diff --git a/clang/lib/AST/ExprConstant.cpp b/clang/lib/AST/ExprConstant.cpp
index 0a2cc7b3d6d5..8ca33cbd20c5 100644
--- a/clang/lib/AST/ExprConstant.cpp
+++ b/clang/lib/AST/ExprConstant.cpp
@@ -5262,7 +5262,7 @@ VectorExprEvaluator::VisitInitListExpr(const InitListExpr *E) {
   while (CountElts < NumElements) {
     // Handle nested vector initialization.
     if (CountInits < NumInits 
-        && E->getInit(CountInits)->getType()->isExtVectorType()) {
+        && E->getInit(CountInits)->getType()->isVectorType()) {
       APValue v;
       if (!EvaluateVector(E->getInit(CountInits), v, Info))
         return Error(E);
diff --git a/clang/test/CodeGenCXX/static-init-4.cpp b/clang/test/CodeGenCXX/static-init-4.cpp
new file mode 100644
index 000000000000..a4bb987c8d3d
--- /dev/null
+++ b/clang/test/CodeGenCXX/static-init-4.cpp
@@ -0,0 +1,7 @@
+// RUN: %clang_cc1 -std=c++11 -S -emit-llvm -o - %s -triple x86_64-linux-gnu | FileCheck %s
+
+typedef __attribute__((vector_size(4*4))) float float32x4_t;
+union QDSUnion { float32x4_t q; float s[4]; };
+constexpr float32x4_t a = {1,2,3,4};
+QDSUnion t = {{(a)}};
+// CHECK: @t = global %union.QDSUnion { <4 x float> <float 1.000000e+00, float 2.000000e+00, float 3.000000e+00, float 4.000000e+00> }