C++ (Cpp) multiplier_allowed_in_address_p примеры использования

Пример #1

Файл: tree-ssa-address.c Проект: AsherBond/MondocosmOS-Dependencies

static void
most_expensive_mult_to_index (tree type, struct mem_address *parts,
			      aff_tree *addr, bool speed)
{
  addr_space_t as = TYPE_ADDR_SPACE (type);
  enum machine_mode address_mode = targetm.addr_space.address_mode (as);
  HOST_WIDE_INT coef;
  double_int best_mult, amult, amult_neg;
  unsigned best_mult_cost = 0, acost;
  tree mult_elt = NULL_TREE, elt;
  unsigned i, j;
  enum tree_code op_code;

  best_mult = double_int_zero;
  for (i = 0; i < addr->n; i++)
    {
      if (!double_int_fits_in_shwi_p (addr->elts[i].coef))
	continue;

      coef = double_int_to_shwi (addr->elts[i].coef);
      if (coef == 1
	  || !multiplier_allowed_in_address_p (coef, TYPE_MODE (type), as))
	continue;

      acost = multiply_by_cost (coef, address_mode, speed);

      if (acost > best_mult_cost)
	{
	  best_mult_cost = acost;
	  best_mult = addr->elts[i].coef;
	}
    }

  if (!best_mult_cost)
    return;

  /* Collect elements multiplied by best_mult.  */
  for (i = j = 0; i < addr->n; i++)
    {
      amult = addr->elts[i].coef;
      amult_neg = double_int_ext_for_comb (double_int_neg (amult), addr);

      if (double_int_equal_p (amult, best_mult))
	op_code = PLUS_EXPR;
      else if (double_int_equal_p (amult_neg, best_mult))
	op_code = MINUS_EXPR;
      else
	{
	  addr->elts[j] = addr->elts[i];
	  j++;
	  continue;
	}

      elt = fold_convert (sizetype, addr->elts[i].val);
      if (mult_elt)
	mult_elt = fold_build2 (op_code, sizetype, mult_elt, elt);
      else if (op_code == PLUS_EXPR)
	mult_elt = elt;
      else
	mult_elt = fold_build1 (NEGATE_EXPR, sizetype, elt);
    }
  addr->n = j;

  parts->index = mult_elt;
  parts->step = double_int_to_tree (sizetype, best_mult);
}

Пример #2

Файл: tree-ssa-address.c Проект: daniel-k/gcc

static void
most_expensive_mult_to_index (tree type, struct mem_address *parts,
			      aff_tree *addr, bool speed)
{
  addr_space_t as = TYPE_ADDR_SPACE (type);
  machine_mode address_mode = targetm.addr_space.address_mode (as);
  HOST_WIDE_INT coef;
  unsigned best_mult_cost = 0, acost;
  tree mult_elt = NULL_TREE, elt;
  unsigned i, j;
  enum tree_code op_code;

  offset_int best_mult = 0;
  for (i = 0; i < addr->n; i++)
    {
      if (!wi::fits_shwi_p (addr->elts[i].coef))
	continue;

      coef = addr->elts[i].coef.to_shwi ();
      if (coef == 1
	  || !multiplier_allowed_in_address_p (coef, TYPE_MODE (type), as))
	continue;

      acost = mult_by_coeff_cost (coef, address_mode, speed);

      if (acost > best_mult_cost)
	{
	  best_mult_cost = acost;
	  best_mult = offset_int::from (addr->elts[i].coef, SIGNED);
	}
    }

  if (!best_mult_cost)
    return;

  /* Collect elements multiplied by best_mult.  */
  for (i = j = 0; i < addr->n; i++)
    {
      offset_int amult = offset_int::from (addr->elts[i].coef, SIGNED);
      offset_int amult_neg = -wi::sext (amult, TYPE_PRECISION (addr->type));

      if (amult == best_mult)
	op_code = PLUS_EXPR;
      else if (amult_neg == best_mult)
	op_code = MINUS_EXPR;
      else
	{
	  addr->elts[j] = addr->elts[i];
	  j++;
	  continue;
	}

      elt = fold_convert (sizetype, addr->elts[i].val);
      if (mult_elt)
	mult_elt = fold_build2 (op_code, sizetype, mult_elt, elt);
      else if (op_code == PLUS_EXPR)
	mult_elt = elt;
      else
	mult_elt = fold_build1 (NEGATE_EXPR, sizetype, elt);
    }
  addr->n = j;

  parts->index = mult_elt;
  parts->step = wide_int_to_tree (sizetype, best_mult);
}