diff --git a/lib/CodeGen/LoopAligner.cpp b/lib/CodeGen/LoopAligner.cpp
index 51c6356..906e888 100644
--- a/lib/CodeGen/LoopAligner.cpp
+++ b/lib/CodeGen/LoopAligner.cpp
@@ -34,6 +34,7 @@
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
       AU.addRequired<MachineLoopInfo>();
       AU.addPreserved<MachineLoopInfo>();
+      AU.setPreservesAll();
       MachineFunctionPass::getAnalysisUsage(AU);
     }
   };