diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index e843f5f..6f94076 100644
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -6425,7 +6425,7 @@
 
   // FIXME: is there such a thing as a truncating indexed store?
   if (ST->isTruncatingStore() && ST->isUnindexed() &&
-      Value.getValueType().isInteger()) {
+      Value.getValueType().isInteger() && !Value.getValueType().isVector()) {
     // See if we can simplify the input to this truncstore with knowledge that
     // only the low bits are being used.  For example:
     // "truncstore (or (shl x, 8), y), i8"  -> "truncstore y, i8"