[Interpreter] Support top-level code.

src/compiler.h

Index: src/compiler.h
diff --git a/src/compiler.h b/src/compiler.h
index d655571362469bc091ad0e8a5acf1126cd06944d..a1f27b862c155b4b01e0643dc337ff89a7fbbaa6 100644
--- a/src/compiler.h
+++ b/src/compiler.h
@@ -173,6 +173,9 @@ class CompilationInfo {
     parameter_count_ = parameter_count;
   }
 
+  bool has_bytecode_array() const { return !bytecode_array_.is_null(); }
+  Handle<BytecodeArray> bytecode_array() const { return bytecode_array_; }
+
   bool is_tracking_positions() const { return track_positions_; }
 
   bool is_calling() const {
@@ -274,6 +277,10 @@ class CompilationInfo {
   }
   void SetCode(Handle<Code> code) { code_ = code; }
 
+  void SetBytecodeArray(Handle<BytecodeArray> bytecode_array) {
+    bytecode_array_ = bytecode_array;
+  }
+
   bool ShouldTrapOnDeopt() const {
     return (FLAG_trap_on_deopt && IsOptimizing()) ||
         (FLAG_trap_on_stub_deopt && IsStub());
@@ -459,6 +466,11 @@ class CompilationInfo {
   // data.  Keep track which code we patched.
   Handle<Code> unoptimized_code_;
 
+  // Holds the bytecode array generated by the interpreter.
+  // TODO(rmcilroy/mstarzinger): Temporary work-around until compiler.cc is
+  // refactored to avoid us needing to carry the BytcodeArray around.
+  Handle<BytecodeArray> bytecode_array_;
+
   // The zone from which the compilation pipeline working on this
   // CompilationInfo allocates.
   Zone* zone_;