On Wed, 25 Jul 2012, Ronald S. Bultje wrote:

> diff --git a/libavcodec/x86/dct32_sse.asm b/libavcodec/x86/dct32_sse.asm
> index e3c8a45..351c88d 100644
> --- a/libavcodec/x86/dct32_sse.asm
> +++ b/libavcodec/x86/dct32_sse.asm
> @@ -278,8 +278,6 @@ cglobal dct32_float_avx, 2,3,8, out, in, tmp
>      vperm2f128  m0, m1, m1, 0x31
>      vmovaps [outq+96], m1
>
> -    vzeroupper
> -
>      ;    pass 6, no SIMD...
>  INIT_XMM
>      PASS6_AND_PERMUTE

This one is followed by xmm instructions in the same function, so moving
it to RET doesn't work. And the INIT_XMM means it doesn't happen at RET
either. So just don't remove it.

--Loren Merritt
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