[PATCH] D63885: [LOOPINFO] Introduce the loop guard API.

[Whitney via Phabricator via llvm-commits]

Whitney added a comment.

@Meinersbur As discussed, I strengthened the definition of the loop guard which disallow conditional terminator instructions inside the guarded region outside of the loop of interest. 
@Meinersbur @reames @etiotto Do you think this patch is now good enough to land as the first patch? We can loosen or strengthen the definition of the loop guard in later patches when applicable.


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https://reviews.llvm.org/D63885