diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -844,6 +844,9 @@
     ID.AddInteger(BA->getTargetFlags());
     break;
   }
+  case ISD::AssertAlign:
+    ID.AddInteger(cast<AssertAlignSDNode>(N)->getAlign().value());
+    break;
   } // end switch (N->getOpcode())
 
   // Target specific memory nodes could also have address spaces and flags