| Index: src/compiler/raw-machine-assembler.h | 
| diff --git a/src/compiler/raw-machine-assembler.h b/src/compiler/raw-machine-assembler.h | 
| index 04e0fee704e9c7904c2aefc3f44732a67cd32e27..9cb394e8b387024b4f6e057bc4a7e95b0b204271 100644 | 
| --- a/src/compiler/raw-machine-assembler.h | 
| +++ b/src/compiler/raw-machine-assembler.h | 
| @@ -64,6 +64,12 @@ class RawMachineAssembler : public GraphBuilder, | 
| return call_descriptor_builder_->parameter_types(); | 
| } | 
|  | 
| +  Node* UndefinedConstant() { | 
| +    PrintableUnique<Object> unique = PrintableUnique<Object>::CreateImmovable( | 
| +        zone(), isolate()->factory()->undefined_value()); | 
| +    return NewNode(common()->HeapConstant(unique)); | 
| +  } | 
| + | 
| // Parameters. | 
| Node* Parameter(int index); | 
|  | 
|  |