duke@435: /*
duke@435:  * Copyright 1997-2007 Sun Microsystems, Inc.  All Rights Reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
duke@435:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435:  * CA 95054 USA or visit www.sun.com if you need additional information or
duke@435:  * have any questions.
duke@435:  *
duke@435:  */
duke@435: 
duke@435: class PhaseTransform;
duke@435: class MachNode;
duke@435: 
duke@435: //------------------------------ConNode----------------------------------------
duke@435: // Simple constants
duke@435: class ConNode : public TypeNode {
duke@435: public:
duke@435:   ConNode( const Type *t ) : TypeNode(t,1) {
duke@435:     init_req(0, (Node*)Compile::current()->root());
duke@435:     init_flags(Flag_is_Con);
duke@435:   }
duke@435:   virtual int  Opcode() const;
duke@435:   virtual uint hash() const;
duke@435:   virtual const RegMask &out_RegMask() const { return RegMask::Empty; }
duke@435:   virtual const RegMask &in_RegMask(uint) const { return RegMask::Empty; }
duke@435: 
duke@435:   // Polymorphic factory method:
duke@435:   static ConNode* make( Compile* C, const Type *t );
duke@435: };
duke@435: 
duke@435: //------------------------------ConINode---------------------------------------
duke@435: // Simple integer constants
duke@435: class ConINode : public ConNode {
duke@435: public:
duke@435:   ConINode( const TypeInt *t ) : ConNode(t) {}
duke@435:   virtual int Opcode() const;
duke@435: 
duke@435:   // Factory method:
duke@435:   static ConINode* make( Compile* C, int con ) {
duke@435:     return new (C, 1) ConINode( TypeInt::make(con) );
duke@435:   }
duke@435: 
duke@435: };
duke@435: 
duke@435: //------------------------------ConPNode---------------------------------------
duke@435: // Simple pointer constants
duke@435: class ConPNode : public ConNode {
duke@435: public:
duke@435:   ConPNode( const TypePtr *t ) : ConNode(t) {}
duke@435:   virtual int Opcode() const;
duke@435: 
duke@435:   // Factory methods:
duke@435:   static ConPNode* make( Compile *C ,address con ) {
duke@435:     if (con == NULL)
duke@435:       return new (C, 1) ConPNode( TypePtr::NULL_PTR ) ;
duke@435:     else
duke@435:       return new (C, 1) ConPNode( TypeRawPtr::make(con) );
duke@435:   }
duke@435: 
duke@435:   static ConPNode* make( Compile *C, ciObject* con ) {
duke@435:     return new (C, 1) ConPNode( TypeOopPtr::make_from_constant(con) );
duke@435:   }
duke@435: 
duke@435: };
duke@435: 
duke@435: 
duke@435: //------------------------------ConLNode---------------------------------------
duke@435: // Simple long constants
duke@435: class ConLNode : public ConNode {
duke@435: public:
duke@435:   ConLNode( const TypeLong *t ) : ConNode(t) {}
duke@435:   virtual int Opcode() const;
duke@435: 
duke@435:   // Factory method:
duke@435:   static ConLNode* make( Compile *C ,jlong con ) {
duke@435:     return new (C, 1) ConLNode( TypeLong::make(con) );
duke@435:   }
duke@435: 
duke@435: };
duke@435: 
duke@435: //------------------------------ConFNode---------------------------------------
duke@435: // Simple float constants
duke@435: class ConFNode : public ConNode {
duke@435: public:
duke@435:   ConFNode( const TypeF *t ) : ConNode(t) {}
duke@435:   virtual int Opcode() const;
duke@435: 
duke@435:   // Factory method:
duke@435:   static ConFNode* make( Compile *C, float con  ) {
duke@435:     return new (C, 1) ConFNode( TypeF::make(con) );
duke@435:   }
duke@435: 
duke@435: };
duke@435: 
duke@435: //------------------------------ConDNode---------------------------------------
duke@435: // Simple double constants
duke@435: class ConDNode : public ConNode {
duke@435: public:
duke@435:   ConDNode( const TypeD *t ) : ConNode(t) {}
duke@435:   virtual int Opcode() const;
duke@435: 
duke@435:   // Factory method:
duke@435:   static ConDNode* make( Compile *C, double con ) {
duke@435:     return new (C, 1) ConDNode( TypeD::make(con) );
duke@435:   }
duke@435: 
duke@435: };
duke@435: 
duke@435: //------------------------------BinaryNode-------------------------------------
duke@435: // Place holder for the 2 conditional inputs to a CMove.  CMove needs 4
duke@435: // inputs: the Bool (for the lt/gt/eq/ne bits), the flags (result of some
duke@435: // compare), and the 2 values to select between.  The Matcher requires a
duke@435: // binary tree so we break it down like this:
duke@435: //     (CMove (Binary bol cmp) (Binary src1 src2))
duke@435: class BinaryNode : public Node {
duke@435: public:
duke@435:   BinaryNode( Node *n1, Node *n2 ) : Node(0,n1,n2) { }
duke@435:   virtual int Opcode() const;
duke@435:   virtual uint ideal_reg() const { return 0; }
duke@435: };
duke@435: 
duke@435: //------------------------------CMoveNode--------------------------------------
duke@435: // Conditional move
duke@435: class CMoveNode : public TypeNode {
duke@435: public:
duke@435:   enum { Control,               // When is it safe to do this cmove?
duke@435:          Condition,             // Condition controlling the cmove
duke@435:          IfFalse,               // Value if condition is false
duke@435:          IfTrue };              // Value if condition is true
duke@435:   CMoveNode( Node *bol, Node *left, Node *right, const Type *t ) : TypeNode(t,4)
duke@435:   {
duke@435:     init_class_id(Class_CMove);
duke@435:     // all inputs are nullified in Node::Node(int)
duke@435:     // init_req(Control,NULL);
duke@435:     init_req(Condition,bol);
duke@435:     init_req(IfFalse,left);
duke@435:     init_req(IfTrue,right);
duke@435:   }
duke@435:   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435:   virtual const Type *Value( PhaseTransform *phase ) const;
duke@435:   virtual Node *Identity( PhaseTransform *phase );
duke@435:   static CMoveNode *make( Compile *C, Node *c, Node *bol, Node *left, Node *right, const Type *t );
duke@435:   // Helper function to spot cmove graph shapes
duke@435:   static Node *is_cmove_id( PhaseTransform *phase, Node *cmp, Node *t, Node *f, BoolNode *b );
duke@435: };
duke@435: 
duke@435: //------------------------------CMoveDNode-------------------------------------
duke@435: class CMoveDNode : public CMoveNode {
duke@435: public:
duke@435:   CMoveDNode( Node *bol, Node *left, Node *right, const Type* t) : CMoveNode(bol,left,right,t){}
duke@435:   virtual int Opcode() const;
duke@435:   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435: };
duke@435: 
duke@435: //------------------------------CMoveFNode-------------------------------------
duke@435: class CMoveFNode : public CMoveNode {
duke@435: public:
duke@435:   CMoveFNode( Node *bol, Node *left, Node *right, const Type* t ) : CMoveNode(bol,left,right,t) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435: };
duke@435: 
duke@435: //------------------------------CMoveINode-------------------------------------
duke@435: class CMoveINode : public CMoveNode {
duke@435: public:
duke@435:   CMoveINode( Node *bol, Node *left, Node *right, const TypeInt *ti ) : CMoveNode(bol,left,right,ti){}
duke@435:   virtual int Opcode() const;
duke@435:   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435: };
duke@435: 
duke@435: //------------------------------CMoveLNode-------------------------------------
duke@435: class CMoveLNode : public CMoveNode {
duke@435: public:
duke@435:   CMoveLNode(Node *bol, Node *left, Node *right, const TypeLong *tl ) : CMoveNode(bol,left,right,tl){}
duke@435:   virtual int Opcode() const;
duke@435: };
duke@435: 
duke@435: //------------------------------CMovePNode-------------------------------------
duke@435: class CMovePNode : public CMoveNode {
duke@435: public:
duke@435:   CMovePNode( Node *c, Node *bol, Node *left, Node *right, const TypePtr* t ) : CMoveNode(bol,left,right,t) { init_req(Control,c); }
duke@435:   virtual int Opcode() const;
duke@435: };
duke@435: 
duke@435: //------------------------------ConstraintCastNode-------------------------------------
duke@435: // cast to a different range
duke@435: class ConstraintCastNode: public TypeNode {
duke@435: public:
duke@435:   ConstraintCastNode (Node *n, const Type *t ): TypeNode(t,2) {
duke@435:     init_class_id(Class_ConstraintCast);
duke@435:     init_req(1, n);
duke@435:   }
duke@435:   virtual Node *Identity( PhaseTransform *phase );
duke@435:   virtual const Type *Value( PhaseTransform *phase ) const;
duke@435:   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435:   virtual int Opcode() const;
duke@435:   virtual uint ideal_reg() const = 0;
duke@435:   virtual Node *Ideal_DU_postCCP( PhaseCCP * );
duke@435: };
duke@435: 
duke@435: //------------------------------CastIINode-------------------------------------
duke@435: // cast integer to integer (different range)
duke@435: class CastIINode: public ConstraintCastNode {
duke@435: public:
duke@435:   CastIINode (Node *n, const Type *t ): ConstraintCastNode(n,t) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual uint ideal_reg() const { return Op_RegI; }
duke@435: };
duke@435: 
duke@435: //------------------------------CastPPNode-------------------------------------
duke@435: // cast pointer to pointer (different type)
duke@435: class CastPPNode: public ConstraintCastNode {
duke@435: public:
duke@435:   CastPPNode (Node *n, const Type *t ): ConstraintCastNode(n, t) {
duke@435:     // Only CastPP is safe.  CastII can cause optimizer loops.
duke@435:     init_flags(Flag_is_dead_loop_safe);
duke@435:   }
duke@435:   virtual int Opcode() const;
duke@435:   virtual uint ideal_reg() const { return Op_RegP; }
duke@435:   virtual Node *Ideal_DU_postCCP( PhaseCCP * );
duke@435: };
duke@435: 
duke@435: //------------------------------CheckCastPPNode--------------------------------
duke@435: // for _checkcast, cast pointer to pointer (different type), without JOIN,
duke@435: class CheckCastPPNode: public TypeNode {
duke@435: public:
duke@435:   CheckCastPPNode( Node *c, Node *n, const Type *t ) : TypeNode(t,2) {
duke@435:     init_class_id(Class_CheckCastPP);
duke@435:     init_flags(Flag_is_dead_loop_safe);
duke@435:     init_req(0, c);
duke@435:     init_req(1, n);
duke@435:   }
duke@435:   virtual Node *Identity( PhaseTransform *phase );
duke@435:   virtual const Type *Value( PhaseTransform *phase ) const;
duke@435:   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435:   virtual int   Opcode() const;
duke@435:   virtual uint  ideal_reg() const { return Op_RegP; }
duke@435:   // No longer remove CheckCast after CCP as it gives me a place to hang
duke@435:   // the proper address type - which is required to compute anti-deps.
duke@435:   //virtual Node *Ideal_DU_postCCP( PhaseCCP * );
duke@435: };
duke@435: 
duke@435: //------------------------------Conv2BNode-------------------------------------
duke@435: // Convert int/pointer to a Boolean.  Map zero to zero, all else to 1.
duke@435: class Conv2BNode : public Node {
duke@435: public:
duke@435:   Conv2BNode( Node *i ) : Node(0,i) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return TypeInt::BOOL; }
duke@435:   virtual Node *Identity( PhaseTransform *phase );
duke@435:   virtual const Type *Value( PhaseTransform *phase ) const;
duke@435:   virtual uint  ideal_reg() const { return Op_RegI; }
duke@435: };
duke@435: 
duke@435: // The conversions operations are all Alpha sorted.  Please keep it that way!
duke@435: //------------------------------ConvD2FNode------------------------------------
duke@435: // Convert double to float
duke@435: class ConvD2FNode : public Node {
duke@435: public:
duke@435:   ConvD2FNode( Node *in1 ) : Node(0,in1) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return Type::FLOAT; }
duke@435:   virtual const Type *Value( PhaseTransform *phase ) const;
duke@435:   virtual Node *Identity( PhaseTransform *phase );
duke@435:   virtual uint  ideal_reg() const { return Op_RegF; }
duke@435: };
duke@435: 
duke@435: //------------------------------ConvD2INode------------------------------------
duke@435: // Convert Double to Integer
duke@435: class ConvD2INode : public Node {
duke@435: public:
duke@435:   ConvD2INode( Node *in1 ) : Node(0,in1) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return TypeInt::INT; }
duke@435:   virtual const Type *Value( PhaseTransform *phase ) const;
duke@435:   virtual Node *Identity( PhaseTransform *phase );
duke@435:   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435:   virtual uint  ideal_reg() const { return Op_RegI; }
duke@435: };
duke@435: 
duke@435: //------------------------------ConvD2LNode------------------------------------
duke@435: // Convert Double to Long
duke@435: class ConvD2LNode : public Node {
duke@435: public:
duke@435:   ConvD2LNode( Node *dbl ) : Node(0,dbl) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return TypeLong::LONG; }
duke@435:   virtual const Type *Value( PhaseTransform *phase ) const;
duke@435:   virtual Node *Identity( PhaseTransform *phase );
duke@435:   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435:   virtual uint ideal_reg() const { return Op_RegL; }
duke@435: };
duke@435: 
duke@435: //------------------------------ConvF2DNode------------------------------------
duke@435: // Convert Float to a Double.
duke@435: class ConvF2DNode : public Node {
duke@435: public:
duke@435:   ConvF2DNode( Node *in1 ) : Node(0,in1) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return Type::DOUBLE; }
duke@435:   virtual const Type *Value( PhaseTransform *phase ) const;
duke@435:   virtual uint  ideal_reg() const { return Op_RegD; }
duke@435: };
duke@435: 
duke@435: //------------------------------ConvF2INode------------------------------------
duke@435: // Convert float to integer
duke@435: class ConvF2INode : public Node {
duke@435: public:
duke@435:   ConvF2INode( Node *in1 ) : Node(0,in1) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return TypeInt::INT; }
duke@435:   virtual const Type *Value( PhaseTransform *phase ) const;
duke@435:   virtual Node *Identity( PhaseTransform *phase );
duke@435:   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435:   virtual uint  ideal_reg() const { return Op_RegI; }
duke@435: };
duke@435: 
duke@435: //------------------------------ConvF2LNode------------------------------------
duke@435: // Convert float to long
duke@435: class ConvF2LNode : public Node {
duke@435: public:
duke@435:   ConvF2LNode( Node *in1 ) : Node(0,in1) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return TypeLong::LONG; }
duke@435:   virtual const Type *Value( PhaseTransform *phase ) const;
duke@435:   virtual Node *Identity( PhaseTransform *phase );
duke@435:   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435:   virtual uint  ideal_reg() const { return Op_RegL; }
duke@435: };
duke@435: 
duke@435: //------------------------------ConvI2DNode------------------------------------
duke@435: // Convert Integer to Double
duke@435: class ConvI2DNode : public Node {
duke@435: public:
duke@435:   ConvI2DNode( Node *in1 ) : Node(0,in1) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return Type::DOUBLE; }
duke@435:   virtual const Type *Value( PhaseTransform *phase ) const;
duke@435:   virtual uint  ideal_reg() const { return Op_RegD; }
duke@435: };
duke@435: 
duke@435: //------------------------------ConvI2FNode------------------------------------
duke@435: // Convert Integer to Float
duke@435: class ConvI2FNode : public Node {
duke@435: public:
duke@435:   ConvI2FNode( Node *in1 ) : Node(0,in1) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return Type::FLOAT; }
duke@435:   virtual const Type *Value( PhaseTransform *phase ) const;
duke@435:   virtual Node *Identity( PhaseTransform *phase );
duke@435:   virtual uint  ideal_reg() const { return Op_RegF; }
duke@435: };
duke@435: 
duke@435: //------------------------------ConvI2LNode------------------------------------
duke@435: // Convert integer to long
duke@435: class ConvI2LNode : public TypeNode {
duke@435: public:
duke@435:   ConvI2LNode(Node *in1, const TypeLong* t = TypeLong::INT)
duke@435:     : TypeNode(t, 2)
duke@435:   { init_req(1, in1); }
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *Value( PhaseTransform *phase ) const;
duke@435:   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435:   virtual uint  ideal_reg() const { return Op_RegL; }
duke@435: };
duke@435: 
duke@435: //------------------------------ConvL2DNode------------------------------------
duke@435: // Convert Long to Double
duke@435: class ConvL2DNode : public Node {
duke@435: public:
duke@435:   ConvL2DNode( Node *in1 ) : Node(0,in1) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return Type::DOUBLE; }
duke@435:   virtual const Type *Value( PhaseTransform *phase ) const;
duke@435:   virtual uint ideal_reg() const { return Op_RegD; }
duke@435: };
duke@435: 
duke@435: //------------------------------ConvL2FNode------------------------------------
duke@435: // Convert Long to Float
duke@435: class ConvL2FNode : public Node {
duke@435: public:
duke@435:   ConvL2FNode( Node *in1 ) : Node(0,in1) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return Type::FLOAT; }
duke@435:   virtual const Type *Value( PhaseTransform *phase ) const;
duke@435:   virtual uint  ideal_reg() const { return Op_RegF; }
duke@435: };
duke@435: 
duke@435: //------------------------------ConvL2INode------------------------------------
duke@435: // Convert long to integer
duke@435: class ConvL2INode : public Node {
duke@435: public:
duke@435:   ConvL2INode( Node *in1 ) : Node(0,in1) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return TypeInt::INT; }
duke@435:   virtual Node *Identity( PhaseTransform *phase );
duke@435:   virtual const Type *Value( PhaseTransform *phase ) const;
duke@435:   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435:   virtual uint  ideal_reg() const { return Op_RegI; }
duke@435: };
duke@435: 
duke@435: //------------------------------CastX2PNode-------------------------------------
duke@435: // convert a machine-pointer-sized integer to a raw pointer
duke@435: class CastX2PNode : public Node {
duke@435: public:
duke@435:   CastX2PNode( Node *n ) : Node(NULL, n) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *Value( PhaseTransform *phase ) const;
duke@435:   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435:   virtual Node *Identity( PhaseTransform *phase );
duke@435:   virtual uint ideal_reg() const { return Op_RegP; }
duke@435:   virtual const Type *bottom_type() const { return TypeRawPtr::BOTTOM; }
duke@435: };
duke@435: 
duke@435: //------------------------------CastP2XNode-------------------------------------
duke@435: // Used in both 32-bit and 64-bit land.
duke@435: // Used for card-marks and unsafe pointer math.
duke@435: class CastP2XNode : public Node {
duke@435: public:
duke@435:   CastP2XNode( Node *ctrl, Node *n ) : Node(ctrl, n) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *Value( PhaseTransform *phase ) const;
duke@435:   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435:   virtual Node *Identity( PhaseTransform *phase );
duke@435:   virtual uint ideal_reg() const { return Op_RegX; }
duke@435:   virtual const Type *bottom_type() const { return TypeX_X; }
duke@435:   // Return false to keep node from moving away from an associated card mark.
duke@435:   virtual bool depends_only_on_test() const { return false; }
duke@435: };
duke@435: 
duke@435: //------------------------------MemMoveNode------------------------------------
duke@435: // Memory to memory move.  Inserted very late, after allocation.
duke@435: class MemMoveNode : public Node {
duke@435: public:
duke@435:   MemMoveNode( Node *dst, Node *src ) : Node(0,dst,src) {}
duke@435:   virtual int Opcode() const;
duke@435: };
duke@435: 
duke@435: //------------------------------ThreadLocalNode--------------------------------
duke@435: // Ideal Node which returns the base of ThreadLocalStorage.
duke@435: class ThreadLocalNode : public Node {
duke@435: public:
duke@435:   ThreadLocalNode( ) : Node((Node*)Compile::current()->root()) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return TypeRawPtr::BOTTOM;}
duke@435:   virtual uint ideal_reg() const { return Op_RegP; }
duke@435: };
duke@435: 
duke@435: //------------------------------LoadReturnPCNode-------------------------------
duke@435: class LoadReturnPCNode: public Node {
duke@435: public:
duke@435:   LoadReturnPCNode(Node *c) : Node(c) { }
duke@435:   virtual int Opcode() const;
duke@435:   virtual uint ideal_reg() const { return Op_RegP; }
duke@435: };
duke@435: 
duke@435: 
duke@435: //-----------------------------RoundFloatNode----------------------------------
duke@435: class RoundFloatNode: public Node {
duke@435: public:
duke@435:   RoundFloatNode(Node* c, Node *in1): Node(c, in1) {}
duke@435:   virtual int   Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return Type::FLOAT; }
duke@435:   virtual uint  ideal_reg() const { return Op_RegF; }
duke@435:   virtual Node *Identity( PhaseTransform *phase );
duke@435:   virtual const Type *Value( PhaseTransform *phase ) const;
duke@435: };
duke@435: 
duke@435: 
duke@435: //-----------------------------RoundDoubleNode---------------------------------
duke@435: class RoundDoubleNode: public Node {
duke@435: public:
duke@435:   RoundDoubleNode(Node* c, Node *in1): Node(c, in1) {}
duke@435:   virtual int   Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return Type::DOUBLE; }
duke@435:   virtual uint  ideal_reg() const { return Op_RegD; }
duke@435:   virtual Node *Identity( PhaseTransform *phase );
duke@435:   virtual const Type *Value( PhaseTransform *phase ) const;
duke@435: };
duke@435: 
duke@435: //------------------------------Opaque1Node------------------------------------
duke@435: // A node to prevent unwanted optimizations.  Allows constant folding.
duke@435: // Stops value-numbering, Ideal calls or Identity functions.
duke@435: class Opaque1Node : public Node {
duke@435:   virtual uint hash() const ;                  // { return NO_HASH; }
duke@435:   virtual uint cmp( const Node &n ) const;
duke@435: public:
duke@435:   Opaque1Node( Node *n ) : Node(0,n) {}
duke@435:   // Special version for the pre-loop to hold the original loop limit
duke@435:   // which is consumed by range check elimination.
duke@435:   Opaque1Node( Node *n, Node* orig_limit ) : Node(0,n,orig_limit) {}
duke@435:   Node* original_loop_limit() { return req()==3 ? in(2) : NULL; }
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return TypeInt::INT; }
duke@435:   virtual Node *Identity( PhaseTransform *phase );
duke@435: };
duke@435: 
duke@435: //------------------------------Opaque2Node------------------------------------
duke@435: // A node to prevent unwanted optimizations.  Allows constant folding.  Stops
duke@435: // value-numbering, most Ideal calls or Identity functions.  This Node is
duke@435: // specifically designed to prevent the pre-increment value of a loop trip
duke@435: // counter from being live out of the bottom of the loop (hence causing the
duke@435: // pre- and post-increment values both being live and thus requiring an extra
duke@435: // temp register and an extra move).  If we "accidentally" optimize through
duke@435: // this kind of a Node, we'll get slightly pessimal, but correct, code.  Thus
duke@435: // it's OK to be slightly sloppy on optimizations here.
duke@435: class Opaque2Node : public Node {
duke@435:   virtual uint hash() const ;                  // { return NO_HASH; }
duke@435:   virtual uint cmp( const Node &n ) const;
duke@435: public:
duke@435:   Opaque2Node( Node *n ) : Node(0,n) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return TypeInt::INT; }
duke@435: };
duke@435: 
duke@435: //----------------------PartialSubtypeCheckNode--------------------------------
duke@435: // The 2nd slow-half of a subtype check.  Scan the subklass's 2ndary superklass
duke@435: // array for an instance of the superklass.  Set a hidden internal cache on a
duke@435: // hit (cache is checked with exposed code in gen_subtype_check()).  Return
duke@435: // not zero for a miss or zero for a hit.
duke@435: class PartialSubtypeCheckNode : public Node {
duke@435: public:
duke@435:   PartialSubtypeCheckNode(Node* c, Node* sub, Node* super) : Node(c,sub,super) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return TypeRawPtr::BOTTOM; }
duke@435:   virtual uint ideal_reg() const { return Op_RegP; }
duke@435: };
duke@435: 
duke@435: //
duke@435: class MoveI2FNode : public Node {
duke@435:  public:
duke@435:   MoveI2FNode( Node *value ) : Node(0,value) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return Type::FLOAT; }
duke@435:   virtual uint ideal_reg() const { return Op_RegF; }
duke@435:   virtual const Type* Value( PhaseTransform *phase ) const;
duke@435: };
duke@435: 
duke@435: class MoveL2DNode : public Node {
duke@435:  public:
duke@435:   MoveL2DNode( Node *value ) : Node(0,value) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return Type::DOUBLE; }
duke@435:   virtual uint ideal_reg() const { return Op_RegD; }
duke@435:   virtual const Type* Value( PhaseTransform *phase ) const;
duke@435: };
duke@435: 
duke@435: class MoveF2INode : public Node {
duke@435:  public:
duke@435:   MoveF2INode( Node *value ) : Node(0,value) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return TypeInt::INT; }
duke@435:   virtual uint ideal_reg() const { return Op_RegI; }
duke@435:   virtual const Type* Value( PhaseTransform *phase ) const;
duke@435: };
duke@435: 
duke@435: class MoveD2LNode : public Node {
duke@435:  public:
duke@435:   MoveD2LNode( Node *value ) : Node(0,value) {}
duke@435:   virtual int Opcode() const;
duke@435:   virtual const Type *bottom_type() const { return TypeLong::LONG; }
duke@435:   virtual uint ideal_reg() const { return Op_RegL; }
duke@435:   virtual const Type* Value( PhaseTransform *phase ) const;
duke@435: };