diff --git a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
index 0bfa897..d0a6234 100644
--- a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
@@ -4118,10 +4118,7 @@
   unsigned StoreWidth = MemTy.getSizeInBits();
   unsigned StoreSizeInBits = 8 * MemTy.getSizeInBytes();
 
-  if (StoreWidth != StoreSizeInBits) {
-    if (SrcTy.isVector())
-      return UnableToLegalize;
-
+  if (StoreWidth != StoreSizeInBits && !SrcTy.isVector()) {
     // Promote to a byte-sized store with upper bits zero if not
     // storing an integral number of bytes.  For example, promote
     // TRUNCSTORE:i1 X -> TRUNCSTORE:i8 (and X, 1)