C++ CHREC_VARIABLE函數代碼示例

本文整理匯總了C++中CHREC_VARIABLE函數的典型用法代碼示例。如果您正苦於以下問題：C++ CHREC_VARIABLE函數的具體用法？C++ CHREC_VARIABLE怎麽用？C++ CHREC_VARIABLE使用的例子？那麽, 這裏精選的函數代碼示例或許可以為您提供幫助。

在下文中一共展示了CHREC_VARIABLE函數的15個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的C++代碼示例。

示例1: reset_evolution_in_loop

tree 
reset_evolution_in_loop (unsigned loop_num,
			 tree chrec, 
			 tree new_evol)
{
  struct loop *loop = get_loop (loop_num);

  if (POINTER_TYPE_P (chrec_type (chrec)))
    gcc_assert (sizetype == chrec_type (new_evol));
  else
    gcc_assert (chrec_type (chrec) == chrec_type (new_evol));

  if (TREE_CODE (chrec) == POLYNOMIAL_CHREC
      && flow_loop_nested_p (loop, get_chrec_loop (chrec)))
    {
      tree left = reset_evolution_in_loop (loop_num, CHREC_LEFT (chrec),
					   new_evol);
      tree right = reset_evolution_in_loop (loop_num, CHREC_RIGHT (chrec),
					    new_evol);
      return build3 (POLYNOMIAL_CHREC, TREE_TYPE (left),
		     build_int_cst (NULL_TREE, CHREC_VARIABLE (chrec)),
		     left, right);
    }

  while (TREE_CODE (chrec) == POLYNOMIAL_CHREC
	 && CHREC_VARIABLE (chrec) == loop_num)
    chrec = CHREC_LEFT (chrec);
  
  return build_polynomial_chrec (loop_num, chrec, new_evol);
}

開發者ID:AhmadTux，項目名稱:DragonFlyBSD，代碼行數:30，代碼來源:tree-chrec.c

示例2: chrec_fold_poly_cst

static inline tree 
chrec_fold_poly_cst (enum tree_code code, 
		     tree type, 
		     tree poly, 
		     tree cst)
{
  gcc_assert (poly);
  gcc_assert (cst);
  gcc_assert (TREE_CODE (poly) == POLYNOMIAL_CHREC);
  gcc_assert (!is_not_constant_evolution (cst));
  
  switch (code)
    {
    case PLUS_EXPR:
      return build_polynomial_chrec 
	(CHREC_VARIABLE (poly), 
	 chrec_fold_plus (type, CHREC_LEFT (poly), cst),
	 CHREC_RIGHT (poly));
      
    case MINUS_EXPR:
      return build_polynomial_chrec 
	(CHREC_VARIABLE (poly), 
	 chrec_fold_minus (type, CHREC_LEFT (poly), cst),
	 CHREC_RIGHT (poly));
      
    case MULT_EXPR:
      return build_polynomial_chrec 
	(CHREC_VARIABLE (poly), 
	 chrec_fold_multiply (type, CHREC_LEFT (poly), cst),
	 chrec_fold_multiply (type, CHREC_RIGHT (poly), cst));
      
    default:
      return chrec_dont_know;
    }
}

開發者ID:DJHartley，項目名稱:iphone-dev，代碼行數:35，代碼來源:tree-chrec.c

示例3: eq_evolutions_p

bool
eq_evolutions_p (const_tree chrec0, const_tree chrec1)
{
  if (chrec0 == NULL_TREE
      || chrec1 == NULL_TREE
      || TREE_CODE (chrec0) != TREE_CODE (chrec1))
    return false;

  if (chrec0 == chrec1)
    return true;

  switch (TREE_CODE (chrec0))
    {
    case INTEGER_CST:
      return operand_equal_p (chrec0, chrec1, 0);

    case POLYNOMIAL_CHREC:
      return (CHREC_VARIABLE (chrec0) == CHREC_VARIABLE (chrec1)
	      && eq_evolutions_p (CHREC_LEFT (chrec0), CHREC_LEFT (chrec1))
	      && eq_evolutions_p (CHREC_RIGHT (chrec0), CHREC_RIGHT (chrec1)));

    case PLUS_EXPR:
    case MULT_EXPR:
    case MINUS_EXPR:
    case POINTER_PLUS_EXPR:
      return eq_evolutions_p (TREE_OPERAND (chrec0, 0),
			      TREE_OPERAND (chrec1, 0))
	  && eq_evolutions_p (TREE_OPERAND (chrec0, 1),
			      TREE_OPERAND (chrec1, 1));

    default:
      return false;
    }
}

開發者ID:hemantjain95，項目名稱:gcc，代碼行數:34，代碼來源:tree-chrec.c

示例4: chrec_fold_multiply_poly_poly

static inline tree
chrec_fold_multiply_poly_poly (tree type,
			       tree poly0,
			       tree poly1)
{
  tree t0, t1, t2;
  int var;
  struct loop *loop0 = get_chrec_loop (poly0);
  struct loop *loop1 = get_chrec_loop (poly1);

  gcc_assert (poly0);
  gcc_assert (poly1);
  gcc_assert (TREE_CODE (poly0) == POLYNOMIAL_CHREC);
  gcc_assert (TREE_CODE (poly1) == POLYNOMIAL_CHREC);
  gcc_checking_assert (useless_type_conversion_p (type, chrec_type (poly0))
		       && useless_type_conversion_p (type, chrec_type (poly1)));

  /* {a, +, b}_1 * {c, +, d}_2  ->  {c*{a, +, b}_1, +, d}_2,
     {a, +, b}_2 * {c, +, d}_1  ->  {a*{c, +, d}_1, +, b}_2,
     {a, +, b}_x * {c, +, d}_x  ->  {a*c, +, a*d + b*c + b*d, +, 2*b*d}_x.  */
  if (flow_loop_nested_p (loop0, loop1))
    /* poly0 is a constant wrt. poly1.  */
    return build_polynomial_chrec
      (CHREC_VARIABLE (poly1),
       chrec_fold_multiply (type, CHREC_LEFT (poly1), poly0),
       CHREC_RIGHT (poly1));

  if (flow_loop_nested_p (loop1, loop0))
    /* poly1 is a constant wrt. poly0.  */
    return build_polynomial_chrec
      (CHREC_VARIABLE (poly0),
       chrec_fold_multiply (type, CHREC_LEFT (poly0), poly1),
       CHREC_RIGHT (poly0));

  gcc_assert (loop0 == loop1);

  /* poly0 and poly1 are two polynomials in the same variable,
     {a, +, b}_x * {c, +, d}_x  ->  {a*c, +, a*d + b*c + b*d, +, 2*b*d}_x.  */

  /* "a*c".  */
  t0 = chrec_fold_multiply (type, CHREC_LEFT (poly0), CHREC_LEFT (poly1));

  /* "a*d + b*c".  */
  t1 = chrec_fold_multiply (type, CHREC_LEFT (poly0), CHREC_RIGHT (poly1));
  t1 = chrec_fold_plus (type, t1, chrec_fold_multiply (type,
						       CHREC_RIGHT (poly0),
						       CHREC_LEFT (poly1)));
  /* "b*d".  */
  t2 = chrec_fold_multiply (type, CHREC_RIGHT (poly0), CHREC_RIGHT (poly1));
  /* "a*d + b*c + b*d".  */
  t1 = chrec_fold_plus (type, t1, t2);
  /* "2*b*d".  */
  t2 = chrec_fold_multiply (type, SCALAR_FLOAT_TYPE_P (type)
			    ? build_real (type, dconst2)
			    : build_int_cst (type, 2), t2);

  var = CHREC_VARIABLE (poly0);
  return build_polynomial_chrec (var, t0,
				 build_polynomial_chrec (var, t1, t2));
}

開發者ID:hemantjain95，項目名稱:gcc，代碼行數:60，代碼來源:tree-chrec.c

示例5: chrec_component_in_loop_num

static tree
chrec_component_in_loop_num (tree chrec,
			     unsigned loop_num,
			     bool right)
{
  tree component;
  struct loop *loop = get_loop (cfun, loop_num), *chloop;

  if (automatically_generated_chrec_p (chrec))
    return chrec;

  switch (TREE_CODE (chrec))
    {
    case POLYNOMIAL_CHREC:
      chloop = get_chrec_loop (chrec);

      if (chloop == loop)
	{
	  if (right)
	    component = CHREC_RIGHT (chrec);
	  else
	    component = CHREC_LEFT (chrec);

	  if (TREE_CODE (CHREC_LEFT (chrec)) != POLYNOMIAL_CHREC
	      || CHREC_VARIABLE (CHREC_LEFT (chrec)) != CHREC_VARIABLE (chrec))
	    return component;

	  else
	    return build_polynomial_chrec
	      (loop_num,
	       chrec_component_in_loop_num (CHREC_LEFT (chrec),
					    loop_num,
					    right),
	       component);
	}

      else if (flow_loop_nested_p (chloop, loop))
	/* There is no evolution part in this loop.  */
	return NULL_TREE;

      else
	{
	  gcc_assert (flow_loop_nested_p (loop, chloop));
	  return chrec_component_in_loop_num (CHREC_LEFT (chrec),
					      loop_num,
					      right);
	}

     default:
      if (right)
	return NULL_TREE;
      else
	return chrec;
    }
}

開發者ID:hemantjain95，項目名稱:gcc，代碼行數:55，代碼來源:tree-chrec.c

示例6: chrec_fold_multiply

tree
chrec_fold_multiply (tree type, 
		     tree op0,
		     tree op1)
{
  if (automatically_generated_chrec_p (op0)
      || automatically_generated_chrec_p (op1))
    return chrec_fold_automatically_generated_operands (op0, op1);
  
  switch (TREE_CODE (op0))
    {
    case POLYNOMIAL_CHREC:
      switch (TREE_CODE (op1))
	{
	case POLYNOMIAL_CHREC:
	  return chrec_fold_multiply_poly_poly (type, op0, op1);
	  
	default:
	  if (integer_onep (op1))
	    return op0;
	  if (integer_zerop (op1))
	    return build_int_cst (type, 0);
	  
	  return build_polynomial_chrec 
	    (CHREC_VARIABLE (op0), 
	     chrec_fold_multiply (type, CHREC_LEFT (op0), op1),
	     chrec_fold_multiply (type, CHREC_RIGHT (op0), op1));
	}
      
    default:
      if (integer_onep (op0))
	return op1;
      
      if (integer_zerop (op0))
    	return build_int_cst (type, 0);
      
      switch (TREE_CODE (op1))
	{
	case POLYNOMIAL_CHREC:
	  return build_polynomial_chrec 
	    (CHREC_VARIABLE (op1), 
	     chrec_fold_multiply (type, CHREC_LEFT (op1), op0),
	     chrec_fold_multiply (type, CHREC_RIGHT (op1), op0));
	  
	default:
	  if (integer_onep (op1))
	    return op0;
	  if (integer_zerop (op1))
	    return build_int_cst (type, 0);
	  return fold_build2 (MULT_EXPR, type, op0, op1);
	}
    }
}

開發者ID:AhmadTux，項目名稱:DragonFlyBSD，代碼行數:53，代碼來源:tree-chrec.c

示例7: is_multivariate_chrec

bool
is_multivariate_chrec (const_tree chrec)
{
  if (chrec == NULL_TREE)
    return false;

  if (TREE_CODE (chrec) == POLYNOMIAL_CHREC)
    return (is_multivariate_chrec_rec (CHREC_LEFT (chrec),
				       CHREC_VARIABLE (chrec))
	    || is_multivariate_chrec_rec (CHREC_RIGHT (chrec),
					  CHREC_VARIABLE (chrec)));
  else
    return false;
}

開發者ID:hemantjain95，項目名稱:gcc，代碼行數:14，代碼來源:tree-chrec.c

示例8: chrec_convert_aggressive

tree
chrec_convert_aggressive (tree type, tree chrec)
{
  tree inner_type, left, right, lc, rc, rtype;

  if (automatically_generated_chrec_p (chrec)
      || TREE_CODE (chrec) != POLYNOMIAL_CHREC)
    return NULL_TREE;

  inner_type = TREE_TYPE (chrec);
  if (TYPE_PRECISION (type) > TYPE_PRECISION (inner_type))
    return NULL_TREE;

  /* If we cannot perform arithmetic in TYPE, avoid creating an scev.  */
  if (avoid_arithmetics_in_type_p (type))
    return NULL_TREE;

  rtype = POINTER_TYPE_P (type) ? sizetype : type;

  left = CHREC_LEFT (chrec);
  right = CHREC_RIGHT (chrec);
  lc = chrec_convert_aggressive (type, left);
  if (!lc)
    lc = chrec_convert (type, left, NULL);
  rc = chrec_convert_aggressive (rtype, right);
  if (!rc)
    rc = chrec_convert (rtype, right, NULL);
 
  return build_polynomial_chrec (CHREC_VARIABLE (chrec), lc, rc);
}

開發者ID:AhmadTux，項目名稱:DragonFlyBSD，代碼行數:30，代碼來源:tree-chrec.c

示例9: evolution_function_is_univariate_p

bool
evolution_function_is_univariate_p (const_tree chrec)
{
  if (chrec == NULL_TREE)
    return true;

  switch (TREE_CODE (chrec))
    {
    case POLYNOMIAL_CHREC:
      switch (TREE_CODE (CHREC_LEFT (chrec)))
	{
	case POLYNOMIAL_CHREC:
	  if (CHREC_VARIABLE (chrec) != CHREC_VARIABLE (CHREC_LEFT (chrec)))
	    return false;
	  if (!evolution_function_is_univariate_p (CHREC_LEFT (chrec)))
	    return false;
	  break;

	default:
	  if (tree_contains_chrecs (CHREC_LEFT (chrec), NULL))
	    return false;
	  break;
	}

      switch (TREE_CODE (CHREC_RIGHT (chrec)))
	{
	case POLYNOMIAL_CHREC:
	  if (CHREC_VARIABLE (chrec) != CHREC_VARIABLE (CHREC_RIGHT (chrec)))
	    return false;
	  if (!evolution_function_is_univariate_p (CHREC_RIGHT (chrec)))
	    return false;
	  break;

	default:
	  if (tree_contains_chrecs (CHREC_RIGHT (chrec), NULL))
	    return false;
	  break;
	}

    default:
      return true;
    }
}

開發者ID:hemantjain95，項目名稱:gcc，代碼行數:43，代碼來源:tree-chrec.c

示例10: reset_evolution_in_loop

tree 
reset_evolution_in_loop (unsigned loop_num,
			 tree chrec, 
			 tree new_evol)
{
  if (TREE_CODE (chrec) == POLYNOMIAL_CHREC
      && CHREC_VARIABLE (chrec) > loop_num)
    return build2
      (TREE_CODE (chrec), 
       build_int_cst (NULL_TREE, CHREC_VARIABLE (chrec)), 
       reset_evolution_in_loop (loop_num, CHREC_LEFT (chrec), new_evol), 
       reset_evolution_in_loop (loop_num, CHREC_RIGHT (chrec), new_evol));
  
  while (TREE_CODE (chrec) == POLYNOMIAL_CHREC
	 && CHREC_VARIABLE (chrec) == loop_num)
    chrec = CHREC_LEFT (chrec);
  
  return build_polynomial_chrec (loop_num, chrec, new_evol);
}

開發者ID:DJHartley，項目名稱:iphone-dev，代碼行數:19，代碼來源:tree-chrec.c

示例11: evolution_function_is_affine_multivariate_p

bool
evolution_function_is_affine_multivariate_p (const_tree chrec, int loopnum)
{
  if (chrec == NULL_TREE)
    return false;

  switch (TREE_CODE (chrec))
    {
    case POLYNOMIAL_CHREC:
      if (evolution_function_is_invariant_rec_p (CHREC_LEFT (chrec), loopnum))
	{
	  if (evolution_function_is_invariant_rec_p (CHREC_RIGHT (chrec), loopnum))
	    return true;
	  else
	    {
	      if (TREE_CODE (CHREC_RIGHT (chrec)) == POLYNOMIAL_CHREC
		  && CHREC_VARIABLE (CHREC_RIGHT (chrec))
		     != CHREC_VARIABLE (chrec)
		  && evolution_function_is_affine_multivariate_p
		  (CHREC_RIGHT (chrec), loopnum))
		return true;
	      else
		return false;
	    }
	}
      else
	{
	  if (evolution_function_is_invariant_rec_p (CHREC_RIGHT (chrec), loopnum)
	      && TREE_CODE (CHREC_LEFT (chrec)) == POLYNOMIAL_CHREC
	      && CHREC_VARIABLE (CHREC_LEFT (chrec)) != CHREC_VARIABLE (chrec)
	      && evolution_function_is_affine_multivariate_p
	      (CHREC_LEFT (chrec), loopnum))
	    return true;
	  else
	    return false;
	}

    default:
      return false;
    }
}

開發者ID:hemantjain95，項目名稱:gcc，代碼行數:41，代碼來源:tree-chrec.c

示例12: chrec_convert

tree 
chrec_convert (tree type, 
	       tree chrec)
{
  tree ct;
  
  if (automatically_generated_chrec_p (chrec))
    return chrec;
  
  ct = chrec_type (chrec);
  if (ct == type)
    return chrec;

  if (TYPE_PRECISION (ct) < TYPE_PRECISION (type))
    return count_ev_in_wider_type (type, chrec);

  switch (TREE_CODE (chrec))
    {
    case POLYNOMIAL_CHREC:
      return build_polynomial_chrec (CHREC_VARIABLE (chrec),
				     chrec_convert (type,
						    CHREC_LEFT (chrec)),
				     chrec_convert (type,
						    CHREC_RIGHT (chrec)));

    default:
      {
	tree res = fold_convert (type, chrec);

	/* Don't propagate overflows.  */
	TREE_OVERFLOW (res) = 0;
	if (CONSTANT_CLASS_P (res))
	  TREE_CONSTANT_OVERFLOW (res) = 0;

	/* But reject constants that don't fit in their type after conversion.
	   This can happen if TYPE_MIN_VALUE or TYPE_MAX_VALUE are not the
	   natural values associated with TYPE_PRECISION and TYPE_UNSIGNED,
	   and can cause problems later when computing niters of loops.  Note
	   that we don't do the check before converting because we don't want
	   to reject conversions of negative chrecs to unsigned types.  */
	if (TREE_CODE (res) == INTEGER_CST
	    && TREE_CODE (type) == INTEGER_TYPE
	    && !int_fits_type_p (res, type))
	  res = chrec_dont_know;

	return res;
      }
    }
}

開發者ID:DJHartley，項目名稱:iphone-dev，代碼行數:49，代碼來源:tree-chrec.c

示例13: nb_vars_in_chrec

unsigned
nb_vars_in_chrec (tree chrec)
{
  if (chrec == NULL_TREE)
    return 0;

  switch (TREE_CODE (chrec))
    {
    case POLYNOMIAL_CHREC:
      return 1 + nb_vars_in_chrec
	(initial_condition_in_loop_num (chrec, CHREC_VARIABLE (chrec)));

    default:
      return 0;
    }
}

開發者ID:hemantjain95，項目名稱:gcc，代碼行數:16，代碼來源:tree-chrec.c

示例14: is_multivariate_chrec_rec

static bool
is_multivariate_chrec_rec (const_tree chrec, unsigned int rec_var)
{
  if (chrec == NULL_TREE)
    return false;

  if (TREE_CODE (chrec) == POLYNOMIAL_CHREC)
    {
      if (CHREC_VARIABLE (chrec) != rec_var)
	return true;
      else
	return (is_multivariate_chrec_rec (CHREC_LEFT (chrec), rec_var)
		|| is_multivariate_chrec_rec (CHREC_RIGHT (chrec), rec_var));
    }
  else
    return false;
}

開發者ID:hemantjain95，項目名稱:gcc，代碼行數:17，代碼來源:tree-chrec.c

示例15: chrec_convert_aggressive

tree
chrec_convert_aggressive (tree type, tree chrec, bool *fold_conversions)
{
  tree inner_type, left, right, lc, rc, rtype;

  gcc_assert (fold_conversions != NULL);

  if (automatically_generated_chrec_p (chrec)
      || TREE_CODE (chrec) != POLYNOMIAL_CHREC)
    return NULL_TREE;

  inner_type = TREE_TYPE (chrec);
  if (TYPE_PRECISION (type) > TYPE_PRECISION (inner_type))
    return NULL_TREE;

  if (useless_type_conversion_p (type, inner_type))
    return NULL_TREE;

  if (!*fold_conversions && evolution_function_is_affine_p (chrec))
    {
      tree base, step;
      struct loop *loop;

      loop = get_chrec_loop (chrec);
      base = CHREC_LEFT (chrec);
      step = CHREC_RIGHT (chrec);
      if (convert_affine_scev (loop, type, &base, &step, NULL, true))
	return build_polynomial_chrec (loop->num, base, step);
    }
  rtype = POINTER_TYPE_P (type) ? sizetype : type;

  left = CHREC_LEFT (chrec);
  right = CHREC_RIGHT (chrec);
  lc = chrec_convert_aggressive (type, left, fold_conversions);
  if (!lc)
    lc = chrec_convert (type, left, NULL);
  rc = chrec_convert_aggressive (rtype, right, fold_conversions);
  if (!rc)
    rc = chrec_convert (rtype, right, NULL);

  *fold_conversions = true;

  return build_polynomial_chrec (CHREC_VARIABLE (chrec), lc, rc);
}

開發者ID:hemantjain95，項目名稱:gcc，代碼行數:44，代碼來源:tree-chrec.c

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