x86: add missing XOP checks and macros

Signed-off-by: James Almer <jamrial@gmail.com>

configure

@@ -270,6 +270,7 @@ Optimization options (experts only):
   --disable-sse4           disable SSE4 optimizations
   --disable-sse42          disable SSE4.2 optimizations
   --disable-avx            disable AVX optimizations
+  --disable-xop            disable XOP optimizations
   --disable-fma4           disable FMA4 optimizations
   --disable-avx2           disable AVX2 optimizations
   --disable-armv5te        disable armv5te optimizations
@@ -1252,6 +1253,7 @@ ARCH_EXT_LIST_X86='
     avx
     avx2
     cpunop
+    xop
     fma4
     i686
     mmx
@@ -1575,6 +1577,7 @@ ssse3_deps="sse3"
 sse4_deps="ssse3"
 sse42_deps="sse4"
 avx_deps="sse42"
+xop_deps="avx"
 fma4_deps="avx"
 avx2_deps="avx"
 
@@ -3757,6 +3760,7 @@ EOF
 
         check_yasm "movbe ecx, [5]" && enable yasm ||
             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
+        check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
         check_yasm "CPU amdnop" || disable cpunop
     fi
@@ -4289,6 +4293,7 @@ if enabled x86; then
     echo "SSE enabled               ${sse-no}"
     echo "SSSE3 enabled             ${ssse3-no}"
     echo "AVX enabled               ${avx-no}"
+    echo "XOP enabled               ${xop-no}"
     echo "FMA4 enabled              ${fma4-no}"
     echo "i686 features enabled     ${i686-no}"
     echo "CMOV is fast              ${fast_cmov-no}"

libavutil/x86/cpu.h

@@ -37,6 +37,7 @@
 #define X86_SSE4(flags)             CPUEXT(flags, SSE4)
 #define X86_SSE42(flags)            CPUEXT(flags, SSE42)
 #define X86_AVX(flags)              CPUEXT(flags, AVX)
+#define X86_XOP(flags)              CPUEXT(flags, XOP)
 #define X86_FMA4(flags)             CPUEXT(flags, FMA4)
 #define X86_AVX2(flags)             CPUEXT(flags, AVX2)
 
@@ -51,6 +52,7 @@
 #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)
+#define EXTERNAL_XOP(flags)         CPUEXT_SUFFIX(flags, _EXTERNAL, XOP)
 #define EXTERNAL_FMA4(flags)        CPUEXT_SUFFIX(flags, _EXTERNAL, FMA4)
 #define EXTERNAL_AVX2(flags)        CPUEXT_SUFFIX(flags, _EXTERNAL, AVX2)
 
@@ -65,6 +67,7 @@
 #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)
+#define INLINE_XOP(flags)           CPUEXT_SUFFIX(flags, _INLINE, XOP)
 #define INLINE_FMA4(flags)          CPUEXT_SUFFIX(flags, _INLINE, FMA4)
 #define INLINE_AVX2(flags)          CPUEXT_SUFFIX(flags, _INLINE, AVX2)