On Tue, 2 Apr 2024, Geoff Hill wrote:
Signed-off-by: Geoff Hill <ge...@geoffhill.org> --- libavcodec/aarch64/ac3dsp_init_aarch64.c | 5 ++++ libavcodec/aarch64/ac3dsp_neon.S | 35 ++++++++++++++++++++++++ tests/checkasm/ac3dsp.c | 26 ++++++++++++++++++ 3 files changed, 66 insertions(+)diff --git a/libavcodec/aarch64/ac3dsp_neon.S b/libavcodec/aarch64/ac3dsp_neon.S index fa8fcf2e47..4a78ec0b2a 100644 --- a/libavcodec/aarch64/ac3dsp_neon.S +++ b/libavcodec/aarch64/ac3dsp_neon.S @@ -88,3 +88,38 @@ function ff_ac3_sum_square_butterfly_int32_neon, export=1 st1 {v0.1d-v3.1d}, [x0] 1: ret endfunc + +function ff_ac3_sum_square_butterfly_float_neon, export=1 + cbz w3, 1f + movi v0.4s, #0 + movi v1.4s, #0 + movi v2.4s, #0 + movi v3.4s, #0 +0: ld1 {v30.4s}, [x1], #16 + ld1 {v31.4s}, [x2], #16 + fadd v16.4s, v30.4s, v31.4s + fsub v17.4s, v30.4s, v31.4s + fmul v30.4s, v30.4s, v30.4s + fadd v0.4s, v0.4s, v30.4s
The arm version here used vmla instead of separate vmul+vadd - is there any reason why we can't use fmla here?
// Martin _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
