Optimize identical-comparisons based on propagated type information.

runtime/bin/eventhandler_win.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/globals.h"
 #if defined(TARGET_OS_WINDOWS)
 
 #include "bin/eventhandler.h"
 
 #include <winsock2.h>  // NOLINT
@@ skipping 800 matching lines @@
     Handle* handle = reinterpret_cast<Handle*>(msg->id);
     ASSERT(handle != NULL);
     if (handle->is_listen_socket()) {
       ListenSocket* listen_socket =
           reinterpret_cast<ListenSocket*>(handle);
       listen_socket->EnsureInitialized(this);
       listen_socket->SetPortAndMask(msg->dart_port, msg->data);
 
       Handle::ScopedLock lock(listen_socket);
 
-      // If incomming connections are requested make sure to post already
+      // If incoming connections are requested make sure to post already
       // accepted connections.
       if ((msg->data & (1 << kInEvent)) != 0) {
         if (listen_socket->CanAccept()) {
           int event_mask = (1 << kInEvent);
           handle->set_mask(handle->mask() & ~event_mask);
           DartUtils::PostInt32(handle->port(), event_mask);
         }
         // Always keep 5 outstanding accepts going, to enhance performance.
         while (listen_socket->pending_accept_count() < 5) {
           listen_socket->IssueAccept();
@@ skipping 300 matching lines @@
 
 
 void EventHandlerImplementation::Shutdown() {
   SendData(kShutdownId, 0, 0);
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_WINDOWS)