Use wtf macros for audio

Source/core/platform/audio/DenormalDisabler.h

 /*
  * Copyright (C) 2011, Google Inc. 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
  *    notice, this list of conditions and the following disclaimer.
  * 2.  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 with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef DenormalDisabler_h
 #define DenormalDisabler_h
 
+#include "wtf/CPU.h"
 #include "wtf/MathExtras.h"
 #include <float.h>
 
 namespace WebCore {
 
 // Deal with denormals. They can very seriously impact performance on x86.
 
 // Define HAVE_DENORMAL if we support flushing denormals to zero.
 #if OS(WINDOWS) && COMPILER(MSVC)
-#define HAVE_DENORMAL
+#define HAVE_DENORMAL 1
 #endif
 
-#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
-#define HAVE_DENORMAL
+#if COMPILER(GCC) && (CPU(X86) || CPU(X86_64))
+#define HAVE_DENORMAL 1
 #endif
 
-#ifdef HAVE_DENORMAL
+#if HAVE(DENORMAL)
 class DenormalDisabler {
 public:
     DenormalDisabler()
             : m_savedCSR(0)
     {
 #if OS(WINDOWS) && COMPILER(MSVC)
         // Save the current state, and set mode to flush denormals.
         //
         // http://stackoverflow.com/questions/637175/possible-bug-in-controlfp-s-may-not-restore-control-word-correctly
         _controlfp_s(&m_savedCSR, 0, 0);
@@ skipping 21 matching lines @@
 #if OS(WINDOWS) && COMPILER(MSVC) && (!_M_IX86_FP)
         // For systems using x87 instead of sse, there's no hardware support
         // to flush denormals automatically. Hence, we need to flush
         // denormals to zero manually.
         return (fabs(f) < FLT_MIN) ? 0.0f : f;
 #else
         return f;
 #endif
     }
 private:
-#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
+#if COMPILER(GCC) && (CPU(X86) || CPU(X86_64))
     inline int getCSR()
     {
         int result;
         asm volatile("stmxcsr %0" : "=m" (result));
         return result;
     }
 
     inline void setCSR(int a)
     {
         int temp = a;
@@ skipping 18 matching lines @@
         return (fabs(f) < FLT_MIN) ? 0.0f : f;
     }
 };
 
 #endif
 
 } // WebCore
 
 #undef HAVE_DENORMAL
 #endif // DenormalDisabler_h