On Wed, 3 Jan 2007, Denis Vlasenko wrote:
>
> IOW: yet another slot in instruction opcode matrix and thousands of
> transistors in instruction decoders are wasted because of this
> "clever invention", eh?
Well, in all fairness, it can probably help more on certain
microarchitectures. Intel is fairly aggressively OoO, especially in Core
2, and predicted branches are not only free, they allow OoO to do a great
job around them. But an in-order architecture doesn't have that, and cmov
might show more of an advantage there.
Linus
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