Mercurial > hg > graal-compiler
annotate src/share/vm/ci/ciConstant.hpp @ 1941:79d04223b8a5
Added caching for resolved types and resolved fields.
This is crucial, because the local load elimination will lead to wrong results, if field equality (of two RiField objects with the same object and the same RiType) is not given. The caching makes sure that the default equals implementation is sufficient.
author | Thomas Wuerthinger <wuerthinger@ssw.jku.at> |
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date | Tue, 28 Dec 2010 18:33:26 +0100 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2003, Oracle and/or its affiliates. All rights reserved. |
0 | 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 | |
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7 * published by the Free Software Foundation. | |
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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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 // ciConstant | |
26 // | |
27 // This class represents a constant value. | |
28 class ciConstant VALUE_OBJ_CLASS_SPEC { | |
29 private: | |
30 friend class ciEnv; | |
31 friend class ciField; | |
32 | |
33 BasicType _type; | |
34 union { | |
35 jint _int; | |
36 jlong _long; | |
37 jint _long_half[2]; | |
38 jfloat _float; | |
39 jdouble _double; | |
40 ciObject* _object; | |
41 } _value; | |
42 | |
43 // Implementation of the print method. | |
44 void print_impl(outputStream* st); | |
45 | |
46 public: | |
47 | |
48 ciConstant() { | |
49 _type = T_ILLEGAL; _value._long = -1; | |
50 } | |
51 ciConstant(BasicType type, jint value) { | |
52 assert(type != T_LONG && type != T_DOUBLE && type != T_FLOAT, | |
53 "using the wrong ciConstant constructor"); | |
54 _type = type; _value._int = value; | |
55 } | |
56 ciConstant(jlong value) { | |
57 _type = T_LONG; _value._long = value; | |
58 } | |
59 ciConstant(jfloat value) { | |
60 _type = T_FLOAT; _value._float = value; | |
61 } | |
62 ciConstant(jdouble value) { | |
63 _type = T_DOUBLE; _value._double = value; | |
64 } | |
65 ciConstant(BasicType type, ciObject* p) { | |
66 _type = type; _value._object = p; | |
67 } | |
68 | |
69 BasicType basic_type() const { return _type; } | |
70 | |
71 jboolean as_boolean() { | |
72 assert(basic_type() == T_BOOLEAN, "wrong type"); | |
73 return (jboolean)_value._int; | |
74 } | |
75 jchar as_char() { | |
76 assert(basic_type() == T_CHAR, "wrong type"); | |
77 return (jchar)_value._int; | |
78 } | |
79 jbyte as_byte() { | |
80 assert(basic_type() == T_BYTE, "wrong type"); | |
81 return (jbyte)_value._int; | |
82 } | |
83 jshort as_short() { | |
84 assert(basic_type() == T_SHORT, "wrong type"); | |
85 return (jshort)_value._int; | |
86 } | |
87 jint as_int() { | |
88 assert(basic_type() == T_BOOLEAN || basic_type() == T_CHAR || | |
89 basic_type() == T_BYTE || basic_type() == T_SHORT || | |
90 basic_type() == T_INT, "wrong type"); | |
91 return _value._int; | |
92 } | |
93 jlong as_long() { | |
94 assert(basic_type() == T_LONG, "wrong type"); | |
95 return _value._long; | |
96 } | |
97 jfloat as_float() { | |
98 assert(basic_type() == T_FLOAT, "wrong type"); | |
99 return _value._float; | |
100 } | |
101 jdouble as_double() { | |
102 assert(basic_type() == T_DOUBLE, "wrong type"); | |
103 return _value._double; | |
104 } | |
105 ciObject* as_object() const { | |
106 assert(basic_type() == T_OBJECT || basic_type() == T_ARRAY, "wrong type"); | |
107 return _value._object; | |
108 } | |
109 | |
110 // Debugging output | |
111 void print(); | |
112 }; |