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Thread: Optimization manuals

  1. #1

    Optimization manuals


    roaming the net i've found this:

    worth of a look, especially for the updated latency/throughput instruction sets, very very useful information for speed optimizing a critical code snippet.

    (...not sure of it is legal to dl & put them in collaborative library, but surely interesting stuff).

    (! Sandy bridge measurements too? cool. Too bad there arent Bulldozer measurements yet)
    interesting: on sandbridge, INC DEC NEG NOT takes 3 mops for memory and 1 from register, whereas add/sub takes 2 and 1. It means intel maintained the old approach of adding 1 mop to 'fix' the flags for the INC/DEC, but only for inc[mem] (on older p4 INC were taking 2 mops, 1 for add and 1 for flag fix).
    Last edited by Maximus; February 2nd, 2011 at 06:47. Reason: some notes...
    I want to know God's thoughts ...the rest are details.
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    ..."a shellcode is a command you do at the linux shell"...

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