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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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350 GetParameter(1), | 350 GetParameter(1), |
351 static_cast<HValue*>(NULL), | 351 static_cast<HValue*>(NULL), |
352 FAST_ELEMENTS); | 352 FAST_ELEMENTS); |
353 IfBuilder checker(this); | 353 IfBuilder checker(this); |
354 checker.IfNot<HCompareObjectEqAndBranch, HValue*>(allocation_site, | 354 checker.IfNot<HCompareObjectEqAndBranch, HValue*>(allocation_site, |
355 undefined); | 355 undefined); |
356 checker.Then(); | 356 checker.Then(); |
357 | 357 |
358 HObjectAccess access = HObjectAccess::ForAllocationSiteTransitionInfo(); | 358 HObjectAccess access = HObjectAccess::ForAllocationSiteTransitionInfo(); |
359 HInstruction* boilerplate = Add<HLoadNamedField>(allocation_site, access); | 359 HInstruction* boilerplate = Add<HLoadNamedField>(allocation_site, access); |
360 HValue* push_value; | |
361 if (mode == FastCloneShallowArrayStub::CLONE_ANY_ELEMENTS) { | 360 if (mode == FastCloneShallowArrayStub::CLONE_ANY_ELEMENTS) { |
362 HValue* elements = AddLoadElements(boilerplate); | 361 HValue* elements = AddLoadElements(boilerplate); |
363 | 362 |
364 IfBuilder if_fixed_cow(this); | 363 IfBuilder if_fixed_cow(this); |
365 if_fixed_cow.If<HCompareMap>(elements, factory->fixed_cow_array_map()); | 364 if_fixed_cow.If<HCompareMap>(elements, factory->fixed_cow_array_map()); |
366 if_fixed_cow.Then(); | 365 if_fixed_cow.Then(); |
367 push_value = BuildCloneShallowArray(boilerplate, | 366 environment()->Push(BuildCloneShallowArray(boilerplate, |
368 allocation_site, | 367 allocation_site, |
369 alloc_site_mode, | 368 alloc_site_mode, |
370 FAST_ELEMENTS, | 369 FAST_ELEMENTS, |
371 0/*copy-on-write*/); | 370 0/*copy-on-write*/)); |
372 environment()->Push(push_value); | |
373 if_fixed_cow.Else(); | 371 if_fixed_cow.Else(); |
374 | 372 |
375 IfBuilder if_fixed(this); | 373 IfBuilder if_fixed(this); |
376 if_fixed.If<HCompareMap>(elements, factory->fixed_array_map()); | 374 if_fixed.If<HCompareMap>(elements, factory->fixed_array_map()); |
377 if_fixed.Then(); | 375 if_fixed.Then(); |
378 push_value = BuildCloneShallowArray(boilerplate, | 376 environment()->Push(BuildCloneShallowArray(boilerplate, |
379 allocation_site, | 377 allocation_site, |
380 alloc_site_mode, | 378 alloc_site_mode, |
381 FAST_ELEMENTS, | 379 FAST_ELEMENTS, |
382 length); | 380 length)); |
383 environment()->Push(push_value); | |
384 if_fixed.Else(); | 381 if_fixed.Else(); |
385 push_value = BuildCloneShallowArray(boilerplate, | 382 environment()->Push(BuildCloneShallowArray(boilerplate, |
386 allocation_site, | 383 allocation_site, |
387 alloc_site_mode, | 384 alloc_site_mode, |
388 FAST_DOUBLE_ELEMENTS, | 385 FAST_DOUBLE_ELEMENTS, |
389 length); | 386 length)); |
390 environment()->Push(push_value); | |
391 } else { | 387 } else { |
392 ElementsKind elements_kind = casted_stub()->ComputeElementsKind(); | 388 ElementsKind elements_kind = casted_stub()->ComputeElementsKind(); |
393 push_value = BuildCloneShallowArray(boilerplate, | 389 environment()->Push(BuildCloneShallowArray(boilerplate, |
394 allocation_site, | 390 allocation_site, |
395 alloc_site_mode, | 391 alloc_site_mode, |
396 elements_kind, | 392 elements_kind, |
397 length); | 393 length)); |
398 environment()->Push(push_value); | |
399 } | 394 } |
400 | 395 |
401 checker.ElseDeopt("Uninitialized boilerplate literals"); | 396 checker.ElseDeopt("Uninitialized boilerplate literals"); |
402 checker.End(); | 397 checker.End(); |
403 | 398 |
404 return environment()->Pop(); | 399 return environment()->Pop(); |
405 } | 400 } |
406 | 401 |
407 | 402 |
408 Handle<Code> FastCloneShallowArrayStub::GenerateCode(Isolate* isolate) { | 403 Handle<Code> FastCloneShallowArrayStub::GenerateCode(Isolate* isolate) { |
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916 Handle<Code> ElementsTransitionAndStoreStub::GenerateCode(Isolate* isolate) { | 911 Handle<Code> ElementsTransitionAndStoreStub::GenerateCode(Isolate* isolate) { |
917 return DoGenerateCode(isolate, this); | 912 return DoGenerateCode(isolate, this); |
918 } | 913 } |
919 | 914 |
920 | 915 |
921 void CodeStubGraphBuilderBase::BuildInstallOptimizedCode( | 916 void CodeStubGraphBuilderBase::BuildInstallOptimizedCode( |
922 HValue* js_function, | 917 HValue* js_function, |
923 HValue* native_context, | 918 HValue* native_context, |
924 HValue* code_object) { | 919 HValue* code_object) { |
925 Counters* counters = isolate()->counters(); | 920 Counters* counters = isolate()->counters(); |
926 AddIncrementCounter(counters->fast_new_closure_install_optimized()); | 921 AddIncrementCounter(counters->fast_new_closure_install_optimized(), |
| 922 context()); |
927 | 923 |
928 // TODO(fschneider): Idea: store proper code pointers in the optimized code | 924 // TODO(fschneider): Idea: store proper code pointers in the optimized code |
929 // map and either unmangle them on marking or do nothing as the whole map is | 925 // map and either unmangle them on marking or do nothing as the whole map is |
930 // discarded on major GC anyway. | 926 // discarded on major GC anyway. |
931 Add<HStoreCodeEntry>(js_function, code_object); | 927 Add<HStoreCodeEntry>(js_function, code_object); |
932 | 928 |
933 // Now link a function into a list of optimized functions. | 929 // Now link a function into a list of optimized functions. |
934 HValue* optimized_functions_list = Add<HLoadNamedField>(native_context, | 930 HValue* optimized_functions_list = Add<HLoadNamedField>(native_context, |
935 HObjectAccess::ForContextSlot(Context::OPTIMIZED_FUNCTIONS_LIST)); | 931 HObjectAccess::ForContextSlot(Context::OPTIMIZED_FUNCTIONS_LIST)); |
936 Add<HStoreNamedField>(js_function, | 932 Add<HStoreNamedField>(js_function, |
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964 HInstruction* optimized_map = Add<HLoadNamedField>(shared_info, | 960 HInstruction* optimized_map = Add<HLoadNamedField>(shared_info, |
965 HObjectAccess::ForOptimizedCodeMap()); | 961 HObjectAccess::ForOptimizedCodeMap()); |
966 HValue* null_constant = Add<HConstant>(0); | 962 HValue* null_constant = Add<HConstant>(0); |
967 is_optimized.If<HCompareObjectEqAndBranch>(optimized_map, null_constant); | 963 is_optimized.If<HCompareObjectEqAndBranch>(optimized_map, null_constant); |
968 is_optimized.Then(); | 964 is_optimized.Then(); |
969 { | 965 { |
970 BuildInstallCode(js_function, shared_info); | 966 BuildInstallCode(js_function, shared_info); |
971 } | 967 } |
972 is_optimized.Else(); | 968 is_optimized.Else(); |
973 { | 969 { |
974 AddIncrementCounter(counters->fast_new_closure_try_optimized()); | 970 AddIncrementCounter(counters->fast_new_closure_try_optimized(), context()); |
975 // optimized_map points to fixed array of 3-element entries | 971 // optimized_map points to fixed array of 3-element entries |
976 // (native context, optimized code, literals). | 972 // (native context, optimized code, literals). |
977 // Map must never be empty, so check the first elements. | 973 // Map must never be empty, so check the first elements. |
978 Label install_optimized; | 974 Label install_optimized; |
979 HValue* first_context_slot = Add<HLoadNamedField>(optimized_map, | 975 HValue* first_context_slot = Add<HLoadNamedField>(optimized_map, |
980 HObjectAccess::ForFirstContextSlot()); | 976 HObjectAccess::ForFirstContextSlot()); |
981 IfBuilder already_in(this); | 977 IfBuilder already_in(this); |
982 already_in.If<HCompareObjectEqAndBranch>(native_context, | 978 already_in.If<HCompareObjectEqAndBranch>(native_context, |
983 first_context_slot); | 979 first_context_slot); |
984 already_in.Then(); | 980 already_in.Then(); |
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1053 Counters* counters = isolate()->counters(); | 1049 Counters* counters = isolate()->counters(); |
1054 Factory* factory = isolate()->factory(); | 1050 Factory* factory = isolate()->factory(); |
1055 HInstruction* empty_fixed_array = | 1051 HInstruction* empty_fixed_array = |
1056 Add<HConstant>(factory->empty_fixed_array()); | 1052 Add<HConstant>(factory->empty_fixed_array()); |
1057 HValue* shared_info = GetParameter(0); | 1053 HValue* shared_info = GetParameter(0); |
1058 | 1054 |
1059 // Create a new closure from the given function info in new space | 1055 // Create a new closure from the given function info in new space |
1060 HValue* size = Add<HConstant>(JSFunction::kSize); | 1056 HValue* size = Add<HConstant>(JSFunction::kSize); |
1061 HInstruction* js_function = Add<HAllocate>(size, HType::JSObject(), | 1057 HInstruction* js_function = Add<HAllocate>(size, HType::JSObject(), |
1062 NOT_TENURED, JS_FUNCTION_TYPE); | 1058 NOT_TENURED, JS_FUNCTION_TYPE); |
1063 AddIncrementCounter(counters->fast_new_closure_total()); | 1059 AddIncrementCounter(counters->fast_new_closure_total(), context()); |
1064 | 1060 |
1065 int map_index = Context::FunctionMapIndex(casted_stub()->language_mode(), | 1061 int map_index = Context::FunctionMapIndex(casted_stub()->language_mode(), |
1066 casted_stub()->is_generator()); | 1062 casted_stub()->is_generator()); |
1067 | 1063 |
1068 // Compute the function map in the current native context and set that | 1064 // Compute the function map in the current native context and set that |
1069 // as the map of the allocated object. | 1065 // as the map of the allocated object. |
1070 HInstruction* native_context = BuildGetNativeContext(); | 1066 HInstruction* native_context = BuildGetNativeContext(); |
1071 HInstruction* map_slot_value = Add<HLoadNamedField>(native_context, | 1067 HInstruction* map_slot_value = Add<HLoadNamedField>(native_context, |
1072 HObjectAccess::ForContextSlot(map_index)); | 1068 HObjectAccess::ForContextSlot(map_index)); |
1073 Add<HStoreNamedField>(js_function, HObjectAccess::ForMap(), map_slot_value); | 1069 Add<HStoreNamedField>(js_function, HObjectAccess::ForMap(), map_slot_value); |
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1101 return js_function; | 1097 return js_function; |
1102 } | 1098 } |
1103 | 1099 |
1104 | 1100 |
1105 Handle<Code> FastNewClosureStub::GenerateCode(Isolate* isolate) { | 1101 Handle<Code> FastNewClosureStub::GenerateCode(Isolate* isolate) { |
1106 return DoGenerateCode(isolate, this); | 1102 return DoGenerateCode(isolate, this); |
1107 } | 1103 } |
1108 | 1104 |
1109 | 1105 |
1110 } } // namespace v8::internal | 1106 } } // namespace v8::internal |
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