Mercurial > hg > truffle

annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/calc/CompareNode.java @ 5402:80127e4a1742

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
remove Condition.OF and Condition.NOF
author Lukas Stadler <lukas.stadler@jku.at>
date Tue, 15 May 2012 14:22:01 +0200
parents 0ebd9cfdc11f
children 0364a2a874b8
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1 /*
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2 * Copyright (c) 2011, 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.oracle.graal.nodes.calc;
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24
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25 import com.oracle.max.cri.ci.*;
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26 import com.oracle.max.cri.ri.*;
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27 import com.oracle.graal.nodes.*;
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28 import com.oracle.graal.nodes.spi.*;
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29 import com.oracle.graal.nodes.spi.types.*;
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30 import com.oracle.graal.nodes.type.*;
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31
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32 /* TODO (thomaswue/gdub) For high-level optimization purpose the compare node should be a boolean *value* (it is currently only a helper node)
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33 * But in the back-end the comparison should not always be materialized (for example in x86 the comparison result will not be in a register but in a flag)
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34 *
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35 * Compare should probably be made a value (so that it can be canonicalized for example) and in later stages some Compare usage should be transformed
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36 * into variants that do not materialize the value (CompareIf, CompareGuard...)
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37 */
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38 public final class CompareNode extends BooleanNode implements Canonicalizable, LIRLowerable, ConditionalTypeFeedbackProvider, TypeCanonicalizable {
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39
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40 @Input private ValueNode x;
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41 @Input private ValueNode y;
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42
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43 private final Condition condition;
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44 private final boolean unorderedIsTrue;
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45
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46 public ValueNode x() {
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47 return x;
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48 }
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49
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50 public ValueNode y() {
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51 return y;
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52 }
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53
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54 /**
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55 * Constructs a new Compare instruction.
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56 *
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57 * @param x the instruction producing the first input to the instruction
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58 * @param condition the condition (comparison operation)
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59 * @param y the instruction that produces the second input to this instruction
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60 * @param graph
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61 */
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62 public CompareNode(ValueNode x, Condition condition, ValueNode y) {
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63 this(x, condition, false, y);
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64 }
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65
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66 /**
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67 * Constructs a new Compare instruction.
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68 *
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69 * @param x the instruction producing the first input to the instruction
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70 * @param condition the condition (comparison operation)
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71 * @param y the instruction that produces the second input to this instruction
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72 * @param graph
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73 */
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74 public CompareNode(ValueNode x, Condition condition, boolean unorderedIsTrue, ValueNode y) {
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75 super(StampFactory.illegal());
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76 assert (x == null && y == null) || x.kind() == y.kind();
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77 this.condition = condition;
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78 this.unorderedIsTrue = unorderedIsTrue;
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79 this.x = x;
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80 this.y = y;
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81 }
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82
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83 /**
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84 * Gets the condition (comparison operation) for this instruction.
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85 *
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86 * @return the condition
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87 */
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88 public Condition condition() {
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89 return condition;
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90 }
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91
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92 /**
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93 * Checks whether unordered inputs mean true or false.
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94 *
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95 * @return {@code true} if unordered inputs produce true
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96 */
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97 public boolean unorderedIsTrue() {
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98 return unorderedIsTrue;
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99 }
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100
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101 @Override
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102 public BooleanNode negate() {
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103 return graph().unique(new CompareNode(x(), condition.negate(), !unorderedIsTrue, y()));
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104 }
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105
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106 @Override
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107 public void generate(LIRGeneratorTool gen) {
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108 }
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109
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110 @Override
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111 public String toString(Verbosity verbosity) {
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112 if (verbosity == Verbosity.Name) {
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113 return super.toString(Verbosity.Name) + " " + condition.operator;
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114 } else {
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115 return super.toString(verbosity);
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116 }
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117 }
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118
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119 private ValueNode optimizeMaterialize(CiConstant constant, MaterializeNode materializeNode, RiRuntime runtime) {
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120 CiConstant trueConstant = materializeNode.trueValue().asConstant();
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121 CiConstant falseConstant = materializeNode.falseValue().asConstant();
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122
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123 if (falseConstant != null && trueConstant != null) {
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124 Boolean trueResult = condition().foldCondition(trueConstant, constant, runtime, unorderedIsTrue());
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125 Boolean falseResult = condition().foldCondition(falseConstant, constant, runtime, unorderedIsTrue());
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126
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127 if (trueResult != null && falseResult != null) {
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128 boolean trueUnboxedResult = trueResult;
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129 boolean falseUnboxedResult = falseResult;
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130 if (trueUnboxedResult == falseUnboxedResult) {
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131 return ConstantNode.forBoolean(trueUnboxedResult, graph());
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132 } else {
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133 if (trueUnboxedResult) {
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134 assert falseUnboxedResult == false;
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135 return materializeNode.condition();
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136 } else {
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137 assert falseUnboxedResult == true;
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138 return materializeNode.condition().negate();
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139
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parents:
diff changeset
140 }
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parents:
diff changeset
141 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
142 }
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parents:
diff changeset
143 }
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parents:
diff changeset
144 return this;
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parents:
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145 }
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parents:
diff changeset
146
4309
4a609a685fa4 changes to Node structures:
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diff changeset
147 private ValueNode optimizeNormalizeCmp(CiConstant constant, NormalizeCompareNode normalizeNode) {
3733
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148 if (constant.kind == CiKind.Int && constant.asInt() == 0) {
4142
bc8527f3071c Adjust code base to new level of warnings.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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diff changeset
149 Condition cond = condition();
bc8527f3071c Adjust code base to new level of warnings.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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diff changeset
150 boolean isLess = cond == Condition.LE || cond == Condition.LT || cond == Condition.BE || cond == Condition.BT;
bc8527f3071c Adjust code base to new level of warnings.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 3733
diff changeset
151 boolean canonUnorderedIsTrue = cond != Condition.EQ && (cond == Condition.NE || !(isLess ^ normalizeNode.isUnorderedLess));
bc8527f3071c Adjust code base to new level of warnings.
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diff changeset
152 CompareNode result = graph().unique(new CompareNode(normalizeNode.x(), cond, canonUnorderedIsTrue, normalizeNode.y()));
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153 return result;
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parents:
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154 }
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parents:
diff changeset
155 return this;
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parents:
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156 }
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157
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parents:
diff changeset
158 @Override
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diff changeset
159 public ValueNode canonical(CanonicalizerTool tool) {
3733
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diff changeset
160 if (x().isConstant() && !y().isConstant()) { // move constants to the left (y)
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parents:
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161 return graph().unique(new CompareNode(y(), condition.mirror(), unorderedIsTrue(), x()));
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162 } else if (x().isConstant() && y().isConstant()) {
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parents:
diff changeset
163 CiConstant constX = x().asConstant();
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parents:
diff changeset
164 CiConstant constY = y().asConstant();
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parents:
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165 Boolean result = condition().foldCondition(constX, constY, tool.runtime(), unorderedIsTrue());
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166 if (result != null) {
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167 return ConstantNode.forBoolean(result, graph());
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168 }
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169 }
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parents:
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170
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parents:
diff changeset
171 if (y().isConstant()) {
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parents:
diff changeset
172 if (x() instanceof MaterializeNode) {
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parents:
diff changeset
173 return optimizeMaterialize(y().asConstant(), (MaterializeNode) x(), tool.runtime());
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parents:
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174 } else if (x() instanceof NormalizeCompareNode) {
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parents:
diff changeset
175 return optimizeNormalizeCmp(y().asConstant(), (NormalizeCompareNode) x());
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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176 }
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parents:
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177 }
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parents:
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178
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parents:
diff changeset
179 if (x() == y() && x().kind() != CiKind.Float && x().kind() != CiKind.Double) {
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parents:
diff changeset
180 return ConstantNode.forBoolean(condition().check(1, 1), graph());
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parents:
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181 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
182 if ((condition == Condition.NE || condition == Condition.EQ) && x().kind() == CiKind.Object) {
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parents:
diff changeset
183 ValueNode object = null;
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
184 if (x().isNullConstant()) {
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
185 object = y();
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
186 } else if (y().isNullConstant()) {
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parents:
diff changeset
187 object = x();
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
188 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
189 if (object != null) {
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parents:
diff changeset
190 return graph().unique(new NullCheckNode(object, condition == Condition.EQ));
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parents:
diff changeset
191 } else {
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
192 Stamp xStamp = x.stamp();
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
193 Stamp yStamp = y.stamp();
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
194 if (xStamp.alwaysDistinct(yStamp)) {
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parents:
diff changeset
195 return ConstantNode.forBoolean(condition == Condition.NE, graph());
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parents:
diff changeset
196 }
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parents:
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197 }
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parents:
diff changeset
198 }
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parents:
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199 return this;
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parents:
diff changeset
200 }
5083
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diff changeset
201
1093243c09ad experimental type storage/query infrastructure, part 3:
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diff changeset
202 @Override
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parents: 5061
diff changeset
203 public void typeFeedback(TypeFeedbackTool tool) {
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
204 CiKind kind = x().kind();
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
205 assert y().kind() == kind;
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
206 if (kind == CiKind.Object) {
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
207 assert condition == Condition.EQ || condition == Condition.NE;
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
208 if (y().isConstant() && !x().isConstant()) {
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
209 tool.addObject(x()).constantBound(condition, y().asConstant());
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
210 } else if (x().isConstant() && !y().isConstant()) {
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
211 tool.addObject(y()).constantBound(condition.mirror(), x().asConstant());
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
212 } else if (!x().isConstant() && !y.isConstant()) {
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
213 tool.addObject(x()).valueBound(condition, y());
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
214 tool.addObject(y()).valueBound(condition.mirror(), x());
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
215 } else {
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
216 // both are constant, this should be canonicalized...
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
217 }
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
218 } else if (kind == CiKind.Int || kind == CiKind.Long) {
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
219 if (y().isConstant() && !x().isConstant()) {
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
220 tool.addScalar(x()).constantBound(condition, y().asConstant());
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
221 } else if (x().isConstant() && !y().isConstant()) {
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
222 tool.addScalar(y()).constantBound(condition.mirror(), x().asConstant());
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
223 } else if (!x().isConstant() && !y.isConstant()) {
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
224 tool.addScalar(x()).valueBound(condition, y(), tool.queryScalar(y()));
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
225 tool.addScalar(y()).valueBound(condition.mirror(), x(), tool.queryScalar(x()));
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
226 } else {
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
227 // both are constant, this should be canonicalized...
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
228 }
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
229 } else if (kind == CiKind.Float || kind == CiKind.Double) {
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
230 // nothing yet...
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
231 }
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
232 }
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
233
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
234 @Override
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
235 public Result canonical(TypeFeedbackTool tool) {
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
236 CiKind kind = x().kind();
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
237 if (kind == CiKind.Int || kind == CiKind.Long) {
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
238 ScalarTypeQuery queryX = tool.queryScalar(x());
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
239 if (y().isConstant() && !x().isConstant()) {
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
240 if (queryX.constantBound(condition, y().asConstant())) {
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
241 return new Result(ConstantNode.forBoolean(true, graph()), queryX);
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
242 } else if (queryX.constantBound(condition.negate(), y().asConstant())) {
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
243 return new Result(ConstantNode.forBoolean(false, graph()), queryX);
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
244 }
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
245 } else {
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
246 ScalarTypeQuery queryY = tool.queryScalar(y());
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
247 if (x().isConstant() && !y().isConstant()) {
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
248 if (queryY.constantBound(condition.mirror(), x().asConstant())) {
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
249 return new Result(ConstantNode.forBoolean(true, graph()), queryY);
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
250 } else if (queryY.constantBound(condition.mirror().negate(), x().asConstant())) {
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
251 return new Result(ConstantNode.forBoolean(false, graph()), queryY);
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
252 }
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
253 } else if (!x().isConstant() && !y.isConstant()) {
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
254 if (condition == Condition.BT || condition == Condition.BE) {
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
255 if (queryY.constantBound(Condition.GE, new CiConstant(kind, 0))) {
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
256 if (queryX.constantBound(Condition.GE, new CiConstant(kind, 0))) {
1093243c09ad experimental type storage/query infrastructure, part 3:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5061
diff changeset
257 if (queryX.valueBound(condition == Condition.BT ? Condition.LT : Condition.LE, y())) {
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
258 return new Result(ConstantNode.forBoolean(true, graph()), queryX, queryY);
1093243c09ad experimental type storage/query infrastructure, part 3:
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diff changeset
259 }
1093243c09ad experimental type storage/query infrastructure, part 3:
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diff changeset
260 }
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
261 }
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
262 }
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
263
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
264 if (queryX.valueBound(condition, y())) {
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
265 return new Result(ConstantNode.forBoolean(true, graph()), queryX);
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
266 } else if (queryX.valueBound(condition.negate(), y())) {
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
267 return new Result(ConstantNode.forBoolean(false, graph()), queryX);
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
268 }
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
269 } else {
1093243c09ad experimental type storage/query infrastructure, part 3:
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parents: 5061
diff changeset
270 // both are constant, this should be canonicalized...
1093243c09ad experimental type storage/query infrastructure, part 3:
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271 }
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272 }
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273 } else if (kind == CiKind.Object) {
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274 assert condition == Condition.EQ || condition == Condition.NE;
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275 ObjectTypeQuery queryX = tool.queryObject(x());
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276 if (y().isConstant() && !x().isConstant()) {
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277 if (queryX.constantBound(condition, y().asConstant())) {
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278 return new Result(ConstantNode.forBoolean(true, graph()), queryX);
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279 } else if (queryX.constantBound(condition.negate(), y().asConstant())) {
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280 return new Result(ConstantNode.forBoolean(false, graph()), queryX);
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281 }
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282 } else {
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283 ObjectTypeQuery queryY = tool.queryObject(y());
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284 if (x().isConstant() && !y().isConstant()) {
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285 if (queryY.constantBound(condition.mirror(), x().asConstant())) {
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286 return new Result(ConstantNode.forBoolean(true, graph()), queryY);
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287 } else if (queryY.constantBound(condition.mirror().negate(), x().asConstant())) {
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288 return new Result(ConstantNode.forBoolean(false, graph()), queryY);
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289 }
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290 } else if (!x().isConstant() && !y.isConstant()) {
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291 if (queryX.valueBound(condition, y())) {
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292 return new Result(ConstantNode.forBoolean(true, graph()), queryX);
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293 } else if (queryX.valueBound(condition.negate(), y())) {
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294 return new Result(ConstantNode.forBoolean(false, graph()), queryX);
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295 }
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296 } else {
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297 // both are constant, this should be canonicalized...
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298 }
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299 }
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300 }
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301 return null;
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302 }
3733
e233f5660da4 Added Java files from Maxine project.
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303 }