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comparison src/share/vm/opto/memnode.hpp @ 624:337400e7a5dd

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6797305: Add LoadUB and LoadUI opcode class Summary: Add a LoadUB (unsigned byte) and LoadUI (unsigned int) opcode class so we have these load optimizations in the first place and do not need to handle them in the matcher. Reviewed-by: never, kvn
author twisti
date Mon, 09 Mar 2009 03:17:11 -0700
parents 98cb887364d3
children 7bb995fbd3c0
comparison
equal deleted inserted replaced
623:9adddb8c0fc8 624:337400e7a5dd
1 /* 1 /*
2 * Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved. 2 * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
205 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape); 205 virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
206 virtual int store_Opcode() const { return Op_StoreB; } 206 virtual int store_Opcode() const { return Op_StoreB; }
207 virtual BasicType memory_type() const { return T_BYTE; } 207 virtual BasicType memory_type() const { return T_BYTE; }
208 }; 208 };
209 209
210 //------------------------------LoadUBNode-------------------------------------
211 // Load a unsigned byte (8bits unsigned) from memory
212 class LoadUBNode : public LoadNode {
213 public:
214 LoadUBNode(Node* c, Node* mem, Node* adr, const TypePtr* at, const TypeInt* ti = TypeInt::UBYTE )
215 : LoadNode(c, mem, adr, at, ti) {}
216 virtual int Opcode() const;
217 virtual uint ideal_reg() const { return Op_RegI; }
218 virtual Node* Ideal(PhaseGVN *phase, bool can_reshape);
219 virtual int store_Opcode() const { return Op_StoreB; }
220 virtual BasicType memory_type() const { return T_BYTE; }
221 };
222
210 //------------------------------LoadUSNode------------------------------------- 223 //------------------------------LoadUSNode-------------------------------------
211 // Load an unsigned short/char (16bits unsigned) from memory 224 // Load an unsigned short/char (16bits unsigned) from memory
212 class LoadUSNode : public LoadNode { 225 class LoadUSNode : public LoadNode {
213 public: 226 public:
214 LoadUSNode( Node *c, Node *mem, Node *adr, const TypePtr* at, const TypeInt *ti = TypeInt::CHAR ) 227 LoadUSNode( Node *c, Node *mem, Node *adr, const TypePtr* at, const TypeInt *ti = TypeInt::CHAR )
228 : LoadNode(c,mem,adr,at,ti) {} 241 : LoadNode(c,mem,adr,at,ti) {}
229 virtual int Opcode() const; 242 virtual int Opcode() const;
230 virtual uint ideal_reg() const { return Op_RegI; } 243 virtual uint ideal_reg() const { return Op_RegI; }
231 virtual int store_Opcode() const { return Op_StoreI; } 244 virtual int store_Opcode() const { return Op_StoreI; }
232 virtual BasicType memory_type() const { return T_INT; } 245 virtual BasicType memory_type() const { return T_INT; }
246 };
247
248 //------------------------------LoadUI2LNode-----------------------------------
249 // Load an unsigned integer into long from memory
250 class LoadUI2LNode : public LoadNode {
251 public:
252 LoadUI2LNode(Node* c, Node* mem, Node* adr, const TypePtr* at, const TypeLong* t = TypeLong::UINT)
253 : LoadNode(c, mem, adr, at, t) {}
254 virtual int Opcode() const;
255 virtual uint ideal_reg() const { return Op_RegL; }
256 virtual int store_Opcode() const { return Op_StoreL; }
257 virtual BasicType memory_type() const { return T_LONG; }
233 }; 258 };
234 259
235 //------------------------------LoadRangeNode---------------------------------- 260 //------------------------------LoadRangeNode----------------------------------
236 // Load an array length from the array 261 // Load an array length from the array
237 class LoadRangeNode : public LoadINode { 262 class LoadRangeNode : public LoadINode {