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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 // 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/compiler.h" | 7 #include "src/compiler.h" |
| 8 | 8 |
| 9 #include "src/bootstrapper.h" | 9 #include "src/bootstrapper.h" |
| 10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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| 106 | 106 |
| 107 void CompilationInfo::Initialize(Isolate* isolate, | 107 void CompilationInfo::Initialize(Isolate* isolate, |
| 108 Mode mode, | 108 Mode mode, |
| 109 Zone* zone) { | 109 Zone* zone) { |
| 110 isolate_ = isolate; | 110 isolate_ = isolate; |
| 111 function_ = NULL; | 111 function_ = NULL; |
| 112 scope_ = NULL; | 112 scope_ = NULL; |
| 113 global_scope_ = NULL; | 113 global_scope_ = NULL; |
| 114 extension_ = NULL; | 114 extension_ = NULL; |
| 115 cached_data_ = NULL; | 115 cached_data_ = NULL; |
| 116 cached_data_mode_ = NO_CACHED_DATA; | 116 compile_options_ = ScriptCompiler::kNoCompileOptions; |
| 117 zone_ = zone; | 117 zone_ = zone; |
| 118 deferred_handles_ = NULL; | 118 deferred_handles_ = NULL; |
| 119 code_stub_ = NULL; | 119 code_stub_ = NULL; |
| 120 prologue_offset_ = Code::kPrologueOffsetNotSet; | 120 prologue_offset_ = Code::kPrologueOffsetNotSet; |
| 121 opt_count_ = shared_info().is_null() ? 0 : shared_info()->opt_count(); | 121 opt_count_ = shared_info().is_null() ? 0 : shared_info()->opt_count(); |
| 122 no_frame_ranges_ = isolate->cpu_profiler()->is_profiling() | 122 no_frame_ranges_ = isolate->cpu_profiler()->is_profiling() |
| 123 ? new List<OffsetRange>(2) : NULL; | 123 ? new List<OffsetRange>(2) : NULL; |
| 124 for (int i = 0; i < DependentCode::kGroupCount; i++) { | 124 for (int i = 0; i < DependentCode::kGroupCount; i++) { |
| 125 dependencies_[i] = NULL; | 125 dependencies_[i] = NULL; |
| 126 } | 126 } |
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| 793 | 793 |
| 794 // TODO(svenpanne) Obscure place for this, perhaps move to OnBeforeCompile? | 794 // TODO(svenpanne) Obscure place for this, perhaps move to OnBeforeCompile? |
| 795 FixedArray* array = isolate->native_context()->embedder_data(); | 795 FixedArray* array = isolate->native_context()->embedder_data(); |
| 796 script->set_context_data(array->get(0)); | 796 script->set_context_data(array->get(0)); |
| 797 | 797 |
| 798 isolate->debug()->OnBeforeCompile(script); | 798 isolate->debug()->OnBeforeCompile(script); |
| 799 | 799 |
| 800 ASSERT(info->is_eval() || info->is_global()); | 800 ASSERT(info->is_eval() || info->is_global()); |
| 801 | 801 |
| 802 bool parse_allow_lazy = | 802 bool parse_allow_lazy = |
| 803 (info->cached_data_mode() == CONSUME_CACHED_DATA || | 803 (info->compile_options() == ScriptCompiler::kConsumeParserCache || |
| 804 String::cast(script->source())->length() > FLAG_min_preparse_length) && | 804 String::cast(script->source())->length() > FLAG_min_preparse_length) && |
| 805 !DebuggerWantsEagerCompilation(info); | 805 !DebuggerWantsEagerCompilation(info); |
| 806 | 806 |
| 807 if (!parse_allow_lazy && info->cached_data_mode() != NO_CACHED_DATA) { | 807 if (!parse_allow_lazy && |
| 808 (info->compile_options() == ScriptCompiler::kProduceParserCache || |
| 809 info->compile_options() == ScriptCompiler::kConsumeParserCache)) { |
| 808 // We are going to parse eagerly, but we either 1) have cached data produced | 810 // We are going to parse eagerly, but we either 1) have cached data produced |
| 809 // by lazy parsing or 2) are asked to generate cached data. We cannot use | 811 // by lazy parsing or 2) are asked to generate cached data. We cannot use |
| 810 // the existing data, since it won't contain all the symbols we need for | 812 // the existing data, since it won't contain all the symbols we need for |
| 811 // eager parsing. In addition, it doesn't make sense to produce the data | 813 // eager parsing. In addition, it doesn't make sense to produce the data |
| 812 // when parsing eagerly. That data would contain all symbols, but no | 814 // when parsing eagerly. That data would contain all symbols, but no |
| 813 // functions, so it cannot be used to aid lazy parsing later. | 815 // functions, so it cannot be used to aid lazy parsing later. |
| 814 info->SetCachedData(NULL, NO_CACHED_DATA); | 816 info->SetCachedData(NULL, ScriptCompiler::kNoCompileOptions); |
| 815 } | 817 } |
| 816 | 818 |
| 817 Handle<SharedFunctionInfo> result; | 819 Handle<SharedFunctionInfo> result; |
| 818 | 820 |
| 819 { VMState<COMPILER> state(info->isolate()); | 821 { VMState<COMPILER> state(info->isolate()); |
| 820 if (!Parser::Parse(info, parse_allow_lazy)) { | 822 if (!Parser::Parse(info, parse_allow_lazy)) { |
| 821 return Handle<SharedFunctionInfo>::null(); | 823 return Handle<SharedFunctionInfo>::null(); |
| 822 } | 824 } |
| 823 | 825 |
| 824 FunctionLiteral* lit = info->function(); | 826 FunctionLiteral* lit = info->function(); |
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| 925 } else if (shared_info->ic_age() != isolate->heap()->global_ic_age()) { | 927 } else if (shared_info->ic_age() != isolate->heap()->global_ic_age()) { |
| 926 shared_info->ResetForNewContext(isolate->heap()->global_ic_age()); | 928 shared_info->ResetForNewContext(isolate->heap()->global_ic_age()); |
| 927 } | 929 } |
| 928 | 930 |
| 929 return isolate->factory()->NewFunctionFromSharedFunctionInfo( | 931 return isolate->factory()->NewFunctionFromSharedFunctionInfo( |
| 930 shared_info, context, NOT_TENURED); | 932 shared_info, context, NOT_TENURED); |
| 931 } | 933 } |
| 932 | 934 |
| 933 | 935 |
| 934 Handle<SharedFunctionInfo> Compiler::CompileScript( | 936 Handle<SharedFunctionInfo> Compiler::CompileScript( |
| 935 Handle<String> source, | 937 Handle<String> source, Handle<Object> script_name, int line_offset, |
| 936 Handle<Object> script_name, | 938 int column_offset, bool is_shared_cross_origin, Handle<Context> context, |
| 937 int line_offset, | 939 v8::Extension* extension, ScriptData** cached_data, |
| 938 int column_offset, | 940 ScriptCompiler::CompileOptions compile_options, NativesFlag natives) { |
| 939 bool is_shared_cross_origin, | 941 if (compile_options == ScriptCompiler::kNoCompileOptions) { |
| 940 Handle<Context> context, | |
| 941 v8::Extension* extension, | |
| 942 ScriptData** cached_data, | |
| 943 CachedDataMode cached_data_mode, | |
| 944 NativesFlag natives) { | |
| 945 if (cached_data_mode == NO_CACHED_DATA) { | |
| 946 cached_data = NULL; | 942 cached_data = NULL; |
| 947 } else if (cached_data_mode == PRODUCE_CACHED_DATA) { | 943 } else if (compile_options == ScriptCompiler::kProduceParserCache || |
| 944 compile_options == ScriptCompiler::kProduceCodeCache) { |
| 948 ASSERT(cached_data && !*cached_data); | 945 ASSERT(cached_data && !*cached_data); |
| 949 ASSERT(extension == NULL); | 946 ASSERT(extension == NULL); |
| 950 } else { | 947 } else { |
| 951 ASSERT(cached_data_mode == CONSUME_CACHED_DATA); | 948 ASSERT(compile_options == ScriptCompiler::kConsumeParserCache || |
| 949 compile_options == ScriptCompiler::kConsumeCodeCache); |
| 952 ASSERT(cached_data && *cached_data); | 950 ASSERT(cached_data && *cached_data); |
| 953 ASSERT(extension == NULL); | 951 ASSERT(extension == NULL); |
| 954 } | 952 } |
| 955 Isolate* isolate = source->GetIsolate(); | 953 Isolate* isolate = source->GetIsolate(); |
| 956 int source_length = source->length(); | 954 int source_length = source->length(); |
| 957 isolate->counters()->total_load_size()->Increment(source_length); | 955 isolate->counters()->total_load_size()->Increment(source_length); |
| 958 isolate->counters()->total_compile_size()->Increment(source_length); | 956 isolate->counters()->total_compile_size()->Increment(source_length); |
| 959 | 957 |
| 960 CompilationCache* compilation_cache = isolate->compilation_cache(); | 958 CompilationCache* compilation_cache = isolate->compilation_cache(); |
| 961 | 959 |
| 962 // Do a lookup in the compilation cache but not for extensions. | 960 // Do a lookup in the compilation cache but not for extensions. |
| 963 MaybeHandle<SharedFunctionInfo> maybe_result; | 961 MaybeHandle<SharedFunctionInfo> maybe_result; |
| 964 Handle<SharedFunctionInfo> result; | 962 Handle<SharedFunctionInfo> result; |
| 965 if (extension == NULL) { | 963 if (extension == NULL) { |
| 966 maybe_result = compilation_cache->LookupScript( | 964 maybe_result = compilation_cache->LookupScript( |
| 967 source, script_name, line_offset, column_offset, | 965 source, script_name, line_offset, column_offset, |
| 968 is_shared_cross_origin, context); | 966 is_shared_cross_origin, context); |
| 969 if (maybe_result.is_null() && FLAG_serialize_toplevel && | 967 if (maybe_result.is_null() && FLAG_serialize_toplevel && |
| 970 cached_data_mode == CONSUME_CACHED_DATA) { | 968 compile_options == ScriptCompiler::kConsumeCodeCache) { |
| 971 return CodeSerializer::Deserialize(isolate, *cached_data, source); | 969 return CodeSerializer::Deserialize(isolate, *cached_data, source); |
| 972 } | 970 } |
| 973 } | 971 } |
| 974 | 972 |
| 975 if (!maybe_result.ToHandle(&result)) { | 973 if (!maybe_result.ToHandle(&result)) { |
| 976 // No cache entry found. Compile the script. | 974 // No cache entry found. Compile the script. |
| 977 | 975 |
| 978 // Create a script object describing the script to be compiled. | 976 // Create a script object describing the script to be compiled. |
| 979 Handle<Script> script = isolate->factory()->NewScript(source); | 977 Handle<Script> script = isolate->factory()->NewScript(source); |
| 980 if (natives == NATIVES_CODE) { | 978 if (natives == NATIVES_CODE) { |
| 981 script->set_type(Smi::FromInt(Script::TYPE_NATIVE)); | 979 script->set_type(Smi::FromInt(Script::TYPE_NATIVE)); |
| 982 } | 980 } |
| 983 if (!script_name.is_null()) { | 981 if (!script_name.is_null()) { |
| 984 script->set_name(*script_name); | 982 script->set_name(*script_name); |
| 985 script->set_line_offset(Smi::FromInt(line_offset)); | 983 script->set_line_offset(Smi::FromInt(line_offset)); |
| 986 script->set_column_offset(Smi::FromInt(column_offset)); | 984 script->set_column_offset(Smi::FromInt(column_offset)); |
| 987 } | 985 } |
| 988 script->set_is_shared_cross_origin(is_shared_cross_origin); | 986 script->set_is_shared_cross_origin(is_shared_cross_origin); |
| 989 | 987 |
| 990 // Compile the function and add it to the cache. | 988 // Compile the function and add it to the cache. |
| 991 CompilationInfoWithZone info(script); | 989 CompilationInfoWithZone info(script); |
| 992 info.MarkAsGlobal(); | 990 info.MarkAsGlobal(); |
| 993 info.SetCachedData(cached_data, cached_data_mode); | 991 info.SetCachedData(cached_data, compile_options); |
| 994 info.SetExtension(extension); | 992 info.SetExtension(extension); |
| 995 info.SetContext(context); | 993 info.SetContext(context); |
| 996 if (FLAG_serialize_toplevel && cached_data_mode == PRODUCE_CACHED_DATA) { | 994 if (FLAG_serialize_toplevel && |
| 995 compile_options == ScriptCompiler::kProduceCodeCache) { |
| 997 info.PrepareForSerializing(); | 996 info.PrepareForSerializing(); |
| 998 } | 997 } |
| 999 if (FLAG_use_strict) info.SetStrictMode(STRICT); | 998 if (FLAG_use_strict) info.SetStrictMode(STRICT); |
| 1000 | 999 |
| 1001 result = CompileToplevel(&info); | 1000 result = CompileToplevel(&info); |
| 1002 if (extension == NULL && !result.is_null() && !result->dont_cache()) { | 1001 if (extension == NULL && !result.is_null() && !result->dont_cache()) { |
| 1003 compilation_cache->PutScript(source, context, result); | 1002 compilation_cache->PutScript(source, context, result); |
| 1004 if (FLAG_serialize_toplevel && cached_data_mode == PRODUCE_CACHED_DATA) { | 1003 if (FLAG_serialize_toplevel && |
| 1004 compile_options == ScriptCompiler::kProduceCodeCache) { |
| 1005 *cached_data = CodeSerializer::Serialize(isolate, result, source); | 1005 *cached_data = CodeSerializer::Serialize(isolate, result, source); |
| 1006 } | 1006 } |
| 1007 } | 1007 } |
| 1008 |
| 1008 if (result.is_null()) isolate->ReportPendingMessages(); | 1009 if (result.is_null()) isolate->ReportPendingMessages(); |
| 1009 } else if (result->ic_age() != isolate->heap()->global_ic_age()) { | 1010 } else if (result->ic_age() != isolate->heap()->global_ic_age()) { |
| 1010 result->ResetForNewContext(isolate->heap()->global_ic_age()); | 1011 result->ResetForNewContext(isolate->heap()->global_ic_age()); |
| 1011 } | 1012 } |
| 1012 return result; | 1013 return result; |
| 1013 } | 1014 } |
| 1014 | 1015 |
| 1015 | 1016 |
| 1016 Handle<SharedFunctionInfo> Compiler::BuildFunctionInfo(FunctionLiteral* literal, | 1017 Handle<SharedFunctionInfo> Compiler::BuildFunctionInfo(FunctionLiteral* literal, |
| 1017 Handle<Script> script) { | 1018 Handle<Script> script) { |
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| 1334 AllowHandleDereference allow_deref; | 1335 AllowHandleDereference allow_deref; |
| 1335 bool tracing_on = info()->IsStub() | 1336 bool tracing_on = info()->IsStub() |
| 1336 ? FLAG_trace_hydrogen_stubs | 1337 ? FLAG_trace_hydrogen_stubs |
| 1337 : (FLAG_trace_hydrogen && | 1338 : (FLAG_trace_hydrogen && |
| 1338 info()->closure()->PassesFilter(FLAG_trace_hydrogen_filter)); | 1339 info()->closure()->PassesFilter(FLAG_trace_hydrogen_filter)); |
| 1339 return (tracing_on && | 1340 return (tracing_on && |
| 1340 base::OS::StrChr(const_cast<char*>(FLAG_trace_phase), name_[0]) != NULL); | 1341 base::OS::StrChr(const_cast<char*>(FLAG_trace_phase), name_[0]) != NULL); |
| 1341 } | 1342 } |
| 1342 | 1343 |
| 1343 } } // namespace v8::internal | 1344 } } // namespace v8::internal |
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