finding in 4.5.2 20101003 (Linaro) [release 4.5-2010.10-0]

Andrew Stubbs ams at codesourcery.com
Thu Oct 21 08:30:21 UTC 2010


Hi Leonid,

You do indeed have a compiler bug here!

We now have a fix for it, and the Linaro GCC sources should be updated 
in the next few days.

If you don't want to wait for that, you can find the patch here:
   http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45805

Apologies for the inconvenience.

Andrew

On 19/10/10 10:51, leonid.moiseichuk at nokia.com wrote:
> Hello,
>
> Sorry I cannot find a bugzilla. One issue detected during compilation of
> ffmpeg, it looks like
>
> gcc -DHAVE_AV_CONFIG_H -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -I.
> -I"/home/ldm/misc/tc/suite/cases/ffmpeg/ffmpeg" -O3 -D_ISOC99_SOURCE
> -D_POSIX_C_SOURCE=200112 -std=c99 -fomit-frame-pointer
> -Wdeclaration-after-statement -Wall -Wno-switch -Wdisabled-optimization
> -Wpointer-arith -Wredundant-decls -Wno-pointer-sign -Wcast-qual
> -Wwrite-strings -Wtype-limits -Wundef -fno-math-errno -fno-signed-zeros
> -c -o libavcodec/dsputil.o libavcodec/dsputil.c
>
> /tmp/ccK6jdSP.s: Assembler messages:
>
> /tmp/ccK6jdSP.s:34764: Error: VFP/Neon double precision register
> expected -- `vmovl.s16 q3,s12'
>
> /tmp/ccK6jdSP.s:34781: Error: VFP/Neon double precision register
> expected -- `vmovl.s16 q2,s8'
>
> /tmp/ccK6jdSP.s:34798: Error: VFP/Neon double precision register
> expected -- `vmovl.s16 q1,s4'
>
> /tmp/ccK6jdSP.s:34800: Error: VFP/Neon double precision register
> expected -- `vmovl.s16 q0,s0'
>
> /tmp/ccK6jdSP.s:34820: Error: VFP/Neon double precision register
> expected -- `vmovl.s16 q8,s8'
>
> The sources, assembler and test case are attached.
>
> With best wishes,
>
> Leonid
>
>
>
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