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comparison graal/GraalCompiler/src/com/sun/c1x/ir/TableSwitch.java @ 2509:16b9a8b5ad39

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Renamings Runtime=>GraalRuntime and Compiler=>GraalCompiler
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Wed, 27 Apr 2011 11:50:44 +0200
parents graal/Compiler/src/com/sun/c1x/ir/TableSwitch.java@9ec15d6914ca
children 4a36a0bd6d18
comparison
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2508:fea94949e0a2 2509:16b9a8b5ad39
1 /*
2 * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23 package com.sun.c1x.ir;
24
25 import static com.sun.c1x.debug.InstructionPrinter.InstructionLineColumn.*;
26
27 import java.util.*;
28
29 import com.sun.c1x.debug.*;
30 import com.sun.c1x.value.*;
31
32 /**
33 * The {@code TableSwitch} instruction represents a table switch.
34 *
35 * @author Ben L. Titzer
36 */
37 public final class TableSwitch extends Switch {
38
39 final int lowKey;
40
41 /**
42 * Constructs a new TableSwitch instruction.
43 * @param value the instruction producing the value being switched on
44 * @param successors the list of successors
45 * @param lowKey the lowest integer key in the table
46 * @param stateBefore the state before the switch
47 * @param isSafepoint {@code true} if this instruction is a safepoint
48 */
49 public TableSwitch(Value value, List<BlockBegin> successors, int lowKey, FrameState stateBefore, boolean isSafepoint) {
50 super(value, successors, stateBefore, isSafepoint);
51 this.lowKey = lowKey;
52 }
53
54 /**
55 * Gets the lowest key in the table switch (inclusive).
56 * @return the low key
57 */
58 public int lowKey() {
59 return lowKey;
60 }
61
62 /**
63 * Gets the highest key in the table switch (exclusive).
64 * @return the high key
65 */
66 public int highKey() {
67 return lowKey + numberOfCases();
68 }
69
70 @Override
71 public void accept(ValueVisitor v) {
72 v.visitTableSwitch(this);
73 }
74
75 @Override
76 public void print(LogStream out) {
77 out.print("tableswitch ");
78 if (isSafepoint()) {
79 out.print("(safepoint) ");
80 }
81 out.println(value());
82 int l = numberOfCases();
83 for (int i = 0; i < l; i++) {
84 INSTRUCTION.advance(out);
85 out.printf("case %5d: B%d%n", lowKey() + i, successors().get(i).blockID);
86 }
87 INSTRUCTION.advance(out);
88 out.print("default : B").print(defaultSuccessor().blockID);
89 }
90 }