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view graal/com.oracle.graal.snippets/src/com/oracle/graal/snippets/nodes/ReverseBytesNode.java @ 7530:5e3d1a68664e
applied mx eclipseformat to all Java files
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 23 Jan 2013 16:34:57 +0100 |
parents | e23980f4a890 |
children |
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/* * Copyright (c) 2012, 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.snippets.nodes; import com.oracle.graal.api.meta.*; import com.oracle.graal.compiler.gen.*; import com.oracle.graal.compiler.target.*; import com.oracle.graal.lir.*; import com.oracle.graal.nodes.*; import com.oracle.graal.nodes.calc.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.nodes.type.*; public class ReverseBytesNode extends FloatingNode implements LIRGenLowerable, Canonicalizable { @Input private ValueNode value; public ReverseBytesNode(ValueNode value) { super(StampFactory.forKind(value.kind())); assert kind().getStackKind() == Kind.Int || kind() == Kind.Long; this.value = value; } @Override public ValueNode canonical(CanonicalizerTool tool) { if (value.isConstant()) { long v = value.asConstant().asLong(); if (kind().getStackKind() == Kind.Int) { return ConstantNode.forInt(Integer.reverseBytes((int) v), graph()); } else if (kind() == Kind.Long) { return ConstantNode.forLong(Long.reverseBytes(v), graph()); } } return this; } @NodeIntrinsic public static native int reverse(int v); @NodeIntrinsic public static native long reverse(long v); @Override public void generate(LIRGenerator gen) { Variable result = gen.newVariable(value.kind()); gen.emitByteSwap(result, gen.operand(value)); gen.setResult(this, result); } }