Disable the VC-1 motion compensation NEON asm which is the only part using that directive. The integrated assembler in the upcoming clang 3.5 does not support .dn/.qn without plans to change that. Too much effort to implement it while it is rarely used.
http://llvm.org/bugs/show_bug.cgi?id=18199. --- configure | 6 ++++++ libavcodec/arm/vc1dsp_init_neon.c | 4 ++++ libavcodec/arm/vc1dsp_neon.S | 4 ++++ 3 files changed, 14 insertions(+) diff --git a/configure b/configure index 9c6109e..a148b93 100755 --- a/configure +++ b/configure @@ -1467,6 +1467,7 @@ SYSTEM_FUNCS=" " TOOLCHAIN_FEATURES=" + as_dn_directive asm_mod_q attribute_may_alias attribute_packed @@ -3767,6 +3768,11 @@ EOF check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)' + check_as <<EOF && enable as_dn_directive +ra .dn d0.i16 +.unreq ra +EOF + [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic elif enabled mips; then diff --git a/libavcodec/arm/vc1dsp_init_neon.c b/libavcodec/arm/vc1dsp_init_neon.c index 912e33c..9ded7a2 100644 --- a/libavcodec/arm/vc1dsp_init_neon.c +++ b/libavcodec/arm/vc1dsp_init_neon.c @@ -22,6 +22,8 @@ #include "libavcodec/vc1dsp.h" #include "vc1dsp.h" +#include "config.h" + void ff_vc1_inv_trans_8x8_neon(int16_t *block); void ff_vc1_inv_trans_4x8_neon(uint8_t *dest, int linesize, int16_t *block); void ff_vc1_inv_trans_8x4_neon(uint8_t *dest, int linesize, int16_t *block); @@ -91,6 +93,7 @@ av_cold void ff_vc1dsp_init_neon(VC1DSPContext *dsp) dsp->vc1_inv_trans_4x4_dc = ff_vc1_inv_trans_4x4_dc_neon; dsp->put_vc1_mspel_pixels_tab[ 0] = ff_put_pixels8x8_neon; + if (HAVE_AS_DN_DIRECTIVE) { dsp->put_vc1_mspel_pixels_tab[ 1] = ff_put_vc1_mspel_mc10_neon; dsp->put_vc1_mspel_pixels_tab[ 2] = ff_put_vc1_mspel_mc20_neon; dsp->put_vc1_mspel_pixels_tab[ 3] = ff_put_vc1_mspel_mc30_neon; @@ -106,6 +109,7 @@ av_cold void ff_vc1dsp_init_neon(VC1DSPContext *dsp) dsp->put_vc1_mspel_pixels_tab[13] = ff_put_vc1_mspel_mc13_neon; dsp->put_vc1_mspel_pixels_tab[14] = ff_put_vc1_mspel_mc23_neon; dsp->put_vc1_mspel_pixels_tab[15] = ff_put_vc1_mspel_mc33_neon; + } dsp->put_no_rnd_vc1_chroma_pixels_tab[0] = ff_put_vc1_chroma_mc8_neon; dsp->avg_no_rnd_vc1_chroma_pixels_tab[0] = ff_avg_vc1_chroma_mc8_neon; diff --git a/libavcodec/arm/vc1dsp_neon.S b/libavcodec/arm/vc1dsp_neon.S index d1b24cf..fa87ede 100644 --- a/libavcodec/arm/vc1dsp_neon.S +++ b/libavcodec/arm/vc1dsp_neon.S @@ -24,6 +24,8 @@ #include "libavutil/arm/asm.S" #include "neon.S" +#include "config.h" + @ Transpose rows into columns of a matrix of 16-bit elements. For 4x4, pass @ double-word registers, for 8x4, pass quad-word registers. .macro transpose16 r0, r1, r2, r3 @@ -661,6 +663,7 @@ function ff_vc1_inv_trans_4x4_neon, export=1 bx lr endfunc +#if HAVE_AS_DN_DIRECTIVE @ The absolute value of multiplication constants from vc1_mspel_filter and vc1_mspel_{ver,hor}_filter_16bits. @ The sign is embedded in the code below that carries out the multiplication (mspel_filter{,.16}). #define MSPEL_MODE_1_MUL_CONSTANTS 4 53 18 3 @@ -984,6 +987,7 @@ PUT_VC1_MSPEL_MC_V_ONLY(2) PUT_VC1_MSPEL_MC_V_ONLY(3) #undef PUT_VC1_MSPEL_MC_V_ONLY +#endif function ff_put_pixels8x8_neon, export=1 vld1.64 {d0}, [r1], r2 -- 2.0.0 _______________________________________________ libav-devel mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-devel
