Add HiFi-optimized Xtensa Conv kernels - #3726
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unmeshna017 wants to merge 2 commits into
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Optimize the Xtensa conv kernels using the HiFi NNLib: dilated/group conv, float32, and Int4 filter dispatch, plus new reference fallbacks (conv_float32_reference.cc, conv_int8_int16_float32.cc). Registers the new helper sources in xtensa.inc. Depends on the 09_03_2026 NNLib release (PR#3703) for the v2 per-channel conv APIs (e.g. xa_nn_conv2d_std_v2_per_chan_sym4sxasym8s).
Add HIFI_IQ to the include guard so xa_nnlib_api.h and xa_nnlib_standards.h are pulled in for the hifi_iq build.
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Optimize the Xtensa conv kernels using the HiFi NNLib: dilated/group conv, float32, and Int4 filter dispatch, plus new reference fallbacks (conv_float32_reference.cc, conv_int8_int16_float32.cc). Registers the new helper sources in xtensa.inc.
Depends on the 09_03_2026 NNLib release (PR#3703) for the v2 per-channel conv APIs
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