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1692
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1 /*
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1972
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2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
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1692
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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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1972
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26 #include "precompiled.hpp"
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27 #include "ci/ciType.hpp"
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28 #include "shark/llvmHeaders.hpp"
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29 #include "shark/llvmValue.hpp"
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30 #include "shark/sharkBuilder.hpp"
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31 #include "shark/sharkValue.hpp"
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1692
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32
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33 using namespace llvm;
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34
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35 // Cloning
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36
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37 SharkValue* SharkNormalValue::clone() const {
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38 return SharkValue::create_generic(type(), generic_value(), zero_checked());
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39 }
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40 SharkValue* SharkPHIValue::clone() const {
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41 return SharkValue::create_phi(type(), (PHINode *) generic_value(), this);
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42 }
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43 SharkValue* SharkAddressValue::clone() const {
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44 return SharkValue::address_constant(address_value());
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45 }
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46
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47 // Casting
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48
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49 bool SharkValue::is_phi() const {
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50 return false;
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51 }
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52 bool SharkPHIValue::is_phi() const {
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53 return true;
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54 }
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55 SharkPHIValue* SharkValue::as_phi() {
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56 ShouldNotCallThis();
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57 }
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58 SharkPHIValue* SharkPHIValue::as_phi() {
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59 return this;
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60 }
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61
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62 // Comparison
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63
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64 bool SharkNormalValue::equal_to(SharkValue *other) const {
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65 return (this->type() == other->type() &&
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66 this->generic_value() == other->generic_value() &&
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67 this->zero_checked() == other->zero_checked());
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68 }
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69 bool SharkAddressValue::equal_to(SharkValue *other) const {
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70 return (this->address_value() == other->address_value());
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71 }
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72
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73 // Type access
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74
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75 ciType* SharkValue::type() const {
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76 ShouldNotCallThis();
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77 }
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78 ciType* SharkNormalValue::type() const {
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79 return _type;
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80 }
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81
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82 BasicType SharkNormalValue::basic_type() const {
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83 return type()->basic_type();
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84 }
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85 BasicType SharkAddressValue::basic_type() const {
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86 return T_ADDRESS;
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87 }
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88
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89 int SharkNormalValue::size() const {
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90 return type()->size();
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91 }
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92 int SharkAddressValue::size() const {
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93 return 1;
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94 }
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95
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96 bool SharkValue::is_jint() const {
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97 return false;
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98 }
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99 bool SharkValue::is_jlong() const {
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100 return false;
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101 }
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102 bool SharkValue::is_jfloat() const {
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103 return false;
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104 }
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105 bool SharkValue::is_jdouble() const {
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106 return false;
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107 }
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108 bool SharkValue::is_jobject() const {
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109 return false;
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110 }
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111 bool SharkValue::is_jarray() const {
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112 return false;
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113 }
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114 bool SharkValue::is_address() const {
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115 return false;
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116 }
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117
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118 bool SharkNormalValue::is_jint() const {
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119 return llvm_value()->getType() == SharkType::jint_type();
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120 }
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121 bool SharkNormalValue::is_jlong() const {
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122 return llvm_value()->getType() == SharkType::jlong_type();
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123 }
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124 bool SharkNormalValue::is_jfloat() const {
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125 return llvm_value()->getType() == SharkType::jfloat_type();
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126 }
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127 bool SharkNormalValue::is_jdouble() const {
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128 return llvm_value()->getType() == SharkType::jdouble_type();
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129 }
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130 bool SharkNormalValue::is_jobject() const {
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131 return llvm_value()->getType() == SharkType::oop_type();
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132 }
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133 bool SharkNormalValue::is_jarray() const {
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134 return basic_type() == T_ARRAY;
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135 }
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136 bool SharkAddressValue::is_address() const {
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137 return true;
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138 }
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139
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140 // Typed conversions from SharkValues
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141
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142 Value* SharkValue::jint_value() const {
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143 ShouldNotCallThis();
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144 }
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145 Value* SharkValue::jlong_value() const {
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146 ShouldNotCallThis();
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147 }
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148 Value* SharkValue::jfloat_value() const {
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149 ShouldNotCallThis();
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150 }
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151 Value* SharkValue::jdouble_value() const {
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152 ShouldNotCallThis();
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153 }
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154 Value* SharkValue::jobject_value() const {
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155 ShouldNotCallThis();
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156 }
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157 Value* SharkValue::jarray_value() const {
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158 ShouldNotCallThis();
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159 }
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160 int SharkValue::address_value() const {
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161 ShouldNotCallThis();
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162 }
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163
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164 Value* SharkNormalValue::jint_value() const {
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165 assert(is_jint(), "should be");
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166 return llvm_value();
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167 }
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168 Value* SharkNormalValue::jlong_value() const {
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169 assert(is_jlong(), "should be");
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170 return llvm_value();
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171 }
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172 Value* SharkNormalValue::jfloat_value() const {
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173 assert(is_jfloat(), "should be");
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174 return llvm_value();
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175 }
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176 Value* SharkNormalValue::jdouble_value() const {
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177 assert(is_jdouble(), "should be");
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178 return llvm_value();
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179 }
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180 Value* SharkNormalValue::jobject_value() const {
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181 assert(is_jobject(), "should be");
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182 return llvm_value();
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183 }
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184 Value* SharkNormalValue::jarray_value() const {
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185 // XXX assert(is_jarray(), "should be");
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186 // XXX http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=324
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187 assert(is_jobject(), "should be");
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188 return llvm_value();
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189 }
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190 int SharkAddressValue::address_value() const {
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191 return _bci;
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192 }
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193
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194 // Type-losing conversions -- use with care!
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195
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196 Value* SharkNormalValue::generic_value() const {
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197 return llvm_value();
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198 }
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199 Value* SharkAddressValue::generic_value() const {
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200 return LLVMValue::intptr_constant(address_value());
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201 }
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202
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203 Value* SharkValue::intptr_value(SharkBuilder* builder) const {
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204 ShouldNotCallThis();
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205 }
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206 Value* SharkNormalValue::intptr_value(SharkBuilder* builder) const {
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207 return builder->CreatePtrToInt(jobject_value(), SharkType::intptr_type());
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208 }
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209
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210 // Phi-style stuff for SharkPHIState::add_incoming
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211
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212 void SharkValue::addIncoming(SharkValue *value, BasicBlock* block) {
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213 ShouldNotCallThis();
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214 }
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215 void SharkPHIValue::addIncoming(SharkValue *value, BasicBlock* block) {
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216 assert(!is_clone(), "shouldn't be");
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217 ((llvm::PHINode *) generic_value())->addIncoming(
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218 value->generic_value(), block);
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219 if (!value->zero_checked())
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220 _all_incomers_zero_checked = false;
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221 }
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222 void SharkAddressValue::addIncoming(SharkValue *value, BasicBlock* block) {
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223 assert(this->equal_to(value), "should be");
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224 }
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225
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226 // Phi-style stuff for SharkState::merge
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227
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228 SharkValue* SharkNormalValue::merge(SharkBuilder* builder,
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229 SharkValue* other,
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230 BasicBlock* other_block,
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231 BasicBlock* this_block,
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232 const char* name) {
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233 assert(type() == other->type(), "should be");
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234 assert(zero_checked() == other->zero_checked(), "should be");
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235
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7195
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236 PHINode *phi = builder->CreatePHI(SharkType::to_stackType(type()), 0, name);
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237 phi->addIncoming(this->generic_value(), this_block);
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238 phi->addIncoming(other->generic_value(), other_block);
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239 return SharkValue::create_generic(type(), phi, zero_checked());
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240 }
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241 SharkValue* SharkAddressValue::merge(SharkBuilder* builder,
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242 SharkValue* other,
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243 BasicBlock* other_block,
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244 BasicBlock* this_block,
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245 const char* name) {
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246 assert(this->equal_to(other), "should be");
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247 return this;
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248 }
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249
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250 // Repeated null and divide-by-zero check removal
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251
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252 bool SharkValue::zero_checked() const {
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253 ShouldNotCallThis();
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254 }
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255 void SharkValue::set_zero_checked(bool zero_checked) {
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256 ShouldNotCallThis();
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257 }
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258
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259 bool SharkNormalValue::zero_checked() const {
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260 return _zero_checked;
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261 }
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262 void SharkNormalValue::set_zero_checked(bool zero_checked) {
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263 _zero_checked = zero_checked;
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264 }
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