Add CompilationInfo::output_code_kind to allow overriding the kind of code generated.

src/compiler.h

Index: src/compiler.h
diff --git a/src/compiler.h b/src/compiler.h
index eb87b5570e37a520b011593c35166976f6a615c2..5c5bb02c722f70b4f8e1d39be45c6b325b8149b0 100644
--- a/src/compiler.h
+++ b/src/compiler.h
@@ -299,6 +299,7 @@ class CompilationInfo {
     osr_ast_id_ = osr_ast_id;
     unoptimized_code_ = unoptimized;
     optimization_id_ = isolate()->NextOptimizationId();
+    set_output_code_kind(Code::OPTIMIZED_FUNCTION);
   }
 
   void SetFunctionType(Type::FunctionType* function_type) {
@@ -412,6 +413,10 @@ class CompilationInfo {
 
   base::SmartArrayPointer<char> GetDebugName() const;
 
+  Code::Kind output_code_kind() const { return output_code_kind_; }
+
+  void set_output_code_kind(Code::Kind kind) { output_code_kind_ = kind; }
+
  protected:
   ParseInfo* parse_info_;
 
@@ -451,6 +456,8 @@ class CompilationInfo {
 
   unsigned flags_;
 
+  Code::Kind output_code_kind_;
+
   // For compiled stubs, the stub object
   CodeStub* code_stub_;
   // The compiled code.