[Bug c/49926] New: ice in process_use, at tree-vect-stmts.c:405

["regehr at cs dot utah.edu" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49926

           Summary: ice in process_use, at tree-vect-stmts.c:405
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: regehr@cs.utah.edu
                CC: chenyang@cs.utah.edu


[regehr@gamow tmp044]$ current-gcc -Ofast -c small.c -w
small.c: In function 'func_66':
small.c:4:6: internal compiler error: in process_use, at tree-vect-stmts.c:405
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
[regehr@gamow tmp044]$ cat small.c
int g_93;
int g_163;

void func_66 (int p_68, int p_69)
{
  int l_77[0];
  int *l_171 = &g_93;
  int l_201;
  int l_224;
 lbl_278:
  {
    int *l_225 = 0;
    *l_171 = (*l_225 = l_224, 0);
  }
  if (l_201 = p_68--)
    for (; g_163; g_163 += 1)
      {
    int *l_256 = &l_201;
    int *l_257 = &l_224;
    *l_257 = *l_256 &= *l_171 &= 1;
    *l_256 &= l_77[g_163];
      }
  goto lbl_278;
}
[regehr@gamow tmp044]$ current-gcc -v
Using built-in specs.
COLLECT_GCC=current-gcc
COLLECT_LTO_WRAPPER=/uusoc/exports/scratch/regehr/z/compiler-install/gcc-r176967-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-r176967-install
--program-prefix=r176967- --enable-languages=c,c++
Thread model: posix
gcc version 4.7.0 20110731 (experimental) (GCC) 
[regehr@gamow tmp044]$