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wideint SIMD #613

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mborland opened this issue May 30, 2024 · 1 comment

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mborland commented May 30, 2024

There are operations like: https://github.com/cppalliance/decimal/blob/develop/include/boost/decimal/detail/wide-integer/uintwide_t.hpp#L888 which are ripe for packing into AVX2 / ARM NEON instructions instead of repeated calculations.

mborland added the optimization label

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mborland commented Jul 12, 2024

I think ADX instructions may be the right move for this on x64. They are designed for multi-precision like applications with chained add or mul.

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Use wideint/SIMD for umul256 #634

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