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Issue 330303002: Add machinery to support arguments escaping to safe builtins (Closed) Base URL: https://github.com/v8/v8.git@master
Patch Set: Created 6 years, 6 months ago
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1 // Copyright 2013 the V8 project authors. All rights reserved. 1 // Copyright 2013 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/accessors.h" 7 #include "src/accessors.h"
8 #include "src/allocation-site-scopes.h" 8 #include "src/allocation-site-scopes.h"
9 #include "src/api.h" 9 #include "src/api.h"
10 #include "src/arguments.h" 10 #include "src/arguments.h"
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9870 ASSERT(shrink_by % kEntryLength == 0); 9870 ASSERT(shrink_by % kEntryLength == 0);
9871 ASSERT(shrink_by <= code_map->length() - kEntriesStart); 9871 ASSERT(shrink_by <= code_map->length() - kEntriesStart);
9872 // Always trim even when array is cleared because of heap verifier. 9872 // Always trim even when array is cleared because of heap verifier.
9873 RightTrimFixedArray<Heap::FROM_GC>(GetHeap(), code_map, shrink_by); 9873 RightTrimFixedArray<Heap::FROM_GC>(GetHeap(), code_map, shrink_by);
9874 if (code_map->length() == kEntriesStart) { 9874 if (code_map->length() == kEntriesStart) {
9875 ClearOptimizedCodeMap(); 9875 ClearOptimizedCodeMap();
9876 } 9876 }
9877 } 9877 }
9878 9878
9879 9879
9880 bool SharedFunctionInfo::CanHandleArgumentsSafely() {
9881 if (!HasBuiltinFunctionId()) return false;
9882 switch (builtin_function_id()) {
9883 default: return false;
9884 }
9885 UNREACHABLE();
9886 }
9887
9888
9880 void JSObject::OptimizeAsPrototype(Handle<JSObject> object) { 9889 void JSObject::OptimizeAsPrototype(Handle<JSObject> object) {
9881 if (object->IsGlobalObject()) return; 9890 if (object->IsGlobalObject()) return;
9882 9891
9883 // Make sure prototypes are fast objects and their maps have the bit set 9892 // Make sure prototypes are fast objects and their maps have the bit set
9884 // so they remain fast. 9893 // so they remain fast.
9885 if (!object->HasFastProperties()) { 9894 if (!object->HasFastProperties()) {
9886 TransformToFastProperties(object, 0); 9895 TransformToFastProperties(object, 0);
9887 } 9896 }
9888 } 9897 }
9889 9898
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16954 #define ERROR_MESSAGES_TEXTS(C, T) T, 16963 #define ERROR_MESSAGES_TEXTS(C, T) T,
16955 static const char* error_messages_[] = { 16964 static const char* error_messages_[] = {
16956 ERROR_MESSAGES_LIST(ERROR_MESSAGES_TEXTS) 16965 ERROR_MESSAGES_LIST(ERROR_MESSAGES_TEXTS)
16957 }; 16966 };
16958 #undef ERROR_MESSAGES_TEXTS 16967 #undef ERROR_MESSAGES_TEXTS
16959 return error_messages_[reason]; 16968 return error_messages_[reason];
16960 } 16969 }
16961 16970
16962 16971
16963 } } // namespace v8::internal 16972 } } // namespace v8::internal
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