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c82803097f
Following up on the comments in https://reviews.llvm.org/D144108 this patch refactors the im2col conversion patterns for `linalg.conv_2d_nhwc_hwcf` and `linalg.conv_2d_nchw_fchw` convolutions to use gather semantics for the im2col packing `linalg.generic`. Follow up work can include a similar pattern for depthwise convolutions and a generalization of the patterns here to work with any `LinalgOp` as well. Differential Revision: https://reviews.llvm.org/D144678
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