The sad fact is that most current computers are built to run Windows, meaning, yes, their processors are optimized to run code written in C. This is not entirely bad, because it helps make unixes run efficiently too, but we cannot expect anything very revolutionary at the ISA level unless we are willing too burn a couple billions. Azul Systems July processors designed to run Java, and, in particular, to run garbage collection efficiently, but it is so costly to build silicon they left the hardware business.