Mercurial > hg > graal-jvmci-8
annotate graal/GraalCompiler/src/com/sun/c1x/value/FrameStateBuilder.java @ 2840:75e0d39833a0
new CompilerGraph, create only one Return and one Unwind per CompilerGraph
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Tue, 31 May 2011 16:53:19 +0200 |
parents | bfce42cd9c07 |
children | 7596ae867a7b |
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1 /* |
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2 * Copyright (c) 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.value; |
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24 |
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25 import static com.sun.c1x.value.ValueUtil.*; |
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26 import static java.lang.reflect.Modifier.*; |
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27 |
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28 import java.util.*; |
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29 |
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30 import com.oracle.graal.graph.*; |
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31 import com.sun.c1x.graph.*; |
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32 import com.sun.c1x.ir.*; |
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33 import com.sun.cri.ci.*; |
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34 import com.sun.cri.ri.*; |
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35 |
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36 |
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37 public class FrameStateBuilder implements FrameStateAccess { |
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38 |
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39 private final Graph graph; |
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40 |
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41 private final Value[] locals; |
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42 private final Value[] stack; |
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43 private final ArrayList<Value> locks; |
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44 |
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45 private int stackIndex; |
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46 |
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47 public FrameStateBuilder(RiMethod method, Graph graph) { |
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48 this.graph = graph; |
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49 this.locals = new Value[method.maxLocals()]; |
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50 this.stack = new Value[method.maxStackSize()]; |
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51 |
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52 int javaIndex = 0; |
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53 int index = 0; |
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54 if (!isStatic(method.accessFlags())) { |
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55 // add the receiver and assume it is non null |
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56 Local local = new Local(method.holder().kind(), javaIndex, graph); |
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57 local.inputs().set(0, graph.start()); |
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58 local.setNonNull(true); |
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59 local.setDeclaredType(method.holder()); |
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60 storeLocal(javaIndex, local); |
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61 javaIndex = 1; |
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62 index = 1; |
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63 } |
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64 RiSignature sig = method.signature(); |
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65 int max = sig.argumentCount(false); |
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66 RiType accessingClass = method.holder(); |
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67 for (int i = 0; i < max; i++) { |
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68 RiType type = sig.argumentTypeAt(i, accessingClass); |
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69 CiKind kind = type.kind().stackKind(); |
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70 Local local = new Local(kind, index, graph); |
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71 local.inputs().set(0, graph.start()); |
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72 if (type.isResolved()) { |
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73 local.setDeclaredType(type); |
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74 } |
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75 storeLocal(javaIndex, local); |
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76 javaIndex += kind.sizeInSlots(); |
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77 index++; |
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78 } |
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79 this.locks = new ArrayList<Value>(); |
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80 } |
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81 |
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82 public void initializeFrom(FrameState other) { |
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83 assert locals.length == other.localsSize(); |
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84 assert stack.length >= other.stackSize(); |
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85 |
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86 this.stackIndex = other.stackSize(); |
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87 for (int i = 0; i < other.localsSize(); i++) { |
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88 locals[i] = other.localAt(i); |
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89 } |
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90 for (int i = 0; i < other.stackSize(); i++) { |
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91 stack[i] = other.stackAt(i); |
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92 } |
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93 locks.clear(); |
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94 for (int i = 0; i < other.locksSize(); i++) { |
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95 locks.add(other.lockAt(i)); |
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96 } |
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97 } |
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98 |
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99 public FrameState create(int bci) { |
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100 return new FrameState(bci, locals, stack, stackIndex, locks, graph); |
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101 } |
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102 |
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103 @Override |
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104 public FrameState duplicateWithEmptyStack(int bci) { |
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105 FrameState frameState = new FrameState(bci, locals, new Value[0], 0, locks, graph); |
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106 frameState.setOuterFrameState(outerFrameState()); |
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107 return frameState; |
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108 } |
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109 |
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110 /** |
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111 * Pushes an instruction onto the stack with the expected type. |
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112 * @param kind the type expected for this instruction |
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113 * @param x the instruction to push onto the stack |
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114 */ |
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115 public void push(CiKind kind, Value x) { |
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116 assert kind != CiKind.Void; |
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117 xpush(assertKind(kind, x)); |
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118 if (kind.sizeInSlots() == 2) { |
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119 xpush(null); |
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120 } |
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121 } |
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122 |
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123 /** |
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124 * Pushes a value onto the stack without checking the type. |
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125 * @param x the instruction to push onto the stack |
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126 */ |
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127 public void xpush(Value x) { |
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128 assert x == null || !x.isDeleted(); |
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129 stack[stackIndex++] = x; |
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130 } |
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131 |
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132 /** |
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133 * Pushes a value onto the stack and checks that it is an int. |
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134 * @param x the instruction to push onto the stack |
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135 */ |
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136 public void ipush(Value x) { |
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137 xpush(assertInt(x)); |
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138 } |
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139 |
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140 /** |
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141 * Pushes a value onto the stack and checks that it is a float. |
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142 * @param x the instruction to push onto the stack |
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143 */ |
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144 public void fpush(Value x) { |
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145 xpush(assertFloat(x)); |
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146 } |
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147 |
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148 /** |
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149 * Pushes a value onto the stack and checks that it is an object. |
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150 * @param x the instruction to push onto the stack |
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151 */ |
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152 public void apush(Value x) { |
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153 xpush(assertObject(x)); |
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154 } |
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155 |
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156 /** |
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157 * Pushes a value onto the stack and checks that it is a word. |
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158 * @param x the instruction to push onto the stack |
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159 */ |
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160 public void wpush(Value x) { |
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161 xpush(assertWord(x)); |
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162 } |
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163 |
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164 /** |
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165 * Pushes a value onto the stack and checks that it is a JSR return address. |
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166 * @param x the instruction to push onto the stack |
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167 */ |
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168 public void jpush(Value x) { |
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169 xpush(assertJsr(x)); |
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170 } |
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171 |
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172 /** |
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173 * Pushes a value onto the stack and checks that it is a long. |
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174 * |
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175 * @param x the instruction to push onto the stack |
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176 */ |
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177 public void lpush(Value x) { |
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178 xpush(assertLong(x)); |
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179 xpush(null); |
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180 } |
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181 |
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182 /** |
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183 * Pushes a value onto the stack and checks that it is a double. |
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184 * @param x the instruction to push onto the stack |
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185 */ |
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186 public void dpush(Value x) { |
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187 xpush(assertDouble(x)); |
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188 xpush(null); |
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189 } |
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190 |
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191 public void pushReturn(CiKind kind, Value x) { |
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192 if (kind != CiKind.Void) { |
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193 push(kind.stackKind(), x); |
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194 } |
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195 } |
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196 |
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197 /** |
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198 * Pops an instruction off the stack with the expected type. |
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199 * @param kind the expected type |
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200 * @return the instruction on the top of the stack |
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201 */ |
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202 public Value pop(CiKind kind) { |
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203 assert kind != CiKind.Void; |
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204 if (kind.sizeInSlots() == 2) { |
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205 xpop(); |
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206 } |
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207 return assertKind(kind, xpop()); |
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208 } |
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209 |
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210 /** |
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211 * Pops a value off of the stack without checking the type. |
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212 * @return x the instruction popped off the stack |
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213 */ |
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214 public Value xpop() { |
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215 Value result = stack[--stackIndex]; |
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216 assert result == null || !result.isDeleted(); |
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217 return result; |
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218 } |
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219 |
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220 /** |
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221 * Pops a value off of the stack and checks that it is an int. |
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222 * @return x the instruction popped off the stack |
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223 */ |
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224 public Value ipop() { |
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225 return assertInt(xpop()); |
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226 } |
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227 |
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228 /** |
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229 * Pops a value off of the stack and checks that it is a float. |
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230 * @return x the instruction popped off the stack |
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231 */ |
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232 public Value fpop() { |
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233 return assertFloat(xpop()); |
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234 } |
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235 |
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236 /** |
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237 * Pops a value off of the stack and checks that it is an object. |
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238 * @return x the instruction popped off the stack |
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239 */ |
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240 public Value apop() { |
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241 return assertObject(xpop()); |
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242 } |
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243 |
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244 /** |
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245 * Pops a value off of the stack and checks that it is a word. |
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246 * @return x the instruction popped off the stack |
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247 */ |
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248 public Value wpop() { |
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249 return assertWord(xpop()); |
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250 } |
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251 |
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252 /** |
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253 * Pops a value off of the stack and checks that it is a JSR return address. |
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254 * @return x the instruction popped off the stack |
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255 */ |
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256 public Value jpop() { |
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257 return assertJsr(xpop()); |
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258 } |
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259 |
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260 /** |
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261 * Pops a value off of the stack and checks that it is a long. |
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262 * @return x the instruction popped off the stack |
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263 */ |
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264 public Value lpop() { |
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265 assertHigh(xpop()); |
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266 return assertLong(xpop()); |
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267 } |
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268 |
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269 /** |
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270 * Pops a value off of the stack and checks that it is a double. |
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271 * @return x the instruction popped off the stack |
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272 */ |
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273 public Value dpop() { |
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274 assertHigh(xpop()); |
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275 return assertDouble(xpop()); |
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276 } |
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277 |
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278 /** |
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279 * Pop the specified number of slots off of this stack and return them as an array of instructions. |
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280 * @param size the number of arguments off of the stack |
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281 * @return an array containing the arguments off of the stack |
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282 */ |
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283 public Value[] popArguments(int size) { |
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284 int base = stackIndex - size; |
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285 Value[] r = new Value[size]; |
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286 for (int i = 0; i < size; ++i) { |
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287 assert stack[base + i] != null || stack[base + i - 1].kind.jvmSlots == 2; |
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288 r[i] = stack[base + i]; |
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289 } |
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290 stackIndex = base; |
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291 return r; |
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292 } |
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293 |
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294 public CiKind peekKind() { |
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295 Value top = stackAt(stackSize() - 1); |
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296 if (top == null) { |
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297 top = stackAt(stackSize() - 2); |
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298 assert top != null; |
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299 assert top.kind.isDoubleWord(); |
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300 } |
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301 return top.kind; |
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302 } |
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303 |
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304 /** |
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305 * Truncates this stack to the specified size. |
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306 * @param size the size to truncate to |
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307 */ |
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308 public void truncateStack(int size) { |
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309 stackIndex = size; |
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310 assert stackIndex >= 0; |
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311 } |
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312 |
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313 /** |
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314 * Clears all values on this stack. |
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315 */ |
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316 public void clearStack() { |
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317 stackIndex = 0; |
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318 } |
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319 |
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320 /** |
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321 * Loads the local variable at the specified index. |
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322 * |
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323 * @param i the index of the local variable to load |
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324 * @return the instruction that produced the specified local |
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325 */ |
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326 public Value loadLocal(int i) { |
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327 Value x = locals[i]; |
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328 if (x != null) { |
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329 if (x instanceof Phi && ((Phi) x).isDead()) { |
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330 return null; |
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331 } |
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332 assert x.kind.isSingleWord() || locals[i + 1] == null || locals[i + 1] instanceof Phi; |
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333 } |
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334 return x; |
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335 } |
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336 |
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337 /** |
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338 * Stores a given local variable at the specified index. If the value is a {@linkplain CiKind#isDoubleWord() double word}, |
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339 * then the next local variable index is also overwritten. |
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340 * |
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341 * @param i the index at which to store |
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342 * @param x the instruction which produces the value for the local |
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343 */ |
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344 public void storeLocal(int i, Value x) { |
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345 locals[i] = x; |
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346 if (isDoubleWord(x)) { |
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347 // (tw) if this was a double word then kill i+1 |
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348 locals[i + 1] = null; |
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349 } |
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350 if (i > 0) { |
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351 // if there was a double word at i - 1, then kill it |
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352 Value p = locals[i - 1]; |
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353 if (isDoubleWord(p)) { |
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354 locals[i - 1] = null; |
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355 } |
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356 } |
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357 } |
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358 |
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359 /** |
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360 * Locks a new object within the specified IRScope. |
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361 * @param scope the IRScope in which this locking operation occurs |
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362 * @param obj the object being locked |
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363 */ |
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364 public void lock(IR ir, Value obj, int totalNumberOfLocks) { |
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365 locks.add(obj); |
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366 } |
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367 |
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368 /** |
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369 * Unlock the lock on the top of the stack. |
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370 */ |
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371 public void unlock() { |
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372 locks.remove(locks.size() - 1); |
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373 } |
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374 |
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375 /** |
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376 * Get the value on the stack at the specified stack index. |
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377 * |
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378 * @param i the index into the stack, with {@code 0} being the bottom of the stack |
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379 * @return the instruction at the specified position in the stack |
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380 */ |
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381 public final Value stackAt(int i) { |
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382 return stack[i]; |
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383 } |
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384 |
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385 /** |
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386 * Gets the value in the local variables at the specified index. |
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387 * |
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388 * @param i the index into the locals |
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389 * @return the instruction that produced the value for the specified local |
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390 */ |
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391 public final Value localAt(int i) { |
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392 return locals[i]; |
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393 } |
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394 |
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395 /** |
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396 * Retrieves the lock at the specified index in the lock stack. |
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397 * @param i the index into the lock stack |
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398 * @return the instruction which produced the object at the specified location in the lock stack |
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399 */ |
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400 public final Value lockAt(int i) { |
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401 return locks.get(i); |
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402 } |
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403 |
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404 /** |
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405 * Returns the size of the local variables. |
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406 * |
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407 * @return the size of the local variables |
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408 */ |
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409 public int localsSize() { |
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410 return locals.length; |
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411 } |
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412 |
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413 /** |
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414 * Gets number of locks held by this frame state. |
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415 */ |
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416 public int locksSize() { |
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417 return locks.size(); |
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418 } |
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419 |
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420 /** |
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421 * Gets the current size (height) of the stack. |
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422 */ |
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423 public int stackSize() { |
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424 return stackIndex; |
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425 } |
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426 |
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427 public Iterator<Value> locals() { |
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428 return new ValueArrayIterator(locals); |
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429 } |
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430 |
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431 public Iterator<Value> stack() { |
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432 return new ValueArrayIterator(locals); |
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433 } |
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434 |
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FrameState cleanup: split into FrameStateBuilder and fixed-size FrameState, removed MutableFrameState
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435 public List<Value> locks() { |
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436 return Collections.unmodifiableList(locks); |
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437 } |
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438 |
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439 |
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FrameState cleanup: split into FrameStateBuilder and fixed-size FrameState, removed MutableFrameState
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440 private static class ValueArrayIterator implements Iterator<Value> { |
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441 private final Value[] array; |
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442 private int index; |
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443 private int length; |
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444 |
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445 public ValueArrayIterator(Value[] array, int length) { |
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446 assert length <= array.length; |
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447 this.array = array; |
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448 this.index = 0; |
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449 } |
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450 |
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451 public ValueArrayIterator(Value[] array) { |
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452 this(array, array.length); |
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453 } |
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454 |
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455 @Override |
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456 public boolean hasNext() { |
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457 return index < array.length; |
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458 } |
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459 |
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460 @Override |
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461 public Value next() { |
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462 return array[index++]; |
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463 } |
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464 |
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465 @Override |
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466 public void remove() { |
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467 throw new UnsupportedOperationException("cannot remove from array"); |
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468 } |
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469 |
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FrameState cleanup: split into FrameStateBuilder and fixed-size FrameState, removed MutableFrameState
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470 } |
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471 |
2616
3558ca7088c0
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472 |
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473 @Override |
2636
8c02ca1e9eb1
Fixed bci for stateBefore in BlockBegin
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474 public FrameState duplicate(int bci) { |
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Fixed bci for stateBefore in BlockBegin
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475 return create(bci); |
2616
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476 } |
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477 |
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478 @Override |
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479 public Value valueAt(int i) { |
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480 if (i < locals.length) { |
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481 return locals[i]; |
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482 } else if (i < locals.length + stackIndex) { |
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483 return stack[i - locals.length]; |
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484 } else { |
3558ca7088c0
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485 return locks.get(i - locals.length - stack.length); |
3558ca7088c0
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486 } |
3558ca7088c0
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parents:
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|
487 } |
3558ca7088c0
FrameState and Graphviz changes:
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changeset
|
488 |
2763
5e8a69041cd7
Model phi inputs as direct inputs in the graph instead of referring to the framestates of the predecessors.
Thomas Wuerthinger <thomas@wuerthinger.net>
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2731
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|
489 @Override |
5e8a69041cd7
Model phi inputs as direct inputs in the graph instead of referring to the framestates of the predecessors.
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|
490 public void setValueAt(int i, Value v) { |
5e8a69041cd7
Model phi inputs as direct inputs in the graph instead of referring to the framestates of the predecessors.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2731
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changeset
|
491 if (i < locals.length) { |
5e8a69041cd7
Model phi inputs as direct inputs in the graph instead of referring to the framestates of the predecessors.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2731
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|
492 locals[i] = v; |
5e8a69041cd7
Model phi inputs as direct inputs in the graph instead of referring to the framestates of the predecessors.
Thomas Wuerthinger <thomas@wuerthinger.net>
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2731
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|
493 } else if (i < locals.length + stackIndex) { |
5e8a69041cd7
Model phi inputs as direct inputs in the graph instead of referring to the framestates of the predecessors.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2731
diff
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|
494 stack[i - locals.length] = v; |
5e8a69041cd7
Model phi inputs as direct inputs in the graph instead of referring to the framestates of the predecessors.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2731
diff
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|
495 } else { |
5e8a69041cd7
Model phi inputs as direct inputs in the graph instead of referring to the framestates of the predecessors.
Thomas Wuerthinger <thomas@wuerthinger.net>
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2731
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|
496 locks.set(i - locals.length - stack.length, v); |
5e8a69041cd7
Model phi inputs as direct inputs in the graph instead of referring to the framestates of the predecessors.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2731
diff
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|
497 } |
5e8a69041cd7
Model phi inputs as direct inputs in the graph instead of referring to the framestates of the predecessors.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2731
diff
changeset
|
498 } |
5e8a69041cd7
Model phi inputs as direct inputs in the graph instead of referring to the framestates of the predecessors.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2731
diff
changeset
|
499 |
2840
75e0d39833a0
new CompilerGraph, create only one Return and one Unwind per CompilerGraph
Lukas Stadler <lukas.stadler@jku.at>
parents:
2834
diff
changeset
|
500 @Override |
75e0d39833a0
new CompilerGraph, create only one Return and one Unwind per CompilerGraph
Lukas Stadler <lukas.stadler@jku.at>
parents:
2834
diff
changeset
|
501 public Value outerFrameState() { |
75e0d39833a0
new CompilerGraph, create only one Return and one Unwind per CompilerGraph
Lukas Stadler <lukas.stadler@jku.at>
parents:
2834
diff
changeset
|
502 return null; |
75e0d39833a0
new CompilerGraph, create only one Return and one Unwind per CompilerGraph
Lukas Stadler <lukas.stadler@jku.at>
parents:
2834
diff
changeset
|
503 } |
2611
bd235cb4375a
FrameState cleanup: split into FrameStateBuilder and fixed-size FrameState, removed MutableFrameState
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff
changeset
|
504 } |