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annotate graal/GraalCompiler/src/com/sun/c1x/ir/Invoke.java @ 2538:e1ba5a93e997

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Clean up on Value class and LIRGenerator/LIRItem-related things.
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Wed, 27 Apr 2011 20:13:54 +0200
parents 16b9a8b5ad39
children 3fc322165071
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1 /*
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2 * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.sun.c1x.ir;
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24
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25 import java.lang.reflect.*;
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26
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27 import com.sun.c1x.debug.*;
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28 import com.sun.c1x.util.*;
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29 import com.sun.c1x.value.*;
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30 import com.sun.cri.bytecode.*;
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31 import com.sun.cri.ci.*;
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32 import com.sun.cri.ri.*;
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33
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34 /**
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35 * The {@code Invoke} instruction represents all kinds of method calls.
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36 */
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37 public final class Invoke extends StateSplit {
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38
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39 public final int opcode;
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40 public final Value[] arguments;
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41 public final RiMethod target;
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42 public final RiType returnType;
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43
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44 /**
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45 * Constructs a new Invoke instruction.
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46 *
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47 * @param opcode the opcode of the invoke
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48 * @param result the result type
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49 * @param args the list of instructions producing arguments to the invocation, including the receiver object
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50 * @param isStatic {@code true} if this call is static (no receiver object)
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51 * @param target the target method being called
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52 * @param stateBefore the state before executing the invocation
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53 */
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54 public Invoke(int opcode, CiKind result, Value[] args, RiMethod target, RiType returnType, FrameState stateBefore) {
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55 super(result, stateBefore);
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56 this.opcode = opcode;
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57 this.arguments = args;
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58 this.target = target;
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59 this.returnType = returnType;
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60 if (isStatic() || args[0].isNonNull() || args[0].kind.isWord()) {
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61 eliminateNullCheck();
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62 }
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63 }
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64
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65 /**
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66 * Gets the opcode of this invoke instruction.
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67 * @return the opcode
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68 */
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69 public int opcode() {
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70 return opcode;
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71 }
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72
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73 /**
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74 * Checks whether this is an invocation of a static method.
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75 * @return {@code true} if the invocation is a static invocation
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76 */
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77 public boolean isStatic() {
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78 return opcode == Bytecodes.INVOKESTATIC;
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79 }
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80
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81 @Override
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82 public RiType declaredType() {
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83 return returnType;
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84 }
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85
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86 /**
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87 * Gets the instruction that produces the receiver object for this invocation, if any.
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88 * @return the instruction that produces the receiver object for this invocation if any, {@code null} if this
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89 * invocation does not take a receiver object
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90 */
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91 public Value receiver() {
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92 assert !isStatic();
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93 return arguments[0];
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94 }
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95
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96 /**
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97 * Gets the target method for this invocation instruction.
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98 * @return the target method
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99 */
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100 public RiMethod target() {
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101 return target;
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102 }
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103
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104 /**
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105 * Gets the list of instructions that produce input for this instruction.
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106 * @return the list of instructions that produce input
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107 */
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108 public Value[] arguments() {
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109 return arguments;
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110 }
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111
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112 /**
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113 * Checks whether this instruction can trap.
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114 * @return {@code true}, conservatively assuming the called method may throw an exception
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115 */
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116 @Override
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117 public boolean canTrap() {
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118 return true;
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119 }
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120
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121 /**
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122 * Checks whether this invocation has a receiver object.
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123 * @return {@code true} if this invocation has a receiver object; {@code false} otherwise, if this is a
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124 * static call
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125 */
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126 public boolean hasReceiver() {
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127 return !isStatic();
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128 }
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129
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130 @Override
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131 public void inputValuesDo(ValueClosure closure) {
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132 for (int i = 0; i < arguments.length; i++) {
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133 Value arg = arguments[i];
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134 if (arg != null) {
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135 arguments[i] = closure.apply(arg);
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136 assert arguments[i] != null;
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137 }
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138 }
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139 }
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140
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141 @Override
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142 public void accept(ValueVisitor v) {
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143 v.visitInvoke(this);
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144 }
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145
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146 public CiKind[] signature() {
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147 CiKind receiver = isStatic() ? null : target.holder().kind();
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148 return Util.signatureToKinds(target.signature(), receiver);
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149 }
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150
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151 @Override
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152 public void print(LogStream out) {
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153 int argStart = 0;
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154 if (hasReceiver()) {
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155 out.print(receiver()).print('.');
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156 argStart = 1;
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157 }
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158
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159 RiMethod target = target();
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160 out.print(target.name()).print('(');
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161 Value[] arguments = arguments();
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162 for (int i = argStart; i < arguments.length; i++) {
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163 if (i > argStart) {
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164 out.print(", ");
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165 }
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166 out.print(arguments[i]);
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167 }
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168 out.print(CiUtil.format(") [method: %H.%n(%p):%r]", target, false));
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169 }
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170 }