[Gllug] arch & cpu number confusion

[Richard Jones]

On Fri, Jan 06, 2006 at 10:52:28AM +0000, Nix wrote:
> speedups under some circumstances because we can use CMOV, and of course
> -march=sparcv8 and above has huge advantages for some loads on SPARCs
> because SPARCv7 didn't have integer multiply or divide
> operations. (There is an enormous speedup to SSH negotiation when
> OpenSSL is compiled for SPARCv8, for instance.)

I thought that SPARCv7 was forward compatible - ie. it would trap the
unknown instruction and emulate it?  Assumes your OS knows about the
new instructions of course ...

Rich.

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