[interpreter] Introduce binary op bytecodes for Smi operand.

src/code-stubs.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/code-stubs.h"
 
 #include <sstream>
 
 #include "src/bootstrapper.h"
 #include "src/code-factory.h"
@@ skipping 1680 matching lines @@
     Label if_issmi(assembler), if_isnotsmi(assembler);
     assembler->Branch(assembler->WordIsSmi(value), &if_issmi, &if_isnotsmi);
 
     assembler->Bind(&if_issmi);
     {
       // Try fast Smi addition first.
       Node* one = assembler->SmiConstant(Smi::FromInt(1));
       Node* pair = assembler->SmiAddWithOverflow(value, one);
       Node* overflow = assembler->Projection(1, pair);
 
-      // Check if the Smi additon overflowed.
+      // Check if the Smi addition overflowed.
       Label if_overflow(assembler), if_notoverflow(assembler);
       assembler->Branch(overflow, &if_overflow, &if_notoverflow);
 
       assembler->Bind(&if_notoverflow);
       result_var.Bind(assembler->Projection(0, pair));
       assembler->Goto(&end);
 
       assembler->Bind(&if_overflow);
       {
         var_finc_value.Bind(assembler->SmiToFloat64(value));
@@ skipping 3148 matching lines @@
   if (type->Is(Type::UntaggedPointer())) {
     return Representation::External();
   }
 
   DCHECK(!type->Is(Type::Untagged()));
   return Representation::Tagged();
 }
 
 }  // namespace internal
 }  // namespace v8