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Issue 8052029: Pregenerate a RecordWrite stub that we need in the new CallFunctionStub (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: '' Created 9 years, 2 months 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 // 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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48 memset(primary_, 0, sizeof(primary_[0]) * StubCache::kPrimaryTableSize); 48 memset(primary_, 0, sizeof(primary_[0]) * StubCache::kPrimaryTableSize);
49 memset(secondary_, 0, sizeof(secondary_[0]) * StubCache::kSecondaryTableSize); 49 memset(secondary_, 0, sizeof(secondary_[0]) * StubCache::kSecondaryTableSize);
50 } 50 }
51 51
52 52
53 void StubCache::Initialize(bool create_heap_objects) { 53 void StubCache::Initialize(bool create_heap_objects) {
54 ASSERT(IsPowerOf2(kPrimaryTableSize)); 54 ASSERT(IsPowerOf2(kPrimaryTableSize));
55 ASSERT(IsPowerOf2(kSecondaryTableSize)); 55 ASSERT(IsPowerOf2(kSecondaryTableSize));
56 if (create_heap_objects) { 56 if (create_heap_objects) {
57 HandleScope scope; 57 HandleScope scope;
58 Clear(); 58 Code* empty = isolate_->builtins()->builtin(Builtins::kIllegal);
59 for (int i = 0; i < kPrimaryTableSize; i++) {
60 primary_[i].key = heap()->empty_string();
61 primary_[i].value = empty;
62 }
63 for (int j = 0; j < kSecondaryTableSize; j++) {
64 secondary_[j].key = heap()->empty_string();
65 secondary_[j].value = empty;
66 }
59 } 67 }
60 } 68 }
61 69
62 70
63 Code* StubCache::Set(String* name, Map* map, Code* code) { 71 Code* StubCache::Set(String* name, Map* map, Code* code) {
64 // Get the flags from the code. 72 // Get the flags from the code.
65 Code::Flags flags = Code::RemoveTypeFromFlags(code->flags()); 73 Code::Flags flags = Code::RemoveTypeFromFlags(code->flags());
66 74
67 // Validate that the name does not move on scavenge, and that we 75 // Validate that the name does not move on scavenge, and that we
68 // can use identity checks instead of string equality checks. 76 // can use identity checks instead of string equality checks.
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1092 if (!maybe_probe->ToObject(&probe)) return maybe_probe; 1100 if (!maybe_probe->ToObject(&probe)) return maybe_probe;
1093 } 1101 }
1094 if (!probe->IsUndefined()) return probe; 1102 if (!probe->IsUndefined()) return probe;
1095 StubCompiler compiler; 1103 StubCompiler compiler;
1096 return FillCache(isolate_, compiler.CompileCallDebugPrepareStepIn(flags)); 1104 return FillCache(isolate_, compiler.CompileCallDebugPrepareStepIn(flags));
1097 } 1105 }
1098 #endif 1106 #endif
1099 1107
1100 1108
1101 void StubCache::Clear() { 1109 void StubCache::Clear() {
1110 Code* empty = isolate_->builtins()->builtin(Builtins::kIllegal);
1102 for (int i = 0; i < kPrimaryTableSize; i++) { 1111 for (int i = 0; i < kPrimaryTableSize; i++) {
1103 primary_[i].key = heap()->empty_string(); 1112 Code* code = primary_[i].value;
1104 primary_[i].value = isolate_->builtins()->builtin( 1113 if (code != empty && !code->is_pregenerated()) {
1105 Builtins::kIllegal); 1114 primary_[i].key = heap()->empty_string();
1115 primary_[i].value = empty;
1116 }
1106 } 1117 }
1107 for (int j = 0; j < kSecondaryTableSize; j++) { 1118 for (int j = 0; j < kSecondaryTableSize; j++) {
1108 secondary_[j].key = heap()->empty_string(); 1119 Code* code = secondary_[j].value;
1109 secondary_[j].value = isolate_->builtins()->builtin( 1120 if (code != empty && !code->is_pregenerated()) {
1110 Builtins::kIllegal); 1121 secondary_[j].key = heap()->empty_string();
1122 secondary_[j].value = empty;
1123 }
1111 } 1124 }
1112 } 1125 }
1113 1126
1114 1127
1115 void StubCache::CollectMatchingMaps(SmallMapList* types, 1128 void StubCache::CollectMatchingMaps(SmallMapList* types,
1116 String* name, 1129 String* name,
1117 Code::Flags flags) { 1130 Code::Flags flags) {
1118 for (int i = 0; i < kPrimaryTableSize; i++) { 1131 for (int i = 0; i < kPrimaryTableSize; i++) {
1119 if (primary_[i].key == name) { 1132 if (primary_[i].key == name) {
1120 Map* map = primary_[i].value->FindFirstMap(); 1133 Map* map = primary_[i].value->FindFirstMap();
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1833 expected_receiver_type_ = 1846 expected_receiver_type_ =
1834 FunctionTemplateInfo::cast(signature->receiver()); 1847 FunctionTemplateInfo::cast(signature->receiver());
1835 } 1848 }
1836 } 1849 }
1837 1850
1838 is_simple_api_call_ = true; 1851 is_simple_api_call_ = true;
1839 } 1852 }
1840 1853
1841 1854
1842 } } // namespace v8::internal 1855 } } // namespace v8::internal
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