--- node/common.gypi +++ node/common.gypi @@ -174,7 +174,7 @@ 'MSVC_runtimeType': 2 # MultiThreadedDLL (/MD) }], ['llvm_version=="0.0"', { - 'lto': ' -flto=4 -fuse-linker-plugin -ffat-lto-objects ', # GCC + 'lto': ' -flto=4 -ffat-lto-objects ', # GCC }, { 'lto': ' -flto ', # Clang }], --- node/deps/v8/include/v8-initialization.h +++ node/deps/v8/include/v8-initialization.h @@ -89,6 +89,10 @@ class V8_EXPORT V8 { static void SetFlagsFromCommandLine(int* argc, char** argv, bool remove_flags); + static void EnableCompilationForSourcelessUse(); + static void DisableCompilationForSourcelessUse(); + static void FixSourcelessScript(Isolate* v8_isolate, Local script); + /** Get the version string. */ static const char* GetVersion(); --- node/deps/v8/src/api/api.cc +++ node/deps/v8/src/api/api.cc @@ -706,6 +706,29 @@ void V8::SetFlagsFromCommandLine(int* argc, char** argv, bool remove_flags) { HelpOptions(HelpOptions::kDontExit)); } +bool save_lazy; +bool save_predictable; + +void V8::EnableCompilationForSourcelessUse() { + save_lazy = i::FLAG_lazy; + i::FLAG_lazy = false; + save_predictable = i::FLAG_predictable; + i::FLAG_predictable = true; +} + +void V8::DisableCompilationForSourcelessUse() { + i::FLAG_lazy = save_lazy; + i::FLAG_predictable = save_predictable; +} + +void V8::FixSourcelessScript(Isolate* v8_isolate, Local unbound_script) { + auto isolate = reinterpret_cast(v8_isolate); + auto function_info = + i::Handle::cast(Utils::OpenHandle(*unbound_script)); + i::Handle script(i::Script::cast(function_info->script()), isolate); + script->set_source(i::ReadOnlyRoots(isolate).undefined_value()); +} + RegisteredExtension* RegisteredExtension::first_extension_ = nullptr; RegisteredExtension::RegisteredExtension(std::unique_ptr extension) --- node/deps/v8/src/codegen/compiler.cc +++ node/deps/v8/src/codegen/compiler.cc @@ -3026,7 +3026,7 @@ MaybeHandle GetSharedFunctionInfoForScriptImpl( // First check per-isolate compilation cache. maybe_result = compilation_cache->LookupScript(source, script_details, language_mode); - if (!maybe_result.is_null()) { + if (!maybe_result.is_null() && source_length) { compile_timer.set_hit_isolate_cache(); } else if (can_consume_code_cache) { compile_timer.set_consuming_code_cache(); --- node/deps/v8/src/objects/js-function.cc +++ node/deps/v8/src/objects/js-function.cc @@ -1207,6 +1207,9 @@ Handle JSFunction::ToString(Handle function) { Handle maybe_class_positions = JSReceiver::GetDataProperty( isolate, function, isolate->factory()->class_positions_symbol()); if (maybe_class_positions->IsClassPositions()) { + if (String::cast(Script::cast(shared_info->script()).source()).IsUndefined(isolate)) { + return isolate->factory()->NewStringFromAsciiChecked("class {}"); + } ClassPositions class_positions = ClassPositions::cast(*maybe_class_positions); int start_position = class_positions.start(); --- node/deps/v8/src/objects/shared-function-info-inl.h +++ node/deps/v8/src/objects/shared-function-info-inl.h @@ -636,6 +636,14 @@ bool SharedFunctionInfo::ShouldFlushCode( } if (!data.IsBytecodeArray()) return false; + Object script_obj = script(); + if (!script_obj.IsUndefined()) { + Script script = Script::cast(script_obj); + if (script.source().IsUndefined()) { + return false; + } + } + if (IsStressFlushingEnabled(code_flush_mode)) return true; BytecodeArray bytecode = BytecodeArray::cast(data); --- node/deps/v8/src/parsing/parsing.cc +++ node/deps/v8/src/parsing/parsing.cc @@ -42,6 +42,7 @@ bool ParseProgram(ParseInfo* info, Handle