[FFmpeg-trac] #6324(ffmpeg:new): Cannot compile ffmpeg 3.3 and latest master for arm64 for iOS

[FFmpeg]

#6324: Cannot compile ffmpeg 3.3 and latest master for arm64 for iOS
--------------------------------+--------------------------------------
             Reporter:  ioeir2  |                     Type:  defect
               Status:  new     |                 Priority:  normal
            Component:  ffmpeg  |                  Version:  git-master
             Keywords:  ios     |               Blocked By:
             Blocking:          |  Reproduced by developer:  0
Analyzed by developer:  0       |
--------------------------------+--------------------------------------
 Summary of the bug:
 Cannot compile ffmpeg 3.3 and latest master for arm64 for iOS. Getting
 error when compiling neon code for arm64 and armv7. However armv7, x86_64
 and i386 targets can be compiled without any issues.
 At the same time it is still possible to compile arm64 on ffmpeg 3.2.4.

 Errors:
 {{{
 src/libavcodec/aarch64/h264dsp_init_aarch64.c:90:40: warning: incompatible
 pointer types assigning to 'h264_biweight_func' (aka 'void
       (*)(unsigned char *, unsigned char *, long, int, int, int, int,
 int)') from
       'void (uint8_t *, uint8_t *, int, int, int, int, int, int)' (aka
 'void (unsigned char *, unsigned char *, int, int, int, int, int,
       int)') [-Wincompatible-pointer-types]
         c->biweight_h264_pixels_tab[2] = ff_biweight_h264_pixels_4_neon;
                                        ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 6 warnings generated.
 AS      libavcodec/aarch64/h264idct_neon.o
 CC      libavcodec/aarch64/h264pred_init.o
 AS      libavcodec/aarch64/h264pred_neon.o
 CC      libavcodec/aarch64/h264qpel_init_aarch64.o
 AS      libavcodec/aarch64/h264qpel_neon.o
 CC      libavcodec/aarch64/hpeldsp_init_aarch64.o
 AS      libavcodec/aarch64/hpeldsp_neon.o
 CC      libavcodec/aarch64/idctdsp_init_aarch64.o
 AS      libavcodec/aarch64/mdct_neon.o
 AS      libavcodec/aarch64/simple_idct_neon.o
 <instantiation>:1:14: error: invalid operand for instruction
 smull v7.4S, ., v0.H[1]
              ^
 <instantiation>:11:9: note: while in macro instantiation
         idct_col4_top v24 v25 v26 v27 14
         ^
 /var/folders/3c/bksvjzx55n9f9x1lm7fp2v500000gn/T/simple_idct_neon-
 6ce3ab.s:234:1: note: while in macro instantiation
 declare_idct_col4_neon 1 4H
 ^
 <instantiation>:2:23: error: invalid operand for instruction
         smull v16.4S, ., v0.H[5]
                       ^
 }}}

 Versions:
 Xcode 8.3.1
 ffmpeg version 3.3 or latest master (April 15, 2017)
 gas-preprocessor.pl latest from https://git.libav.org/?p=gas-
 preprocessor.git;a=tree

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Ticket URL: <https://trac.ffmpeg.org/ticket/6324>
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