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

src/codegen-arm.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_ARM_H_
 #define V8_CODEGEN_ARM_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 234 matching lines @@
   // Special code for typeof expressions: Unfortunately, we must
   // be careful when loading the expression in 'typeof'
   // expressions. We are not allowed to throw reference errors for
   // non-existing properties of the global object, so we must make it
   // look like an explicit property access, instead of an access
   // through the context chain.
   void LoadTypeofExpression(Expression* x);
 
   void ToBoolean(JumpTarget* true_target, JumpTarget* false_target);
 
-  void GenericBinaryOperation(Token::Value op);
+  void GenericBinaryOperation(Token::Value op, OverwriteMode overwrite_mode);
   void Comparison(Condition cc, bool strict = false);
 
-  void SmiOperation(Token::Value op, Handle<Object> value, bool reversed);
+  void SmiOperation(Token::Value op,
+                    Handle<Object> value,
+                    bool reversed,
+                    OverwriteMode mode);
 
   void CallWithArguments(ZoneList<Expression*>* arguments, int position);
 
   // Control flow
   void Branch(bool if_true, JumpTarget* target);
   void CheckStack();
 
   bool CheckForInlineRuntimeCall(CallRuntime* node);
   Handle<JSFunction> BuildBoilerplate(FunctionLiteral* node);
   void ProcessDeclarations(ZoneList<Declaration*>* declarations);
@@ skipping 128 matching lines @@
   friend class JumpTarget;
   friend class Reference;
 
   DISALLOW_COPY_AND_ASSIGN(CodeGenerator);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_CODEGEN_ARM_H_