[llvm-dev] loop unroll factor

[Hal Finkel via llvm-dev]

On 06/23/2017 09:39 PM, hameeza ahmed wrote:
> thank you;
> did with this;
> -force-vector-interleave.
>
> What is the difference between -loop-vectorize and -O3 in opt?
> I am using O3 its fine?

-O3 enables a bunch of different optimizations, the loop vectorizer 
included.

  -Hal

>
> On Sat, Jun 24, 2017 at 7:33 AM, Hal Finkel <hfinkel at anl.gov 
> <mailto:hfinkel at anl.gov>> wrote:
>
>     As I recall, you can use #pragma clang loop unroll(n) interleave(m)
>
>     To use an unrolling factor of n and an interleaving factor of m.
>
>      -Hal
>
>     On 06/23/2017 09:30 PM, hameeza ahmed wrote:
>>     how to set loop unroll factor in llvm?
>>
>>
>
>     -- 
>     Hal Finkel
>     Lead, Compiler Technology and Programming Languages
>     Leadership Computing Facility
>     Argonne National Laboratory
>
>

-- 
Hal Finkel
Lead, Compiler Technology and Programming Languages
Leadership Computing Facility
Argonne National Laboratory

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20170623/62c9f0b8/attachment-0001.html>