TIP: Click on subject to list as thread! ANSI
echo: 80xxx
to: BRIAN MCCLOUD
from: CRAIG HART
date: 1997-06-13 13:17:00
subject: ASM optimiser

Hi..
 > That part could be done without too much trouble...  like changing
 > multiple SHL
 > instructions to a single SHL instruction (286+ can have an immediate
 > value for
 > a SHL, but an 8086 can't),
SHL ,1 is valid on the 808x. The _difference_ is that 1 is the only 
egal
immediate value for the 808x processors.
 or turning a REP MOVSW into a REP MOVSD (it
 > would
 > have to find where you assigned CX as well)...
CX does not need to change for any form of the rep instruction. If what you 
are trying to say is that rep movsd uses ecx, guess again. it does not.
    Craig
--- FMail/386 1.20+
---------------
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