Remove OS(QNX) support.

Source/wtf/ThreadingPthreads.cpp

 /*
  * Copyright (C) 2007, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Justin Haygood (jhaygood@reaktix.com)
  * Copyright (C) 2011 Research In Motion Limited. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
@@ skipping 92 matching lines @@
 void unsafeThreadWasDetached(ThreadIdentifier);
 void threadDidExit(ThreadIdentifier);
 void threadWasJoined(ThreadIdentifier);
 
 static Mutex& threadMapMutex()
 {
     DEFINE_STATIC_LOCAL(Mutex, mutex, ());
     return mutex;
 }
 
-#if OS(QNX) && CPU(ARM_THUMB2)
-static void enableIEEE754Denormal()
-{
-    // Clear the ARM_VFP_FPSCR_FZ flag in FPSCR.
-    unsigned fpscr;
-    asm volatile("vmrs %0, fpscr" : "=r"(fpscr));
-    fpscr &= ~0x01000000u;
-    asm volatile("vmsr fpscr, %0" : : "r"(fpscr));
-}
-#endif
-
 void initializeThreading()
 {
     if (atomicallyInitializedStaticMutex)
         return;
 
-#if OS(QNX) && CPU(ARM_THUMB2)
-    enableIEEE754Denormal();
-#endif
-
     WTF::double_conversion::initialize();
     // StringImpl::empty() does not construct its static string in a threadsafe fashion,
     // so ensure it has been initialized from here.
     StringImpl::empty();
     atomicallyInitializedStaticMutex = new Mutex;
     threadMapMutex();
     initializeRandomNumberGenerator();
     ThreadIdentifierData::initializeOnce();
     StackStats::initialize();
     wtfThreadData();
@@ skipping 66 matching lines @@
     ThreadFunctionInvocation* leakedInvocation = invocation.leakPtr();
     UNUSED_PARAM(leakedInvocation);
 
     return establishIdentifierForPthreadHandle(threadHandle);
 }
 
 void initializeCurrentThreadInternal(const char* threadName)
 {
 #if HAVE(PTHREAD_SETNAME_NP)
     pthread_setname_np(threadName);
-#elif OS(QNX)
-    pthread_setname_np(pthread_self(), threadName);
 #else
     UNUSED_PARAM(threadName);
 #endif
 
 #if OS(MAC_OS_X) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1060
     // All threads that potentially use APIs above the BSD layer must be registered with the Objective-C
     // garbage collector in case API implementations use garbage-collected memory.
     objc_registerThreadWithCollector();
 #endif
 
-#if OS(QNX) && CPU(ARM_THUMB2)
-    enableIEEE754Denormal();
-#endif
-
     ThreadIdentifier id = identifierByPthreadHandle(pthread_self());
     ASSERT(id);
     ThreadIdentifierData::initialize(id);
 }
 
 int waitForThreadCompletion(ThreadIdentifier threadID)
 {
     pthread_t pthreadHandle;
     ASSERT(threadID);
 
@@ skipping 162 matching lines @@
 
 void ThreadCondition::broadcast()
 {
     int result = pthread_cond_broadcast(&m_condition);
     ASSERT_UNUSED(result, !result);
 }
 
 } // namespace WTF
 
 #endif // USE(PTHREADS)