Mercurial > hg > graal-compiler
annotate src/share/vm/ci/ciInstance.hpp @ 6135:8f37087fc13f
7171890: C1: add Class.isInstance intrinsic
Summary: Class.cast which calls Class.isInstance is heavily used by the new JSR 292 implementation
Reviewed-by: roland
Contributed-by: Krystal Mok <rednaxelafx@gmail.com>
author | roland |
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date | Tue, 05 Jun 2012 10:15:27 +0200 |
parents | c7f3d0b4570f |
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rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2011, 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 | |
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). | |
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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 | |
1972 | 25 #ifndef SHARE_VM_CI_CIINSTANCE_HPP |
26 #define SHARE_VM_CI_CIINSTANCE_HPP | |
27 | |
28 #include "ci/ciObject.hpp" | |
29 #include "oops/instanceOop.hpp" | |
30 | |
0 | 31 // ciInstance |
32 // | |
33 // This class represents an instanceOop in the HotSpot virtual | |
34 // machine. This is an oop which corresponds to a non-array | |
35 // instance of java.lang.Object. | |
36 class ciInstance : public ciObject { | |
37 CI_PACKAGE_ACCESS | |
38 | |
39 protected: | |
40 ciInstance(instanceHandle h_i) : ciObject(h_i) { | |
41 assert(h_i()->is_instance(), "wrong type"); | |
42 } | |
43 | |
44 ciInstance(ciKlass* klass) : ciObject(klass) {} | |
45 | |
46 instanceOop get_instanceOop() { return (instanceOop)get_oop(); } | |
47 | |
48 const char* type_string() { return "ciInstance"; } | |
49 | |
50 void print_impl(outputStream* st); | |
51 | |
52 public: | |
53 // If this object is a java mirror, return the corresponding type. | |
54 // Otherwise, return NULL. | |
55 // (Remember that a java mirror is an instance of java.lang.Class.) | |
56 ciType* java_mirror_type(); | |
57 | |
58 // What kind of ciObject is this? | |
59 bool is_instance() { return true; } | |
60 bool is_java_object() { return true; } | |
61 | |
62 // Constant value of a field. | |
63 ciConstant field_value(ciField* field); | |
64 | |
65 // Constant value of a field at the specified offset. | |
66 ciConstant field_value_by_offset(int field_offset); | |
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67 |
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68 ciKlass* java_lang_Class_klass(); |
0 | 69 }; |
1972 | 70 |
71 #endif // SHARE_VM_CI_CIINSTANCE_HPP |