OLD | NEW |
---|---|
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 |
(...skipping 837 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... | |
848 if (FLAG_trace_ic) PrintF("[LoadIC : +#length /string]\n"); | 848 if (FLAG_trace_ic) PrintF("[LoadIC : +#length /string]\n"); |
849 #endif | 849 #endif |
850 } | 850 } |
851 // Get the string if we have a string wrapper object. | 851 // Get the string if we have a string wrapper object. |
852 Handle<Object> string = object->IsJSValue() | 852 Handle<Object> string = object->IsJSValue() |
853 ? Handle<Object>(Handle<JSValue>::cast(object)->value(), isolate()) | 853 ? Handle<Object>(Handle<JSValue>::cast(object)->value(), isolate()) |
854 : object; | 854 : object; |
855 return Smi::FromInt(String::cast(*string)->length()); | 855 return Smi::FromInt(String::cast(*string)->length()); |
856 } | 856 } |
857 | 857 |
858 // Use specialized code for getting the length of arrays. | |
859 if (object->IsJSArray() && | |
860 name->Equals(isolate()->heap()->length_string())) { | |
861 Handle<Code> stub; | |
862 if (state == UNINITIALIZED) { | |
863 stub = pre_monomorphic_stub(); | |
864 } else if (state == PREMONOMORPHIC) { | |
865 ArrayLengthStub array_length_stub(kind()); | |
866 stub = array_length_stub.GetCode(isolate()); | |
867 } else if (state != MEGAMORPHIC) { | |
868 ASSERT(state != GENERIC); | |
869 stub = megamorphic_stub(); | |
870 } | |
871 if (!stub.is_null()) { | |
872 set_target(*stub); | |
873 #ifdef DEBUG | |
874 if (FLAG_trace_ic) PrintF("[LoadIC : +#length /array]\n"); | |
875 #endif | |
876 } | |
877 return JSArray::cast(*object)->length(); | |
878 } | |
879 | |
880 // Use specialized code for getting prototype of functions. | 858 // Use specialized code for getting prototype of functions. |
881 if (object->IsJSFunction() && | 859 if (object->IsJSFunction() && |
882 name->Equals(isolate()->heap()->prototype_string()) && | 860 name->Equals(isolate()->heap()->prototype_string()) && |
883 Handle<JSFunction>::cast(object)->should_have_prototype()) { | 861 Handle<JSFunction>::cast(object)->should_have_prototype()) { |
884 Handle<Code> stub; | 862 Handle<Code> stub; |
885 if (state == UNINITIALIZED) { | 863 if (state == UNINITIALIZED) { |
886 stub = pre_monomorphic_stub(); | 864 stub = pre_monomorphic_stub(); |
887 } else if (state == PREMONOMORPHIC) { | 865 } else if (state == PREMONOMORPHIC) { |
888 FunctionPrototypeStub function_prototype_stub(kind()); | 866 FunctionPrototypeStub function_prototype_stub(kind()); |
889 stub = function_prototype_stub.GetCode(isolate()); | 867 stub = function_prototype_stub.GetCode(isolate()); |
(...skipping 44 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... | |
934 Object::GetProperty(object, object, &lookup, name, &attr); | 912 Object::GetProperty(object, object, &lookup, name, &attr); |
935 RETURN_IF_EMPTY_HANDLE(isolate(), result); | 913 RETURN_IF_EMPTY_HANDLE(isolate(), result); |
936 // If the property is not present, check if we need to throw an | 914 // If the property is not present, check if we need to throw an |
937 // exception. | 915 // exception. |
938 if (attr == ABSENT && IsUndeclaredGlobal(object)) { | 916 if (attr == ABSENT && IsUndeclaredGlobal(object)) { |
939 return ReferenceError("not_defined", name); | 917 return ReferenceError("not_defined", name); |
940 } | 918 } |
941 return *result; | 919 return *result; |
942 } | 920 } |
943 | 921 |
922 if (object->IsJSArray() && | |
danno
2013/03/12 11:16:16
Doesn't GetProperty already handle this (it should
| |
923 name->Equals(isolate()->heap()->length_string())) { | |
924 return JSArray::cast(*object)->length(); | |
925 } | |
944 // Get the property. | 926 // Get the property. |
945 return object->GetProperty(*object, &lookup, *name, &attr); | 927 return object->GetProperty(*object, &lookup, *name, &attr); |
946 } | 928 } |
947 | 929 |
948 | 930 |
949 static bool AddOneReceiverMapIfMissing(MapHandleList* receiver_maps, | 931 static bool AddOneReceiverMapIfMissing(MapHandleList* receiver_maps, |
950 Handle<Map> new_receiver_map) { | 932 Handle<Map> new_receiver_map) { |
951 ASSERT(!new_receiver_map.is_null()); | 933 ASSERT(!new_receiver_map.is_null()); |
952 for (int current = 0; current < receiver_maps->length(); ++current) { | 934 for (int current = 0; current < receiver_maps->length(); ++current) { |
953 if (!receiver_maps->at(current).is_null() && | 935 if (!receiver_maps->at(current).is_null() && |
(...skipping 262 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... | |
1216 return isolate()->stub_cache()->ComputeLoadCallback( | 1198 return isolate()->stub_cache()->ComputeLoadCallback( |
1217 name, receiver, holder, info); | 1199 name, receiver, holder, info); |
1218 } else if (callback->IsAccessorPair()) { | 1200 } else if (callback->IsAccessorPair()) { |
1219 Handle<Object> getter(Handle<AccessorPair>::cast(callback)->getter(), | 1201 Handle<Object> getter(Handle<AccessorPair>::cast(callback)->getter(), |
1220 isolate()); | 1202 isolate()); |
1221 if (!getter->IsJSFunction()) break; | 1203 if (!getter->IsJSFunction()) break; |
1222 if (holder->IsGlobalObject()) break; | 1204 if (holder->IsGlobalObject()) break; |
1223 if (!holder->HasFastProperties()) break; | 1205 if (!holder->HasFastProperties()) break; |
1224 return isolate()->stub_cache()->ComputeLoadViaGetter( | 1206 return isolate()->stub_cache()->ComputeLoadViaGetter( |
1225 name, receiver, holder, Handle<JSFunction>::cast(getter)); | 1207 name, receiver, holder, Handle<JSFunction>::cast(getter)); |
1208 } else if (receiver->IsJSArray() && | |
1209 name->Equals(isolate()->heap()->length_string())) { | |
1210 return isolate()->stub_cache()->ComputeLoadArrayLength( | |
danno
2013/03/12 11:16:16
why not just:
Property index =
PropertyIndex::
| |
1211 name, receiver, holder); | |
1226 } | 1212 } |
1227 // TODO(dcarney): Handle correctly. | 1213 // TODO(dcarney): Handle correctly. |
1228 if (callback->IsDeclaredAccessorInfo()) break; | 1214 if (callback->IsDeclaredAccessorInfo()) break; |
1229 ASSERT(callback->IsForeign()); | 1215 ASSERT(callback->IsForeign()); |
1230 // No IC support for old-style native accessors. | 1216 // No IC support for old-style native accessors. |
1231 break; | 1217 break; |
1232 } | 1218 } |
1233 case INTERCEPTOR: | 1219 case INTERCEPTOR: |
1234 ASSERT(HasInterceptorGetter(*holder)); | 1220 ASSERT(HasInterceptorGetter(*holder)); |
1235 return isolate()->stub_cache()->ComputeLoadInterceptor( | 1221 return isolate()->stub_cache()->ComputeLoadInterceptor( |
(...skipping 1501 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... | |
2737 #undef ADDR | 2723 #undef ADDR |
2738 }; | 2724 }; |
2739 | 2725 |
2740 | 2726 |
2741 Address IC::AddressFromUtilityId(IC::UtilityId id) { | 2727 Address IC::AddressFromUtilityId(IC::UtilityId id) { |
2742 return IC_utilities[id]; | 2728 return IC_utilities[id]; |
2743 } | 2729 } |
2744 | 2730 |
2745 | 2731 |
2746 } } // namespace v8::internal | 2732 } } // namespace v8::internal |
OLD | NEW |