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Issue 208503007: Revert "This implements allocating small typed arrays in heap." (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 6 years, 9 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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135 for (int i = 0; i < kFastElementsKindCount; ++i) { 135 for (int i = 0; i < kFastElementsKindCount; ++i) {
136 if (fast_elements_kind_sequence.Get()[i] == elements_kind) { 136 if (fast_elements_kind_sequence.Get()[i] == elements_kind) {
137 return i; 137 return i;
138 } 138 }
139 } 139 }
140 UNREACHABLE(); 140 UNREACHABLE();
141 return 0; 141 return 0;
142 } 142 }
143 143
144 144
145 ElementsKind GetNextTransitionElementsKind(ElementsKind kind) {
146 switch (kind) {
147 #define FIXED_TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size) \
148 case TYPE##_ELEMENTS: return EXTERNAL_##TYPE##_ELEMENTS;
149
150 TYPED_ARRAYS(FIXED_TYPED_ARRAY_CASE)
151 #undef FIXED_TYPED_ARRAY_CASE
152 default: {
153 int index = GetSequenceIndexFromFastElementsKind(kind);
154 return GetFastElementsKindFromSequenceIndex(index + 1);
155 }
156 }
157 }
158
159
160 ElementsKind GetNextMoreGeneralFastElementsKind(ElementsKind elements_kind, 145 ElementsKind GetNextMoreGeneralFastElementsKind(ElementsKind elements_kind,
161 bool allow_only_packed) { 146 bool allow_only_packed) {
162 ASSERT(IsFastElementsKind(elements_kind)); 147 ASSERT(IsFastElementsKind(elements_kind));
163 ASSERT(elements_kind != TERMINAL_FAST_ELEMENTS_KIND); 148 ASSERT(elements_kind != TERMINAL_FAST_ELEMENTS_KIND);
164 while (true) { 149 while (true) {
165 elements_kind = GetNextTransitionElementsKind(elements_kind); 150 int index =
151 GetSequenceIndexFromFastElementsKind(elements_kind) + 1;
152 elements_kind = GetFastElementsKindFromSequenceIndex(index);
166 if (!IsFastHoleyElementsKind(elements_kind) || !allow_only_packed) { 153 if (!IsFastHoleyElementsKind(elements_kind) || !allow_only_packed) {
167 return elements_kind; 154 return elements_kind;
168 } 155 }
169 } 156 }
170 UNREACHABLE(); 157 UNREACHABLE();
171 return TERMINAL_FAST_ELEMENTS_KIND; 158 return TERMINAL_FAST_ELEMENTS_KIND;
172 } 159 }
173 160
174 161
175 bool IsMoreGeneralElementsKindTransition(ElementsKind from_kind, 162 bool IsMoreGeneralElementsKindTransition(ElementsKind from_kind,
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191 return to_kind == FAST_HOLEY_ELEMENTS; 178 return to_kind == FAST_HOLEY_ELEMENTS;
192 case FAST_HOLEY_ELEMENTS: 179 case FAST_HOLEY_ELEMENTS:
193 return false; 180 return false;
194 default: 181 default:
195 return false; 182 return false;
196 } 183 }
197 } 184 }
198 185
199 186
200 } } // namespace v8::internal 187 } } // namespace v8::internal
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