Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/DynamicNewArrayNode.java @ 21925:64475dbf6aec
Move instantiation checks from methods substitutions to the lowering of DynamicNewInstanceNode and DynamicNewArrayNode, so that Unsafe.allocateInstance and Array.newInstance can be intrinsified to a single node.
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Wed, 10 Jun 2015 17:23:19 -0700 |
parents | 48c1ebd24120 |
children | ae5bee2d61b2 |
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/* * Copyright (c) 2013, 2015, 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. */ //JaCoCo Exclude package com.oracle.graal.nodes.java; import com.oracle.graal.compiler.common.type.*; import com.oracle.graal.graph.*; import com.oracle.graal.graph.spi.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.jvmci.meta.*; /** * The {@code DynamicNewArrayNode} is used for allocation of arrays when the type is not a * compile-time constant. */ @NodeInfo public class DynamicNewArrayNode extends AbstractNewArrayNode implements Canonicalizable { public static final NodeClass<DynamicNewArrayNode> TYPE = NodeClass.create(DynamicNewArrayNode.class); @Input ValueNode elementType; /** * A non-null value indicating the worst case element type. Mainly useful for distinguishing * Object arrays from primitive arrays. */ protected final Kind knownElementKind; public DynamicNewArrayNode(ValueNode elementType, ValueNode length, boolean fillContents, Kind knownElementKind) { this(TYPE, elementType, length, fillContents, knownElementKind); } protected DynamicNewArrayNode(NodeClass<? extends DynamicNewArrayNode> c, ValueNode elementType, ValueNode length, boolean fillContents, Kind knownElementKind) { super(c, StampFactory.objectNonNull(), length, fillContents); this.elementType = elementType; this.knownElementKind = knownElementKind; assert knownElementKind != Kind.Void && knownElementKind != Kind.Illegal; } public ValueNode getElementType() { return elementType; } public Kind getKnownElementKind() { return knownElementKind; } @Override public void simplify(SimplifierTool tool) { /* * Do not call the super implementation: we must not eliminate unused allocations because * throwing a NullPointerException or IllegalArgumentException is a possible side effect of * an unused allocation. */ } @Override public Node canonical(CanonicalizerTool tool) { if (elementType.isConstant()) { ResolvedJavaType type = tool.getConstantReflection().asJavaType(elementType.asConstant()); if (type != null && !throwsIllegalArgumentException(type)) { return new NewArrayNode(type, length(), fillContents()); } } return this; } public static boolean throwsIllegalArgumentException(Class<?> elementType) { return elementType == void.class; } public static boolean throwsIllegalArgumentException(ResolvedJavaType elementType) { return elementType.getKind() == Kind.Void; } @NodeIntrinsic private static native Object newArray(Class<?> componentType, int length, @ConstantNodeParameter boolean fillContents, @ConstantNodeParameter Kind knownElementKind); public static Object newUninitializedArray(Class<?> componentType, int length, Kind knownElementKind) { return newArray(componentType, length, false, knownElementKind); } }