Mercurial > hg > graal-compiler
comparison graal/com.oracle.truffle.api/src/com/oracle/truffle/api/CompilerAsserts.java @ 9244:8f540423a5be
Added two new classes to the Truffle API: CompilerDirectives and CompilerAsserts.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Tue, 23 Apr 2013 11:20:53 +0200 |
parents | |
children | 494b818b527c |
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9243:136cc8fd8890 | 9244:8f540423a5be |
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1 /* | |
2 * Copyright (c) 2013, 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.oracle.truffle.api; | |
24 | |
25 /** | |
26 * Assertions about the code produced by the Truffle compiler. All operations have no effect when | |
27 * either executed in the interpreter or in the compiled code. The assertions are checked during | |
28 * code generation and the Truffle compiler produces for failing assertions a stack trace that | |
29 * identifies the code position of the assertion in the context of the current compilation. | |
30 * | |
31 */ | |
32 public class CompilerAsserts { | |
33 | |
34 /** | |
35 * Assertion that this code position should never be reached during compilation. It can be used | |
36 * for exceptional code paths or rare code paths that should never be included in a compilation | |
37 * unit. See {@link CompilerDirectives#transferToInterpreter()} for the corresponding compiler | |
38 * directive. | |
39 */ | |
40 public static void neverPartOfCompilation() { | |
41 } | |
42 | |
43 /** | |
44 * Assertion that the corresponding value is reduced to a constant during compilation. | |
45 * | |
46 * @param value the value that must be constant during compilation | |
47 * @return the value given as parameter | |
48 */ | |
49 public static boolean compilationConstant(boolean value) { | |
50 return value; | |
51 } | |
52 | |
53 /** | |
54 * Assertion that the corresponding value is reduced to a constant during compilation. | |
55 * | |
56 * @param value the value that must be constant during compilation | |
57 * @return the value given as parameter | |
58 */ | |
59 public static byte compilationConstant(byte value) { | |
60 return value; | |
61 } | |
62 | |
63 /** | |
64 * Assertion that the corresponding value is reduced to a constant during compilation. | |
65 * | |
66 * @param value the value that must be constant during compilation | |
67 * @return the value given as parameter | |
68 */ | |
69 public static char compilationConstant(char value) { | |
70 return value; | |
71 } | |
72 | |
73 /** | |
74 * Assertion that the corresponding value is reduced to a constant during compilation. | |
75 * | |
76 * @param value the value that must be constant during compilation | |
77 * @return the value given as parameter | |
78 */ | |
79 public static short compilationConstant(short value) { | |
80 return value; | |
81 } | |
82 | |
83 /** | |
84 * Assertion that the corresponding value is reduced to a constant during compilation. | |
85 * | |
86 * @param value the value that must be constant during compilation | |
87 * @return the value given as parameter | |
88 */ | |
89 public static int compilationConstant(int value) { | |
90 return value; | |
91 } | |
92 | |
93 /** | |
94 * Assertion that the corresponding value is reduced to a constant during compilation. | |
95 * | |
96 * @param value the value that must be constant during compilation | |
97 * @return the value given as parameter | |
98 */ | |
99 public static long compilationConstant(long value) { | |
100 return value; | |
101 } | |
102 | |
103 /** | |
104 * Assertion that the corresponding value is reduced to a constant during compilation. | |
105 * | |
106 * @param value the value that must be constant during compilation | |
107 * @return the value given as parameter | |
108 */ | |
109 public static float compilationConstant(float value) { | |
110 return value; | |
111 } | |
112 | |
113 /** | |
114 * Assertion that the corresponding value is reduced to a constant during compilation. | |
115 * | |
116 * @param value the value that must be constant during compilation | |
117 * @return the value given as parameter | |
118 */ | |
119 public static double compilationConstant(double value) { | |
120 return value; | |
121 } | |
122 | |
123 /** | |
124 * Assertion that the corresponding value is reduced to a constant during compilation. | |
125 * | |
126 * @param value the value that must be constant during compilation | |
127 * @return the value given as parameter | |
128 */ | |
129 public static Object compilationConstant(Object value) { | |
130 return value; | |
131 } | |
132 } |