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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 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/_sharkIntrinsics.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 bool SharkIntrinsics::is_intrinsic(ciMethod *target) {
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32 switch (target->intrinsic_id()) {
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33 case vmIntrinsics::_none:
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34 return false;
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35
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36 // java.lang.Math
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37 case vmIntrinsics::_min:
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38 case vmIntrinsics::_max:
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39 case vmIntrinsics::_dabs:
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40 case vmIntrinsics::_dsin:
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41 case vmIntrinsics::_dcos:
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42 case vmIntrinsics::_dtan:
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43 case vmIntrinsics::_datan2:
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44 case vmIntrinsics::_dsqrt:
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45 case vmIntrinsics::_dlog:
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46 case vmIntrinsics::_dlog10:
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47 case vmIntrinsics::_dpow:
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48 case vmIntrinsics::_dexp:
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49 return true;
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50
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51 // java.lang.Object
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52 case vmIntrinsics::_getClass:
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53 return true;
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54
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55 // java.lang.System
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56 case vmIntrinsics::_currentTimeMillis:
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57 return true;
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58
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59 // java.lang.Thread
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60 case vmIntrinsics::_currentThread:
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61 return true;
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62
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63 // sun.misc.Unsafe
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64 case vmIntrinsics::_compareAndSwapInt:
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65 return true;
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66
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67 default:
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68 if (SharkPerformanceWarnings) {
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69 warning(
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70 "unhandled intrinsic vmIntrinsic::%s",
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71 vmIntrinsics::name_at(target->intrinsic_id()));
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72 }
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73 }
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74 return false;
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75 }
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76
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77 void SharkIntrinsics::inline_intrinsic(ciMethod *target, SharkState *state) {
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78 SharkIntrinsics intrinsic(state, target);
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79 intrinsic.do_intrinsic();
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80 }
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81
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82 void SharkIntrinsics::do_intrinsic() {
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83 switch (target()->intrinsic_id()) {
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84 // java.lang.Math
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85 case vmIntrinsics::_min:
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86 do_Math_minmax(llvm::ICmpInst::ICMP_SLE);
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87 break;
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88 case vmIntrinsics::_max:
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89 do_Math_minmax(llvm::ICmpInst::ICMP_SGE);
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90 break;
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91 case vmIntrinsics::_dabs:
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92 do_Math_1to1(builder()->fabs());
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93 break;
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94 case vmIntrinsics::_dsin:
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95 do_Math_1to1(builder()->sin());
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96 break;
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97 case vmIntrinsics::_dcos:
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98 do_Math_1to1(builder()->cos());
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99 break;
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100 case vmIntrinsics::_dtan:
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101 do_Math_1to1(builder()->tan());
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102 break;
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103 case vmIntrinsics::_datan2:
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104 do_Math_2to1(builder()->atan2());
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105 break;
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106 case vmIntrinsics::_dsqrt:
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107 do_Math_1to1(builder()->sqrt());
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108 break;
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109 case vmIntrinsics::_dlog:
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110 do_Math_1to1(builder()->log());
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111 break;
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112 case vmIntrinsics::_dlog10:
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113 do_Math_1to1(builder()->log10());
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114 break;
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115 case vmIntrinsics::_dpow:
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116 do_Math_2to1(builder()->pow());
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117 break;
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118 case vmIntrinsics::_dexp:
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119 do_Math_1to1(builder()->exp());
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120 break;
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121
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122 // java.lang.Object
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123 case vmIntrinsics::_getClass:
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124 do_Object_getClass();
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125 break;
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126
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127 // java.lang.System
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128 case vmIntrinsics::_currentTimeMillis:
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129 do_System_currentTimeMillis();
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130 break;
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131
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132 // java.lang.Thread
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133 case vmIntrinsics::_currentThread:
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134 do_Thread_currentThread();
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135 break;
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136
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137 // sun.misc.Unsafe
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138 case vmIntrinsics::_compareAndSwapInt:
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139 do_Unsafe_compareAndSwapInt();
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140 break;
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141
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142 default:
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143 ShouldNotReachHere();
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144 }
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145 }
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146
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147 void SharkIntrinsics::do_Math_minmax(ICmpInst::Predicate p) {
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148 // Pop the arguments
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149 SharkValue *sb = state()->pop();
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150 SharkValue *sa = state()->pop();
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151 Value *a = sa->jint_value();
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152 Value *b = sb->jint_value();
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153
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154 // Perform the test
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155 BasicBlock *ip = builder()->GetBlockInsertionPoint();
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156 BasicBlock *return_a = builder()->CreateBlock(ip, "return_a");
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157 BasicBlock *return_b = builder()->CreateBlock(ip, "return_b");
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158 BasicBlock *done = builder()->CreateBlock(ip, "done");
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159
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160 builder()->CreateCondBr(builder()->CreateICmp(p, a, b), return_a, return_b);
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161
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162 builder()->SetInsertPoint(return_a);
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163 builder()->CreateBr(done);
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164
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165 builder()->SetInsertPoint(return_b);
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166 builder()->CreateBr(done);
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167
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168 builder()->SetInsertPoint(done);
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169 PHINode *phi = builder()->CreatePHI(a->getType(), "result");
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170 phi->addIncoming(a, return_a);
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171 phi->addIncoming(b, return_b);
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172
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173 // Push the result
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174 state()->push(
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175 SharkValue::create_jint(
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176 phi,
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177 sa->zero_checked() && sb->zero_checked()));
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178 }
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179
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180 void SharkIntrinsics::do_Math_1to1(Value *function) {
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181 SharkValue *empty = state()->pop();
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182 assert(empty == NULL, "should be");
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183 state()->push(
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184 SharkValue::create_jdouble(
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185 builder()->CreateCall(
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186 function, state()->pop()->jdouble_value())));
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187 state()->push(NULL);
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188 }
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189
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190 void SharkIntrinsics::do_Math_2to1(Value *function) {
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191 SharkValue *empty = state()->pop();
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192 assert(empty == NULL, "should be");
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193 Value *y = state()->pop()->jdouble_value();
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194 empty = state()->pop();
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195 assert(empty == NULL, "should be");
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196 Value *x = state()->pop()->jdouble_value();
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197
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198 state()->push(
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199 SharkValue::create_jdouble(
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200 builder()->CreateCall2(function, x, y)));
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201 state()->push(NULL);
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202 }
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203
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204 void SharkIntrinsics::do_Object_getClass() {
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205 Value *klass = builder()->CreateValueOfStructEntry(
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206 state()->pop()->jobject_value(),
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207 in_ByteSize(oopDesc::klass_offset_in_bytes()),
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208 SharkType::oop_type(),
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209 "klass");
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210
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211 Value *klass_part = builder()->CreateAddressOfStructEntry(
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212 klass,
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213 in_ByteSize(klassOopDesc::klass_part_offset_in_bytes()),
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214 SharkType::klass_type(),
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215 "klass_part");
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216
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217 state()->push(
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218 SharkValue::create_jobject(
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219 builder()->CreateValueOfStructEntry(
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220 klass_part,
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221 in_ByteSize(Klass::java_mirror_offset_in_bytes()),
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222 SharkType::oop_type(),
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223 "java_mirror"),
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224 true));
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225 }
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226
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227 void SharkIntrinsics::do_System_currentTimeMillis() {
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228 state()->push(
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229 SharkValue::create_jlong(
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230 builder()->CreateCall(builder()->current_time_millis()),
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231 false));
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232 state()->push(NULL);
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233 }
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234
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235 void SharkIntrinsics::do_Thread_currentThread() {
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236 state()->push(
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237 SharkValue::create_jobject(
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238 builder()->CreateValueOfStructEntry(
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239 thread(), JavaThread::threadObj_offset(),
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240 SharkType::oop_type(),
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241 "threadObj"),
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242 true));
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243 }
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244
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245 void SharkIntrinsics::do_Unsafe_compareAndSwapInt() {
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246 // Pop the arguments
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247 Value *x = state()->pop()->jint_value();
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248 Value *e = state()->pop()->jint_value();
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249 SharkValue *empty = state()->pop();
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250 assert(empty == NULL, "should be");
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251 Value *offset = state()->pop()->jlong_value();
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252 Value *object = state()->pop()->jobject_value();
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253 Value *unsafe = state()->pop()->jobject_value();
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254
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255 // Convert the offset
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256 offset = builder()->CreateCall(
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257 builder()->unsafe_field_offset_to_byte_offset(),
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258 offset);
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259
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260 // Locate the field
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261 Value *addr = builder()->CreateIntToPtr(
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262 builder()->CreateAdd(
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263 builder()->CreatePtrToInt(object, SharkType::intptr_type()),
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264 builder()->CreateIntCast(offset, SharkType::intptr_type(), true)),
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265 PointerType::getUnqual(SharkType::jint_type()),
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266 "addr");
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267
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268 // Perform the operation
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269 Value *result = builder()->CreateCmpxchgInt(x, addr, e);
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270
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271 // Push the result
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272 state()->push(
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273 SharkValue::create_jint(
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274 builder()->CreateIntCast(
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275 builder()->CreateICmpEQ(result, e), SharkType::jint_type(), true),
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276 false));
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277 }
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