[LoopInfo] Add verification by recomputation.
Summary:
Current implementation of LI verifier isn't ideal and fails to detect
some cases when LI is incorrect. For instance, it checks that all
recorded loops are in a correct form, but it has no way to check if
there are no more other (unrecorded in LI) loops in the function. This
patch adds a way to detect such bugs.
Reviewers: chandlerc, sanjoy, hfinkel
Subscribers: llvm-commits, silvas, mzolotukhin
Differential Revision: https://reviews.llvm.org/D23437
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@280280 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed