Esempi in C++ (Cpp) per ggc_alloc_cleared_range_info_def

Esempio n. 1

void
set_range_info (tree name, double_int min, double_int max)
{
  gcc_assert (!POINTER_TYPE_P (TREE_TYPE (name)));
  range_info_def *ri = SSA_NAME_RANGE_INFO (name);

  /* Allocate if not available.  */
  if (ri == NULL)
    {
      ri = ggc_alloc_cleared_range_info_def ();
      SSA_NAME_RANGE_INFO (name) = ri;
    }

  /* Set the values.  */
  ri->min = min;
  ri->max = max;
}

Esempio n. 2

File: tree-ssanames.c Progetto: ds2dev/gcc

void
set_range_info (tree name, enum value_range_type range_type, double_int min,
		double_int max)
{
  gcc_assert (!POINTER_TYPE_P (TREE_TYPE (name)));
  gcc_assert (range_type == VR_RANGE || range_type == VR_ANTI_RANGE);
  range_info_def *ri = SSA_NAME_RANGE_INFO (name);

  /* Allocate if not available.  */
  if (ri == NULL)
    {
      ri = ggc_alloc_cleared_range_info_def ();
      SSA_NAME_RANGE_INFO (name) = ri;
      ri->nonzero_bits = double_int::mask (TYPE_PRECISION (TREE_TYPE (name)));
    }

  /* Record the range type.  */
  if (SSA_NAME_RANGE_TYPE (name) != range_type)
    SSA_NAME_ANTI_RANGE_P (name) = (range_type == VR_ANTI_RANGE);

  /* Set the values.  */
  ri->min = min;
  ri->max = max;

  /* If it is a range, try to improve nonzero_bits from the min/max.  */
  if (range_type == VR_RANGE)
    {
      int prec = TYPE_PRECISION (TREE_TYPE (name));
      double_int xorv;

      min = min.zext (prec);
      max = max.zext (prec);
      xorv = min ^ max;
      if (xorv.high)
	xorv = double_int::mask (2 * HOST_BITS_PER_WIDE_INT
				 - clz_hwi (xorv.high));
      else if (xorv.low)
	xorv = double_int::mask (HOST_BITS_PER_WIDE_INT
				 - clz_hwi (xorv.low));
      ri->nonzero_bits = ri->nonzero_bits & (min | xorv);
    }
}