x86: add some more helper macros to check for slow cpuflags

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>

libavutil/cpu_internal.h

@@ -24,13 +24,16 @@
 #define CPUEXT_SUFFIX(flags, suffix, cpuext)                            \
     (HAVE_ ## cpuext ## suffix && ((flags) & AV_CPU_FLAG_ ## cpuext))
 
-#define CPUEXT_SUFFIX_FAST(flags, suffix, cpuext)                       \
+#define CPUEXT_SUFFIX_FAST2(flags, suffix, cpuext, slow_cpuext)         \
     (HAVE_ ## cpuext ## suffix && ((flags) & AV_CPU_FLAG_ ## cpuext) && \
-     !((flags) & AV_CPU_FLAG_ ## cpuext ## SLOW))
+     !((flags) & AV_CPU_FLAG_ ## slow_cpuext ## SLOW))
 
-#define CPUEXT_SUFFIX_SLOW(flags, suffix, cpuext)                       \
+#define CPUEXT_SUFFIX_SLOW2(flags, suffix, cpuext, slow_cpuext)         \
     (HAVE_ ## cpuext ## suffix && ((flags) & AV_CPU_FLAG_ ## cpuext) && \
-     ((flags) & AV_CPU_FLAG_ ## cpuext ## SLOW))
+     ((flags) & AV_CPU_FLAG_ ## slow_cpuext ## SLOW))
+
+#define CPUEXT_SUFFIX_FAST(flags, suffix, cpuext) CPUEXT_SUFFIX_FAST2(flags, suffix, cpuext, cpuext)
+#define CPUEXT_SUFFIX_SLOW(flags, suffix, cpuext) CPUEXT_SUFFIX_SLOW2(flags, suffix, cpuext, cpuext)
 
 #define CPUEXT(flags, cpuext) CPUEXT_SUFFIX(flags, , cpuext)
 #define CPUEXT_FAST(flags, cpuext) CPUEXT_SUFFIX_FAST(flags, , cpuext)

libavutil/x86/cpu.h

@@ -68,8 +68,12 @@
 #define EXTERNAL_AVX_SLOW(flags)    CPUEXT_SUFFIX_SLOW(flags, _EXTERNAL, AVX)
 #define EXTERNAL_XOP(flags)         CPUEXT_SUFFIX(flags, _EXTERNAL, XOP)
 #define EXTERNAL_FMA3(flags)        CPUEXT_SUFFIX(flags, _EXTERNAL, FMA3)
+#define EXTERNAL_FMA3_FAST(flags)   CPUEXT_SUFFIX_FAST2(flags, _EXTERNAL, FMA3, AVX)
+#define EXTERNAL_FMA3_SLOW(flags)   CPUEXT_SUFFIX_SLOW2(flags, _EXTERNAL, FMA3, AVX)
 #define EXTERNAL_FMA4(flags)        CPUEXT_SUFFIX(flags, _EXTERNAL, FMA4)
 #define EXTERNAL_AVX2(flags)        CPUEXT_SUFFIX(flags, _EXTERNAL, AVX2)
+#define EXTERNAL_AVX2_FAST(flags)   CPUEXT_SUFFIX_FAST2(flags, _EXTERNAL, AVX2, AVX)
+#define EXTERNAL_AVX2_SLOW(flags)   CPUEXT_SUFFIX_SLOW2(flags, _EXTERNAL, AVX2, AVX)
 #define EXTERNAL_AESNI(flags)       CPUEXT_SUFFIX(flags, _EXTERNAL, AESNI)
 
 #define INLINE_AMD3DNOW(flags)      CPUEXT_SUFFIX(flags, _INLINE, AMD3DNOW)