George Steed 53b65220da [AArch64] Add Neon dot-product implementation of SumSquareError ... The Neon dot-product instructions perform two widening steps rather than one, saving us the need to widen the absolute difference to 16-bits before accumulating. Additionally, the dot-product instructions tend to have better performance characteristics than traditional widening multiply instructions like SMLAL used in the existing SumSquareError_NEON code. Observed reduction in runtimes compared to the existing Neon kernel: Cortex-A55: -9.1% Cortex-A510: -36.7% Cortex-A76: -37.6% Cortex-A720: -48.8% Cortex-X1: -56.1% Cortex-X2: -42.6% Bug: libyuv:977 Change-Id: Ie20c69040cc47a803d8e95620d31e0bf1e1dac12 Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/5463945 Reviewed-by: Frank Barchard <fbarchard@chromium.org>		2024-04-25 20:54:48 +00:00
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libyuv	[AArch64] Add Neon dot-product implementation of SumSquareError	2024-04-25 20:54:48 +00:00
libyuv.h	NV12 Copy, include scale_uv.h	2020-12-08 18:54:16 +00:00