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annotate graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/DominatorConditionalEliminationPhase.java @ 22872:ad106dd2000c

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Fix missing transfer of speculation when recreating guards/deops All fields need to be transfered (reason, action and speculation). When we drop the speculation object we risk infinite deopts.
author Gilles Duboscq <gilles.m.duboscq@oracle.com>
date Tue, 20 Oct 2015 15:55:40 +0200
parents 615f3bbbb174
children 2fe4e3511d97
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2 * Copyright (c) 2015, 2015, 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
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
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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.phases.common;
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24
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25 import static jdk.vm.ci.meta.DeoptimizationAction.InvalidateReprofile;
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26 import static jdk.vm.ci.meta.DeoptimizationReason.UnreachedCode;
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27
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28 import java.util.ArrayDeque;
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29 import java.util.ArrayList;
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30 import java.util.Collections;
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31 import java.util.Deque;
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32 import java.util.Iterator;
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33 import java.util.List;
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34 import java.util.function.Function;
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35
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36 import jdk.vm.ci.meta.JavaConstant;
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37 import jdk.vm.ci.meta.TriState;
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38
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39 import com.oracle.graal.compiler.common.cfg.AbstractControlFlowGraph;
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40 import com.oracle.graal.compiler.common.cfg.BlockMap;
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41 import com.oracle.graal.compiler.common.type.Stamp;
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42 import com.oracle.graal.compiler.common.type.StampFactory;
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43 import com.oracle.graal.debug.Debug;
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44 import com.oracle.graal.debug.DebugMetric;
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45 import com.oracle.graal.graph.Node;
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46 import com.oracle.graal.graph.NodeMap;
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47 import com.oracle.graal.nodeinfo.InputType;
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48 import com.oracle.graal.nodes.AbstractBeginNode;
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49 import com.oracle.graal.nodes.BeginNode;
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50 import com.oracle.graal.nodes.BinaryOpLogicNode;
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51 import com.oracle.graal.nodes.ConditionAnchorNode;
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52 import com.oracle.graal.nodes.DeoptimizeNode;
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53 import com.oracle.graal.nodes.FixedGuardNode;
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54 import com.oracle.graal.nodes.FixedNode;
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55 import com.oracle.graal.nodes.GuardNode;
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56 import com.oracle.graal.nodes.GuardProxyNode;
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57 import com.oracle.graal.nodes.IfNode;
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58 import com.oracle.graal.nodes.LogicNode;
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59 import com.oracle.graal.nodes.LoopExitNode;
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60 import com.oracle.graal.nodes.PiNode;
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61 import com.oracle.graal.nodes.ShortCircuitOrNode;
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62 import com.oracle.graal.nodes.StructuredGraph;
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63 import com.oracle.graal.nodes.UnaryOpLogicNode;
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64 import com.oracle.graal.nodes.ValueNode;
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65 import com.oracle.graal.nodes.cfg.Block;
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66 import com.oracle.graal.nodes.cfg.ControlFlowGraph;
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67 import com.oracle.graal.nodes.extended.GuardingNode;
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68 import com.oracle.graal.nodes.extended.IntegerSwitchNode;
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69 import com.oracle.graal.nodes.extended.LoadHubNode;
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70 import com.oracle.graal.nodes.extended.ValueAnchorNode;
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71 import com.oracle.graal.nodes.java.CheckCastNode;
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72 import com.oracle.graal.nodes.java.TypeSwitchNode;
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73 import com.oracle.graal.nodes.util.GraphUtil;
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74 import com.oracle.graal.phases.Phase;
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75 import com.oracle.graal.phases.common.LoweringPhase.Frame;
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76 import com.oracle.graal.phases.schedule.SchedulePhase;
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77
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78 public class DominatorConditionalEliminationPhase extends Phase {
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79
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80 private static final DebugMetric metricStampsRegistered = Debug.metric("StampsRegistered");
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81 private static final DebugMetric metricStampsFound = Debug.metric("StampsFound");
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82 private final boolean fullSchedule;
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83
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84 public DominatorConditionalEliminationPhase(boolean fullSchedule) {
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85 this.fullSchedule = fullSchedule;
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86 }
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87
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88 private static final class InfoElement {
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89 private final Stamp stamp;
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90 private final ValueNode guard;
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91
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92 public InfoElement(Stamp stamp, ValueNode guard) {
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93 this.stamp = stamp;
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94 this.guard = guard;
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95 }
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96
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97 public Stamp getStamp() {
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98 return stamp;
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99 }
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100
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101 public ValueNode getGuard() {
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102 return guard;
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103 }
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104
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105 @Override
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106 public String toString() {
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107 return stamp + " -> " + guard;
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108 }
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109 }
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110
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111 private static final class Info {
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112 private final ArrayList<InfoElement> infos;
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113
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114 public Info() {
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115 infos = new ArrayList<>();
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116 }
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117
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118 public Iterable<InfoElement> getElements() {
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119 return infos;
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120 }
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121
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122 public void pushElement(InfoElement element) {
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123 infos.add(element);
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124 }
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125
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126 public void popElement() {
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127 infos.remove(infos.size() - 1);
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128 }
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129 }
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130
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131 @Override
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132 protected void run(StructuredGraph graph) {
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133
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134 Function<Block, Iterable<? extends Node>> blockToNodes;
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135 Function<Node, Block> nodeToBlock;
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136 Block startBlock;
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137
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138 if (fullSchedule) {
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139 SchedulePhase schedule = new SchedulePhase(SchedulePhase.SchedulingStrategy.EARLIEST);
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140 schedule.apply(graph);
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141 ControlFlowGraph cfg = schedule.getCFG();
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142 cfg.computePostdominators();
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143 blockToNodes = b -> schedule.getBlockToNodesMap().get(b);
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144 nodeToBlock = n -> schedule.getNodeToBlockMap().get(n);
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145 startBlock = cfg.getStartBlock();
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146 } else {
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147 ControlFlowGraph cfg = ControlFlowGraph.compute(graph, true, true, true, true);
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148 cfg.computePostdominators();
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149 BlockMap<List<FixedNode>> nodes = new BlockMap<>(cfg);
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150 for (Block b : cfg.getBlocks()) {
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151 ArrayList<FixedNode> curNodes = new ArrayList<>();
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152 for (FixedNode node : b.getNodes()) {
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153 if (node instanceof AbstractBeginNode || node instanceof FixedGuardNode || node instanceof CheckCastNode || node instanceof ConditionAnchorNode || node instanceof IfNode) {
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154 curNodes.add(node);
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155 }
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156 }
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157 nodes.put(b, curNodes);
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158 }
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159 blockToNodes = b -> nodes.get(b);
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160 nodeToBlock = n -> cfg.blockFor(n);
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161 startBlock = cfg.getStartBlock();
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162 }
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163
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164 Instance instance = new Instance(graph, blockToNodes, nodeToBlock);
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165 instance.processBlock(startBlock);
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166 }
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167
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168 private static class Instance {
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169
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170 private NodeMap<Info> map;
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171 private Deque<LoopExitNode> loopExits;
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172 private final Function<Block, Iterable<? extends Node>> blockToNodes;
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173 private final Function<Node, Block> nodeToBlock;
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174
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175 public Instance(StructuredGraph graph, Function<Block, Iterable<? extends Node>> blockToNodes, Function<Node, Block> nodeToBlock) {
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176 map = graph.createNodeMap();
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177 loopExits = new ArrayDeque<>();
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178 this.blockToNodes = blockToNodes;
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179 this.nodeToBlock = nodeToBlock;
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180 }
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181
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182 public void processBlock(Block startBlock) {
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183 LoweringPhase.processBlock(new InstanceFrame(startBlock, null));
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184 }
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185
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186 public class InstanceFrame extends LoweringPhase.Frame<InstanceFrame> {
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187 List<Runnable> undoOperations = new ArrayList<>();
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188
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189 public InstanceFrame(Block block, InstanceFrame parent) {
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190 super(block, parent);
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191 }
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192
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193 @Override
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194 public Frame<?> enter(Block b) {
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195 return new InstanceFrame(b, this);
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196 }
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197
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198 @Override
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199 public void preprocess() {
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200 Instance.this.preprocess(block, undoOperations);
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201 }
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202
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203 @Override
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204 public void postprocess() {
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205 Instance.postprocess(undoOperations);
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206 }
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207 }
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208
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209 private static void postprocess(List<Runnable> undoOperations) {
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210 for (Runnable r : undoOperations) {
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211 r.run();
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212 }
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213 }
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214
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215 private void preprocess(Block block, List<Runnable> undoOperations) {
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216 AbstractBeginNode beginNode = block.getBeginNode();
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217 if (beginNode instanceof LoopExitNode && beginNode.isAlive()) {
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218 LoopExitNode loopExitNode = (LoopExitNode) beginNode;
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219 this.loopExits.push(loopExitNode);
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220 undoOperations.add(() -> loopExits.pop());
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221 } else if (block.getDominator() != null &&
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222 (block.getDominator().getLoopDepth() > block.getLoopDepth() || (block.getDominator().getLoopDepth() == block.getLoopDepth() && block.getDominator().getLoop() != block.getLoop()))) {
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223 // We are exiting the loop, but there is not a single loop exit block along our
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224 // dominator tree (e.g., we are a merge of two loop exits).
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225 final NodeMap<Info> oldMap = map;
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226 final Deque<LoopExitNode> oldLoopExits = loopExits;
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227 map = map.graph().createNodeMap();
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228 loopExits = new ArrayDeque<>();
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229 undoOperations.add(() -> {
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230 map = oldMap;
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231 loopExits = oldLoopExits;
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232 });
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233 }
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234 for (Node n : blockToNodes.apply(block)) {
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235 if (n.isAlive()) {
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236 processNode(n, undoOperations);
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237 }
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238 }
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239 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
240
19723
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
241 private void processNode(Node node, List<Runnable> undoOperations) {
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
242 if (node instanceof AbstractBeginNode) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
243 processAbstractBegin((AbstractBeginNode) node, undoOperations);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
244 } else if (node instanceof FixedGuardNode) {
19723
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
245 processFixedGuard((FixedGuardNode) node, undoOperations);
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
246 } else if (node instanceof GuardNode) {
19723
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
247 processGuard((GuardNode) node, undoOperations);
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
248 } else if (node instanceof CheckCastNode) {
19723
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
249 processCheckCast((CheckCastNode) node);
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
250 } else if (node instanceof ConditionAnchorNode) {
19723
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
251 processConditionAnchor((ConditionAnchorNode) node);
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
252 } else if (node instanceof IfNode) {
19762
223e1d7b15b7 Make conditional elimination more robust wrt deleted begin nodes.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19731
diff changeset
253 processIf((IfNode) node, undoOperations);
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
254 } else {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
255 return;
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
256 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
257 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
258
19723
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
259 private void processCheckCast(CheckCastNode node) {
21037
3fc34aafea30 Conditional elimination: check if conditional has known value already
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21036
diff changeset
260 for (InfoElement infoElement : getInfoElements(node.object())) {
3fc34aafea30 Conditional elimination: check if conditional has known value already
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21036
diff changeset
261 TriState result = node.tryFold(infoElement.getStamp());
3fc34aafea30 Conditional elimination: check if conditional has known value already
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21036
diff changeset
262 if (result.isKnown()) {
21039
13a255e29236 Conditional Elimination: processCheckCast should return as soon as the checkcast has been transformed
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21038
diff changeset
263 if (rewireGuards(infoElement.getGuard(), result.toBoolean(), (guard, checkCastResult) -> {
21037
3fc34aafea30 Conditional elimination: check if conditional has known value already
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21036
diff changeset
264 if (checkCastResult) {
3fc34aafea30 Conditional elimination: check if conditional has known value already
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21036
diff changeset
265 PiNode piNode = node.graph().unique(new PiNode(node.object(), node.stamp(), guard));
3fc34aafea30 Conditional elimination: check if conditional has known value already
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21036
diff changeset
266 node.replaceAtUsages(piNode);
3fc34aafea30 Conditional elimination: check if conditional has known value already
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21036
diff changeset
267 GraphUtil.unlinkFixedNode(node);
3fc34aafea30 Conditional elimination: check if conditional has known value already
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21036
diff changeset
268 node.safeDelete();
3fc34aafea30 Conditional elimination: check if conditional has known value already
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21036
diff changeset
269 } else {
3fc34aafea30 Conditional elimination: check if conditional has known value already
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21036
diff changeset
270 DeoptimizeNode deopt = node.graph().add(new DeoptimizeNode(InvalidateReprofile, UnreachedCode));
3fc34aafea30 Conditional elimination: check if conditional has known value already
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21036
diff changeset
271 node.replaceAtPredecessor(deopt);
3fc34aafea30 Conditional elimination: check if conditional has known value already
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21036
diff changeset
272 GraphUtil.killCFG(node);
3fc34aafea30 Conditional elimination: check if conditional has known value already
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21036
diff changeset
273 }
21038
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
274 return true;
21039
13a255e29236 Conditional Elimination: processCheckCast should return as soon as the checkcast has been transformed
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21038
diff changeset
275 })) {
13a255e29236 Conditional Elimination: processCheckCast should return as soon as the checkcast has been transformed
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21038
diff changeset
276 return;
13a255e29236 Conditional Elimination: processCheckCast should return as soon as the checkcast has been transformed
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21038
diff changeset
277 }
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
278 }
21037
3fc34aafea30 Conditional elimination: check if conditional has known value already
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21036
diff changeset
279 }
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
280 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
281
19762
223e1d7b15b7 Make conditional elimination more robust wrt deleted begin nodes.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19731
diff changeset
282 private void processIf(IfNode node, List<Runnable> undoOperations) {
19723
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
283 tryProofCondition(node.condition(), (guard, result) -> {
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
284 AbstractBeginNode survivingSuccessor = node.getSuccessor(result);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
285 survivingSuccessor.replaceAtUsages(InputType.Guard, guard);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
286 survivingSuccessor.replaceAtPredecessor(null);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
287 node.replaceAtPredecessor(survivingSuccessor);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
288 GraphUtil.killCFG(node);
21585
453284d62d64 Fix a bug in the dominator based conditional elimination.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 21556
diff changeset
289 if (survivingSuccessor instanceof BeginNode) {
453284d62d64 Fix a bug in the dominator based conditional elimination.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 21556
diff changeset
290 undoOperations.add(() -> {
453284d62d64 Fix a bug in the dominator based conditional elimination.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 21556
diff changeset
291 if (survivingSuccessor.isAlive()) {
453284d62d64 Fix a bug in the dominator based conditional elimination.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 21556
diff changeset
292 ((BeginNode) survivingSuccessor).trySimplify();
453284d62d64 Fix a bug in the dominator based conditional elimination.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 21556
diff changeset
293 }
453284d62d64 Fix a bug in the dominator based conditional elimination.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 21556
diff changeset
294 });
19728
4df907480030 Simplify begin node immediately after removing if node.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19724
diff changeset
295 }
21038
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
296 return true;
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
297 });
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
298 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
299
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
300 private void registerNewCondition(LogicNode condition, boolean negated, ValueNode guard, List<Runnable> undoOperations) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
301 if (condition instanceof UnaryOpLogicNode) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
302 UnaryOpLogicNode unaryLogicNode = (UnaryOpLogicNode) condition;
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
303 Stamp newStamp = unaryLogicNode.getSucceedingStampForValue(negated);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
304 registerNewStamp(unaryLogicNode.getValue(), newStamp, guard, undoOperations);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
305 } else if (condition instanceof BinaryOpLogicNode) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
306 BinaryOpLogicNode binaryOpLogicNode = (BinaryOpLogicNode) condition;
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
307 ValueNode x = binaryOpLogicNode.getX();
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
308 if (!x.isConstant()) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
309 Stamp newStampX = binaryOpLogicNode.getSucceedingStampForX(negated);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
310 registerNewStamp(x, newStampX, guard, undoOperations);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
311 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
312
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
313 ValueNode y = binaryOpLogicNode.getY();
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
314 if (!y.isConstant()) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
315 Stamp newStampY = binaryOpLogicNode.getSucceedingStampForY(negated);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
316 registerNewStamp(y, newStampY, guard, undoOperations);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
317 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
318 }
21036
953666b61a23 Always register stamps for the condition itself
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 20934
diff changeset
319 registerCondition(condition, negated, guard, undoOperations);
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
320 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
321
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
322 private void registerCondition(LogicNode condition, boolean negated, ValueNode guard, List<Runnable> undoOperations) {
21160
0c03a7b7081f fix in DominatorConditionalEliminationPhase for If/ShortCircuitOr with xNegated=true
Lukas Stadler <lukas.stadler@oracle.com>
parents: 21150
diff changeset
323 registerNewStamp(condition, negated ? StampFactory.contradiction() : StampFactory.tautology(), guard, undoOperations);
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
324 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
325
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
326 private Iterable<InfoElement> getInfoElements(ValueNode proxiedValue) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
327 ValueNode value = GraphUtil.unproxify(proxiedValue);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
328 Info info = map.get(value);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
329 if (info == null) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
330 return Collections.emptyList();
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
331 } else {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
332 return info.getElements();
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
333 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
334 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
335
21038
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
336 private boolean rewireGuards(ValueNode guard, boolean result, GuardRewirer rewireGuardFunction) {
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
337 assert guard instanceof GuardingNode;
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
338 metricStampsFound.increment();
19723
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
339 ValueNode proxiedGuard = proxyGuard(guard);
21038
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
340 return rewireGuardFunction.rewire(proxiedGuard, result);
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
341 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
342
19723
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
343 private ValueNode proxyGuard(ValueNode guard) {
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
344 ValueNode proxiedGuard = guard;
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
345 if (!this.loopExits.isEmpty()) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
346 while (proxiedGuard instanceof GuardProxyNode) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
347 proxiedGuard = ((GuardProxyNode) proxiedGuard).value();
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
348 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
349 Block guardBlock = nodeToBlock.apply(proxiedGuard);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
350 assert guardBlock != null;
20040
f137f1974f60 removed uses of StringBuffer, Hashtable and Stack
Doug Simon <doug.simon@oracle.com>
parents: 19950
diff changeset
351 for (Iterator<LoopExitNode> iter = loopExits.descendingIterator(); iter.hasNext();) {
f137f1974f60 removed uses of StringBuffer, Hashtable and Stack
Doug Simon <doug.simon@oracle.com>
parents: 19950
diff changeset
352 LoopExitNode loopExitNode = iter.next();
19723
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
353 Block loopExitBlock = nodeToBlock.apply(loopExitNode);
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
354 if (guardBlock != loopExitBlock && AbstractControlFlowGraph.dominates(guardBlock, loopExitBlock)) {
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
355 Block loopBeginBlock = nodeToBlock.apply(loopExitNode.loopBegin());
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
356 if (!AbstractControlFlowGraph.dominates(guardBlock, loopBeginBlock) || guardBlock == loopBeginBlock) {
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
357 proxiedGuard = proxiedGuard.graph().unique(new GuardProxyNode((GuardingNode) proxiedGuard, loopExitNode));
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
358 }
19719
055a095424a7 Fixes for new conditional elimination phase. Make it default.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19716
diff changeset
359 }
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
360 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
361 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
362 return proxiedGuard;
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
363 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
364
21038
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
365 @FunctionalInterface
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
366 private interface GuardRewirer {
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
367 /**
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
368 * Called if the condition could be proven to have a constant value ({@code result})
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
369 * under {@code guard}.
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
370 *
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
371 * Return whether a transformation could be applied.
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
372 */
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
373 boolean rewire(ValueNode guard, boolean result);
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
374 }
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
375
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
376 private boolean tryProofCondition(LogicNode node, GuardRewirer rewireGuardFunction) {
21037
3fc34aafea30 Conditional elimination: check if conditional has known value already
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21036
diff changeset
377 for (InfoElement infoElement : getInfoElements(node)) {
3fc34aafea30 Conditional elimination: check if conditional has known value already
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21036
diff changeset
378 Stamp stamp = infoElement.getStamp();
3fc34aafea30 Conditional elimination: check if conditional has known value already
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21036
diff changeset
379 JavaConstant constant = (JavaConstant) stamp.asConstant();
3fc34aafea30 Conditional elimination: check if conditional has known value already
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21036
diff changeset
380 if (constant != null) {
3fc34aafea30 Conditional elimination: check if conditional has known value already
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21036
diff changeset
381 return rewireGuards(infoElement.getGuard(), constant.asBoolean(), rewireGuardFunction);
3fc34aafea30 Conditional elimination: check if conditional has known value already
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21036
diff changeset
382 }
3fc34aafea30 Conditional elimination: check if conditional has known value already
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21036
diff changeset
383 }
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
384 if (node instanceof UnaryOpLogicNode) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
385 UnaryOpLogicNode unaryLogicNode = (UnaryOpLogicNode) node;
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
386 ValueNode value = unaryLogicNode.getValue();
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
387 for (InfoElement infoElement : getInfoElements(value)) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
388 Stamp stamp = infoElement.getStamp();
19724
70d565f6e127 Convert API for tryFold from Boolean return value to TriState return value.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19723
diff changeset
389 TriState result = unaryLogicNode.tryFold(stamp);
70d565f6e127 Convert API for tryFold from Boolean return value to TriState return value.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19723
diff changeset
390 if (result.isKnown()) {
70d565f6e127 Convert API for tryFold from Boolean return value to TriState return value.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19723
diff changeset
391 return rewireGuards(infoElement.getGuard(), result.toBoolean(), rewireGuardFunction);
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
392 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
393 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
394 } else if (node instanceof BinaryOpLogicNode) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
395 BinaryOpLogicNode binaryOpLogicNode = (BinaryOpLogicNode) node;
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
396 for (InfoElement infoElement : getInfoElements(binaryOpLogicNode)) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
397 if (infoElement.getStamp().equals(StampFactory.contradiction())) {
19723
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
398 return rewireGuards(infoElement.getGuard(), false, rewireGuardFunction);
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
399 } else if (infoElement.getStamp().equals(StampFactory.tautology())) {
19723
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
400 return rewireGuards(infoElement.getGuard(), true, rewireGuardFunction);
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
401 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
402 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
403
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
404 ValueNode x = binaryOpLogicNode.getX();
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
405 ValueNode y = binaryOpLogicNode.getY();
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
406 for (InfoElement infoElement : getInfoElements(x)) {
19724
70d565f6e127 Convert API for tryFold from Boolean return value to TriState return value.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19723
diff changeset
407 TriState result = binaryOpLogicNode.tryFold(infoElement.getStamp(), y.stamp());
70d565f6e127 Convert API for tryFold from Boolean return value to TriState return value.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19723
diff changeset
408 if (result.isKnown()) {
70d565f6e127 Convert API for tryFold from Boolean return value to TriState return value.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19723
diff changeset
409 return rewireGuards(infoElement.getGuard(), result.toBoolean(), rewireGuardFunction);
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
410 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
411 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
412
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
413 for (InfoElement infoElement : getInfoElements(y)) {
19724
70d565f6e127 Convert API for tryFold from Boolean return value to TriState return value.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19723
diff changeset
414 TriState result = binaryOpLogicNode.tryFold(x.stamp(), infoElement.getStamp());
70d565f6e127 Convert API for tryFold from Boolean return value to TriState return value.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19723
diff changeset
415 if (result.isKnown()) {
70d565f6e127 Convert API for tryFold from Boolean return value to TriState return value.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19723
diff changeset
416 return rewireGuards(infoElement.getGuard(), result.toBoolean(), rewireGuardFunction);
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
417 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
418 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
419 } else if (node instanceof ShortCircuitOrNode) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
420 final ShortCircuitOrNode shortCircuitOrNode = (ShortCircuitOrNode) node;
19719
055a095424a7 Fixes for new conditional elimination phase. Make it default.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19716
diff changeset
421 if (this.loopExits.isEmpty()) {
21038
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
422 return tryProofCondition(shortCircuitOrNode.getX(), (guard, result) -> {
19719
055a095424a7 Fixes for new conditional elimination phase. Make it default.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19716
diff changeset
423 if (result == !shortCircuitOrNode.isXNegated()) {
21160
0c03a7b7081f fix in DominatorConditionalEliminationPhase for If/ShortCircuitOr with xNegated=true
Lukas Stadler <lukas.stadler@oracle.com>
parents: 21150
diff changeset
424 return rewireGuards(guard, true, rewireGuardFunction);
19719
055a095424a7 Fixes for new conditional elimination phase. Make it default.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19716
diff changeset
425 } else {
21038
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
426 return tryProofCondition(shortCircuitOrNode.getY(), (innerGuard, innerResult) -> {
19719
055a095424a7 Fixes for new conditional elimination phase. Make it default.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19716
diff changeset
427 if (innerGuard == guard) {
21160
0c03a7b7081f fix in DominatorConditionalEliminationPhase for If/ShortCircuitOr with xNegated=true
Lukas Stadler <lukas.stadler@oracle.com>
parents: 21150
diff changeset
428 return rewireGuards(guard, innerResult ^ shortCircuitOrNode.isYNegated(), rewireGuardFunction);
19719
055a095424a7 Fixes for new conditional elimination phase. Make it default.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19716
diff changeset
429 }
21038
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
430 return false;
19719
055a095424a7 Fixes for new conditional elimination phase. Make it default.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19716
diff changeset
431 });
055a095424a7 Fixes for new conditional elimination phase. Make it default.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19716
diff changeset
432 }
055a095424a7 Fixes for new conditional elimination phase. Make it default.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19716
diff changeset
433 });
055a095424a7 Fixes for new conditional elimination phase. Make it default.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19716
diff changeset
434 }
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
435 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
436
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
437 return false;
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
438 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
439
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
440 private void registerNewStamp(ValueNode proxiedValue, Stamp newStamp, ValueNode guard, List<Runnable> undoOperations) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
441 if (newStamp != null) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
442 ValueNode value = GraphUtil.unproxify(proxiedValue);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
443 Info info = map.get(value);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
444 if (info == null) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
445 info = new Info();
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
446 map.set(value, info);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
447 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
448 metricStampsRegistered.increment();
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
449 final Info finalInfo = info;
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
450 finalInfo.pushElement(new InfoElement(newStamp, guard));
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
451 undoOperations.add(() -> finalInfo.popElement());
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
452 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
453 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
454
19723
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
455 private void processConditionAnchor(ConditionAnchorNode node) {
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
456 tryProofCondition(node.condition(), (guard, result) -> {
19950
212566f9cd69 Dom-based ConditionalElimination: fix fliped check in processConditionAnchor
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 19762
diff changeset
457 if (result != node.isNegated()) {
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
458 node.replaceAtUsages(guard);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
459 GraphUtil.unlinkFixedNode(node);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
460 GraphUtil.killWithUnusedFloatingInputs(node);
19719
055a095424a7 Fixes for new conditional elimination phase. Make it default.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19716
diff changeset
461 } else {
055a095424a7 Fixes for new conditional elimination phase. Make it default.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19716
diff changeset
462 ValueAnchorNode valueAnchor = node.graph().add(new ValueAnchorNode(null));
055a095424a7 Fixes for new conditional elimination phase. Make it default.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19716
diff changeset
463 node.replaceAtUsages(valueAnchor);
055a095424a7 Fixes for new conditional elimination phase. Make it default.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19716
diff changeset
464 node.graph().replaceFixedWithFixed(node, valueAnchor);
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
465 }
21038
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
466 return true;
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
467 });
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
468 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
469
19723
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
470 private void processGuard(GuardNode node, List<Runnable> undoOperations) {
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
471 if (!tryProofCondition(node.condition(), (guard, result) -> {
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
472 if (result != node.isNegated()) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
473 node.replaceAndDelete(guard);
19719
055a095424a7 Fixes for new conditional elimination phase. Make it default.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19716
diff changeset
474 } else {
22872
ad106dd2000c Fix missing transfer of speculation when recreating guards/deops
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 22790
diff changeset
475 DeoptimizeNode deopt = node.graph().add(new DeoptimizeNode(node.action(), node.reason(), node.getSpeculation()));
20174
56f721367c0d conditional elimination: use begin node from guard anchor instead of node to block map
Andreas Woess <andreas.woess@oracle.com>
parents: 20040
diff changeset
476 AbstractBeginNode beginNode = (AbstractBeginNode) node.getAnchor();
19762
223e1d7b15b7 Make conditional elimination more robust wrt deleted begin nodes.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19731
diff changeset
477 FixedNode next = beginNode.next();
223e1d7b15b7 Make conditional elimination more robust wrt deleted begin nodes.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19731
diff changeset
478 beginNode.setNext(deopt);
19719
055a095424a7 Fixes for new conditional elimination phase. Make it default.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19716
diff changeset
479 GraphUtil.killCFG(next);
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
480 }
21038
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
481 return true;
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
482 })) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
483 registerNewCondition(node.condition(), node.isNegated(), node, undoOperations);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
484 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
485 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
486
19723
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
487 private void processFixedGuard(FixedGuardNode node, List<Runnable> undoOperations) {
1a9bfa2c3cc9 Reduce number of inserted guard proxies.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 19721
diff changeset
488 if (!tryProofCondition(node.condition(), (guard, result) -> {
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
489 if (result != node.isNegated()) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
490 node.replaceAtUsages(guard);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
491 GraphUtil.unlinkFixedNode(node);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
492 GraphUtil.killWithUnusedFloatingInputs(node);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
493 } else {
21898
6714387f5323 Make it possible to use a speculation in a FixedGuard
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21619
diff changeset
494 DeoptimizeNode deopt = node.graph().add(new DeoptimizeNode(node.getAction(), node.getReason(), node.getSpeculation()));
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
495 deopt.setStateBefore(node.stateBefore());
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
496 node.replaceAtPredecessor(deopt);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
497 GraphUtil.killCFG(node);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
498 }
21038
6868faf48f02 Conditional Elimination: tryProofCondition: return true if ShortCircuitOrNode could be proven
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21037
diff changeset
499 return true;
19716
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
500 })) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
501 registerNewCondition(node.condition(), node.isNegated(), node, undoOperations);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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502 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
503 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
504
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
505 private void processAbstractBegin(AbstractBeginNode beginNode, List<Runnable> undoOperations) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
506 Node predecessor = beginNode.predecessor();
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
507 if (predecessor instanceof IfNode) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
508 IfNode ifNode = (IfNode) predecessor;
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
509 boolean negated = (ifNode.falseSuccessor() == beginNode);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
510 LogicNode condition = ifNode.condition();
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
511 registerNewCondition(condition, negated, beginNode, undoOperations);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
512 } else if (predecessor instanceof TypeSwitchNode) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
513 TypeSwitchNode typeSwitch = (TypeSwitchNode) predecessor;
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
514 processTypeSwitch(beginNode, undoOperations, predecessor, typeSwitch);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
515 } else if (predecessor instanceof IntegerSwitchNode) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
516 IntegerSwitchNode integerSwitchNode = (IntegerSwitchNode) predecessor;
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
517 processIntegerSwitch(beginNode, undoOperations, predecessor, integerSwitchNode);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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518 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
519 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
520
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
521 private void processIntegerSwitch(AbstractBeginNode beginNode, List<Runnable> undoOperations, Node predecessor, IntegerSwitchNode integerSwitchNode) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
522 Stamp stamp = null;
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
523 for (int i = 0; i < integerSwitchNode.keyCount(); i++) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
524 if (integerSwitchNode.keySuccessor(i) == predecessor) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
525 if (stamp == null) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
526 stamp = StampFactory.forConstant(integerSwitchNode.keyAt(i));
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
527 } else {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
528 stamp = stamp.meet(StampFactory.forConstant(integerSwitchNode.keyAt(i)));
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
529 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
530 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
531 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
532
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
533 if (stamp != null) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
534 registerNewStamp(integerSwitchNode.value(), stamp, beginNode, undoOperations);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
535 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
536 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
537
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
538 private void processTypeSwitch(AbstractBeginNode beginNode, List<Runnable> undoOperations, Node predecessor, TypeSwitchNode typeSwitch) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
539 ValueNode hub = typeSwitch.value();
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
540 if (hub instanceof LoadHubNode) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
541 LoadHubNode loadHub = (LoadHubNode) hub;
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
542 Stamp stamp = null;
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
543 for (int i = 0; i < typeSwitch.keyCount(); i++) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
544 if (typeSwitch.keySuccessor(i) == predecessor) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
545 if (stamp == null) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
546 stamp = StampFactory.exactNonNull(typeSwitch.typeAt(i));
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
547 } else {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
548 stamp = stamp.meet(StampFactory.exactNonNull(typeSwitch.typeAt(i)));
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
549 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
550 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
551 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
552 if (stamp != null) {
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
553 registerNewStamp(loadHub.getValue(), stamp, beginNode, undoOperations);
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
554 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
555 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
556 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
557 }
2fd45bb25118 Initial version of new dominator-based conditional elimination phase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
558 }