[Bug tree-optimization/23817] New: ICE in check_loop_closed_ssa_use, at tree-ssa-loop-manip.c:398

["belyshev at depni dot sinp dot msu dot ru" <gcc-bugzilla at gcc dot gnu dot org>]

// test case, compile with -O3

int foo1 (void);
void foo2 (int);

static int foo9 (int k)
{
  return ((k == 0x00) || (k == 0x10) || (k == 0x14));
}

static int foo8 (int *p)
{
  return *p;
}

void foo6 (int *p)
{
  int a, b, c, d, e = 0;
  foo8 (p);
  b = 0;
  do
    {
      b++;
      a = foo1();
    }
  while (b < 3 && (!foo9 (a)));
 repeat:
  d = 3;
  do
    {
      c = foo1 ();
      if (c)
        foo1 ();
      d--;
    }
  while (c && d);
  if (c && !e)
    {
      foo2 (c);
      return;
    }
  if (!e)
    {
      e = 1;
      goto repeat;
    }
}

// compiler output:
sd.i: In function 'foo6':
sd.i:15: internal compiler error: in check_loop_closed_ssa_use, at
tree-ssa-loop-manip.c:398

-- 
           Summary: ICE in check_loop_closed_ssa_use, at tree-ssa-loop-
                    manip.c:398
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: belyshev at depni dot sinp dot msu dot ru
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23817