Add generate_identity_sequences helper for common pattern#3588
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Add generate_identity_sequences helper for common pattern#3588tenpercent wants to merge 1 commit intotenpercent/old-ck-pack-rewritesfrom
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This was referenced Jan 16, 2026
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This adds an optimized helper for the common generate_tuple pattern:
generate_tuple([](auto i) { return Sequence<i.value>{}; }, N)
The new generate_identity_sequences<N>() function creates
Tuple<Sequence<0>, Sequence<1>, ..., Sequence<N-1>> without
requiring lambda instantiation at each call site.
Updated 21 call sites across threadwise_tensor_slice_transfer,
wrapper utilities, and layout files to use the new helper.
Build time improvement: ~1.1% wall-clock (18.3s -> 18.1s)
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This was referenced Jan 19, 2026
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Summary
generate_identity_sequences<N>()helper that returnsTuple<Sequence<0>, Sequence<1>, ..., Sequence<N-1>>Motivation
Multiple call sites use
generate_tuple([](auto i) { return Sequence<i>{}; }, Number<N>{})pattern. A named helper reduces lambda instantiations.Why It Works
Each lambda expression creates a unique closure type. When passed to template functions like
generate_tuple, this causes separate template instantiations at every call site. A named helper shares a single type across all uses.Test Plan
PR Stack
__make_integer_seqTracking issue: #3575