Mercurial > hg > graal-compiler
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/CheckCastDynamicNode.java @ 18998:ec0733b5a90a
Allow final modifier on node subclasses and start adding the modifier to leaf classes.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Wed, 28 Jan 2015 02:34:14 +0100 |
parents | f57d86eb036f |
children | 7e2c87dae93e |
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/* * Copyright (c) 2009, 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 com.oracle.graal.api.meta.*; import com.oracle.graal.graph.spi.*; import com.oracle.graal.nodeinfo.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; /** * Implements a type check where the type being checked is loaded at runtime. This is used, for * instance, to implement an object array store check. */ @NodeInfo public final class CheckCastDynamicNode extends FixedWithNextNode implements Canonicalizable.Binary<ValueNode>, Lowerable { @Input ValueNode object; @Input ValueNode hub; /** * Determines the exception thrown by this node if the check fails: {@link ClassCastException} * if false; {@link ArrayStoreException} if true. */ protected final boolean forStoreCheck; public CheckCastDynamicNode(ValueNode hub, ValueNode object, boolean forStoreCheck) { super(object.stamp()); this.hub = hub; this.object = object; this.forStoreCheck = forStoreCheck; } public ValueNode object() { return object; } /** * Gets the runtime-loaded type being cast to. */ public ValueNode hub() { return hub; } public ValueNode getX() { return object; } public ValueNode getY() { return hub; } public boolean isForStoreCheck() { return forStoreCheck; } @Override public void lower(LoweringTool tool) { tool.getLowerer().lower(this, tool); } @Override public boolean inferStamp() { return updateStamp(object().stamp()); } @Override public ValueNode canonical(CanonicalizerTool tool, ValueNode forObject, ValueNode forHub) { if (StampTool.isPointerAlwaysNull(forObject)) { return forObject; } if (forHub.isConstant()) { ResolvedJavaType t = tool.getConstantReflection().asJavaType(forHub.asConstant()); if (t != null) { return new CheckCastNode(t, forObject, null, forStoreCheck); } } return this; } @NodeIntrinsic public static native <T> T checkCastDynamic(Class<T> type, Object object, @ConstantNodeParameter boolean forStoreCheck); }