Crop HLS layer #1501
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Crop HLS layer #1501
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This PR introduces support for the Crop node in FINN, enabling efficient implementation of ONNX gather nodes. The Gather node allows gathering entries from the axis dimension indexed by indices and concatenates them into an output tensor. FINN translates this concept to a Crop node that assumes a (N)HWC data layout. Cropping is possible on the H and W dimensions, and for 2D tensors, it operates on the W dimension with H assumed as 1. The PR leverages SIMD parallelism on the channel dimension (temporal). For detailed implementation, refer to the HLS code at https://github.com/Xilinx/finn-hlslib/blob/dev/crop.hpp.