[SimpleLoopUnswitch] Verify LoopInfo after turning guards to branches

SplitBlockAndInsertIfThen doesn't correctly update LoopInfo when called
with Unreachable=true, which is the case when we turn guards to branches
in SimpleLoopUnswitch.

This adds LoopInfo verification before returning from turnGuardIntoBranch.

1 files changed, 1 insertions, 0 deletions

diff --git a/llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp b/llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp
index 6034b6b..176c66f 100644
--- a/llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp
+++ b/llvm/lib/Transforms/Scalar/SimpleLoopUnswitch.cpp
@@ -2735,6 +2735,7 @@ static BranchInst *turnGuardIntoBranch(IntrinsicInst *GI, Loop &L,
       MSSAU->getMemorySSA()->verifyMemorySSA();
   }
 
+  LI.verify(DT);
   ++NumGuards;
   return CheckBI;
 }