[PATCH] D65884: [ARM] MVE Tail Predication

Sjoerd Meijer via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Mon Aug 12 23:38:33 PDT 2019


SjoerdMeijer added a comment.



>>   In D65884#1621209, @SjoerdMeijer wrote:
>>   
>>   Thinking out loud what the strategy could be so that we properly test the whole flow.....
> 
> I think it will be okay to land this when we can, it's disabled and the vectorizer won't be generating suitable input anyway. The finalisation can happen last and with no real rush - isel should still generate a valid > loop, the vctp instructions will be more efficient that doing the arithmetic with vectors in the loop. So really, isel for masked load/stores and the vctp is the next most important bit because then we at least run llc. > Then we can prod the vectorizer into generating masked loops and we can find all the bugs :)

Ok, sounds like a good plan to me.


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