x86: Add SSSE3_SLOW CPU flag and related convenience macros

doc/APIchanges

@@ -13,6 +13,9 @@ libavutil:     2015-08-28
 
 API changes, most recent first:
 
+2016-07-20 - xxxxxxx - lavu 55.20.0 - cpu.h
+  Add AV_CPU_FLAG_SSSE3SLOW.
+
 2016-07-02 - 4926fa9 - lavu 55.19.0 - hwcontext_vaapi.h
   Add driver quirks field to VAAPI-specific hwdevice and enum with
   members AV_VAAPI_DRIVER_QUIRK_* to represent its values.

libavutil/cpu.h

@@ -38,6 +38,7 @@
 #define AV_CPU_FLAG_SSE3SLOW 0x20000000 ///< SSE3 supported, but usually not faster
                                         ///< than regular MMX/SSE (e.g. Core1)
 #define AV_CPU_FLAG_SSSE3        0x0080 ///< Conroe SSSE3 functions
+#define AV_CPU_FLAG_SSSE3SLOW 0x4000000 ///< SSSE3 supported, but usually not faster
 #define AV_CPU_FLAG_ATOM     0x10000000 ///< Atom processor, some SSSE3 instructions are slower
 #define AV_CPU_FLAG_SSE4         0x0100 ///< Penryn SSE4.1 functions
 #define AV_CPU_FLAG_SSE42        0x0200 ///< Nehalem SSE4.2 functions

libavutil/version.h

@@ -54,7 +54,7 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR 55
-#define LIBAVUTIL_VERSION_MINOR 19
+#define LIBAVUTIL_VERSION_MINOR 20
 #define LIBAVUTIL_VERSION_MICRO  0
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \

libavutil/x86/cpu.h

@@ -38,6 +38,8 @@
 #define X86_SSE3_FAST(flags)        CPUEXT_FAST(flags, SSE3)
 #define X86_SSE3_SLOW(flags)        CPUEXT_SLOW(flags, SSE3)
 #define X86_SSSE3(flags)            CPUEXT(flags, SSSE3)
+#define X86_SSSE3_FAST(flags)       CPUEXT_FAST(flags, SSSE3)
+#define X86_SSSE3_SLOW(flags)       CPUEXT_SLOW(flags, SSSE3)
 #define X86_SSE4(flags)             CPUEXT(flags, SSE4)
 #define X86_SSE42(flags)            CPUEXT(flags, SSE42)
 #define X86_AVX(flags)              CPUEXT(flags, AVX)
@@ -60,6 +62,8 @@
 #define EXTERNAL_SSE3_FAST(flags)   CPUEXT_SUFFIX_FAST(flags, _EXTERNAL, SSE3)
 #define EXTERNAL_SSE3_SLOW(flags)   CPUEXT_SUFFIX_SLOW(flags, _EXTERNAL, SSE3)
 #define EXTERNAL_SSSE3(flags)       CPUEXT_SUFFIX(flags, _EXTERNAL, SSSE3)
+#define EXTERNAL_SSSE3_FAST(flags)  CPUEXT_SUFFIX_FAST(flags, _EXTERNAL, SSSE3)
+#define EXTERNAL_SSSE3_SLOW(flags)  CPUEXT_SUFFIX_SLOW(flags, _EXTERNAL, SSSE3)
 #define EXTERNAL_SSE4(flags)        CPUEXT_SUFFIX(flags, _EXTERNAL, SSE4)
 #define EXTERNAL_SSE42(flags)       CPUEXT_SUFFIX(flags, _EXTERNAL, SSE42)
 #define EXTERNAL_AVX(flags)         CPUEXT_SUFFIX(flags, _EXTERNAL, AVX)
@@ -82,6 +86,8 @@
 #define INLINE_SSE3_FAST(flags)     CPUEXT_SUFFIX_FAST(flags, _INLINE, SSE3)
 #define INLINE_SSE3_SLOW(flags)     CPUEXT_SUFFIX_SLOW(flags, _INLINE, SSE3)
 #define INLINE_SSSE3(flags)         CPUEXT_SUFFIX(flags, _INLINE, SSSE3)
+#define INLINE_SSSE3_FAST(flags)    CPUEXT_SUFFIX_FAST(flags, _INLINE, SSSE3)
+#define INLINE_SSSE3_SLOW(flags)    CPUEXT_SUFFIX_SLOW(flags, _INLINE, SSSE3)
 #define INLINE_SSE4(flags)          CPUEXT_SUFFIX(flags, _INLINE, SSE4)
 #define INLINE_SSE42(flags)         CPUEXT_SUFFIX(flags, _INLINE, SSE42)
 #define INLINE_AVX(flags)           CPUEXT_SUFFIX(flags, _INLINE, AVX)