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Issue 391693002: In-object double fields unboxing (for 64-bit only). (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Rebasing Created 6 years, 1 month ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "src/v8.h" 5 #include "src/v8.h"
6 6
7 #include "src/heap/objects-visiting.h" 7 #include "src/heap/objects-visiting.h"
8 8
9 namespace v8 { 9 namespace v8 {
10 namespace internal { 10 namespace internal {
11 11
12 12
13 StaticVisitorBase::VisitorId StaticVisitorBase::GetVisitorId( 13 StaticVisitorBase::VisitorId StaticVisitorBase::GetVisitorId(
14 int instance_type, int instance_size) { 14 int instance_type, int instance_size, bool has_unboxed_fields) {
15 if (instance_type < FIRST_NONSTRING_TYPE) { 15 if (instance_type < FIRST_NONSTRING_TYPE) {
16 switch (instance_type & kStringRepresentationMask) { 16 switch (instance_type & kStringRepresentationMask) {
17 case kSeqStringTag: 17 case kSeqStringTag:
18 if ((instance_type & kStringEncodingMask) == kOneByteStringTag) { 18 if ((instance_type & kStringEncodingMask) == kOneByteStringTag) {
19 return kVisitSeqOneByteString; 19 return kVisitSeqOneByteString;
20 } else { 20 } else {
21 return kVisitSeqTwoByteString; 21 return kVisitSeqTwoByteString;
22 } 22 }
23 23
24 case kConsStringTag: 24 case kConsStringTag:
25 if (IsShortcutCandidate(instance_type)) { 25 if (IsShortcutCandidate(instance_type)) {
26 return kVisitShortcutCandidate; 26 return kVisitShortcutCandidate;
27 } else { 27 } else {
28 return kVisitConsString; 28 return kVisitConsString;
29 } 29 }
30 30
31 case kSlicedStringTag: 31 case kSlicedStringTag:
32 return kVisitSlicedString; 32 return kVisitSlicedString;
33 33
34 case kExternalStringTag: 34 case kExternalStringTag:
35 return GetVisitorIdForSize(kVisitDataObject, kVisitDataObjectGeneric, 35 return GetVisitorIdForSize(kVisitDataObject, kVisitDataObjectGeneric,
36 instance_size); 36 instance_size, has_unboxed_fields);
37 } 37 }
38 UNREACHABLE(); 38 UNREACHABLE();
39 } 39 }
40 40
41 switch (instance_type) { 41 switch (instance_type) {
42 case BYTE_ARRAY_TYPE: 42 case BYTE_ARRAY_TYPE:
43 return kVisitByteArray; 43 return kVisitByteArray;
44 44
45 case FREE_SPACE_TYPE: 45 case FREE_SPACE_TYPE:
46 return kVisitFreeSpace; 46 return kVisitFreeSpace;
(...skipping 20 matching lines...) Expand all
67 return kVisitCell; 67 return kVisitCell;
68 68
69 case PROPERTY_CELL_TYPE: 69 case PROPERTY_CELL_TYPE:
70 return kVisitPropertyCell; 70 return kVisitPropertyCell;
71 71
72 case WEAK_CELL_TYPE: 72 case WEAK_CELL_TYPE:
73 return kVisitWeakCell; 73 return kVisitWeakCell;
74 74
75 case JS_SET_TYPE: 75 case JS_SET_TYPE:
76 return GetVisitorIdForSize(kVisitStruct, kVisitStructGeneric, 76 return GetVisitorIdForSize(kVisitStruct, kVisitStructGeneric,
77 JSSet::kSize); 77 JSSet::kSize, has_unboxed_fields);
78 78
79 case JS_MAP_TYPE: 79 case JS_MAP_TYPE:
80 return GetVisitorIdForSize(kVisitStruct, kVisitStructGeneric, 80 return GetVisitorIdForSize(kVisitStruct, kVisitStructGeneric,
81 JSMap::kSize); 81 JSMap::kSize, has_unboxed_fields);
82 82
83 case JS_WEAK_MAP_TYPE: 83 case JS_WEAK_MAP_TYPE:
84 case JS_WEAK_SET_TYPE: 84 case JS_WEAK_SET_TYPE:
85 return kVisitJSWeakCollection; 85 return kVisitJSWeakCollection;
86 86
87 case JS_REGEXP_TYPE: 87 case JS_REGEXP_TYPE:
88 return kVisitJSRegExp; 88 return kVisitJSRegExp;
89 89
90 case SHARED_FUNCTION_INFO_TYPE: 90 case SHARED_FUNCTION_INFO_TYPE:
91 return kVisitSharedFunctionInfo; 91 return kVisitSharedFunctionInfo;
92 92
93 case JS_PROXY_TYPE: 93 case JS_PROXY_TYPE:
94 return GetVisitorIdForSize(kVisitStruct, kVisitStructGeneric, 94 return GetVisitorIdForSize(kVisitStruct, kVisitStructGeneric,
95 JSProxy::kSize); 95 JSProxy::kSize, has_unboxed_fields);
96 96
97 case JS_FUNCTION_PROXY_TYPE: 97 case JS_FUNCTION_PROXY_TYPE:
98 return GetVisitorIdForSize(kVisitStruct, kVisitStructGeneric, 98 return GetVisitorIdForSize(kVisitStruct, kVisitStructGeneric,
99 JSFunctionProxy::kSize); 99 JSFunctionProxy::kSize, has_unboxed_fields);
100 100
101 case FOREIGN_TYPE: 101 case FOREIGN_TYPE:
102 return GetVisitorIdForSize(kVisitDataObject, kVisitDataObjectGeneric, 102 return GetVisitorIdForSize(kVisitDataObject, kVisitDataObjectGeneric,
103 Foreign::kSize); 103 Foreign::kSize, has_unboxed_fields);
104 104
105 case SYMBOL_TYPE: 105 case SYMBOL_TYPE:
106 return kVisitSymbol; 106 return kVisitSymbol;
107 107
108 case FILLER_TYPE: 108 case FILLER_TYPE:
109 return kVisitDataObjectGeneric; 109 return kVisitDataObjectGeneric;
110 110
111 case JS_ARRAY_BUFFER_TYPE: 111 case JS_ARRAY_BUFFER_TYPE:
112 return kVisitJSArrayBuffer; 112 return kVisitJSArrayBuffer;
113 113
(...skipping 10 matching lines...) Expand all
124 case JS_VALUE_TYPE: 124 case JS_VALUE_TYPE:
125 case JS_DATE_TYPE: 125 case JS_DATE_TYPE:
126 case JS_ARRAY_TYPE: 126 case JS_ARRAY_TYPE:
127 case JS_GLOBAL_PROXY_TYPE: 127 case JS_GLOBAL_PROXY_TYPE:
128 case JS_GLOBAL_OBJECT_TYPE: 128 case JS_GLOBAL_OBJECT_TYPE:
129 case JS_BUILTINS_OBJECT_TYPE: 129 case JS_BUILTINS_OBJECT_TYPE:
130 case JS_MESSAGE_OBJECT_TYPE: 130 case JS_MESSAGE_OBJECT_TYPE:
131 case JS_SET_ITERATOR_TYPE: 131 case JS_SET_ITERATOR_TYPE:
132 case JS_MAP_ITERATOR_TYPE: 132 case JS_MAP_ITERATOR_TYPE:
133 return GetVisitorIdForSize(kVisitJSObject, kVisitJSObjectGeneric, 133 return GetVisitorIdForSize(kVisitJSObject, kVisitJSObjectGeneric,
134 instance_size); 134 instance_size, has_unboxed_fields);
135 135
136 case JS_FUNCTION_TYPE: 136 case JS_FUNCTION_TYPE:
137 return kVisitJSFunction; 137 return kVisitJSFunction;
138 138
139 case HEAP_NUMBER_TYPE: 139 case HEAP_NUMBER_TYPE:
140 case MUTABLE_HEAP_NUMBER_TYPE: 140 case MUTABLE_HEAP_NUMBER_TYPE:
141 #define EXTERNAL_ARRAY_CASE(Type, type, TYPE, ctype, size) \ 141 #define EXTERNAL_ARRAY_CASE(Type, type, TYPE, ctype, size) \
142 case EXTERNAL_##TYPE##_ARRAY_TYPE: 142 case EXTERNAL_##TYPE##_ARRAY_TYPE:
143 143
144 TYPED_ARRAYS(EXTERNAL_ARRAY_CASE) 144 TYPED_ARRAYS(EXTERNAL_ARRAY_CASE)
145 return GetVisitorIdForSize(kVisitDataObject, kVisitDataObjectGeneric, 145 return GetVisitorIdForSize(kVisitDataObject, kVisitDataObjectGeneric,
146 instance_size); 146 instance_size, has_unboxed_fields);
147 #undef EXTERNAL_ARRAY_CASE 147 #undef EXTERNAL_ARRAY_CASE
148 148
149 case FIXED_UINT8_ARRAY_TYPE: 149 case FIXED_UINT8_ARRAY_TYPE:
150 case FIXED_INT8_ARRAY_TYPE: 150 case FIXED_INT8_ARRAY_TYPE:
151 case FIXED_UINT16_ARRAY_TYPE: 151 case FIXED_UINT16_ARRAY_TYPE:
152 case FIXED_INT16_ARRAY_TYPE: 152 case FIXED_INT16_ARRAY_TYPE:
153 case FIXED_UINT32_ARRAY_TYPE: 153 case FIXED_UINT32_ARRAY_TYPE:
154 case FIXED_INT32_ARRAY_TYPE: 154 case FIXED_INT32_ARRAY_TYPE:
155 case FIXED_FLOAT32_ARRAY_TYPE: 155 case FIXED_FLOAT32_ARRAY_TYPE:
156 case FIXED_UINT8_CLAMPED_ARRAY_TYPE: 156 case FIXED_UINT8_CLAMPED_ARRAY_TYPE:
157 return kVisitFixedTypedArray; 157 return kVisitFixedTypedArray;
158 158
159 case FIXED_FLOAT64_ARRAY_TYPE: 159 case FIXED_FLOAT64_ARRAY_TYPE:
160 return kVisitFixedFloat64Array; 160 return kVisitFixedFloat64Array;
161 161
162 #define MAKE_STRUCT_CASE(NAME, Name, name) case NAME##_TYPE: 162 #define MAKE_STRUCT_CASE(NAME, Name, name) case NAME##_TYPE:
163 STRUCT_LIST(MAKE_STRUCT_CASE) 163 STRUCT_LIST(MAKE_STRUCT_CASE)
164 #undef MAKE_STRUCT_CASE 164 #undef MAKE_STRUCT_CASE
165 if (instance_type == ALLOCATION_SITE_TYPE) { 165 if (instance_type == ALLOCATION_SITE_TYPE) {
166 return kVisitAllocationSite; 166 return kVisitAllocationSite;
167 } 167 }
168 168
169 return GetVisitorIdForSize(kVisitStruct, kVisitStructGeneric, 169 return GetVisitorIdForSize(kVisitStruct, kVisitStructGeneric,
170 instance_size); 170 instance_size, has_unboxed_fields);
171 171
172 default: 172 default:
173 UNREACHABLE(); 173 UNREACHABLE();
174 return kVisitorIdCount; 174 return kVisitorIdCount;
175 } 175 }
176 } 176 }
177 177
178 178
179 // We don't record weak slots during marking or scavenges. Instead we do it 179 // We don't record weak slots during marking or scavenges. Instead we do it
180 // once when we complete mark-compact cycle. Note that write barrier has no 180 // once when we complete mark-compact cycle. Note that write barrier has no
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407 407
408 408
409 template Object* VisitWeakList<JSArrayBuffer>(Heap* heap, Object* list, 409 template Object* VisitWeakList<JSArrayBuffer>(Heap* heap, Object* list,
410 WeakObjectRetainer* retainer); 410 WeakObjectRetainer* retainer);
411 411
412 412
413 template Object* VisitWeakList<AllocationSite>(Heap* heap, Object* list, 413 template Object* VisitWeakList<AllocationSite>(Heap* heap, Object* list,
414 WeakObjectRetainer* retainer); 414 WeakObjectRetainer* retainer);
415 } 415 }
416 } // namespace v8::internal 416 } // namespace v8::internal
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