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AdamNiederer / faster

SIMD for humans
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Incorrect count_ones result with -C target-cpu=native #54

Closed andersk closed 6 years ago

andersk commented 6 years ago 
use {faster::Popcnt, std::simd::u64x4};
u64x4::new(!0, !0, 0, 0).count_ones()

correctly returns 128 without -C target-cpu=native, and incorrectly returns 18446744073709551488 (i.e. !127) with -C target-cpu=native.