[Analysis][Docs] Parents of loops documentation.
authorStefanos Baziotis <sdi1600105@di.uoa.gr>
Fri, 21 Feb 2020 23:07:53 +0000 (17:07 -0600)
committerMichael Kruse <llvm-project@meinersbur.de>
Fri, 21 Feb 2020 23:11:53 +0000 (17:11 -0600)
commit393f4e8ac263d0debecb571bbab69bcf31474cdb
tree6d10840ef554ff07d697f28547482268c4c6b068
parent215a31115f89c851331a822e67aa4528ba5c21e6
[Analysis][Docs] Parents of loops documentation.

Recently I had to use it and although one assumes it returns null if
there's no parent loop, I think it helps to doc it.

Reviewed By: Meinersbur

Differential Revision: https://reviews.llvm.org/D74890
llvm/docs/LoopTerminology.rst
llvm/include/llvm/Analysis/LoopInfo.h