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src/share/vm/opto/connode.hpp@a76240c8b133 (annotated)

src/share/vm/opto/connode.hpp

Mon, 28 Apr 2008 08:08:12 -0700

author

rasbold

date

Mon, 28 Apr 2008 08:08:12 -0700

changeset 563

a76240c8b133

parent 561

72f4a668df19

child 598

885ed790ecf0

permissions

-rw-r--r--

Merge

duke@435	1	/*
duke@435	2	* Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	class PhaseTransform;
duke@435	26	class MachNode;
duke@435	27
duke@435	28	//------------------------------ConNode----------------------------------------
duke@435	29	// Simple constants
duke@435	30	class ConNode : public TypeNode {
duke@435	31	public:
duke@435	32	ConNode( const Type *t ) : TypeNode(t,1) {
duke@435	33	init_req(0, (Node*)Compile::current()->root());
duke@435	34	init_flags(Flag_is_Con);
duke@435	35	}
duke@435	36	virtual int Opcode() const;
duke@435	37	virtual uint hash() const;
duke@435	38	virtual const RegMask &out_RegMask() const { return RegMask::Empty; }
duke@435	39	virtual const RegMask &in_RegMask(uint) const { return RegMask::Empty; }
duke@435	40
duke@435	41	// Polymorphic factory method:
duke@435	42	static ConNode* make( Compile* C, const Type *t );
duke@435	43	};
duke@435	44
duke@435	45	//------------------------------ConINode---------------------------------------
duke@435	46	// Simple integer constants
duke@435	47	class ConINode : public ConNode {
duke@435	48	public:
duke@435	49	ConINode( const TypeInt *t ) : ConNode(t) {}
duke@435	50	virtual int Opcode() const;
duke@435	51
duke@435	52	// Factory method:
duke@435	53	static ConINode* make( Compile* C, int con ) {
duke@435	54	return new (C, 1) ConINode( TypeInt::make(con) );
duke@435	55	}
duke@435	56
duke@435	57	};
duke@435	58
duke@435	59	//------------------------------ConPNode---------------------------------------
duke@435	60	// Simple pointer constants
duke@435	61	class ConPNode : public ConNode {
duke@435	62	public:
duke@435	63	ConPNode( const TypePtr *t ) : ConNode(t) {}
duke@435	64	virtual int Opcode() const;
duke@435	65
duke@435	66	// Factory methods:
duke@435	67	static ConPNode* make( Compile *C ,address con ) {
duke@435	68	if (con == NULL)
duke@435	69	return new (C, 1) ConPNode( TypePtr::NULL_PTR ) ;
duke@435	70	else
duke@435	71	return new (C, 1) ConPNode( TypeRawPtr::make(con) );
duke@435	72	}
duke@435	73
duke@435	74	static ConPNode* make( Compile *C, ciObject* con ) {
duke@435	75	return new (C, 1) ConPNode( TypeOopPtr::make_from_constant(con) );
duke@435	76	}
duke@435	77
duke@435	78	};
duke@435	79
duke@435	80
coleenp@548	81	//------------------------------ConNNode--------------------------------------
coleenp@548	82	// Simple narrow oop constants
coleenp@548	83	class ConNNode : public ConNode {
coleenp@548	84	public:
coleenp@548	85	ConNNode( const TypeNarrowOop *t ) : ConNode(t) {}
coleenp@548	86	virtual int Opcode() const;
coleenp@548	87
coleenp@548	88	static ConNNode* make( Compile *C, ciObject* con ) {
coleenp@548	89	return new (C, 1) ConNNode( TypeNarrowOop::make_from_constant(con) );
coleenp@548	90	}
coleenp@548	91
coleenp@548	92	};
coleenp@548	93
coleenp@548	94
duke@435	95	//------------------------------ConLNode---------------------------------------
duke@435	96	// Simple long constants
duke@435	97	class ConLNode : public ConNode {
duke@435	98	public:
duke@435	99	ConLNode( const TypeLong *t ) : ConNode(t) {}
duke@435	100	virtual int Opcode() const;
duke@435	101
duke@435	102	// Factory method:
duke@435	103	static ConLNode* make( Compile *C ,jlong con ) {
duke@435	104	return new (C, 1) ConLNode( TypeLong::make(con) );
duke@435	105	}
duke@435	106
duke@435	107	};
duke@435	108
duke@435	109	//------------------------------ConFNode---------------------------------------
duke@435	110	// Simple float constants
duke@435	111	class ConFNode : public ConNode {
duke@435	112	public:
duke@435	113	ConFNode( const TypeF *t ) : ConNode(t) {}
duke@435	114	virtual int Opcode() const;
duke@435	115
duke@435	116	// Factory method:
duke@435	117	static ConFNode* make( Compile *C, float con ) {
duke@435	118	return new (C, 1) ConFNode( TypeF::make(con) );
duke@435	119	}
duke@435	120
duke@435	121	};
duke@435	122
duke@435	123	//------------------------------ConDNode---------------------------------------
duke@435	124	// Simple double constants
duke@435	125	class ConDNode : public ConNode {
duke@435	126	public:
duke@435	127	ConDNode( const TypeD *t ) : ConNode(t) {}
duke@435	128	virtual int Opcode() const;
duke@435	129
duke@435	130	// Factory method:
duke@435	131	static ConDNode* make( Compile *C, double con ) {
duke@435	132	return new (C, 1) ConDNode( TypeD::make(con) );
duke@435	133	}
duke@435	134
duke@435	135	};
duke@435	136
duke@435	137	//------------------------------BinaryNode-------------------------------------
duke@435	138	// Place holder for the 2 conditional inputs to a CMove. CMove needs 4
duke@435	139	// inputs: the Bool (for the lt/gt/eq/ne bits), the flags (result of some
duke@435	140	// compare), and the 2 values to select between. The Matcher requires a
duke@435	141	// binary tree so we break it down like this:
duke@435	142	// (CMove (Binary bol cmp) (Binary src1 src2))
duke@435	143	class BinaryNode : public Node {
duke@435	144	public:
duke@435	145	BinaryNode( Node *n1, Node *n2 ) : Node(0,n1,n2) { }
duke@435	146	virtual int Opcode() const;
duke@435	147	virtual uint ideal_reg() const { return 0; }
duke@435	148	};
duke@435	149
duke@435	150	//------------------------------CMoveNode--------------------------------------
duke@435	151	// Conditional move
duke@435	152	class CMoveNode : public TypeNode {
duke@435	153	public:
duke@435	154	enum { Control, // When is it safe to do this cmove?
duke@435	155	Condition, // Condition controlling the cmove
duke@435	156	IfFalse, // Value if condition is false
duke@435	157	IfTrue }; // Value if condition is true
duke@435	158	CMoveNode( Node *bol, Node *left, Node *right, const Type *t ) : TypeNode(t,4)
duke@435	159	{
duke@435	160	init_class_id(Class_CMove);
duke@435	161	// all inputs are nullified in Node::Node(int)
duke@435	162	// init_req(Control,NULL);
duke@435	163	init_req(Condition,bol);
duke@435	164	init_req(IfFalse,left);
duke@435	165	init_req(IfTrue,right);
duke@435	166	}
duke@435	167	virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435	168	virtual const Type *Value( PhaseTransform *phase ) const;
duke@435	169	virtual Node *Identity( PhaseTransform *phase );
duke@435	170	static CMoveNode *make( Compile *C, Node *c, Node *bol, Node *left, Node *right, const Type *t );
duke@435	171	// Helper function to spot cmove graph shapes
duke@435	172	static Node *is_cmove_id( PhaseTransform *phase, Node *cmp, Node *t, Node *f, BoolNode *b );
duke@435	173	};
duke@435	174
duke@435	175	//------------------------------CMoveDNode-------------------------------------
duke@435	176	class CMoveDNode : public CMoveNode {
duke@435	177	public:
duke@435	178	CMoveDNode( Node *bol, Node *left, Node *right, const Type* t) : CMoveNode(bol,left,right,t){}
duke@435	179	virtual int Opcode() const;
duke@435	180	virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435	181	};
duke@435	182
duke@435	183	//------------------------------CMoveFNode-------------------------------------
duke@435	184	class CMoveFNode : public CMoveNode {
duke@435	185	public:
duke@435	186	CMoveFNode( Node *bol, Node *left, Node *right, const Type* t ) : CMoveNode(bol,left,right,t) {}
duke@435	187	virtual int Opcode() const;
duke@435	188	virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435	189	};
duke@435	190
duke@435	191	//------------------------------CMoveINode-------------------------------------
duke@435	192	class CMoveINode : public CMoveNode {
duke@435	193	public:
duke@435	194	CMoveINode( Node *bol, Node *left, Node *right, const TypeInt *ti ) : CMoveNode(bol,left,right,ti){}
duke@435	195	virtual int Opcode() const;
duke@435	196	virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435	197	};
duke@435	198
duke@435	199	//------------------------------CMoveLNode-------------------------------------
duke@435	200	class CMoveLNode : public CMoveNode {
duke@435	201	public:
duke@435	202	CMoveLNode(Node *bol, Node *left, Node *right, const TypeLong *tl ) : CMoveNode(bol,left,right,tl){}
duke@435	203	virtual int Opcode() const;
duke@435	204	};
duke@435	205
duke@435	206	//------------------------------CMovePNode-------------------------------------
duke@435	207	class CMovePNode : public CMoveNode {
duke@435	208	public:
duke@435	209	CMovePNode( Node *c, Node *bol, Node *left, Node *right, const TypePtr* t ) : CMoveNode(bol,left,right,t) { init_req(Control,c); }
duke@435	210	virtual int Opcode() const;
duke@435	211	};
duke@435	212
duke@435	213	//------------------------------ConstraintCastNode-------------------------------------
duke@435	214	// cast to a different range
duke@435	215	class ConstraintCastNode: public TypeNode {
duke@435	216	public:
duke@435	217	ConstraintCastNode (Node *n, const Type *t ): TypeNode(t,2) {
duke@435	218	init_class_id(Class_ConstraintCast);
duke@435	219	init_req(1, n);
duke@435	220	}
duke@435	221	virtual Node *Identity( PhaseTransform *phase );
duke@435	222	virtual const Type *Value( PhaseTransform *phase ) const;
duke@435	223	virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435	224	virtual int Opcode() const;
duke@435	225	virtual uint ideal_reg() const = 0;
duke@435	226	virtual Node *Ideal_DU_postCCP( PhaseCCP * );
duke@435	227	};
duke@435	228
duke@435	229	//------------------------------CastIINode-------------------------------------
duke@435	230	// cast integer to integer (different range)
duke@435	231	class CastIINode: public ConstraintCastNode {
duke@435	232	public:
duke@435	233	CastIINode (Node *n, const Type *t ): ConstraintCastNode(n,t) {}
duke@435	234	virtual int Opcode() const;
duke@435	235	virtual uint ideal_reg() const { return Op_RegI; }
duke@435	236	};
duke@435	237
duke@435	238	//------------------------------CastPPNode-------------------------------------
duke@435	239	// cast pointer to pointer (different type)
duke@435	240	class CastPPNode: public ConstraintCastNode {
duke@435	241	public:
kvn@561	242	CastPPNode (Node *n, const Type *t ): ConstraintCastNode(n, t) {}
duke@435	243	virtual int Opcode() const;
duke@435	244	virtual uint ideal_reg() const { return Op_RegP; }
duke@435	245	virtual Node *Ideal_DU_postCCP( PhaseCCP * );
duke@435	246	};
duke@435	247
duke@435	248	//------------------------------CheckCastPPNode--------------------------------
duke@435	249	// for _checkcast, cast pointer to pointer (different type), without JOIN,
duke@435	250	class CheckCastPPNode: public TypeNode {
duke@435	251	public:
duke@435	252	CheckCastPPNode( Node *c, Node *n, const Type *t ) : TypeNode(t,2) {
duke@435	253	init_class_id(Class_CheckCastPP);
duke@435	254	init_req(0, c);
duke@435	255	init_req(1, n);
duke@435	256	}
kvn@561	257
duke@435	258	virtual Node *Identity( PhaseTransform *phase );
duke@435	259	virtual const Type *Value( PhaseTransform *phase ) const;
duke@435	260	virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435	261	virtual int Opcode() const;
duke@435	262	virtual uint ideal_reg() const { return Op_RegP; }
duke@435	263	// No longer remove CheckCast after CCP as it gives me a place to hang
duke@435	264	// the proper address type - which is required to compute anti-deps.
duke@435	265	//virtual Node *Ideal_DU_postCCP( PhaseCCP * );
duke@435	266	};
duke@435	267
coleenp@548	268
coleenp@548	269	//------------------------------EncodeP--------------------------------
coleenp@548	270	// Encodes an oop pointers into its compressed form
coleenp@548	271	// Takes an extra argument which is the real heap base as a long which
coleenp@548	272	// may be useful for code generation in the backend.
coleenp@548	273	class EncodePNode : public TypeNode {
coleenp@548	274	public:
coleenp@548	275	EncodePNode(Node* value, const Type* type):
coleenp@548	276	TypeNode(type, 2) {
coleenp@548	277	init_req(0, NULL);
coleenp@548	278	init_req(1, value);
coleenp@548	279	}
coleenp@548	280	virtual int Opcode() const;
coleenp@548	281	virtual Node *Identity( PhaseTransform *phase );
kvn@559	282	virtual const Type *Value( PhaseTransform *phase ) const;
coleenp@548	283	virtual uint ideal_reg() const { return Op_RegN; }
coleenp@548	284
coleenp@548	285	static Node* encode(PhaseGVN* phase, Node* value);
coleenp@548	286	};
coleenp@548	287
coleenp@548	288	//------------------------------DecodeN--------------------------------
coleenp@548	289	// Converts a narrow oop into a real oop ptr.
coleenp@548	290	// Takes an extra argument which is the real heap base as a long which
coleenp@548	291	// may be useful for code generation in the backend.
coleenp@548	292	class DecodeNNode : public TypeNode {
coleenp@548	293	public:
coleenp@548	294	DecodeNNode(Node* value, const Type* type):
coleenp@548	295	TypeNode(type, 2) {
coleenp@548	296	init_req(0, NULL);
coleenp@548	297	init_req(1, value);
coleenp@548	298	}
coleenp@548	299	virtual int Opcode() const;
coleenp@548	300	virtual Node *Identity( PhaseTransform *phase );
kvn@559	301	virtual const Type *Value( PhaseTransform *phase ) const;
coleenp@548	302	virtual uint ideal_reg() const { return Op_RegP; }
kvn@559	303
kvn@559	304	static Node* decode(PhaseGVN* phase, Node* value);
coleenp@548	305	};
coleenp@548	306
duke@435	307	//------------------------------Conv2BNode-------------------------------------
duke@435	308	// Convert int/pointer to a Boolean. Map zero to zero, all else to 1.
duke@435	309	class Conv2BNode : public Node {
duke@435	310	public:
duke@435	311	Conv2BNode( Node *i ) : Node(0,i) {}
duke@435	312	virtual int Opcode() const;
duke@435	313	virtual const Type *bottom_type() const { return TypeInt::BOOL; }
duke@435	314	virtual Node *Identity( PhaseTransform *phase );
duke@435	315	virtual const Type *Value( PhaseTransform *phase ) const;
duke@435	316	virtual uint ideal_reg() const { return Op_RegI; }
duke@435	317	};
duke@435	318
duke@435	319	// The conversions operations are all Alpha sorted. Please keep it that way!
duke@435	320	//------------------------------ConvD2FNode------------------------------------
duke@435	321	// Convert double to float
duke@435	322	class ConvD2FNode : public Node {
duke@435	323	public:
duke@435	324	ConvD2FNode( Node *in1 ) : Node(0,in1) {}
duke@435	325	virtual int Opcode() const;
duke@435	326	virtual const Type *bottom_type() const { return Type::FLOAT; }
duke@435	327	virtual const Type *Value( PhaseTransform *phase ) const;
duke@435	328	virtual Node *Identity( PhaseTransform *phase );
duke@435	329	virtual uint ideal_reg() const { return Op_RegF; }
duke@435	330	};
duke@435	331
duke@435	332	//------------------------------ConvD2INode------------------------------------
duke@435	333	// Convert Double to Integer
duke@435	334	class ConvD2INode : public Node {
duke@435	335	public:
duke@435	336	ConvD2INode( Node *in1 ) : Node(0,in1) {}
duke@435	337	virtual int Opcode() const;
duke@435	338	virtual const Type *bottom_type() const { return TypeInt::INT; }
duke@435	339	virtual const Type *Value( PhaseTransform *phase ) const;
duke@435	340	virtual Node *Identity( PhaseTransform *phase );
duke@435	341	virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435	342	virtual uint ideal_reg() const { return Op_RegI; }
duke@435	343	};
duke@435	344
duke@435	345	//------------------------------ConvD2LNode------------------------------------
duke@435	346	// Convert Double to Long
duke@435	347	class ConvD2LNode : public Node {
duke@435	348	public:
duke@435	349	ConvD2LNode( Node *dbl ) : Node(0,dbl) {}
duke@435	350	virtual int Opcode() const;
duke@435	351	virtual const Type *bottom_type() const { return TypeLong::LONG; }
duke@435	352	virtual const Type *Value( PhaseTransform *phase ) const;
duke@435	353	virtual Node *Identity( PhaseTransform *phase );
duke@435	354	virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435	355	virtual uint ideal_reg() const { return Op_RegL; }
duke@435	356	};
duke@435	357
duke@435	358	//------------------------------ConvF2DNode------------------------------------
duke@435	359	// Convert Float to a Double.
duke@435	360	class ConvF2DNode : public Node {
duke@435	361	public:
duke@435	362	ConvF2DNode( Node *in1 ) : Node(0,in1) {}
duke@435	363	virtual int Opcode() const;
duke@435	364	virtual const Type *bottom_type() const { return Type::DOUBLE; }
duke@435	365	virtual const Type *Value( PhaseTransform *phase ) const;
duke@435	366	virtual uint ideal_reg() const { return Op_RegD; }
duke@435	367	};
duke@435	368
duke@435	369	//------------------------------ConvF2INode------------------------------------
duke@435	370	// Convert float to integer
duke@435	371	class ConvF2INode : public Node {
duke@435	372	public:
duke@435	373	ConvF2INode( Node *in1 ) : Node(0,in1) {}
duke@435	374	virtual int Opcode() const;
duke@435	375	virtual const Type *bottom_type() const { return TypeInt::INT; }
duke@435	376	virtual const Type *Value( PhaseTransform *phase ) const;
duke@435	377	virtual Node *Identity( PhaseTransform *phase );
duke@435	378	virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435	379	virtual uint ideal_reg() const { return Op_RegI; }
duke@435	380	};
duke@435	381
duke@435	382	//------------------------------ConvF2LNode------------------------------------
duke@435	383	// Convert float to long
duke@435	384	class ConvF2LNode : public Node {
duke@435	385	public:
duke@435	386	ConvF2LNode( Node *in1 ) : Node(0,in1) {}
duke@435	387	virtual int Opcode() const;
duke@435	388	virtual const Type *bottom_type() const { return TypeLong::LONG; }
duke@435	389	virtual const Type *Value( PhaseTransform *phase ) const;
duke@435	390	virtual Node *Identity( PhaseTransform *phase );
duke@435	391	virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435	392	virtual uint ideal_reg() const { return Op_RegL; }
duke@435	393	};
duke@435	394
duke@435	395	//------------------------------ConvI2DNode------------------------------------
duke@435	396	// Convert Integer to Double
duke@435	397	class ConvI2DNode : public Node {
duke@435	398	public:
duke@435	399	ConvI2DNode( Node *in1 ) : Node(0,in1) {}
duke@435	400	virtual int Opcode() const;
duke@435	401	virtual const Type *bottom_type() const { return Type::DOUBLE; }
duke@435	402	virtual const Type *Value( PhaseTransform *phase ) const;
duke@435	403	virtual uint ideal_reg() const { return Op_RegD; }
duke@435	404	};
duke@435	405
duke@435	406	//------------------------------ConvI2FNode------------------------------------
duke@435	407	// Convert Integer to Float
duke@435	408	class ConvI2FNode : public Node {
duke@435	409	public:
duke@435	410	ConvI2FNode( Node *in1 ) : Node(0,in1) {}
duke@435	411	virtual int Opcode() const;
duke@435	412	virtual const Type *bottom_type() const { return Type::FLOAT; }
duke@435	413	virtual const Type *Value( PhaseTransform *phase ) const;
duke@435	414	virtual Node *Identity( PhaseTransform *phase );
duke@435	415	virtual uint ideal_reg() const { return Op_RegF; }
duke@435	416	};
duke@435	417
duke@435	418	//------------------------------ConvI2LNode------------------------------------
duke@435	419	// Convert integer to long
duke@435	420	class ConvI2LNode : public TypeNode {
duke@435	421	public:
duke@435	422	ConvI2LNode(Node *in1, const TypeLong* t = TypeLong::INT)
duke@435	423	: TypeNode(t, 2)
duke@435	424	{ init_req(1, in1); }
duke@435	425	virtual int Opcode() const;
duke@435	426	virtual const Type *Value( PhaseTransform *phase ) const;
duke@435	427	virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435	428	virtual uint ideal_reg() const { return Op_RegL; }
duke@435	429	};
duke@435	430
duke@435	431	//------------------------------ConvL2DNode------------------------------------
duke@435	432	// Convert Long to Double
duke@435	433	class ConvL2DNode : public Node {
duke@435	434	public:
duke@435	435	ConvL2DNode( Node *in1 ) : Node(0,in1) {}
duke@435	436	virtual int Opcode() const;
duke@435	437	virtual const Type *bottom_type() const { return Type::DOUBLE; }
duke@435	438	virtual const Type *Value( PhaseTransform *phase ) const;
duke@435	439	virtual uint ideal_reg() const { return Op_RegD; }
duke@435	440	};
duke@435	441
duke@435	442	//------------------------------ConvL2FNode------------------------------------
duke@435	443	// Convert Long to Float
duke@435	444	class ConvL2FNode : public Node {
duke@435	445	public:
duke@435	446	ConvL2FNode( Node *in1 ) : Node(0,in1) {}
duke@435	447	virtual int Opcode() const;
duke@435	448	virtual const Type *bottom_type() const { return Type::FLOAT; }
duke@435	449	virtual const Type *Value( PhaseTransform *phase ) const;
duke@435	450	virtual uint ideal_reg() const { return Op_RegF; }
duke@435	451	};
duke@435	452
duke@435	453	//------------------------------ConvL2INode------------------------------------
duke@435	454	// Convert long to integer
duke@435	455	class ConvL2INode : public Node {
duke@435	456	public:
duke@435	457	ConvL2INode( Node *in1 ) : Node(0,in1) {}
duke@435	458	virtual int Opcode() const;
duke@435	459	virtual const Type *bottom_type() const { return TypeInt::INT; }
duke@435	460	virtual Node *Identity( PhaseTransform *phase );
duke@435	461	virtual const Type *Value( PhaseTransform *phase ) const;
duke@435	462	virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435	463	virtual uint ideal_reg() const { return Op_RegI; }
duke@435	464	};
duke@435	465
duke@435	466	//------------------------------CastX2PNode-------------------------------------
duke@435	467	// convert a machine-pointer-sized integer to a raw pointer
duke@435	468	class CastX2PNode : public Node {
duke@435	469	public:
duke@435	470	CastX2PNode( Node *n ) : Node(NULL, n) {}
duke@435	471	virtual int Opcode() const;
duke@435	472	virtual const Type *Value( PhaseTransform *phase ) const;
duke@435	473	virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435	474	virtual Node *Identity( PhaseTransform *phase );
duke@435	475	virtual uint ideal_reg() const { return Op_RegP; }
duke@435	476	virtual const Type *bottom_type() const { return TypeRawPtr::BOTTOM; }
duke@435	477	};
duke@435	478
duke@435	479	//------------------------------CastP2XNode-------------------------------------
duke@435	480	// Used in both 32-bit and 64-bit land.
duke@435	481	// Used for card-marks and unsafe pointer math.
duke@435	482	class CastP2XNode : public Node {
duke@435	483	public:
duke@435	484	CastP2XNode( Node *ctrl, Node *n ) : Node(ctrl, n) {}
duke@435	485	virtual int Opcode() const;
duke@435	486	virtual const Type *Value( PhaseTransform *phase ) const;
duke@435	487	virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
duke@435	488	virtual Node *Identity( PhaseTransform *phase );
duke@435	489	virtual uint ideal_reg() const { return Op_RegX; }
duke@435	490	virtual const Type *bottom_type() const { return TypeX_X; }
duke@435	491	// Return false to keep node from moving away from an associated card mark.
duke@435	492	virtual bool depends_only_on_test() const { return false; }
duke@435	493	};
duke@435	494
duke@435	495	//------------------------------MemMoveNode------------------------------------
duke@435	496	// Memory to memory move. Inserted very late, after allocation.
duke@435	497	class MemMoveNode : public Node {
duke@435	498	public:
duke@435	499	MemMoveNode( Node *dst, Node *src ) : Node(0,dst,src) {}
duke@435	500	virtual int Opcode() const;
duke@435	501	};
duke@435	502
duke@435	503	//------------------------------ThreadLocalNode--------------------------------
duke@435	504	// Ideal Node which returns the base of ThreadLocalStorage.
duke@435	505	class ThreadLocalNode : public Node {
duke@435	506	public:
duke@435	507	ThreadLocalNode( ) : Node((Node*)Compile::current()->root()) {}
duke@435	508	virtual int Opcode() const;
duke@435	509	virtual const Type *bottom_type() const { return TypeRawPtr::BOTTOM;}
duke@435	510	virtual uint ideal_reg() const { return Op_RegP; }
duke@435	511	};
duke@435	512
duke@435	513	//------------------------------LoadReturnPCNode-------------------------------
duke@435	514	class LoadReturnPCNode: public Node {
duke@435	515	public:
duke@435	516	LoadReturnPCNode(Node *c) : Node(c) { }
duke@435	517	virtual int Opcode() const;
duke@435	518	virtual uint ideal_reg() const { return Op_RegP; }
duke@435	519	};
duke@435	520
duke@435	521
duke@435	522	//-----------------------------RoundFloatNode----------------------------------
duke@435	523	class RoundFloatNode: public Node {
duke@435	524	public:
duke@435	525	RoundFloatNode(Node* c, Node *in1): Node(c, in1) {}
duke@435	526	virtual int Opcode() const;
duke@435	527	virtual const Type *bottom_type() const { return Type::FLOAT; }
duke@435	528	virtual uint ideal_reg() const { return Op_RegF; }
duke@435	529	virtual Node *Identity( PhaseTransform *phase );
duke@435	530	virtual const Type *Value( PhaseTransform *phase ) const;
duke@435	531	};
duke@435	532
duke@435	533
duke@435	534	//-----------------------------RoundDoubleNode---------------------------------
duke@435	535	class RoundDoubleNode: public Node {
duke@435	536	public:
duke@435	537	RoundDoubleNode(Node* c, Node *in1): Node(c, in1) {}
duke@435	538	virtual int Opcode() const;
duke@435	539	virtual const Type *bottom_type() const { return Type::DOUBLE; }
duke@435	540	virtual uint ideal_reg() const { return Op_RegD; }
duke@435	541	virtual Node *Identity( PhaseTransform *phase );
duke@435	542	virtual const Type *Value( PhaseTransform *phase ) const;
duke@435	543	};
duke@435	544
duke@435	545	//------------------------------Opaque1Node------------------------------------
duke@435	546	// A node to prevent unwanted optimizations. Allows constant folding.
duke@435	547	// Stops value-numbering, Ideal calls or Identity functions.
duke@435	548	class Opaque1Node : public Node {
duke@435	549	virtual uint hash() const ; // { return NO_HASH; }
duke@435	550	virtual uint cmp( const Node &n ) const;
duke@435	551	public:
duke@435	552	Opaque1Node( Node *n ) : Node(0,n) {}
duke@435	553	// Special version for the pre-loop to hold the original loop limit
duke@435	554	// which is consumed by range check elimination.
duke@435	555	Opaque1Node( Node *n, Node* orig_limit ) : Node(0,n,orig_limit) {}
duke@435	556	Node* original_loop_limit() { return req()==3 ? in(2) : NULL; }
duke@435	557	virtual int Opcode() const;
duke@435	558	virtual const Type *bottom_type() const { return TypeInt::INT; }
duke@435	559	virtual Node *Identity( PhaseTransform *phase );
duke@435	560	};
duke@435	561
duke@435	562	//------------------------------Opaque2Node------------------------------------
duke@435	563	// A node to prevent unwanted optimizations. Allows constant folding. Stops
duke@435	564	// value-numbering, most Ideal calls or Identity functions. This Node is
duke@435	565	// specifically designed to prevent the pre-increment value of a loop trip
duke@435	566	// counter from being live out of the bottom of the loop (hence causing the
duke@435	567	// pre- and post-increment values both being live and thus requiring an extra
duke@435	568	// temp register and an extra move). If we "accidentally" optimize through
duke@435	569	// this kind of a Node, we'll get slightly pessimal, but correct, code. Thus
duke@435	570	// it's OK to be slightly sloppy on optimizations here.
duke@435	571	class Opaque2Node : public Node {
duke@435	572	virtual uint hash() const ; // { return NO_HASH; }
duke@435	573	virtual uint cmp( const Node &n ) const;
duke@435	574	public:
duke@435	575	Opaque2Node( Node *n ) : Node(0,n) {}
duke@435	576	virtual int Opcode() const;
duke@435	577	virtual const Type *bottom_type() const { return TypeInt::INT; }
duke@435	578	};
duke@435	579
duke@435	580	//----------------------PartialSubtypeCheckNode--------------------------------
duke@435	581	// The 2nd slow-half of a subtype check. Scan the subklass's 2ndary superklass
duke@435	582	// array for an instance of the superklass. Set a hidden internal cache on a
duke@435	583	// hit (cache is checked with exposed code in gen_subtype_check()). Return
duke@435	584	// not zero for a miss or zero for a hit.
duke@435	585	class PartialSubtypeCheckNode : public Node {
duke@435	586	public:
duke@435	587	PartialSubtypeCheckNode(Node* c, Node* sub, Node* super) : Node(c,sub,super) {}
duke@435	588	virtual int Opcode() const;
duke@435	589	virtual const Type *bottom_type() const { return TypeRawPtr::BOTTOM; }
duke@435	590	virtual uint ideal_reg() const { return Op_RegP; }
duke@435	591	};
duke@435	592
duke@435	593	//
duke@435	594	class MoveI2FNode : public Node {
duke@435	595	public:
duke@435	596	MoveI2FNode( Node *value ) : Node(0,value) {}
duke@435	597	virtual int Opcode() const;
duke@435	598	virtual const Type *bottom_type() const { return Type::FLOAT; }
duke@435	599	virtual uint ideal_reg() const { return Op_RegF; }
duke@435	600	virtual const Type* Value( PhaseTransform *phase ) const;
duke@435	601	};
duke@435	602
duke@435	603	class MoveL2DNode : public Node {
duke@435	604	public:
duke@435	605	MoveL2DNode( Node *value ) : Node(0,value) {}
duke@435	606	virtual int Opcode() const;
duke@435	607	virtual const Type *bottom_type() const { return Type::DOUBLE; }
duke@435	608	virtual uint ideal_reg() const { return Op_RegD; }
duke@435	609	virtual const Type* Value( PhaseTransform *phase ) const;
duke@435	610	};
duke@435	611
duke@435	612	class MoveF2INode : public Node {
duke@435	613	public:
duke@435	614	MoveF2INode( Node *value ) : Node(0,value) {}
duke@435	615	virtual int Opcode() const;
duke@435	616	virtual const Type *bottom_type() const { return TypeInt::INT; }
duke@435	617	virtual uint ideal_reg() const { return Op_RegI; }
duke@435	618	virtual const Type* Value( PhaseTransform *phase ) const;
duke@435	619	};
duke@435	620
duke@435	621	class MoveD2LNode : public Node {
duke@435	622	public:
duke@435	623	MoveD2LNode( Node *value ) : Node(0,value) {}
duke@435	624	virtual int Opcode() const;
duke@435	625	virtual const Type *bottom_type() const { return TypeLong::LONG; }
duke@435	626	virtual uint ideal_reg() const { return Op_RegL; }
duke@435	627	virtual const Type* Value( PhaseTransform *phase ) const;
duke@435	628	};