| Index: src/codegen.cc | 
| diff --git a/src/codegen.cc b/src/codegen.cc | 
| index 13ce2218df41d972fda1c2b715fd3c8fcce9722f..f6c36682de7f67bac9e96bdcb2f11f77c6773f87 100644 | 
| --- a/src/codegen.cc | 
| +++ b/src/codegen.cc | 
| @@ -165,6 +165,8 @@ void CodeGenerator::PrintCode(Handle<Code> code, CompilationInfo* info) { | 
| function->debug_name()->ToCString().get(), tracing_scope.file()); | 
| } | 
| PrintF(tracing_scope.file(), "--- Optimized code ---\n"); | 
| +      PrintF(tracing_scope.file(), | 
| +             "optimization_id = %d\n", info->optimization_id()); | 
| } else { | 
| PrintF(tracing_scope.file(), "--- Code ---\n"); | 
| } | 
|  |