[DO NOT REVIEW]: Support NCHWc activations x NCHWc weights kernel on non-Windows ARM64 platforms#27790
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[DO NOT REVIEW]: Support NCHWc activations x NCHWc weights kernel on non-Windows ARM64 platforms#27790hariharans29 wants to merge 42 commits intomainfrom
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Description
It takes inspiration from the existing NCHW activations x NCHWc weights path and processes 2 output locations in the interior non-padded hot path for 2 filters and 1 output location for tail. It splits up filter count 3 as 2+1 passes and filter count 4 as 2+2 passes. This does much better than the existing C++ implementation that only processes 1 output pixel per loop. For thew padded output pixels, we still fall back to the C++ path.
This is essentially a dupe of #27788 and on comparing perf, the kernel in #27788 does better on the shareable model referenced in that PR by about 5% on a Graviton instance. Hence, we will take that in over investing time in improving this implementation further.
Motivation and Context
Initial untuned NCHWc A x NCHWc B ARM64 kernel