Bug 611960 - bustage on Win64 after bug 583138 is landed. r=roc, a=roc

gfx/ycbcr/convert.patch

@@ -2409,7 +2409,7 @@ index b5049a5..627b8cb 100644
  extern "C" {
 -
 -#if USE_MMX
-+#if defined(MOZILLA_COMPILE_WITH_SSE2)
++#if defined(MOZILLA_COMPILE_WITH_SSE2) && defined(_M_IX86)
  __declspec(naked)
  void FastConvertYUVToRGB32Row(const uint8* y_buf,
                                const uint8* u_buf,

gfx/ycbcr/yuv_row_win.cpp

@@ -12,7 +12,7 @@
 #define kCoefficientsRgbV kCoefficientsRgbY + 4096
 
 extern "C" {
-#if defined(MOZILLA_COMPILE_WITH_SSE2)
+#if defined(MOZILLA_COMPILE_WITH_SSE2) && defined(_M_IX86)
 __declspec(naked)
 void FastConvertYUVToRGB32Row(const uint8* y_buf,
                               const uint8* u_buf,