Re: x86-64 Hammer and IA64 Itainium

[Sergey Babkin]

"Michael C . Wu" wrote:
> 
> With the branch prediction, cache tracing, and EPIC instructions,
> you really want to use an ILP compiler.  Without a compiler that
> can decide on good ways to output binaries that run with all the IA-64
> innovations^Wreinvention-of-the-wheels.

Anothing interesting point is that the optimisation for IA-64
seems to be highly processor-specific: the code optimized for
Itanium won't be optimal for McKinley and vice versa.  I've heard
an estimation of about 1.5 times speed increase due to the
model-specific optimisation.

-SB

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