@@ -73,7 +73,7 @@ config.h: .config

 SUBDIR_VARS := CLEANFILES EXAMPLES FFLIBS HOSTPROGS TESTPROGS TOOLS      \

                HEADERS ARCH_HEADERS BUILT_HEADERS SKIPHEADERS            \

-               ARMV5TE-OBJS ARMV6-OBJS VFP-OBJS NEON-OBJS                \

+               ARMV5TE-OBJS ARMV6-OBJS ARMV8-OBJS VFP-OBJS NEON-OBJS     \

                ALTIVEC-OBJS MMX-OBJS YASM-OBJS                           \

                MIPSFPU-OBJS MIPSDSPR2-OBJS MIPSDSPR1-OBJS MIPS32R2-OBJS  \

                OBJS SLIBOBJS HOSTOBJS TESTOBJS

@@ -1,5 +1,6 @@

 OBJS-$(HAVE_ARMV5TE) += $(ARMV5TE-OBJS) $(ARMV5TE-OBJS-yes)

 OBJS-$(HAVE_ARMV6)   += $(ARMV6-OBJS)   $(ARMV6-OBJS-yes)

+OBJS-$(HAVE_ARMV8)   += $(ARMV8-OBJS)   $(ARMV8-OBJS-yes)

 OBJS-$(HAVE_VFP)     += $(VFP-OBJS)     $(VFP-OBJS-yes)

 OBJS-$(HAVE_NEON)    += $(NEON-OBJS)    $(NEON-OBJS-yes)

@@ -1494,6 +1494,7 @@ ARCH_EXT_LIST_ARM="

     armv5te

     armv6

     armv6t2

+    armv8

     neon

     vfp

     vfpv3

@@ -1887,6 +1888,7 @@ CMDLINE_APPEND="

 armv5te_deps="arm"

 armv6_deps="arm"

 armv6t2_deps="arm"

+armv8_deps="aarch64"

 neon_deps_any="aarch64 arm"

 vfp_deps_any="aarch64 arm"

 vfpv3_deps="vfp"

@@ -4218,6 +4220,7 @@ check_inline_asm inline_asm_labels '"1:\n"'

 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'

 if enabled aarch64; then

+    enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'

     # internal assembler in clang 3.3 does not support this instruction

     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'

     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'

@@ -22,6 +22,7 @@

 int ff_get_cpu_flags_aarch64(void)

 {

-    return AV_CPU_FLAG_NEON * HAVE_NEON |

-           AV_CPU_FLAG_VFP  * HAVE_VFP;

+    return AV_CPU_FLAG_ARMV8 * HAVE_ARMV8 |

+           AV_CPU_FLAG_NEON  * HAVE_NEON  |

+           AV_CPU_FLAG_VFP   * HAVE_VFP;

 }

@@ -23,6 +23,7 @@

 #include "libavutil/cpu.h"

 #include "libavutil/cpu_internal.h"

+#define have_armv8(flags) CPUEXT(flags, ARMV8)

 #define have_neon(flags) CPUEXT(flags, NEON)

 #define have_vfp(flags)  CPUEXT(flags, VFP)

@@ -130,6 +130,7 @@ int av_parse_cpu_flags(const char *s)

         { "vfpv3",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFPV3    },    .unit = "flags" },

         { "neon",     NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON     },    .unit = "flags" },

 #elif ARCH_AARCH64

+        { "armv8",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_ARMV8    },    .unit = "flags" },

         { "neon",     NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_NEON     },    .unit = "flags" },

         { "vfp",      NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_CPU_FLAG_VFP      },    .unit = "flags" },

 #endif

@@ -263,6 +264,7 @@ static const struct {

     const char *name;

 } cpu_flag_tab[] = {

 #if   ARCH_AARCH64

+    { AV_CPU_FLAG_ARMV8,     "armv8"      },

     { AV_CPU_FLAG_NEON,      "neon"       },

     { AV_CPU_FLAG_VFP,       "vfp"        },

 #elif ARCH_ARM

@@ -63,6 +63,7 @@

 #define AV_CPU_FLAG_VFP          (1 << 3)

 #define AV_CPU_FLAG_VFPV3        (1 << 4)

 #define AV_CPU_FLAG_NEON         (1 << 5)

+#define AV_CPU_FLAG_ARMV8        (1 << 6)

 /**

  * Return the flags which specify extensions supported by the CPU.