[cfe-dev] [llvm-dev] generate vectorized code

Rail Shafigulin via cfe-dev cfe-dev at lists.llvm.org
Fri Mar 18 13:47:38 PDT 2016


>
> Yes this IR does not build or shuffle any vector. Try to write a function
> that takes 8 ints and a pointer to a <4xi32>, builds two vectors with the 8
> ints,
>

This might sound like a dumb question, but how does one build a vector of
ints out of regular ints in IR?


> sum them, and store the result to the pointer.
>
>
>
> In other words I left the code as is.
>
> However if I use a .c code and run it through clang, I don't see any
> vector instructions. I'm puzzled. What am I doing wrong? There seems to be
> a step missing, the one that will generate vectorized IR, but I can't seem
> to find how to do it.
>
>
> Try: clang -O3 -emit-llvm -S test.c
>
> --
> Mehdi
>
>
>
> Any help on this is really appreciated.
>
> --
> Rail Shafigulin
> Software Engineer
> Esencia Technologies
>
>
>


-- 
Rail Shafigulin
Software Engineer
Esencia Technologies
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