Mercurial > hg > graal-compiler
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/ClassCastNode.java @ 20101:178814b064a7
moved use of GraphUtil.originalValue API into InvocationPlugins to avoid its overhead during canonicalization
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 31 Mar 2015 14:12:23 +0200 |
parents | 8470e81631f8 |
children | 48c1ebd24120 |
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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.hotspot.nodes; import com.oracle.graal.api.meta.*; import com.oracle.graal.graph.*; import com.oracle.graal.graph.spi.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.CallTargetNode.InvokeKind; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.java.*; import com.oracle.graal.replacements.nodes.*; /** * {@link MacroNode Macro node} for {@link Class#cast(Object)}. */ @NodeInfo public final class ClassCastNode extends MacroStateSplitNode implements Canonicalizable.Binary<ValueNode> { public static final NodeClass<ClassCastNode> TYPE = NodeClass.create(ClassCastNode.class); public ClassCastNode(InvokeKind invokeKind, ResolvedJavaMethod targetMethod, int bci, JavaType returnType, ValueNode receiver, ValueNode object) { super(TYPE, invokeKind, targetMethod, bci, returnType, receiver, object); } private ValueNode getJavaClass() { return arguments.get(0); } private ValueNode getObject() { return arguments.get(1); } public ValueNode getX() { return getJavaClass(); } public ValueNode getY() { return getObject(); } @Override public ValueNode canonical(CanonicalizerTool tool, ValueNode forJavaClass, ValueNode forObject) { ValueNode folded = tryFold(forJavaClass, forObject, tool.getConstantReflection(), null); return folded != null ? folded : this; } public static ValueNode tryFold(ValueNode javaClass, ValueNode object, ConstantReflectionProvider constantReflection, Assumptions assumptions) { if (javaClass != null && javaClass.isConstant()) { ResolvedJavaType type = constantReflection.asJavaType(javaClass.asConstant()); if (type != null && !type.isPrimitive()) { return CheckCastNode.create(type, object, null, false, assumptions); } } return null; } }