Re: [OFF-TOPIC] Cobalt 64-bit, what for? (was: 64-bit fix)

[Dominic Sweetman <dom@mips.com>]

Ralf Baechle (ralf@linux-mips.org) writes:

> > And doesn't 64 bit mode have costs of its own (doubled i-fetch bandwidth
> > for starters)?

64-bit MIPS CPUs still have 32-bit instructions... it's the registers
and addressing range which grow, not the instructions.

Program data segments tend to grow when you use 64-bit pointers (N64
does, but N32 - paradoxically still a 64-bit ABI - doesn't)

--
Dominic Sweetman
MIPS Technologies