On Sat, Dec 07, 2002 at 12:33:37AM +0100, Thiemo Seufer wrote:
> > I'd worry less if that was just 220kB of unused memory wasted. But it's
> > actually inflated code, it's wasted i-cache and cycles. 220kB translates
> > to alost 7 times the size of today's typical 32kB i-cache.
> >
> > Even if Thiemo was right this trick is probably the biggest micro-
> > optimization of the decade ...
>
> Even if it was such a big win it would IMHO be better to use N64 and
> teach the assembler some optimization for such register loads.
> -Wa,--sign-extend-immediates shouldn't be that complicated to implement.
The entire situation will change anyway once gcc no longer emits macro
instructions such as la or dla.
Ralf
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