[PATCH] D85794: [WIP][llvm][LV] Replace `unsigned VF` with `ElementCount VF` [NFCI]

[Roger Ferrer Ibanez via Phabricator via llvm-commits]

rogfer01 added a comment.

Hi @fpetrogalli, thanks for this proposal.

We had to do similar things when we applied the LoopVectorizer to RISC-V V-ext. However we didn't use `ElementCount` so our version looks much less neat than your approach.

I think this direction makes a lot of sense.



================
Comment at: llvm/lib/Transforms/Vectorize/LoopVectorize.cpp:1250
     // Do the analysis once.
-    if (VF == 1 || Uniforms.find(VF) != Uniforms.end())
+    if ((VF == 1 && !VF.Scalable) || Uniforms.find(VF) != Uniforms.end())
       return;
----------------
Can we use `VF.isScalar()` here as well or I am missing something?


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