On 11/10/2024 3:38 PM, Frank Plowman wrote:
These assembly optimisations can use MMX. They failed to reset the floating-point state when they are done, hence subsequent floating-point operations return nonsense values.This fixes the FATE failure for vvc-output-ref on x86-32, e.g. https://fate.ffmpeg.org/report.cgi?slot=x86_32-uubuntu-mingw32-gcc&time=20241110053421 Signed-off-by: Frank Plowman <p...@frankplowman.com> --- libavcodec/x86/videodsp.asm | 1 + 1 file changed, 1 insertion(+) diff --git a/libavcodec/x86/videodsp.asm b/libavcodec/x86/videodsp.asm index 3cc07878d3..6144f13fca 100644 --- a/libavcodec/x86/videodsp.asm +++ b/libavcodec/x86/videodsp.asm @@ -313,6 +313,7 @@ cglobal emu_edge_vfix %+ %%n, 1, 5, 1, dst, src, start_y, end_y, bh jnz .bottom_loop ; }.end:+ emms
This needs to be added only for the MMX version, not the SSE one, so wrap it in a %if mmsize == 8 check.
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