Avoid a call to the runtime system when doing binary fp ops on ARM...

src/codegen-ia32.h

 // Copyright 2006-2008 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 17 matching lines @@
 #ifndef V8_CODEGEN_IA32_H_
 #define V8_CODEGEN_IA32_H_
 
 namespace v8 { namespace internal {
 
 // Forward declarations
 class DeferredCode;
 class RegisterAllocator;
 class RegisterFile;
 
-// Mode to overwrite BinaryExpression values.
-enum OverwriteMode { NO_OVERWRITE, OVERWRITE_LEFT, OVERWRITE_RIGHT };
-
 enum InitState { CONST_INIT, NOT_CONST_INIT };
 enum TypeofState { INSIDE_TYPEOF, NOT_INSIDE_TYPEOF };
 
 
 // -------------------------------------------------------------------------
 // Reference support
 
 // A reference is a C++ stack-allocated object that keeps an ECMA
 // reference on the execution stack while in scope. For variables
 // the reference is empty, indicating that it isn't necessary to
@@ skipping 377 matching lines @@
   // through the context chain.
   void LoadTypeofExpression(Expression* x);
 
   // Translate the value on top of the frame into control flow to the
   // control destination.
   void ToBoolean(ControlDestination* destination);
 
   void GenericBinaryOperation(
       Token::Value op,
       SmiAnalysis* type,
-      const OverwriteMode overwrite_mode = NO_OVERWRITE);
+      OverwriteMode overwrite_mode);
 
   // If possible, combine two constant smi values using op to produce
   // a smi result, and push it on the virtual frame, all at compile time.
   // Returns true if it succeeds.  Otherwise it has no effect.
   bool FoldConstantSmis(Token::Value op, int left, int right);
 
   // Emit code to perform a binary operation on a constant
   // smi and a likely smi.  Consumes the Result *operand.
   void ConstantSmiBinaryOperation(Token::Value op,
                                   Result* operand,
@@ skipping 163 matching lines @@
   friend class Reference;
   friend class Result;
 
   DISALLOW_COPY_AND_ASSIGN(CodeGenerator);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_CODEGEN_IA32_H_