Create multiple compilation jobs for ignition if compiling multiple literals

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 <vector>
 
 #include "src/base/macros.h"
 #include "src/handles.h"
 #include "testing/gtest/include/gtest/gtest_prod.h"
 
 namespace v8 {
 namespace internal {
 
 class CompilationInfo;
 class CompilationJob;
@@ skipping 22 matching lines @@
   CompilerDispatcherJob(Isolate* isolate, Handle<SharedFunctionInfo> shared,
                         size_t max_stack_size);
   ~CompilerDispatcherJob();
 
   CompileJobStatus status() const { return status_; }
   bool can_parse_on_background_thread() const {
     return can_parse_on_background_thread_;
   }
   // Should only be called after kReadyToCompile.
   bool can_compile_on_background_thread() const {
-    DCHECK(compile_job_.get());
+    DCHECK(!compile_jobs_.empty());
     return can_compile_on_background_thread_;
   }
 
   // Transition from kInitial to kReadyToParse.
   void PrepareToParseOnMainThread();
 
   // Transition from kReadyToParse to kParsed.
   void Parse();
 
   // Transition from kParsed to kReadyToAnalyse (or kFailed). Returns false
@@ skipping 26 matching lines @@
   // Members required for parsing.
   std::unique_ptr<UnicodeCache> unicode_cache_;
   std::unique_ptr<Zone> zone_;
   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.
   std::unique_ptr<CompilationInfo> compile_info_;
-  std::unique_ptr<CompilationJob> compile_job_;
+  std::vector<std::unique_ptr<CompilationJob>> compile_jobs_;
 
   bool can_parse_on_background_thread_;
   bool can_compile_on_background_thread_;
 
   DISALLOW_COPY_AND_ASSIGN(CompilerDispatcherJob);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_DISPATCHER_COMPILER_DISPATCHER_JOB_H_