Reorder switch clauses using newly-introduced execution counters in

src/typing.cc

 // Copyright 2013 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 149 matching lines @@
       else if (switch_type != label_switch_type)
         switch_type = SwitchStatement::GENERIC_SWITCH;
     }
     CHECK_ALIVE(VisitStatements(clause->statements()));
   }
   if (switch_type == SwitchStatement::UNKNOWN_SWITCH)
     switch_type = SwitchStatement::GENERIC_SWITCH;
   stmt->set_switch_type(switch_type);
 
   // TODO(rossberg): can we eliminate this special case and extra loop?
-  if (switch_type == SwitchStatement::SMI_SWITCH) {
+  if (switch_type == SwitchStatement::SMI_SWITCH ||
+      switch_type == SwitchStatement::STRING_SWITCH) {
     for (int i = 0; i < clauses->length(); ++i) {
       CaseClause* clause = clauses->at(i);
       if (!clause->is_default())
         clause->RecordTypeFeedback(oracle());
     }
   }
 }
 
 
 void AstTyper::VisitDoWhileStatement(DoWhileStatement* stmt) {
@@ skipping 322 matching lines @@
 }
 
 
 void AstTyper::VisitModuleStatement(ModuleStatement* stmt) {
   ASSERT(!HasStackOverflow());
   CHECK_ALIVE(Visit(stmt->body()));
 }
 
 
 } }  // namespace v8::internal