Update SDL to 2.0.7

libs/SDL2/include/SDL_cpuinfo.h

@@ -1,6 +1,6 @@
 /*
   Simple DirectMedia Layer
-  Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
+  Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -25,14 +25,20 @@
  *  CPU feature detection for SDL.
  */
 
-#ifndef _SDL_cpuinfo_h
-#define _SDL_cpuinfo_h
+#ifndef SDL_cpuinfo_h_
+#define SDL_cpuinfo_h_
 
 #include "SDL_stdinc.h"
 
 /* Need to do this here because intrin.h has C++ code in it */
 /* Visual Studio 2005 has a bug where intrin.h conflicts with winnt.h */
 #if defined(_MSC_VER) && (_MSC_VER >= 1500) && (defined(_M_IX86) || defined(_M_X64))
+#ifdef __clang__
+/* Many of the intrinsics SDL uses are not implemented by clang with Visual Studio */
+#undef __MMX__
+#undef __SSE__
+#undef __SSE2__
+#else
 #include <intrin.h>
 #ifndef _WIN64
 #define __MMX__
@@ -40,6 +46,7 @@
 #endif
 #define __SSE__
 #define __SSE2__
+#endif /* __clang__ */
 #elif defined(__MINGW64_VERSION_MAJOR)
 #include <intrin.h>
 #else
@@ -61,6 +68,9 @@
 #ifdef __SSE2__
 #include <emmintrin.h>
 #endif
+#ifdef __SSE3__
+#include <pmmintrin.h>
+#endif
 #endif
 
 #include "begin_code.h"
@@ -144,6 +154,11 @@ extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX(void);
  */
 extern DECLSPEC SDL_bool SDLCALL SDL_HasAVX2(void);
 
+/**
+ *  This function returns true if the CPU has NEON (ARM SIMD) features.
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_HasNEON(void);
+
 /**
  *  This function returns the amount of RAM configured in the system, in MB.
  */
@@ -156,6 +171,6 @@ extern DECLSPEC int SDLCALL SDL_GetSystemRAM(void);
 #endif
 #include "close_code.h"
 
-#endif /* _SDL_cpuinfo_h */
+#endif /* SDL_cpuinfo_h_ */
 
 /* vi: set ts=4 sw=4 expandtab: */