Index: llvm/trunk/lib/Transforms/Utils/PredicateInfo.cpp
===================================================================
--- llvm/trunk/lib/Transforms/Utils/PredicateInfo.cpp
+++ llvm/trunk/lib/Transforms/Utils/PredicateInfo.cpp
@@ -611,7 +611,7 @@
     }
 
     convertUsesToDFSOrdered(Op, OrderedUses);
-    std::sort(OrderedUses.begin(), OrderedUses.end(), Compare);
+    std::stable_sort(OrderedUses.begin(), OrderedUses.end(), Compare);
     SmallVector<ValueDFS, 8> RenameStack;
     // For each use, sorted into dfs order, push values and replaces uses with
     // top of stack, which will represent the reaching def.