[PATCH] D78911: [LV] Induction Variable does not remain scalar under tail-folding.

[Ayal Zaks via Phabricator via llvm-commits]

Ayal accepted this revision.
Ayal added a comment.
This revision is now accepted and ready to land.

Thanks for cleaning this up!
Just adding another follow-up.



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Comment at: llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:1869
   // vector IV.
   auto CreateSplatIV = [&](Value *ScalarIV, Value *Step) {
     Value *Broadcasted = getBroadcastInstrs(ScalarIV);
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This is now called only for VF=1, so doesn't really create vectors by splatting a scalar IV, only takes care of bump it across UF parts. Can be further cleaned-up, as a follow-up patch.


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  https://reviews.llvm.org/D78911/new/

https://reviews.llvm.org/D78911