Properly use DT.verify in LoopSimplifyCFG

llvm-svn: 352621

llvm/lib/Transforms/Scalar/LoopSimplifyCFG.cpp

@@ -541,7 +541,7 @@ public:
 
 #ifndef NDEBUG
     // Make sure that we have preserved all data structures after the transform.
-    DT.verify();
+    assert(DT.verify() && "DT broken after transform!");
     assert(DT.isReachableFromEntry(L.getHeader()));
     LI.verify(DT);
 #endif