Mercurial > hg > graal-jvmci-8
diff graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/GetObjectAddressNode.java @ 6390:1e1c85d9ca7e
moved Node classes into com.oracle.graal.hotspot.nodes package
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Fri, 14 Sep 2012 13:32:04 +0200 |
parents | graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/snippets/GetObjectAddressNode.java@a891c53a295b |
children | fb66841a0994 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/GetObjectAddressNode.java Fri Sep 14 13:32:04 2012 +0200 @@ -0,0 +1,56 @@ +/* + * Copyright (c) 2012, 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.nodes.*; +import com.oracle.graal.nodes.spi.*; +import com.oracle.graal.nodes.type.*; + +/** + * Intrinsification for getting the address of an object. + * The code path(s) between a call to {@link #get(Object)} and all uses + * of the returned value must be atomic. The only exception to this is + * if the usage is not an attempt to dereference the value. + */ +public class GetObjectAddressNode extends FixedWithNextNode implements LIRLowerable { + @Input private ValueNode object; + + public GetObjectAddressNode(ValueNode obj) { + super(StampFactory.forKind(Kind.Long)); + this.object = obj; + } + + @SuppressWarnings("unused") + @NodeIntrinsic + public static long get(Object array) { + throw new UnsupportedOperationException(); + } + + @Override + public void generate(LIRGeneratorTool gen) { + Value obj = gen.newVariable(gen.target().wordKind); + gen.emitMove(gen.operand(object), obj); + gen.setResult(this, obj); + } +}