Add denormals stripping to the main thread as well as workerthreads

Conflicts:

	src/core/main.cpp

include/MixerWorkerThread.h

@@ -22,8 +22,8 @@
  *
  */
 
-#ifndef _MIXER_WORKER_THREAD_H
-#define _MIXER_WORKER_THREAD_H
+#ifndef MIXER_WORKER_THREAD_H
+#define MIXER_WORKER_THREAD_H
 
 #include <QtCore/QAtomicPointer>
 #include <QtCore/QThread>

src/core/main.cpp

@@ -27,6 +27,14 @@
 #include "lmmsversion.h"
 #include "versioninfo.h"
 
+// denormals stripping
+#ifdef __SSE__
+#include <xmmintrin.h>
+#endif
+#ifdef __SSE3__
+#include <pmmintrin.h>
+#endif
+
 #include <QtCore/QDir>
 #include <QtCore/QFileInfo>
 #include <QtCore/QLocale>
@@ -92,6 +100,16 @@ int main( int argc, char * * argv )
 	// intialize RNG
 	srand( getpid() + time( 0 ) );
 
+	// set denormal protection for this thread
+	#ifdef __SSE3__
+	/* DAZ flag */
+	_MM_SET_DENORMALS_ZERO_MODE( _MM_DENORMALS_ZERO_ON );
+	#endif
+	#ifdef __SSE__
+	/* FTZ flag */
+	_MM_SET_FLUSH_ZERO_MODE( _MM_FLUSH_ZERO_ON );
+	#endif
+
 	bool core_only = false;
 	bool fullscreen = true;
 	bool exit_after_import = false;