diff --git a/clang/lib/Headers/altivec.h b/clang/lib/Headers/altivec.h
index 25c1b1de998df6..dadf6b5cf75bb8 100644
--- a/clang/lib/Headers/altivec.h
+++ b/clang/lib/Headers/altivec.h
@@ -12520,6 +12520,13 @@ vec_vrfiz(vector float __a) {
 
 /* The vector unpack instructions all have a big-endian bias, so for
    little endian we must reverse the meanings of "high" and "low."  */
+#ifdef __LITTLE_ENDIAN__
+#define vec_vupkhpx(__a) __builtin_altivec_vupklpx((vector short)(__a))
+#define vec_vupklpx(__a) __builtin_altivec_vupkhpx((vector short)(__a))
+#else
+#define vec_vupkhpx(__a) __builtin_altivec_vupkhpx((vector short)(__a))
+#define vec_vupklpx(__a) __builtin_altivec_vupklpx((vector short)(__a))
+#endif
 
 static __inline__ vector short __ATTRS_o_ai
 vec_unpackh(vector signed char __a) {
diff --git a/clang/test/CodeGen/builtins-ppc-altivec.c b/clang/test/CodeGen/builtins-ppc-altivec.c
index e7593ca9021cf5..8edef9806af22f 100644
--- a/clang/test/CodeGen/builtins-ppc-altivec.c
+++ b/clang/test/CodeGen/builtins-ppc-altivec.c
@@ -5788,6 +5788,10 @@ void test6() {
 
   res_vui = vec_unpackh(vp);
 // CHECK: @llvm.ppc.altivec.vupkhpx
+// CHECK-LE: @llvm.ppc.altivec.vupklpx
+
+  res_vui = vec_vupkhpx(vp);
+// CHECK: @llvm.ppc.altivec.vupkhpx
 // CHECK-LE: @llvm.ppc.altivec.vupklpx
 
   res_vs  = vec_vupkhsb(vsc);
@@ -5829,6 +5833,10 @@ void test6() {
 
   res_vui = vec_unpackl(vp);
 // CHECK: @llvm.ppc.altivec.vupklpx
+// CHECK-LE: @llvm.ppc.altivec.vupkhpx
+
+  res_vui = vec_vupklpx(vp);
+// CHECK: @llvm.ppc.altivec.vupklpx
 // CHECK-LE: @llvm.ppc.altivec.vupkhpx
 
   res_vs  = vec_vupklsb(vsc);