@danluu Maybe it was a bug in handling of -mpopcnt (as opposed to -march=native or something)?
Handed coded assembly is still easier (and faster) than intrinsics: http://danluu.com/assembly-intrinsics/ …
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@comex I assume you mean the clang 3.0 thing? Maybe! If I ever get multiple versions of various compilers set up, I'll go back and test that - 1 more reply
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