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Add Xtensa reference/trivial data-movement kernels - #3702

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unmeshna017 wants to merge 2 commits into
tensorflow:mainfrom
unmeshna017:xtensa-data-movement-reference
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unmeshna017 wants to merge 2 commits into
tensorflow:mainfrom
unmeshna017:xtensa-data-movement-reference

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Adds Xtensa reference implementations for the trivial data-movement ops:
fill, circular_buffer, expand_dims, pack, unpack, split and split_v.

@cad-audio @joshih-cad

Adds Xtensa kernels for fill and circular_buffer (via xa_nn_memset/xa_nn_memmove) plus reference expand_dims, pack, unpack, split, and split_v. Each shares a filename with its reference kernel and is auto-substituted by specialize_files.py, so no xtensa.inc changes are required.
fill: require constant dims tensor (IsConstantTensor) matching master. circular_buffer: add CircularBufferReset reset callback to registration.
@unmeshna017
unmeshna017 requested a review from a team as a code owner September 11, 2026 06:43
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