Mercurial > hg > truffle
view graal/com.oracle.max.graal.compiler/src/com/oracle/max/graal/compiler/ir/NewInstance.java @ 3480:2423a432fa6b
changes to Node structure (incomplete)
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Thu, 28 Jul 2011 08:18:43 +0200 |
parents | 76507b87dd25 |
children | 9b59afa78775 |
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/* * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.max.graal.compiler.ir; import java.util.*; import com.oracle.max.graal.compiler.debug.*; import com.oracle.max.graal.compiler.phases.EscapeAnalysisPhase.EscapeField; import com.oracle.max.graal.compiler.phases.EscapeAnalysisPhase.EscapeOp; import com.oracle.max.graal.graph.*; import com.sun.cri.ci.*; import com.sun.cri.ri.*; /** * The {@code NewInstance} instruction represents the allocation of an instance class object. */ public final class NewInstance extends FixedNodeWithNext { final RiType instanceClass; public final int cpi; public final RiConstantPool constantPool; /** * Constructs a NewInstance instruction. * @param type the class being allocated * @param cpi the constant pool index * @param graph */ public NewInstance(RiType type, int cpi, RiConstantPool constantPool, Graph graph) { super(CiKind.Object, graph); this.instanceClass = type; this.cpi = cpi; this.constantPool = constantPool; } /** * Gets the instance class being allocated by this instruction. * @return the instance class allocated */ public RiType instanceClass() { return instanceClass; } /** * Gets the exact type produced by this instruction. For allocations of instance classes, this is * always the class allocated. * @return the exact type produced by this instruction */ @Override public RiType exactType() { return instanceClass; } @Override public void accept(ValueVisitor v) { v.visitNewInstance(this); } @Override public void print(LogStream out) { out.print("new instance ").print(CiUtil.toJavaName(instanceClass())); } @Override public Map<Object, Object> getDebugProperties() { Map<Object, Object> properties = super.getDebugProperties(); properties.put("instanceClass", instanceClass); properties.put("cpi", cpi); return properties; } @Override public Node copy(Graph into) { NewInstance x = new NewInstance(instanceClass, cpi, constantPool, into); super.copyInto(x); return x; } @SuppressWarnings("unchecked") @Override public <T extends Op> T lookup(Class<T> clazz) { if (clazz == EscapeOp.class) { return (T) ESCAPE; } return super.lookup(clazz); } private static final EscapeOp ESCAPE = new EscapeOp() { @Override public boolean canAnalyze(Node node) { return ((NewInstance) node).instanceClass().isResolved(); } @Override public boolean escape(Node node, Node usage) { if (usage instanceof LoadField) { LoadField x = (LoadField) usage; assert x.object() == node; return x.field().isResolved() == false; } else if (usage instanceof StoreField) { StoreField x = (StoreField) usage; return x.value() == node && x.object() != node; } else if (usage instanceof StoreIndexed) { StoreIndexed x = (StoreIndexed) usage; assert x.value() == node; return true; } else if (usage instanceof VirtualObjectField) { return false; } else if (usage instanceof RegisterFinalizer) { RegisterFinalizer x = (RegisterFinalizer) usage; assert x.object() == node; return false; } else { return super.escape(node, usage); } } @Override public EscapeField[] fields(Node node) { NewInstance x = (NewInstance) node; RiField[] riFields = x.instanceClass().fields(); EscapeField[] fields = new EscapeField[riFields.length]; for (int i = 0; i < riFields.length; i++) { RiField field = riFields[i]; fields[i] = new EscapeField(field.name(), field, field.kind().stackKind()); } return fields; } @Override public void beforeUpdate(Node node, Node usage) { if (usage instanceof RegisterFinalizer) { RegisterFinalizer x = (RegisterFinalizer) usage; x.replaceAndDelete(x.next()); } else { super.beforeUpdate(node, usage); } } @Override public int updateState(Node node, Node current, Map<Object, Integer> fieldIndex, Value[] fieldState) { if (current instanceof AccessField) { AccessField x = (AccessField) current; if (x.object() == node) { int field = fieldIndex.get(((AccessField) current).field()); if (current instanceof LoadField) { assert fieldState[field] != null : field + ", " + ((AccessField) current).field(); x.replaceAtUsages(fieldState[field]); assert x.usages().size() == 0; x.replaceAndDelete(x.next()); } else if (current instanceof StoreField) { fieldState[field] = ((StoreField) x).value(); assert x.usages().size() == 0; x.replaceAndDelete(x.next()); return field; } } } return -1; } }; }