Mercurial > hg > graal-compiler
view graal/com.oracle.max.graal.nodes/src/com/oracle/graal/nodes/java/LoadFieldNode.java @ 5060:4ed4295ce15f
Update import statements.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Thu, 08 Mar 2012 19:11:12 +0100 |
parents | ed559a528128 |
children |
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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.graal.nodes.java; import com.oracle.max.cri.ci.*; import com.oracle.max.cri.ri.*; import com.oracle.graal.graph.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; /** * The {@code LoadFieldNode} represents a read of a static or instance field. */ public final class LoadFieldNode extends AccessFieldNode implements Canonicalizable, LIRLowerable, Node.IterableNodeType { /** * Creates a new LoadFieldNode instance. * * @param object the receiver object * @param field the compiler interface field */ public LoadFieldNode(ValueNode object, RiResolvedField field) { super(createStamp(field), object, field); } private static Stamp createStamp(RiResolvedField field) { CiKind kind = field.kind(false); if (kind == CiKind.Object && field.type() instanceof RiResolvedType) { RiResolvedType resolvedType = (RiResolvedType) field.type(); return StampFactory.declared(resolvedType); } else { return StampFactory.forKind(kind); } } @Override public void generate(LIRGeneratorTool gen) { gen.visitLoadField(this); } @Override public boolean needsStateAfter() { return false; } @Override public ValueNode canonical(CanonicalizerTool tool) { CiConstant constant = null; if (isStatic()) { constant = field().constantValue(null); } else if (object().isConstant() && !object().isNullConstant()) { constant = field().constantValue(object().asConstant()); } if (constant != null) { return ConstantNode.forCiConstant(constant, tool.runtime(), graph()); } return this; } }