zlacker

>>x1f604+(OP)
If you benchmark these, you'll likely find the version with the jump edges out the one with the conditional instruction in practice.

>>fooker+Ah
Compilers often under-generate conditional instructions. They implicitly assume (correctly) that most branches you write are 90/10 (ie very predictable), not 50/50. The branches that actually are 50/50 suffer from being treated as being 90/10.

>>pclmul+xn
The branches in this example are not 50/50.

Given a few million calls of clamp, most would be no-ops in practice. Modern CPUs are very good at dynamically observing this.