Re: Minutes from Feb 21 LSE Call

dean gaudet
2003-02-24T01:43:14Z

On Sun, 24 Feb 2003, Kenneth Johansson wrote:

> If you really do mean compressed cache I don't think anybody has done
> that for real.

people are doing this *for real* -- it really depends on what you define
as compressed.

ARM thumb is definitely a compression function for code.

x86 native instructions are compressed compared to the RISC-like micro-ops
which a processor like athlon, p3, and p4 actually execute. for similar
operations, an x86 would average probably 1.5 bytes to encode what a
32-bit RISC would need 4 bytes to encode.

-dean