llvm-gcc-4.2/gcc/testsuite/gcc.dg/tree-ssa/pr26180.c

/* { dg-do run } */
/* { dg-options "-O2" } */
/* { dg-require-effective-target int32plus } */

void abort(void);
int bar(int x, int y)
{
    int x1, y1;
    int x2, y2;
    unsigned int x3, y3, w;
    int z = 1;

    x1 = (x < (1 << 30));
    y1 = (y < (1 << 30));
    if (x1)
    if (y1) {
        x2 = ((x > 0)? (x): -(x));
        y2 = ((y > 0)? (y): -(y));

        x3 = x2;
        y3 = y2;
        w = x3 * y3;

        if (w >= (1 << 30)) {
          z = 1;
        } else    {
          z = -1;
        }
    }

        return z;
}


int main()
{
  int x, y, z;
  x = 536870912;  /* 2^29 */
  y = 2;
  z = bar(x, y);
  if (z != 1)
    abort ();
  return 0;
}