> Caches are under a lot of pressure these days. More from data sizes than code sizes, at least in most performance-critical applications. Sure, bigger pointer

> Caches are under a lot of pressure these days. More from data sizes than code sizes, at least in most performance-critical applications. Sure, bigger pointers will lead to higher miss rates in caches that contain code, but that is unlikely to prove to be a bottleneck for real-world browser use (in the current version of the real world).