1 /* 2 * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved. 3 * Copyright 2008, 2009 Red Hat, Inc. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #include "incls/_precompiled.incl" 27 #include "incls/_sharkValue.cpp.incl" 28 29 using namespace llvm; 30 31 // Cloning 32 33 SharkValue* SharkNormalValue::clone() const { 34 return SharkValue::create_generic(type(), generic_value(), zero_checked()); 35 } 36 SharkValue* SharkPHIValue::clone() const { 37 return SharkValue::create_phi(type(), (PHINode *) generic_value(), this); 38 } 39 SharkValue* SharkAddressValue::clone() const { 40 return SharkValue::address_constant(address_value()); 41 } 42 43 // Casting 44 45 bool SharkValue::is_phi() const { 46 return false; 47 } 48 bool SharkPHIValue::is_phi() const { 49 return true; 50 } 51 SharkPHIValue* SharkValue::as_phi() { 52 ShouldNotCallThis(); 53 } 54 SharkPHIValue* SharkPHIValue::as_phi() { 55 return this; 56 } 57 58 // Comparison 59 60 bool SharkNormalValue::equal_to(SharkValue *other) const { 61 return (this->type() == other->type() && 62 this->generic_value() == other->generic_value() && 63 this->zero_checked() == other->zero_checked()); 64 } 65 bool SharkAddressValue::equal_to(SharkValue *other) const { 66 return (this->address_value() == other->address_value()); 67 } 68 69 // Type access 70 71 ciType* SharkValue::type() const { 72 ShouldNotCallThis(); 73 } 74 ciType* SharkNormalValue::type() const { 75 return _type; 76 } 77 78 BasicType SharkNormalValue::basic_type() const { 79 return type()->basic_type(); 80 } 81 BasicType SharkAddressValue::basic_type() const { 82 return T_ADDRESS; 83 } 84 85 int SharkNormalValue::size() const { 86 return type()->size(); 87 } 88 int SharkAddressValue::size() const { 89 return 1; 90 } 91 92 bool SharkValue::is_jint() const { 93 return false; 94 } 95 bool SharkValue::is_jlong() const { 96 return false; 97 } 98 bool SharkValue::is_jfloat() const { 99 return false; 100 } 101 bool SharkValue::is_jdouble() const { 102 return false; 103 } 104 bool SharkValue::is_jobject() const { 105 return false; 106 } 107 bool SharkValue::is_jarray() const { 108 return false; 109 } 110 bool SharkValue::is_address() const { 111 return false; 112 } 113 114 bool SharkNormalValue::is_jint() const { 115 return llvm_value()->getType() == SharkType::jint_type(); 116 } 117 bool SharkNormalValue::is_jlong() const { 118 return llvm_value()->getType() == SharkType::jlong_type(); 119 } 120 bool SharkNormalValue::is_jfloat() const { 121 return llvm_value()->getType() == SharkType::jfloat_type(); 122 } 123 bool SharkNormalValue::is_jdouble() const { 124 return llvm_value()->getType() == SharkType::jdouble_type(); 125 } 126 bool SharkNormalValue::is_jobject() const { 127 return llvm_value()->getType() == SharkType::oop_type(); 128 } 129 bool SharkNormalValue::is_jarray() const { 130 return basic_type() == T_ARRAY; 131 } 132 bool SharkAddressValue::is_address() const { 133 return true; 134 } 135 136 // Typed conversions from SharkValues 137 138 Value* SharkValue::jint_value() const { 139 ShouldNotCallThis(); 140 } 141 Value* SharkValue::jlong_value() const { 142 ShouldNotCallThis(); 143 } 144 Value* SharkValue::jfloat_value() const { 145 ShouldNotCallThis(); 146 } 147 Value* SharkValue::jdouble_value() const { 148 ShouldNotCallThis(); 149 } 150 Value* SharkValue::jobject_value() const { 151 ShouldNotCallThis(); 152 } 153 Value* SharkValue::jarray_value() const { 154 ShouldNotCallThis(); 155 } 156 int SharkValue::address_value() const { 157 ShouldNotCallThis(); 158 } 159 160 Value* SharkNormalValue::jint_value() const { 161 assert(is_jint(), "should be"); 162 return llvm_value(); 163 } 164 Value* SharkNormalValue::jlong_value() const { 165 assert(is_jlong(), "should be"); 166 return llvm_value(); 167 } 168 Value* SharkNormalValue::jfloat_value() const { 169 assert(is_jfloat(), "should be"); 170 return llvm_value(); 171 } 172 Value* SharkNormalValue::jdouble_value() const { 173 assert(is_jdouble(), "should be"); 174 return llvm_value(); 175 } 176 Value* SharkNormalValue::jobject_value() const { 177 assert(is_jobject(), "should be"); 178 return llvm_value(); 179 } 180 Value* SharkNormalValue::jarray_value() const { 181 // XXX assert(is_jarray(), "should be"); 182 // XXX http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=324 183 assert(is_jobject(), "should be"); 184 return llvm_value(); 185 } 186 int SharkAddressValue::address_value() const { 187 return _bci; 188 } 189 190 // Type-losing conversions -- use with care! 191 192 Value* SharkNormalValue::generic_value() const { 193 return llvm_value(); 194 } 195 Value* SharkAddressValue::generic_value() const { 196 return LLVMValue::intptr_constant(address_value()); 197 } 198 199 Value* SharkValue::intptr_value(SharkBuilder* builder) const { 200 ShouldNotCallThis(); 201 } 202 Value* SharkNormalValue::intptr_value(SharkBuilder* builder) const { 203 return builder->CreatePtrToInt(jobject_value(), SharkType::intptr_type()); 204 } 205 206 // Phi-style stuff for SharkPHIState::add_incoming 207 208 void SharkValue::addIncoming(SharkValue *value, BasicBlock* block) { 209 ShouldNotCallThis(); 210 } 211 void SharkPHIValue::addIncoming(SharkValue *value, BasicBlock* block) { 212 assert(!is_clone(), "shouldn't be"); 213 ((llvm::PHINode *) generic_value())->addIncoming( 214 value->generic_value(), block); 215 if (!value->zero_checked()) 216 _all_incomers_zero_checked = false; 217 } 218 void SharkAddressValue::addIncoming(SharkValue *value, BasicBlock* block) { 219 assert(this->equal_to(value), "should be"); 220 } 221 222 // Phi-style stuff for SharkState::merge 223 224 SharkValue* SharkNormalValue::merge(SharkBuilder* builder, 225 SharkValue* other, 226 BasicBlock* other_block, 227 BasicBlock* this_block, 228 const char* name) { 229 assert(type() == other->type(), "should be"); 230 assert(zero_checked() == other->zero_checked(), "should be"); 231 232 PHINode *phi = builder->CreatePHI(SharkType::to_stackType(type()), name); 233 phi->addIncoming(this->generic_value(), this_block); 234 phi->addIncoming(other->generic_value(), other_block); 235 return SharkValue::create_generic(type(), phi, zero_checked()); 236 } 237 SharkValue* SharkAddressValue::merge(SharkBuilder* builder, 238 SharkValue* other, 239 BasicBlock* other_block, 240 BasicBlock* this_block, 241 const char* name) { 242 assert(this->equal_to(other), "should be"); 243 return this; 244 } 245 246 // Repeated null and divide-by-zero check removal 247 248 bool SharkValue::zero_checked() const { 249 ShouldNotCallThis(); 250 } 251 void SharkValue::set_zero_checked(bool zero_checked) { 252 ShouldNotCallThis(); 253 } 254 255 bool SharkNormalValue::zero_checked() const { 256 return _zero_checked; 257 } 258 void SharkNormalValue::set_zero_checked(bool zero_checked) { 259 _zero_checked = zero_checked; 260 }