Re: [Qemu-devel] [RFC] find_next_bit optimizations

[Paolo Bonzini]

Il 11/03/2013 18:06, ronnie sahlberg ha scritto:
> Even more efficient might be to do bitwise instead of logical or
> 
>> >        if (tmp | d1 | d2 | d3) {
> that should remove 3 of the 4 conditional jumps
> and should become 3 bitwise ors and one conditional jump

Without any serious profiling, please let the compiler do that.

Paolo