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1692
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1 /*
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2 * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
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3 * Copyright 2008, 2009 Red Hat, Inc.
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 *
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6 * This code is free software; you can redistribute it and/or modify it
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7 * under the terms of the GNU General Public License version 2 only, as
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8 * published by the Free Software Foundation.
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9 *
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10 * This code is distributed in the hope that it will be useful, but WITHOUT
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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13 * version 2 for more details (a copy is included in the LICENSE file that
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14 * accompanied this code).
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15 *
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16 * You should have received a copy of the GNU General Public License version
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17 * 2 along with this work; if not, write to the Free Software Foundation,
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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19 *
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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21 * or visit www.oracle.com if you need additional information or have any
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22 * questions.
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23 *
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24 */
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25
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26 #include "incls/_precompiled.incl"
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27 #include "incls/_sharkValue.cpp.incl"
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28
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29 using namespace llvm;
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30
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31 // Cloning
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32
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33 SharkValue* SharkNormalValue::clone() const {
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34 return SharkValue::create_generic(type(), generic_value(), zero_checked());
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35 }
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36 SharkValue* SharkPHIValue::clone() const {
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37 return SharkValue::create_phi(type(), (PHINode *) generic_value(), this);
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38 }
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39 SharkValue* SharkAddressValue::clone() const {
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40 return SharkValue::address_constant(address_value());
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41 }
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42
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43 // Casting
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44
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45 bool SharkValue::is_phi() const {
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46 return false;
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47 }
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48 bool SharkPHIValue::is_phi() const {
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49 return true;
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50 }
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51 SharkPHIValue* SharkValue::as_phi() {
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52 ShouldNotCallThis();
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53 }
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54 SharkPHIValue* SharkPHIValue::as_phi() {
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55 return this;
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56 }
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57
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58 // Comparison
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59
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60 bool SharkNormalValue::equal_to(SharkValue *other) const {
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61 return (this->type() == other->type() &&
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62 this->generic_value() == other->generic_value() &&
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63 this->zero_checked() == other->zero_checked());
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64 }
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65 bool SharkAddressValue::equal_to(SharkValue *other) const {
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66 return (this->address_value() == other->address_value());
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67 }
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68
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69 // Type access
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70
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71 ciType* SharkValue::type() const {
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72 ShouldNotCallThis();
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73 }
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74 ciType* SharkNormalValue::type() const {
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75 return _type;
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76 }
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77
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78 BasicType SharkNormalValue::basic_type() const {
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79 return type()->basic_type();
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80 }
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81 BasicType SharkAddressValue::basic_type() const {
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82 return T_ADDRESS;
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83 }
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84
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85 int SharkNormalValue::size() const {
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86 return type()->size();
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87 }
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88 int SharkAddressValue::size() const {
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89 return 1;
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90 }
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91
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92 bool SharkValue::is_jint() const {
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93 return false;
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94 }
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95 bool SharkValue::is_jlong() const {
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96 return false;
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97 }
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98 bool SharkValue::is_jfloat() const {
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99 return false;
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100 }
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101 bool SharkValue::is_jdouble() const {
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102 return false;
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103 }
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104 bool SharkValue::is_jobject() const {
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105 return false;
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106 }
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107 bool SharkValue::is_jarray() const {
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108 return false;
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109 }
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110 bool SharkValue::is_address() const {
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111 return false;
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112 }
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113
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114 bool SharkNormalValue::is_jint() const {
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115 return llvm_value()->getType() == SharkType::jint_type();
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116 }
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117 bool SharkNormalValue::is_jlong() const {
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118 return llvm_value()->getType() == SharkType::jlong_type();
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119 }
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120 bool SharkNormalValue::is_jfloat() const {
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121 return llvm_value()->getType() == SharkType::jfloat_type();
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122 }
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123 bool SharkNormalValue::is_jdouble() const {
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124 return llvm_value()->getType() == SharkType::jdouble_type();
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125 }
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126 bool SharkNormalValue::is_jobject() const {
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127 return llvm_value()->getType() == SharkType::oop_type();
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128 }
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129 bool SharkNormalValue::is_jarray() const {
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130 return basic_type() == T_ARRAY;
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131 }
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132 bool SharkAddressValue::is_address() const {
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133 return true;
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134 }
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135
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136 // Typed conversions from SharkValues
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137
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138 Value* SharkValue::jint_value() const {
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139 ShouldNotCallThis();
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140 }
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141 Value* SharkValue::jlong_value() const {
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142 ShouldNotCallThis();
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143 }
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144 Value* SharkValue::jfloat_value() const {
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145 ShouldNotCallThis();
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146 }
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147 Value* SharkValue::jdouble_value() const {
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148 ShouldNotCallThis();
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149 }
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150 Value* SharkValue::jobject_value() const {
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151 ShouldNotCallThis();
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152 }
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153 Value* SharkValue::jarray_value() const {
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154 ShouldNotCallThis();
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155 }
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156 int SharkValue::address_value() const {
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157 ShouldNotCallThis();
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158 }
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159
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160 Value* SharkNormalValue::jint_value() const {
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161 assert(is_jint(), "should be");
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162 return llvm_value();
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163 }
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164 Value* SharkNormalValue::jlong_value() const {
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165 assert(is_jlong(), "should be");
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166 return llvm_value();
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167 }
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168 Value* SharkNormalValue::jfloat_value() const {
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169 assert(is_jfloat(), "should be");
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170 return llvm_value();
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171 }
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172 Value* SharkNormalValue::jdouble_value() const {
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173 assert(is_jdouble(), "should be");
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174 return llvm_value();
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175 }
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176 Value* SharkNormalValue::jobject_value() const {
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177 assert(is_jobject(), "should be");
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178 return llvm_value();
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179 }
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180 Value* SharkNormalValue::jarray_value() const {
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181 // XXX assert(is_jarray(), "should be");
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182 // XXX http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=324
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183 assert(is_jobject(), "should be");
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184 return llvm_value();
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185 }
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186 int SharkAddressValue::address_value() const {
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187 return _bci;
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188 }
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189
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190 // Type-losing conversions -- use with care!
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191
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192 Value* SharkNormalValue::generic_value() const {
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193 return llvm_value();
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194 }
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195 Value* SharkAddressValue::generic_value() const {
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196 return LLVMValue::intptr_constant(address_value());
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197 }
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198
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199 Value* SharkValue::intptr_value(SharkBuilder* builder) const {
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200 ShouldNotCallThis();
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201 }
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202 Value* SharkNormalValue::intptr_value(SharkBuilder* builder) const {
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203 return builder->CreatePtrToInt(jobject_value(), SharkType::intptr_type());
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204 }
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205
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206 // Phi-style stuff for SharkPHIState::add_incoming
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207
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208 void SharkValue::addIncoming(SharkValue *value, BasicBlock* block) {
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209 ShouldNotCallThis();
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210 }
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211 void SharkPHIValue::addIncoming(SharkValue *value, BasicBlock* block) {
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212 assert(!is_clone(), "shouldn't be");
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213 ((llvm::PHINode *) generic_value())->addIncoming(
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214 value->generic_value(), block);
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215 if (!value->zero_checked())
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216 _all_incomers_zero_checked = false;
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217 }
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218 void SharkAddressValue::addIncoming(SharkValue *value, BasicBlock* block) {
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219 assert(this->equal_to(value), "should be");
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220 }
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221
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222 // Phi-style stuff for SharkState::merge
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223
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224 SharkValue* SharkNormalValue::merge(SharkBuilder* builder,
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225 SharkValue* other,
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226 BasicBlock* other_block,
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227 BasicBlock* this_block,
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228 const char* name) {
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229 assert(type() == other->type(), "should be");
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230 assert(zero_checked() == other->zero_checked(), "should be");
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231
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232 PHINode *phi = builder->CreatePHI(SharkType::to_stackType(type()), name);
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233 phi->addIncoming(this->generic_value(), this_block);
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234 phi->addIncoming(other->generic_value(), other_block);
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235 return SharkValue::create_generic(type(), phi, zero_checked());
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236 }
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237 SharkValue* SharkAddressValue::merge(SharkBuilder* builder,
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238 SharkValue* other,
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239 BasicBlock* other_block,
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240 BasicBlock* this_block,
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241 const char* name) {
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242 assert(this->equal_to(other), "should be");
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243 return this;
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244 }
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245
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246 // Repeated null and divide-by-zero check removal
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247
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248 bool SharkValue::zero_checked() const {
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249 ShouldNotCallThis();
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250 }
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251 void SharkValue::set_zero_checked(bool zero_checked) {
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252 ShouldNotCallThis();
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253 }
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254
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255 bool SharkNormalValue::zero_checked() const {
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256 return _zero_checked;
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257 }
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258 void SharkNormalValue::set_zero_checked(bool zero_checked) {
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259 _zero_checked = zero_checked;
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260 }
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