[Bug rtl-optimization/22509] [4.1 regression] elemental.f90 testsuite failure (-fweb)

[rakdver at gcc dot gnu dot org]

------- Comment #15 from rakdver at gcc dot gnu dot org  2005-11-01 14:08 
-------
C testcase (needs to be compiled with -O1 -funroll-loops and complete unrolling
on trees must be disabled)

int e_fn (int *p, int *q)
{
  return *p - *q;
}

int main (void)
{
  int a[8];
  int b[8];
  int A[8];
  unsigned i, j;
  int C = 1, tmp;
  int *p;

  for (i = 2; i < 6; i++)
    {
      a[2 * i - 4] = 2;
      a[2 * i - 3] = 2;
    }

  for (i = 2; i < 6; i++)
    {
      b[2 * i - 4] = 0;
      b[2 * i - 3] = 0;
    }
  b[1] = e_fn (&a[0], &C);
  b[3] = e_fn (&a[2], &C);
  b[5] = e_fn (&a[4], &C);
  b[7] = e_fn (&a[6], &C);


  for (i = 1, j = 6; i < 5; i++, j -= 2)
    {
      p = A;
      tmp = b[2*i-2] + 1;
      A[2*i - 2] = e_fn(&a[j], &tmp);

      tmp = b[2*i-1] + 1;
      A[2*i - 1] = e_fn(&a[j+1], &tmp);
    }

  for (i = 1; i < 5; i++)
    {
      a[2*i-2] = p[2*i -2];
      a[2*i-1] = p[2*i -1];  for (i = 0; i < 8; i++)
    }
  printf ("  %d",a[i]);
  printf ("\n");
  return 0;
}


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22509