Make closures optimizable by Crankshaft compiler.

src/rewriter.cc

 // Copyright 2010 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 960 matching lines @@
   UNREACHABLE();
 }
 
 
 void Processor::VisitThisFunction(ThisFunction* node) {
   USE(node);
   UNREACHABLE();
 }
 
 
-// Assumes code has been parsed and scopes hve been analyzed.  Mutates the
+// Assumes code has been parsed and scopes have been analyzed.  Mutates the
 // AST, so the AST should not continue to be used in the case of failure.
 bool Rewriter::Rewrite(CompilationInfo* info) {
   FunctionLiteral* function = info->function();
   ASSERT(function != NULL);
   Scope* scope = function->scope();
   ASSERT(scope != NULL);
   if (scope->is_function_scope()) return true;
 
   ZoneList<Statement*>* body = function->body();
   if (!body->is_empty()) {
@@ skipping 22 matching lines @@
   if (FLAG_optimize_ast && !body->is_empty()) {
     AstOptimizer optimizer;
     optimizer.Optimize(body);
     if (optimizer.HasStackOverflow()) return false;
   }
   return true;
 }
 
 
 } }  // namespace v8::internal