] ICE in tree-data-ref because signed_type_for_types returns NULL

[rguenth at gcc dot gnu dot org]

------- Comment #1 from rguenth at gcc dot gnu dot org  2008-01-31 17:15 -------
Created an attachment (id=15065)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=15065&action=view)
testcase

-O -ftree-vectorize

a cross from x86_64 is enough to trigger the ICE.

reducing.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35043

[Bug middle-end/35043] ICE in tree-data-ref because signed_type_for_types returns NULL

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2008-01-31 17:23 -------
Reduced testcase:

typedef long unsigned int size_t;
typedef struct   {
      long double dat[2];
} gsl_complex_long_double;
typedef struct {
    size_t size;
    size_t stride;
    long double *data;
} gsl_vector_complex_long_double;
void gsl_vector_complex_long_double_set_zero (gsl_vector_complex_long_double *
v) 
{
    long double * const data = v->data;
    const size_t n = v->size;
    const size_t stride = v->stride;
    const gsl_complex_long_double zero = { { 0.0L,0.0L} } ;
    size_t i;
    for (i = 0; i < n; i++)     
        *(gsl_complex_long_double *) (data + 2 * i * stride) = zero;
}

tree.c:signed_or_unsigned_type_for doesn't handle bit_size_type specially
which has TImode and a precision of 68.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
          Component|tree-optimization           |middle-end
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2008-01-31 17:23:03
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35043

[Bug middle-end/35043] ICE in tree-data-ref because signed_type_for_types returns NULL

[rguenth at gcc dot gnu dot org]

------- Comment #3 from rguenth at gcc dot gnu dot org  2008-01-31 17:30 -------
Mine.  I have a patch, defered for 4.4.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |rguenth at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2008-01-31 17:23:03         |2008-01-31 17:30:26
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35043

[Bug middle-end/35043] ICE in tree-data-ref because signed_type_for_types returns NULL

[rguenth at gcc dot gnu dot org]

------- Comment #5 from rguenth at gcc dot gnu dot org  2008-02-04 13:30 -------
Subject: Bug 35043

Author: rguenth
Date: Mon Feb  4 13:30:00 2008
New Revision: 132091

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=132091
Log:
2008-02-04  Richard Guenther  <rguenther@suse.de>

        PR middle-end/35043
        * gimplify.c (gimplify_init_ctor_eval): Convert array indices
        to TYPE_DOMAINs base type instead of using bitsizetype here.

        * gcc.c-torture/compile/pr35043.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr35043.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimplify.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35043

[Bug middle-end/35043] ICE in tree-data-ref because signed_type_for_types returns NULL

[rguenth at gcc dot gnu dot org]

------- Comment #4 from rguenth at gcc dot gnu dot org  2008-02-04 13:30 -------
Fixed.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.3.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35043