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Politics : Formerly About Advanced Micro Devices
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To: John Evans who wrote (123066)8/25/2000 11:49:47 AM
From: Ali Chen  Read Replies (2) of 1584946
 
<..average number of dependencies in twenty instructions of x86 code>

I believe there were some academic studies about
average paralellism capabilities of x86 codes,
and it was found that the ILP is about 3.5-4,
largerly due to data dependencies. I also believe that
the register renaming technique somewhat relaxes
this, but not much. So I would guess that for
a 20 stages there will be 3 unresolved data dependencies
at least.

Regards,
- Ali
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