Reland: [Compiler] Enable handles created during parsing and scope analysis to be deferred.

src/compiler-dispatcher/compiler-dispatcher-job.h

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_COMPILER_DISPATCHER_COMPILER_DISPATCHER_JOB_H_
 #define V8_COMPILER_DISPATCHER_COMPILER_DISPATCHER_JOB_H_
 
 #include <memory>
 
 #include "include/v8.h"
 #include "src/base/macros.h"
 #include "src/globals.h"
 #include "src/handles.h"
 #include "testing/gtest/include/gtest/gtest_prod.h"
 
 namespace v8 {
 namespace internal {
 
 class AstValueFactory;
 class CompilerDispatcherTracer;
 class CompilationInfo;
 class CompilationJob;
+class DeferredHandles;
 class FunctionLiteral;
 class Isolate;
 class ParseInfo;
 class Parser;
 class SharedFunctionInfo;
 class String;
 class UnicodeCache;
 class Utf16CharacterStream;
 
 enum class CompileJobStatus {
@@ skipping 10 matching lines @@
 
 class V8_EXPORT_PRIVATE CompilerDispatcherJob {
  public:
   // Creates a CompilerDispatcherJob in the initial state.
   CompilerDispatcherJob(Isolate* isolate, CompilerDispatcherTracer* tracer,
                         Handle<SharedFunctionInfo> shared,
                         size_t max_stack_size);
   // Creates a CompilerDispatcherJob in the analyzed state.
   CompilerDispatcherJob(Isolate* isolate, CompilerDispatcherTracer* tracer,
                         Handle<SharedFunctionInfo> shared,
-                        FunctionLiteral* literal, size_t max_stack_size);
+                        FunctionLiteral* literal,
+                        std::shared_ptr<Zone> parse_zone,
+                        std::shared_ptr<DeferredHandles> parse_handles,
+                        std::shared_ptr<DeferredHandles> compile_handles,
+                        size_t max_stack_size);
   ~CompilerDispatcherJob();
 
   CompileJobStatus status() const { return status_; }
 
   // Returns true if this CompilerDispatcherJob was created for the given
   // function.
   bool IsAssociatedWith(Handle<SharedFunctionInfo> shared) const;
 
   // Transition from kInitial to kReadyToParse.
   void PrepareToParseOnMainThread();
@@ skipping 40 matching lines @@
   Handle<String> source_;        // Global handle.
   Handle<String> wrapper_;       // Global handle.
   std::unique_ptr<v8::String::ExternalStringResourceBase> source_wrapper_;
   size_t max_stack_size_;
 
   // Members required for parsing.
   std::unique_ptr<UnicodeCache> unicode_cache_;
   std::unique_ptr<Utf16CharacterStream> character_stream_;
   std::unique_ptr<ParseInfo> parse_info_;
   std::unique_ptr<Parser> parser_;
-  std::unique_ptr<DeferredHandles> handles_from_parsing_;
+
+  // Members required for compiling a parsed function.
+  std::shared_ptr<Zone> parse_zone_;
 
   // Members required for compiling.
   std::unique_ptr<CompilationInfo> compile_info_;
   std::unique_ptr<CompilationJob> compile_job_;
 
   bool trace_compiler_dispatcher_jobs_;
 
   DISALLOW_COPY_AND_ASSIGN(CompilerDispatcherJob);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_DISPATCHER_COMPILER_DISPATCHER_JOB_H_