Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/DynamicNewInstanceNode.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, 2014, 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.graal.nodes.java; import java.lang.reflect.*; 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.*; @NodeInfo public final class DynamicNewInstanceNode extends AbstractNewObjectNode implements Canonicalizable { public static final NodeClass<DynamicNewInstanceNode> TYPE = NodeClass.create(DynamicNewInstanceNode.class); @Input ValueNode clazz; public DynamicNewInstanceNode(ValueNode clazz, boolean fillContents) { super(TYPE, StampFactory.objectNonNull(), fillContents); this.clazz = clazz; } public ValueNode getInstanceType() { return clazz; } @Override public void simplify(SimplifierTool tool) { /* * Do not call the super implementation: we must not eliminate unused allocations because * throwing an InstantiationException is a possible side effect of an unused allocation. */ } @Override public Node canonical(CanonicalizerTool tool) { if (clazz.isConstant()) { ResolvedJavaType type = tool.getConstantReflection().asJavaType(clazz.asConstant()); if (type != null && type.isInitialized() && !throwsInstantiationException(type, tool.getMetaAccess())) { return new NewInstanceNode(type, fillContents()); } } return this; } public static boolean throwsInstantiationException(Class<?> type) { return type.isPrimitive() || type.isArray() || type.isInterface() || Modifier.isAbstract(type.getModifiers()) || type == Class.class; } public static boolean throwsInstantiationException(ResolvedJavaType type, MetaAccessProvider metaAccess) { return type.isPrimitive() || type.isArray() || type.isInterface() || Modifier.isAbstract(type.getModifiers()) || type.equals(metaAccess.lookupJavaType(Class.class)); } }