Subversion Repositories openrisc_2011-10-31

/* With -ffast-math, the latice value for sum2 used to change from NaN to

   VARYING, in turn causing the lattice value of sum1 * sum2 change from

   NaN to 0 (since sum1 is believed to be 0 at that moment, and

/* { dg-do compile } */

/* { dg-options "-O2 -ffast-math" } */

int

foo (float *array, int end)

{

  int i;

  float sum1, sum2;

  sum2 = 0;

  for (i = 0; i < end; i++)

    sum2 = sum2+array[i];

  sum2 = 1./sum2;

  sum1 = 0.;

  for (i = 0; i < end; i++)

    sum1 = sum1+array[i];

  sum1 = sum1 * sum2;

  if (-10.0 / sum1 < 5.E-5)

    end = 0;

  return end;

}