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Even more optimization !

Saad Shuja
Prodigy 220 points

Hi,

I have the C code that i have to optimize. I have taken the following steps already

1. use Intrinsics where ever i could

2. Replaced some functions which were taking a lot many cycles with linear assembly.

Still i have not reached my Target.

I have also observed the replacing C function that use Intrinsics with linear assembly also does not make a lot of difference, in fact its hard to beat the C optimization iin most cases.

What should i do next ?

Thanks in Advance

  • 0
    TI__Expert 8150 points

    Saad, will be glad to help.
    Have you tried looking at the compiler feedback as part of the generated ASM file? Note you can request the compiler to generate .asm file by using the option -k. Is the feedback consistent with what you expect?
    Have you used 'restrict' for the data pointers to indicate to compiler the correct memory dependencies?
    What is your target and how off are you from that?
    What kind of function you are trying to implement? What your theoretical best estimate for this kernel?

    Regards,
    Gagan