[turbofan]: Elide extra move when accessing stack or frame register

src/compiler/instruction.cc

Index: src/compiler/instruction.cc
diff --git a/src/compiler/instruction.cc b/src/compiler/instruction.cc
index 9aebb9a17a5389d2f7c0fbb3f45715c2c137a8cf..06adc634406b3e5ba3c42e41c5f2727a210e2bb0 100644
--- a/src/compiler/instruction.cc
+++ b/src/compiler/instruction.cc
@@ -95,6 +95,10 @@ std::ostream& operator<<(std::ostream& os,
       }
       return os << "]";
     }
+    case InstructionOperand::STACK_POINTER:
+      return os << "[stack_pointer]";
+    case InstructionOperand::FRAME_POINTER:
+      return os << "[frame_pointer]";
     case InstructionOperand::INVALID:
       return os << "(x)";
   }