LLVM codgen improvement, count bits intrinsics

[NaN]

On Sunday, 28 April 2019 at 11:22:57 UTC, Johan Engelen wrote:
> On Saturday, 27 April 2019 at 20:25:01 UTC, NaN wrote:
>>
> Two remarks:
> 1. Conditional move is not necessarily faster than branching
> 2. On recent CPUs `tzcnt` is the better instruction that has 
> defined output for input 0

Unfortunately neither my CPU or myself are very recent.