Not really, because the rename regs only limit you in very straight-line code with little else. Basically, very well behaved inner loops. If you are linking two

Not really, because the rename regs only limit you in very straight-line code with little else. Basically, very well behaved inner loops. If you are linking two different libraries into your code that alone probably adds enough control flow and other stuff to make something else limit the code. In general, being limited by regs is a very happy problem to have, as it usually means your code is already extremely tight and well optimized.