Ignore dbg intrinsic while folding unconditional branch.

llvm-svn: 64242
diff --git a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
index d9c4b69..b5d7423 100644
--- a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
+++ b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
@@ -1339,7 +1339,8 @@
     if (!isa<DbgInfoIntrinsic>(BBI))
       break;
   }
-  if (isa<PHINode>(BBI) || &*BBI == Term)
+
+  if (isa<PHINode>(BBI) || &*BBI == Term || isa<DbgInfoIntrinsic>(BBI))
     return true;
   return false;
 }