Mercurial > hg > truffle
annotate src/share/vm/ci/ciType.cpp @ 14518:d8041d695d19
Merged with jdk9/dev/hotspot changeset 3812c088b945
| author | twisti |
|---|---|
| date | Tue, 11 Mar 2014 18:45:59 -0700 |
| parents | de6a9e811145 |
| children | 4ca6dc0799b6 78bbf4d43a14 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 2013, 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). | |
| 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 | |
| 1972 | 25 #include "precompiled.hpp" |
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26 #include "ci/ciEnv.hpp" |
| 1972 | 27 #include "ci/ciType.hpp" |
| 28 #include "ci/ciUtilities.hpp" | |
| 29 #include "classfile/systemDictionary.hpp" | |
| 30 #include "oops/oop.inline.hpp" | |
| 0 | 31 |
| 32 ciType* ciType::_basic_types[T_CONFLICT+1]; | |
| 33 | |
| 34 // ciType | |
| 35 // | |
| 36 // This class represents either a class (T_OBJECT), array (T_ARRAY), | |
| 37 // or one of the primitive types such as T_INT. | |
| 38 | |
| 39 // ------------------------------------------------------------------ | |
| 40 // ciType::ciType | |
| 41 // | |
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42 ciType::ciType(BasicType basic_type) : ciMetadata() { |
| 0 | 43 assert(basic_type >= T_BOOLEAN && basic_type <= T_CONFLICT, "range check"); |
| 44 _basic_type = basic_type; | |
| 45 } | |
| 46 | |
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47 ciType::ciType(KlassHandle k) : ciMetadata(k()) { |
| 6983 | 48 _basic_type = k()->oop_is_array() ? T_ARRAY : T_OBJECT; |
| 0 | 49 } |
| 50 | |
| 51 | |
| 52 // ------------------------------------------------------------------ | |
| 53 // ciType::is_subtype_of | |
| 54 // | |
| 55 bool ciType::is_subtype_of(ciType* type) { | |
| 56 if (this == type) return true; | |
| 57 if (is_klass() && type->is_klass()) | |
| 58 return this->as_klass()->is_subtype_of(type->as_klass()); | |
| 59 return false; | |
| 60 } | |
| 61 | |
| 62 // ------------------------------------------------------------------ | |
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63 // ciType::name |
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64 // |
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65 // Return the name of this type |
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66 const char* ciType::name() { |
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67 if (is_primitive_type()) { |
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68 return type2name(basic_type()); |
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69 } else { |
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70 assert(is_klass(), "must be"); |
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71 return as_klass()->name()->as_utf8(); |
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72 } |
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73 } |
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74 |
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75 // ------------------------------------------------------------------ |
| 0 | 76 // ciType::print_impl |
| 77 // | |
| 78 // Implementation of the print method. | |
| 79 void ciType::print_impl(outputStream* st) { | |
| 80 st->print(" type="); | |
| 81 print_name_on(st); | |
| 82 } | |
| 83 | |
| 84 // ------------------------------------------------------------------ | |
| 85 // ciType::print_name | |
| 86 // | |
| 87 // Print the name of this type | |
| 88 void ciType::print_name_on(outputStream* st) { | |
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89 ResourceMark rm; |
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90 st->print(name()); |
| 0 | 91 } |
| 92 | |
| 93 | |
| 94 | |
| 95 // ------------------------------------------------------------------ | |
| 96 // ciType::java_mirror | |
| 97 // | |
| 98 ciInstance* ciType::java_mirror() { | |
| 99 VM_ENTRY_MARK; | |
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100 return CURRENT_THREAD_ENV->get_instance(Universe::java_mirror(basic_type())); |
| 0 | 101 } |
| 102 | |
| 103 // ------------------------------------------------------------------ | |
| 104 // ciType::box_klass | |
| 105 // | |
| 106 ciKlass* ciType::box_klass() { | |
| 107 if (!is_primitive_type()) return this->as_klass(); // reference types are "self boxing" | |
| 108 | |
| 109 // Void is "boxed" with a null. | |
| 110 if (basic_type() == T_VOID) return NULL; | |
| 111 | |
| 112 VM_ENTRY_MARK; | |
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113 return CURRENT_THREAD_ENV->get_instance_klass(SystemDictionary::box_klass(basic_type())); |
| 0 | 114 } |
| 115 | |
| 116 | |
| 117 // ------------------------------------------------------------------ | |
| 118 // ciType::make | |
| 119 // | |
| 120 // Produce the ciType for a given primitive BasicType. | |
| 121 // As a bonus, produce the right reference type for T_OBJECT. | |
| 122 // Does not work on T_ARRAY. | |
| 123 ciType* ciType::make(BasicType t) { | |
| 124 // short, etc. | |
| 125 // Note: Bare T_ADDRESS means a raw pointer type, not a return_address. | |
| 126 assert((uint)t < T_CONFLICT+1, "range check"); | |
| 1142 | 127 if (t == T_OBJECT) return ciEnv::_Object_klass; // java/lang/Object |
| 0 | 128 assert(_basic_types[t] != NULL, "domain check"); |
| 129 return _basic_types[t]; | |
| 130 } | |
| 131 | |
| 132 // ciReturnAddress | |
| 133 // | |
| 134 // This class represents the type of a specific return address in the | |
| 135 // bytecodes. | |
| 136 | |
| 137 // ------------------------------------------------------------------ | |
| 138 // ciReturnAddress::ciReturnAddress | |
| 139 // | |
| 140 ciReturnAddress::ciReturnAddress(int bci) : ciType(T_ADDRESS) { | |
| 141 assert(0 <= bci, "bci cannot be negative"); | |
| 142 _bci = bci; | |
| 143 } | |
| 144 | |
| 145 // ------------------------------------------------------------------ | |
| 146 // ciReturnAddress::print_impl | |
| 147 // | |
| 148 // Implementation of the print method. | |
| 149 void ciReturnAddress::print_impl(outputStream* st) { | |
| 150 st->print(" bci=%d", _bci); | |
| 151 } | |
| 152 | |
| 153 // ------------------------------------------------------------------ | |
| 154 // ciReturnAddress::make | |
| 155 ciReturnAddress* ciReturnAddress::make(int bci) { | |
| 156 GUARDED_VM_ENTRY(return CURRENT_ENV->get_return_address(bci);) | |
| 157 } |