Mercurial > hg > graal-jvmci-8
diff graal/Compiler/src/com/sun/c1x/ir/LookupSwitch.java @ 2507:9ec15d6914ca
Pull over of compiler from maxine repository.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 11:43:22 +0200 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/Compiler/src/com/sun/c1x/ir/LookupSwitch.java Wed Apr 27 11:43:22 2011 +0200 @@ -0,0 +1,88 @@ +/* + * 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.sun.c1x.ir; + +import static com.sun.c1x.debug.InstructionPrinter.InstructionLineColumn.*; + +import java.util.*; + +import com.sun.c1x.debug.*; +import com.sun.c1x.value.*; + +/** + * The {@code LookupSwitch} instruction represents a lookup switch bytecode, which has a sorted + * array of key values. + * + * @author Ben L. Titzer + */ +public final class LookupSwitch extends Switch { + + final int[] keys; + + /** + * Constructs a new LookupSwitch instruction. + * @param value the instruction producing the value being switched on + * @param successors the list of successors + * @param keys the list of keys, sorted + * @param stateBefore the state before the switch + * @param isSafepoint {@code true} if this instruction is a safepoint + */ + public LookupSwitch(Value value, List<BlockBegin> successors, int[] keys, FrameState stateBefore, boolean isSafepoint) { + super(value, successors, stateBefore, isSafepoint); + this.keys = keys; + } + + /** + * Gets the key at the specified index. + * @param i the index + * @return the key at that index + */ + public int keyAt(int i) { + return keys[i]; + } + + public int keysLength() { + return keys.length; + } + + @Override + public void accept(ValueVisitor v) { + v.visitLookupSwitch(this); + } + + @Override + public void print(LogStream out) { + out.print("lookupswitch "); + if (isSafepoint()) { + out.print("(safepoint) "); + } + out.println(value()); + int l = numberOfCases(); + for (int i = 0; i < l; i++) { + INSTRUCTION.advance(out); + out.printf("case %5d: B%d%n", keyAt(i), successors().get(i).blockID); + } + INSTRUCTION.advance(out); + out.print("default : B").print(defaultSuccessor().blockID); + } +}