/*

 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#ifndef SHARE_VM_OPTO_INTRINSICNODE_HPP

#define SHARE_VM_OPTO_INTRINSICNODE_HPP

#include "opto/node.hpp"

#include "opto/opcodes.hpp"

//----------------------PartialSubtypeCheckNode--------------------------------

// The 2nd slow-half of a subtype check.  Scan the subklass's 2ndary superklass

// array for an instance of the superklass.  Set a hidden internal cache on a

// hit (cache is checked with exposed code in gen_subtype_check()).  Return

// not zero for a miss or zero for a hit.

class PartialSubtypeCheckNode : public Node {

 public:

  PartialSubtypeCheckNode(Node* c, Node* sub, Node* super) : Node(c,sub,super) {}

  virtual int Opcode() const;

  virtual const Type* bottom_type() const { return TypeRawPtr::BOTTOM; }

  virtual uint ideal_reg() const { return Op_RegP; }

};

//------------------------------StrIntrinsic-------------------------------

// Base class for Ideal nodes used in String intrinsic code.

class StrIntrinsicNode: public Node {

 public:

  // Possible encodings of the two parameters passed to the string intrinsic.

  // 'L' stands for Latin1 and 'U' stands for UTF16. For example, 'LU' means that

  // the first string is Latin1 encoded and the second string is UTF16 encoded.

  typedef enum ArgEncoding { LL, LU, UL, UU, none } ArgEnc;

 protected:

  // Encoding of strings. Used to select the right version of the intrinsic.

  const ArgEncoding _encoding;

  virtual uint size_of() const;

 public:

  StrIntrinsicNode(Node* control, Node* char_array_mem,

                   Node* s1, Node* c1, Node* s2, Node* c2, ArgEncoding encoding):

  Node(control, char_array_mem, s1, c1, s2, c2), _encoding(encoding) {

  }

  StrIntrinsicNode(Node* control, Node* char_array_mem,

                   Node* s1, Node* s2, Node* c, ArgEncoding encoding):

  Node(control, char_array_mem, s1, s2, c), _encoding(encoding) {

  }

  StrIntrinsicNode(Node* control, Node* char_array_mem,

                   Node* s1, Node* s2, ArgEncoding encoding):

  Node(control, char_array_mem, s1, s2), _encoding(encoding) {

  }

  virtual bool depends_only_on_test() const { return false; }

  virtual const TypePtr* adr_type() const { return TypeAryPtr::BYTES; }

  virtual uint match_edge(uint idx) const;

  virtual uint ideal_reg() const { return Op_RegI; }

  virtual Node* Ideal(PhaseGVN* phase, bool can_reshape);

  virtual const Type* Value(PhaseTransform* phase) const;

  ArgEncoding encoding() const { return _encoding; }

};

//------------------------------StrComp-------------------------------------

class StrCompNode: public StrIntrinsicNode {

 public:

  StrCompNode(Node* control, Node* char_array_mem,

              Node* s1, Node* c1, Node* s2, Node* c2, ArgEncoding encoding):

  StrIntrinsicNode(control, char_array_mem, s1, c1, s2, c2, encoding) {};

  virtual int Opcode() const;

  virtual const Type* bottom_type() const { return TypeInt::INT; }

};

//------------------------------StrEquals-------------------------------------

class StrEqualsNode: public StrIntrinsicNode {

 public:

  StrEqualsNode(Node* control, Node* char_array_mem,

                Node* s1, Node* s2, Node* c, ArgEncoding encoding):

  StrIntrinsicNode(control, char_array_mem, s1, s2, c, encoding) {};

  virtual int Opcode() const;

  virtual const Type* bottom_type() const { return TypeInt::BOOL; }

};

//------------------------------StrIndexOf-------------------------------------

class StrIndexOfNode: public StrIntrinsicNode {

 public:

  StrIndexOfNode(Node* control, Node* char_array_mem,

                 Node* s1, Node* c1, Node* s2, Node* c2, ArgEncoding encoding):

  StrIntrinsicNode(control, char_array_mem, s1, c1, s2, c2, encoding) {};

  virtual int Opcode() const;

  virtual const Type* bottom_type() const { return TypeInt::INT; }

};

//------------------------------StrIndexOfChar-------------------------------------

class StrIndexOfCharNode: public StrIntrinsicNode {

 public:

  StrIndexOfCharNode(Node* control, Node* char_array_mem,

                     Node* s1, Node* c1, Node* c, ArgEncoding encoding):

  StrIntrinsicNode(control, char_array_mem, s1, c1, c, encoding) {};

  virtual int Opcode() const;

  virtual const Type* bottom_type() const { return TypeInt::INT; }

};

//--------------------------StrCompressedCopy-------------------------------

class StrCompressedCopyNode: public StrIntrinsicNode {

 public:

  StrCompressedCopyNode(Node* control, Node* arymem,

                        Node* s1, Node* s2, Node* c):

  StrIntrinsicNode(control, arymem, s1, s2, c, none) {};

  virtual int Opcode() const;

  virtual const Type* bottom_type() const { return TypeInt::INT; }

  virtual const TypePtr* adr_type() const { return TypePtr::BOTTOM; }

  virtual Node* Ideal(PhaseGVN* phase, bool can_reshape);

};

//--------------------------StrInflatedCopy---------------------------------

class StrInflatedCopyNode: public StrIntrinsicNode {

 public:

  StrInflatedCopyNode(Node* control, Node* arymem,

                      Node* s1, Node* s2, Node* c):

  StrIntrinsicNode(control, arymem, s1, s2, c, none) {};

  virtual int Opcode() const;

  virtual const Type* bottom_type() const { return Type::MEMORY; }

  virtual const TypePtr* adr_type() const { return TypePtr::BOTTOM; }

  virtual Node* Ideal(PhaseGVN* phase, bool can_reshape);

};

//------------------------------AryEq---------------------------------------

class AryEqNode: public StrIntrinsicNode {

 public:

  AryEqNode(Node* control, Node* char_array_mem,

            Node* s1, Node* s2, ArgEncoding encoding):

  StrIntrinsicNode(control, char_array_mem, s1, s2, encoding) {};

  virtual int Opcode() const;

  virtual const Type* bottom_type() const { return TypeInt::BOOL; }

};

//------------------------------HasNegatives---------------------------------

class HasNegativesNode: public StrIntrinsicNode {

 public:

  HasNegativesNode(Node* control, Node* char_array_mem, Node* s1, Node* c1):

  StrIntrinsicNode(control, char_array_mem, s1, c1, none) {};

  virtual int Opcode() const;

  virtual const Type* bottom_type() const { return TypeInt::BOOL; }

};

//------------------------------EncodeISOArray--------------------------------

// encode char[] to byte[] in ISO_8859_1

class EncodeISOArrayNode: public Node {

 public:

  EncodeISOArrayNode(Node* control, Node* arymem, Node* s1, Node* s2, Node* c): Node(control, arymem, s1, s2, c) {};

  virtual int Opcode() const;

  virtual bool depends_only_on_test() const { return false; }

  virtual const Type* bottom_type() const { return TypeInt::INT; }

  virtual const TypePtr* adr_type() const { return TypePtr::BOTTOM; }

  virtual uint match_edge(uint idx) const;

  virtual uint ideal_reg() const { return Op_RegI; }

  virtual Node* Ideal(PhaseGVN* phase, bool can_reshape);

  virtual const Type* Value(PhaseTransform* phase) const;

};

#endif // SHARE_VM_OPTO_INTRINSICNODE_HPP