Optimize strided loop assignment for runtime-contiguous layout types with contiguous assignment #2810
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…with contiguous assignment
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Description
This is important for types that are
dynamicstatically, but still contiguous at runtime. I haven't runtime gains yet, but I'm guessing it should have an impact (especially due to #2809 as a model).The duplicated
!E1::contiguous_layoutlogic is to give compilers an easier time to evaluate theifas a constexpr, deleting the uncontiguous path for clearly statically contiguous layouts.