1 /* 2 * Copyright (c) 1999, 2005, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 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 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 # include "incls/_precompiled.incl" 26 # include "incls/_c1_ValueType.cpp.incl" 27 28 29 // predefined types 30 VoidType* voidType = NULL; 31 IntType* intType = NULL; 32 LongType* longType = NULL; 33 FloatType* floatType = NULL; 34 DoubleType* doubleType = NULL; 35 ObjectType* objectType = NULL; 36 ArrayType* arrayType = NULL; 37 InstanceType* instanceType = NULL; 38 ClassType* classType = NULL; 39 AddressType* addressType = NULL; 40 IllegalType* illegalType = NULL; 41 42 43 // predefined constants 44 IntConstant* intZero = NULL; 45 IntConstant* intOne = NULL; 46 ObjectConstant* objectNull = NULL; 47 48 49 void ValueType::initialize(Arena* arena) { 50 // Note: Must initialize all types for each compilation 51 // as they are allocated within a ResourceMark! 52 53 // types 54 voidType = new (arena) VoidType(); 55 intType = new (arena) IntType(); 56 longType = new (arena) LongType(); 57 floatType = new (arena) FloatType(); 58 doubleType = new (arena) DoubleType(); 59 objectType = new (arena) ObjectType(); 60 arrayType = new (arena) ArrayType(); 61 instanceType = new (arena) InstanceType(); 62 classType = new (arena) ClassType(); 63 addressType = new (arena) AddressType(); 64 illegalType = new (arena) IllegalType(); 65 66 intZero = new (arena) IntConstant(0); 67 intOne = new (arena) IntConstant(1); 68 objectNull = new (arena) ObjectConstant(ciNullObject::make()); 69 }; 70 71 72 ValueType* ValueType::meet(ValueType* y) const { 73 // incomplete & conservative solution for now - fix this! 74 assert(tag() == y->tag(), "types must match"); 75 return base(); 76 } 77 78 79 ValueType* ValueType::join(ValueType* y) const { 80 Unimplemented(); 81 return NULL; 82 } 83 84 85 86 jobject ObjectType::encoding() const { 87 assert(is_constant(), "must be"); 88 return constant_value()->constant_encoding(); 89 } 90 91 bool ObjectType::is_loaded() const { 92 assert(is_constant(), "must be"); 93 return constant_value()->is_loaded(); 94 } 95 96 ciObject* ObjectConstant::constant_value() const { return _value; } 97 ciObject* ArrayConstant::constant_value() const { return _value; } 98 ciObject* InstanceConstant::constant_value() const { return _value; } 99 ciObject* ClassConstant::constant_value() const { return _value; } 100 101 102 ValueType* as_ValueType(BasicType type) { 103 switch (type) { 104 case T_VOID : return voidType; 105 case T_BYTE : // fall through 106 case T_CHAR : // fall through 107 case T_SHORT : // fall through 108 case T_BOOLEAN: // fall through 109 case T_INT : return intType; 110 case T_LONG : return longType; 111 case T_FLOAT : return floatType; 112 case T_DOUBLE : return doubleType; 113 case T_ARRAY : return arrayType; 114 case T_OBJECT : return objectType; 115 case T_ADDRESS: return addressType; 116 case T_ILLEGAL: return illegalType; 117 } 118 ShouldNotReachHere(); 119 return illegalType; 120 } 121 122 123 ValueType* as_ValueType(ciConstant value) { 124 switch (value.basic_type()) { 125 case T_BYTE : // fall through 126 case T_CHAR : // fall through 127 case T_SHORT : // fall through 128 case T_BOOLEAN: // fall through 129 case T_INT : return new IntConstant (value.as_int ()); 130 case T_LONG : return new LongConstant (value.as_long ()); 131 case T_FLOAT : return new FloatConstant (value.as_float ()); 132 case T_DOUBLE : return new DoubleConstant(value.as_double()); 133 case T_ARRAY : // fall through (ciConstant doesn't have an array accessor) 134 case T_OBJECT : return new ObjectConstant(value.as_object()); 135 } 136 ShouldNotReachHere(); 137 return illegalType; 138 } 139 140 141 BasicType as_BasicType(ValueType* type) { 142 switch (type->tag()) { 143 case voidTag: return T_VOID; 144 case intTag: return T_INT; 145 case longTag: return T_LONG; 146 case floatTag: return T_FLOAT; 147 case doubleTag: return T_DOUBLE; 148 case objectTag: return T_OBJECT; 149 case addressTag: return T_ADDRESS; 150 case illegalTag: return T_ILLEGAL; 151 } 152 ShouldNotReachHere(); 153 return T_ILLEGAL; 154 }