Mercurial > hg > graal-compiler
comparison graal/GraalCompiler/src/com/sun/c1x/ir/TableSwitch.java @ 2509:16b9a8b5ad39
Renamings Runtime=>GraalRuntime and Compiler=>GraalCompiler
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 11:50:44 +0200 |
parents | graal/Compiler/src/com/sun/c1x/ir/TableSwitch.java@9ec15d6914ca |
children | 4a36a0bd6d18 |
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2508:fea94949e0a2 | 2509:16b9a8b5ad39 |
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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 } |