Add inlining of binary smi operations in the full codegens on IA32...

src/ast.h

Index: src/ast.h
===================================================================
--- src/ast.h	(revision 5348)
+++ src/ast.h	(working copy)
@@ -205,6 +205,9 @@
   // False for operations that can return one of their operands.
   virtual bool ResultOverwriteAllowed() { return false; }
 
+  // True iff the expression is a literal represented as a smi.
+  virtual bool IsSmiLiteral() { return false; }
+
   // Static type information for this expression.
   StaticType* type() { return &type_; }
 
@@ -775,6 +778,7 @@
 
   virtual void Accept(AstVisitor* v);
   virtual bool IsTrivial() { return true; }
+  virtual bool IsSmiLiteral() { return handle_->IsSmi(); }
 
   // Type testing & conversion.
   virtual Literal* AsLiteral() { return this; }