commit d6bf3d525aa5df983eb488f3800e172d11072a0f
author Devang Patel <dpatel@apple.com> Mon Jul 30 20:22:53 2007 +0000
committer Devang Patel <dpatel@apple.com> Mon Jul 30 20:22:53 2007 +0000
tree f66ecb87b4ed2e61eb03d6239317621efd812148
parent 05b6928f1f0beded4d2211aac1500fbcd148eb35

Loop Rotation pass preserves dominator tree and frontier.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40603 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/Scalar/LoopRotation.cpp

diff --git a/lib/Transforms/Scalar/LoopRotation.cpp b/lib/Transforms/Scalar/LoopRotation.cpp
index d35a8ed..a9c3fb9 100644
--- a/lib/Transforms/Scalar/LoopRotation.cpp
+++ b/lib/Transforms/Scalar/LoopRotation.cpp
@@ -62,6 +62,8 @@
       AU.addPreserved<LoopInfo>();
       AU.addRequiredID(LoopSimplifyID);
       AU.addPreservedID(LoopSimplifyID);
+      AU.addPreserved<DominatorTree>();
+      AU.addPreserved<DominanceFrontier>();
     }
 
     // Helper functions