Use constant types to represent the fixed right arg of a MOD.

src/code-stubs-hydrogen.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 905 matching lines @@
     // For the generic add stub a fast case for string addition is performance
     // critical.
     if (left_type->Maybe(Type::String())) {
       IfBuilder if_leftisstring(this);
       if_leftisstring.If<HIsStringAndBranch>(left);
       if_leftisstring.Then();
       {
         Push(BuildBinaryOperation(
                     state.op(), left, right,
                     handle(Type::String(), isolate()), right_type,
-                    result_type, state.fixed_right_arg()));
+                    result_type));
       }
       if_leftisstring.Else();
       {
         Push(BuildBinaryOperation(
                     state.op(), left, right,
-                    left_type, right_type, result_type,
-                    state.fixed_right_arg()));
+                    left_type, right_type, result_type));
       }
       if_leftisstring.End();
       result = Pop();
     } else {
       IfBuilder if_rightisstring(this);
       if_rightisstring.If<HIsStringAndBranch>(right);
       if_rightisstring.Then();
       {
         Push(BuildBinaryOperation(
                     state.op(), left, right,
                     left_type, handle(Type::String(), isolate()),
-                    result_type, state.fixed_right_arg()));
+                    result_type));
       }
       if_rightisstring.Else();
       {
         Push(BuildBinaryOperation(
                     state.op(), left, right,
-                    left_type, right_type, result_type,
-                    state.fixed_right_arg()));
+                    left_type, right_type, result_type));
       }
       if_rightisstring.End();
       result = Pop();
     }
   } else {
     result = BuildBinaryOperation(
             state.op(), left, right,
-            left_type, right_type, result_type,
-            state.fixed_right_arg());
+            left_type, right_type, result_type);
   }
 
   // If we encounter a generic argument, the number conversion is
   // observable, thus we cannot afford to bail out after the fact.
   if (!state.HasSideEffects()) {
     if (result_type->Is(Type::Smi())) {
       if (state.op() == Token::SHR) {
         // TODO(olivf) Replace this by a SmiTagU Instruction.
         // 0x40000000: this number would convert to negative when interpreting
         // the register as signed value;
@@ skipping 359 matching lines @@
   return BuildUncheckedDictionaryElementLoad(receiver, key);
 }
 
 
 Handle<Code> KeyedLoadDictionaryElementStub::GenerateCode(Isolate* isolate) {
   return DoGenerateCode(isolate, this);
 }
 
 
 } }  // namespace v8::internal