Mercurial > hg > truffle
view graal/com.oracle.graal.replacements/src/com/oracle/graal/replacements/nodes/DirectReadNode.java @ 8892:2c0c708a0ad6
Introduce DeoptimizingNode interface
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Mon, 08 Apr 2013 09:26:06 +0200 |
parents | 92571f3eeeeb |
children | 9ee5f3bfa755 |
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/* * 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.replacements.nodes; import static com.oracle.graal.graph.UnsafeAccess.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.extended.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; /** * A special purpose store node that differs from {@link UnsafeStoreNode} in that it is not a * {@link StateSplit} and takes a computed address instead of an object. */ public class DirectReadNode extends FixedWithNextNode implements LIRLowerable { @Input private ValueNode address; private final Kind readKind; public DirectReadNode(ValueNode address, Kind readKind) { super(StampFactory.forKind(readKind)); this.address = address; this.readKind = readKind; } @Override public void generate(LIRGeneratorTool gen) { gen.setResult(this, gen.emitLoad(readKind, gen.operand(address), 0, Value.ILLEGAL, 0, null)); } @SuppressWarnings("unchecked") @NodeIntrinsic public static <T> T read(long address, @ConstantNodeParameter Kind kind) { if (kind == Kind.Boolean) { return (T) Boolean.valueOf(unsafe.getByte(address) != 0); } if (kind == Kind.Byte) { return (T) (Byte) unsafe.getByte(address); } if (kind == Kind.Short) { return (T) (Short) unsafe.getShort(address); } if (kind == Kind.Char) { return (T) (Character) unsafe.getChar(address); } if (kind == Kind.Int) { return (T) (Integer) unsafe.getInt(address); } if (kind == Kind.Float) { return (T) (Float) unsafe.getFloat(address); } if (kind == Kind.Long) { return (T) (Long) unsafe.getLong(address); } assert kind == Kind.Double; return (T) (Double) unsafe.getDouble(address); } }