Tue, 24 Dec 2013 11:48:39 -0800
8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013
Summary: Copyright year updated for files modified during 2013
Reviewed-by: twisti, iveresov
1 /*
2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2009 Red Hat, Inc.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
26 #include "precompiled.hpp"
27 #include "ci/ciInstance.hpp"
28 #include "ci/ciStreams.hpp"
29 #include "shark/sharkBuilder.hpp"
30 #include "shark/sharkConstant.hpp"
31 #include "shark/sharkValue.hpp"
33 using namespace llvm;
35 SharkConstant* SharkConstant::for_ldc(ciBytecodeStream *iter) {
36 ciConstant constant = iter->get_constant();
37 ciType *type = NULL;
38 if (constant.basic_type() == T_OBJECT) {
39 ciEnv *env = ciEnv::current();
41 assert(constant.as_object()->klass() == env->String_klass()
42 || constant.as_object()->klass() == env->Class_klass()
43 || constant.as_object()->klass()->is_subtype_of(env->MethodType_klass())
44 || constant.as_object()->klass()->is_subtype_of(env->MethodHandle_klass()), "should be");
46 type = constant.as_object()->klass();
47 }
48 return new SharkConstant(constant, type);
49 }
51 SharkConstant* SharkConstant::for_field(ciBytecodeStream *iter) {
52 bool will_link;
53 ciField *field = iter->get_field(will_link);
54 assert(will_link, "typeflow responsibility");
56 return new SharkConstant(field->constant_value(), field->type());
57 }
59 SharkConstant::SharkConstant(ciConstant constant, ciType *type) {
60 SharkValue *value = NULL;
62 switch (constant.basic_type()) {
63 case T_BOOLEAN:
64 case T_BYTE:
65 case T_CHAR:
66 case T_SHORT:
67 case T_INT:
68 value = SharkValue::jint_constant(constant.as_int());
69 break;
71 case T_LONG:
72 value = SharkValue::jlong_constant(constant.as_long());
73 break;
75 case T_FLOAT:
76 value = SharkValue::jfloat_constant(constant.as_float());
77 break;
79 case T_DOUBLE:
80 value = SharkValue::jdouble_constant(constant.as_double());
81 break;
83 case T_OBJECT:
84 case T_ARRAY:
85 break;
87 case T_ILLEGAL:
88 // out of memory
89 _is_loaded = false;
90 return;
92 default:
93 tty->print_cr("Unhandled type %s", type2name(constant.basic_type()));
94 ShouldNotReachHere();
95 }
97 // Handle primitive types. We create SharkValues for these
98 // now; doing so doesn't emit any code, and it allows us to
99 // delegate a bunch of stuff to the SharkValue code.
100 if (value) {
101 _value = value;
102 _is_loaded = true;
103 _is_nonzero = value->zero_checked();
104 _is_two_word = value->is_two_word();
105 return;
106 }
108 // Handle reference types. This is tricky because some
109 // ciObjects are psuedo-objects that refer to oops which
110 // have yet to be created. We need to spot the unloaded
111 // objects (which differ between ldc* and get*, thanks!)
112 ciObject *object = constant.as_object();
113 assert(type != NULL, "shouldn't be");
115 if ((! object->is_null_object()) && object->klass() == ciEnv::current()->Class_klass()) {
116 ciKlass *klass = object->klass();
117 if (! klass->is_loaded()) {
118 _is_loaded = false;
119 return;
120 }
121 }
123 if (object->is_null_object() || ! object->can_be_constant() || ! object->is_loaded()) {
124 _is_loaded = false;
125 return;
126 }
128 _value = NULL;
129 _object = object;
130 _type = type;
131 _is_loaded = true;
132 _is_nonzero = true;
133 _is_two_word = false;
134 }