Mercurial > hg > graal-compiler
view graal/GraalCompiler/src/com/sun/c1x/ir/Switch.java @ 2585:3e0e65161345
new node layout: Op2
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Thu, 05 May 2011 14:12:19 +0200 |
parents | 16b9a8b5ad39 |
children | 0c6564c254af |
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/* * Copyright (c) 2009, 2010, 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.sun.c1x.ir; import java.util.*; import com.sun.c1x.value.*; import com.sun.cri.ci.*; /** * The {@code Switch} class is the base of both lookup and table switches. * * @author Ben L. Titzer */ public abstract class Switch extends BlockEnd { Value value; /** * Constructs a new Switch. * @param value the instruction that provides the value to be switched over * @param successors the list of successors of this switch * @param stateBefore the state before the switch * @param isSafepoint {@code true} if this switch is a safepoint */ public Switch(Value value, List<BlockBegin> successors, FrameState stateBefore, boolean isSafepoint) { super(CiKind.Illegal, stateBefore, isSafepoint, successors); this.value = value; } /** * Gets the instruction that provides the input value to this switch. * @return the instruction producing the input value */ public Value value() { return value; } /** * Gets the number of cases that this switch covers (excluding the default case). * @return the number of cases */ public int numberOfCases() { return successors.size() - 1; } /** * Iterates over the inputs to this instruction. * @param closure the closure to apply */ @Override public void inputValuesDo(ValueClosure closure) { value = closure.apply(value); } }