Index: lib/Analysis/ScalarEvolution.cpp
===================================================================
--- lib/Analysis/ScalarEvolution.cpp
+++ lib/Analysis/ScalarEvolution.cpp
@@ -1318,12 +1318,12 @@
   }
 
   // If the input value is a chrec scev, truncate the chrec's operands.
-  if (const SCEVAddRecExpr *AddRec = dyn_cast<SCEVAddRecExpr>(Op)) {
-    SmallVector<const SCEV *, 4> Operands;
-    for (const SCEV *Op : AddRec->operands())
-      Operands.push_back(getTruncateExpr(Op, Ty, Depth + 1));
-    return getAddRecExpr(Operands, AddRec->getLoop(), SCEV::FlagAnyWrap);
-  }
+//  if (const SCEVAddRecExpr *AddRec = dyn_cast<SCEVAddRecExpr>(Op)) {
+//    SmallVector<const SCEV *, 4> Operands;
+//    for (const SCEV *Op : AddRec->operands())
+//      Operands.push_back(getTruncateExpr(Op, Ty, Depth + 1));
+//    return getAddRecExpr(Operands, AddRec->getLoop(), SCEV::FlagAnyWrap);
+//  }
 
   // The cast wasn't folded; create an explicit cast node. We can reuse
   // the existing insert position since if we get here, we won't have