diff --git a/clang/include/clang/Basic/BuiltinsPPC.def b/clang/include/clang/Basic/BuiltinsPPC.def
--- a/clang/include/clang/Basic/BuiltinsPPC.def
+++ b/clang/include/clang/Basic/BuiltinsPPC.def
@@ -57,10 +57,10 @@
 
 BUILTIN(__builtin_altivec_dss, "vUi", "")
 BUILTIN(__builtin_altivec_dssall, "v", "")
-BUILTIN(__builtin_altivec_dst, "vvC*iUi", "")
-BUILTIN(__builtin_altivec_dstt, "vvC*iUi", "")
-BUILTIN(__builtin_altivec_dstst, "vvC*iUi", "")
-BUILTIN(__builtin_altivec_dststt, "vvC*iUi", "")
+BUILTIN(__builtin_altivec_dst, "vvC*iUIi", "")
+BUILTIN(__builtin_altivec_dstt, "vvC*iUIi", "")
+BUILTIN(__builtin_altivec_dstst, "vvC*iUIi", "")
+BUILTIN(__builtin_altivec_dststt, "vvC*iUIi", "")
 
 BUILTIN(__builtin_altivec_vexptefp, "V4fV4f", "")
 
diff --git a/clang/test/CodeGen/builtins-ppc-error.c b/clang/test/CodeGen/builtins-ppc-error.c
--- a/clang/test/CodeGen/builtins-ppc-error.c
+++ b/clang/test/CodeGen/builtins-ppc-error.c
@@ -73,3 +73,11 @@
   __builtin_unpack_vector_int128(vsllli, index); //expected-error {{argument to '__builtin_unpack_vector_int128' must be a constant integer}}
   __builtin_unpack_vector_int128(vsllli, 5); //expected-error {{argument value 5 is outside the valid range [0, 1]}}
 }
+
+
+void testDST(int index) {
+  vec_dst(&vsi, index, index); //expected-error {{argument to '__builtin_altivec_dst' must be a constant integer}}
+  vec_dstt(&vsi, index, index); //expected-error {{argument to '__builtin_altivec_dstt' must be a constant integer}}
+  vec_dstst(&vsi, index, index); //expected-error {{argument to '__builtin_altivec_dstst' must be a constant integer}}
+  vec_dststt(&vsi, index, index); //expected-error {{argument to '__builtin_altivec_dststt' must be a constant integer}}
+}