SjoerdMeijer added a comment.

Hi Hideki,

I think you're comments are spot on:

> It all depends on to whom we are providing these pragmas.

Pragma's are user-facing "options" to override or force  compiler decision 
making. I don't think there's another way to look at it, but please correct me 
if I'm wrong.

That's exactly the reason why I think `vectorize(disable)` should disable 
vectorisation for that loop. I just don't see what else a user would expect.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D66796/new/

https://reviews.llvm.org/D66796



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