Extend code printing:

src/codegen.cc

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 197 matching lines @@
       stream.Seek(function->start_position());
       // fun->end_position() points to the last character in the stream. We
       // need to compensate by adding one to calculate the length.
       int source_len =
           function->end_position() - function->start_position() + 1;
       for (int i = 0; i < source_len; i++) {
         if (stream.has_more()) PrintF("%c", stream.GetNext());
       }
       PrintF("\n\n");
     }
-    PrintF("--- Code ---\n");
-    code->Disassemble(*function->name()->ToCString());
+    if (info->IsOptimizing()) {
+      if (FLAG_print_unopt_code) {
+        PrintF("--- Unoptimized code ---\n");
+        info->closure()->shared()->code()->Disassemble(
+            *function->debug_name()->ToCString());
+      }
+      PrintF("--- Optimized code ---\n");
+    } else {
+      PrintF("--- Code ---\n");
+    }
+    code->Disassemble(*function->debug_name()->ToCString());
   }
 #endif  // ENABLE_DISASSEMBLER
 }
 
 
 // Generate the code.  Compile the AST and assemble all the pieces into a
 // Code object.
 bool CodeGenerator::MakeCode(CompilationInfo* info) {
   // When using Crankshaft the classic backend should never be used.
   ASSERT(!V8::UseCrankshaft());
@@ skipping 237 matching lines @@
   int result = save_doubles_ ? 1 : 0;
 #ifdef _WIN64
   return result | ((result_size_ == 1) ? 0 : 2);
 #else
   return result;
 #endif
 }
 
 
 } }  // namespace v8::internal