Replace lambdas with named functors in transform_tensor_descriptor#3589
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Lambda expressions in transform_tensor_descriptor created unique template instantiations for each capture combination. This change replaces lambdas with named functor structs to reduce instantiation count: - Add merge_sequences_functor and unpack_and_merge_sequences helper - Add convert_visible_to_hidden_id and convert_visible_ids_to_hidden_ids - Add generate_arithmetic_sequence_from_scan Build analysis shows instantiation count dropped from 388 to 32 (92% reduction).
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Summary
transform_tensor_descriptortransform_tensor_descriptorinstantiations from 388 to 32 (92% reduction)Changes
unpack_and_merge_sequenceshelper to replace lambda inGetNumOfHiddenDimensiongenerate_identity_sequencesinmatrix_padder.hppWhy It Works
Each lambda creates a unique closure type, causing
transform_tensor_descriptorto be instantiated separately for every call site. Named functors share a single type, so the compiler reuses the same instantiation.Test Plan
PR Stack
__make_integer_seqTracking issue: #3575