From b76247b8b1534f42d6fcaa2290c8e4e1baf5443a Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Thu, 3 Jul 2008 05:55:03 +0000
Subject: [PATCH] LoopUnswitch does not preserve dominator info in all cases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53085 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Transforms/Scalar/LoopUnswitch.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/Transforms/Scalar/LoopUnswitch.cpp b/lib/Transforms/Scalar/LoopUnswitch.cpp
index b6c6e03609d..f57b7bb5194 100644
--- a/lib/Transforms/Scalar/LoopUnswitch.cpp
+++ b/lib/Transforms/Scalar/LoopUnswitch.cpp
@@ -112,8 +112,9 @@ namespace {
       AU.addPreserved<LoopInfo>();
       AU.addRequiredID(LCSSAID);
       AU.addPreservedID(LCSSAID);
-      AU.addPreserved<DominatorTree>();
-      AU.addPreserved<DominanceFrontier>();
+      // FIXME: Loop Unswitch does not preserve dominator info in all cases.
+      // AU.addPreserved<DominatorTree>();
+      // AU.addPreserved<DominanceFrontier>();
     }
 
   private:
-- 
2.34.1