Style cleanup of switches over Slot::Type in the nonoptimizing code...

src/x64/fast-codegen-x64.cc

Index: src/x64/fast-codegen-x64.cc
===================================================================
--- src/x64/fast-codegen-x64.cc	(revision 3529)
+++ src/x64/fast-codegen-x64.cc	(working copy)
@@ -240,7 +240,7 @@
 Operand FastCodeGenerator::CreateSlotOperand<Operand>(Slot* source,
                                                       Register scratch) {
   switch (source->type()) {
-    case Slot::PARAMETER:
+    case Slot::PARAMETER:  // Fall through.
     case Slot::LOCAL:
       return Operand(rbp, SlotOffset(source));
     case Slot::CONTEXT: {
@@ -248,15 +248,12 @@
           function_->scope()->ContextChainLength(source->var()->scope());
       __ LoadContext(scratch, context_chain_length);
       return CodeGenerator::ContextOperand(scratch, source->index());
-      break;
     }
     case Slot::LOOKUP:
       UNIMPLEMENTED();
-      // Fall-through.
-    default:
-      UNREACHABLE();
-      return Operand(rax, 0);  // Dead code to make the compiler happy.
   }
+  UNREACHABLE();
+  return Operand(rax, 0);
 }
 
 
@@ -331,8 +328,6 @@
     }
     case Slot::LOOKUP:
       UNIMPLEMENTED();
-    default:
-      UNREACHABLE();
   }
 }
 
@@ -583,8 +578,6 @@
         case Slot::LOOKUP:
           UNIMPLEMENTED();
           break;
-        default:
-          UNREACHABLE();
       }
     }
     Move(context, slot, rax);