Author: Christophe Theron
Date: 03:15:55 06/15/00
Go up one level in this thread
On June 14, 2000 at 17:29:07, Dave Gomboc wrote:
>On June 14, 2000 at 16:17:25, Christophe Theron wrote:
>
>>The availability of 64 bits processors changes nothing. Unless some 64 bits
>>processors are so lousy that 8, 16 and 32 bits operations become slower than 64
>>bits ops...! :)
>
>I don't think it is unusual for certain operations on sizes smaller than the
>processor word size to take longer than they would if they used the processor's
>word size. Indeed, it wouldn't even be unusual for it to be possible without
>first sign-extending or zero-extending from the smaller size to the processor
>word size. AFAIK, 80x86 is a bit freaky in that it tries very hard to support
>8-bit and 16-bit operations in registers as quickly as 32-bit operations.
>
>Dave
That would be a very unfair way for bitboards to win the contest! :)
Christophe
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