[PATCH] D36220: [Loop Vectorize] Added a separate metadata

[Kenneth Hilmersson via Phabricator via llvm-commits]

KennethH added a comment.

I have a question:

Is there any reason not to mark the scalar loop and the vectorized version with the "llvm.loop.vectorize.width" and "llvm.loop.interleave.count" metadata reflecting the real outcome from the LV. 
I.e 1, 1 for the scalar loop and VF, UF for the vectorized version? That would be possible after this change.

Our out of tree compiler have later loop passes that could benefit from that information. I do not know if would be of any use for any of the in-tree targets or if it would hurt something.


Repository:
  rL LLVM

https://reviews.llvm.org/D36220