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Subject: How does SHR/SHL work?

Author: Severi Salminen

Date: 10:38:43 02/14/01

Hi!

I managed to speedup my movegenerator quite a bit making the crucial assembler
functions completely branchless. Then I noticed one thing I was not quite sure
about. I was using SHR eax,cl with values of cl more than 32 - first I didn't
consider this possibility. So: Is SHR eax,33 same as SHR eax,1 - is cl allways
between 0 and 32? It seems to be. Everything seemed to function just right so
was I just very lucky to _not_ notice this before trying?

Severi

Re: How does SHR/SHL work? Vincent Diepeveen 15:10:26 02/14/01
- Re: How does SHR/SHL work? Severi Salminen 08:54:36 02/15/01
Re: How does SHR/SHL work? Olaf Jenkner 12:00:23 02/14/01

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