In <[email protected]>, on
09/15/2013
at 06:16 PM, Jon Perryman <[email protected]> said:
>Comparing MIPS (or BIPS) for different platforms is useless where
>instruction sets are so diverse.
"Meaningless Indicator of Processor Speed"
>On the intel, 128 instructions are executed for a single MVC (a loop
>that increments a counter, if count not reached then loop (4
>instructions). 256 bytes / 8 bytes * 4 instructions = 128
>instructions needed for the single MVC instruction.
If the count is exactly 258 the the loop is a single MOV with a repeat
prefix. You need additional instructions if you don't know the length
to be a multiple of 8.
But your point remains valid, and is stronger if you look at the long
compare, convert, move and translate instructions on z.
--
Shmuel (Seymour J.) Metz, SysProg and JOAT
Atid/2 <http://patriot.net/~shmuel>
We don't care. We don't have to care, we're Congress.
(S877: The Shut up and Eat Your spam act of 2003)
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