error: unable to find a register to spill in class ‘AREG’

[burek]

Summary of the bug:

While trying to build 32bit version of static ffmpeg on 64bit debian (3.2.0-2-amd64), the following error occurred:

/root/ffmpeg-static/src/ffmpeg/libavcodec/bitstream.c:348:1: error: unable to find a register to spill in class ‘AREG’

I was using the following config:
(Since the trac reported an error "Warning: Ticket description is too long (must be less than 262144 characters)", here is a pastebin: ​http://pastebin.com/NEL7gxRd

Shortly:

configure --prefix=/root/ffmpeg-static/32bit --arch=x86_32 --extra-cflags='-m32 -I/root/ffmpeg-static/32bit/include -static' --extra-ldflags='-m32 -L/root/ffmpeg-static/32bit/lib -static' --extra-libs='-lxml2 -lexpat -lfreetype' --enable-static --disable-shared --disable-ffserver --disable-doc --enable-bzlib --enable-zlib --enable-postproc --enable-runtime-cpudetect --enable-libx264 --enable-gpl --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-gray --enable-libass --enable-libfreetype --enable-libopenjpeg --enable-libspeex --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-version3 --enable-libvpx

This is what it looked like near the end of the make:

/root/ffmpeg-static/src/ffmpeg/libavcodec/avpacket.c:229:5: warning: ‘av_destruct_packet’ is deprecated (declared at /root/ffmpeg-static/src/ffmpeg/libavcodec/avpacket.c:41) [-Wdeprecated-declarations]
/root/ffmpeg-static/src/ffmpeg/libavcodec/avpacket.c: In function ‘av_dup_packet’:
/root/ffmpeg-static/src/ffmpeg/libavcodec/avpacket.c:239:9: warning: ‘destruct’ is deprecated (declared at /root/ffmpeg-static/src/ffmpeg/libavcodec/avcodec.h:1076) [-Wdeprecated-declarations]
/root/ffmpeg-static/src/ffmpeg/libavcodec/avpacket.c: In function ‘av_free_packet’:
/root/ffmpeg-static/src/ffmpeg/libavcodec/avpacket.c:262:9: warning: ‘destruct’ is deprecated (declared at /root/ffmpeg-static/src/ffmpeg/libavcodec/avcodec.h:1076) [-Wdeprecated-declarations]
/root/ffmpeg-static/src/ffmpeg/libavcodec/avpacket.c:263:13: warning: ‘destruct’ is deprecated (declared at /root/ffmpeg-static/src/ffmpeg/libavcodec/avcodec.h:1076) [-Wdeprecated-declarations]
/root/ffmpeg-static/src/ffmpeg/libavcodec/avpacket.c:264:9: warning: ‘destruct’ is deprecated (declared at /root/ffmpeg-static/src/ffmpeg/libavcodec/avcodec.h:1076) [-Wdeprecated-declarations]
/root/ffmpeg-static/src/ffmpeg/libavcodec/avpacket.c: In function ‘av_packet_merge_side_data’:
/root/ffmpeg-static/src/ffmpeg/libavcodec/avpacket.c:336:9: warning: ‘destruct’ is deprecated (declared at /root/ffmpeg-static/src/ffmpeg/libavcodec/avcodec.h:1076) [-Wdeprecated-declarations]
CC      libavcodec/avrndec.o
CC      libavcodec/avs.o
CC      libavcodec/avuidec.o
CC      libavcodec/avuienc.o
CC      libavcodec/bethsoftvideo.o
CC      libavcodec/bfi.o
CC      libavcodec/bgmc.o
CC      libavcodec/bink.o
CC      libavcodec/binkaudio.o
CC      libavcodec/binkdsp.o
CC      libavcodec/bintext.o
CC      libavcodec/bitstream.o
CC      libavcodec/bitstream_filter.o
CC      libavcodec/bmp.o
CC      libavcodec/bmp_parser.o
/root/ffmpeg-static/src/ffmpeg/libavcodec/bitstream.c: In function ‘ff_init_vlc_sparse’:
/root/ffmpeg-static/src/ffmpeg/libavcodec/bitstream.c:348:1: error: unable to find a register to spill in class ‘AREG’
/root/ffmpeg-static/src/ffmpeg/libavcodec/bitstream.c:348:1: error: this is the insn:
(insn 600 599 601 93 (parallel [
            (set (reg:SI 1 dx [orig:259 D.6937 ] [259])
                (mem/v:SI (plus:SI (reg/v/f:SI 262 [ vlc ])
                        (const_int 16 [0x10])) [-1 S4 A32]))
            (set (mem/v:SI (plus:SI (reg/v/f:SI 262 [ vlc ])
                        (const_int 16 [0x10])) [-1 S4 A32])
                (unspec_volatile:SI [
                        (mem/v:SI (plus:SI (reg/v/f:SI 262 [ vlc ])
                                (const_int 16 [0x10])) [-1 S4 A32])
                        (reg/v/f:SI 262 [ vlc ])
                        (reg/f:SI 1 dx [357])
                    ] UNSPECV_CMPXCHG))
            (set (reg:CCZ 17 flags)
                (compare:CCZ (unspec_volatile:SI [
                            (mem/v:SI (plus:SI (reg/v/f:SI 262 [ vlc ])
                                    (const_int 16 [0x10])) [-1 S4 A32])
                            (reg/v/f:SI 262 [ vlc ])
                            (reg/f:SI 1 dx [357])
                        ] UNSPECV_CMPXCHG)
                    (reg/v/f:SI 262 [ vlc ])))
        ]) /root/ffmpeg-static/src/ffmpeg/libavutil/atomic_gcc.h:57 2109 {*sync_compare_and_swapsi}
     (expr_list:REG_DEAD (reg/f:SI 1 dx [357])
        (expr_list:REG_UNUSED (reg:CCZ 17 flags)
            (nil))))
/root/ffmpeg-static/src/ffmpeg/libavcodec/bitstream.c:348: confused by earlier errors, bailing out
CC      libavcodec/bmpenc.o
CC      libavcodec/bmv.o
CC      libavcodec/brender_pix.o
CC      libavcodec/c93.o
Preprocessed source stored into /tmp/cc0SPiX2.out file, please attach this to your bugreport.
make: *** [libavcodec/bitstream.o] Error 1
make: *** Waiting for unfinished jobs....

[burek]

duplicate of what?

[Michael Niedermayer]

Replying to burek:

duplicate of what?

a ticket that id like to close but cant as i dont know which ticket that is

[burek]

I'm not sure why cehoyos did not provide the link to the duplicate issue, but I can only guess that this is the issue that might be that duplicate: #2823

[burek]

Just to mention that he did care to reply/close the other ticket, but for some reason he did not care to update this one...

[Carl Eugen Hoyos]

Replying to burek:

I'm not sure why cehoyos did not provide the link to the duplicate issue, but I can only guess that this is the issue that might be that duplicate: #2823

Could you elaborate what you mean with guess?