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comparison graal/GraalCompiler/src/com/sun/c1x/ir/Base.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/Base.java@9ec15d6914ca
children a384fac3fd34
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 com.sun.c1x.debug.*;
26 import com.sun.cri.ci.*;
27
28 /**
29 * The {@code Base} instruction represents the end of the entry block of the procedure that has
30 * both the standard entry and the OSR entry as successors.
31 *
32 * @author Ben L. Titzer
33 */
34 public final class Base extends BlockEnd {
35
36 /**
37 * Constructs a new Base instruction.
38 * @param standardEntry the standard entrypoint block
39 * @param osrEntry the OSR entrypoint block
40 */
41 public Base(BlockBegin standardEntry, BlockBegin osrEntry) {
42 super(CiKind.Illegal, null, false);
43 assert osrEntry == null || osrEntry.isOsrEntry();
44 assert standardEntry.isStandardEntry();
45 if (osrEntry != null) {
46 successors.add(osrEntry);
47 }
48 successors.add(standardEntry);
49 }
50
51 /**
52 * Gets the standard entrypoint block.
53 * @return the standard entrypoint block
54 */
55 public BlockBegin standardEntry() {
56 return defaultSuccessor();
57 }
58
59 /**
60 * Gets the OSR entrypoint block, if it exists.
61 * @return the OSR entrypoint bock, if it exists; {@code null} otherwise
62 */
63 public BlockBegin osrEntry() {
64 return successors.size() < 2 ? null : successors.get(0);
65 }
66
67 @Override
68 public void accept(ValueVisitor v) {
69 v.visitBase(this);
70 }
71
72 @Override
73 public void print(LogStream out) {
74 out.print("std entry B").print(standardEntry().blockID);
75 if (successors().size() > 1) {
76 out.print(" osr entry B").print(osrEntry().blockID);
77 }
78 }
79 }