-declare void @llvm.arm.neon.vst2.v8i8(i8*, <8 x i8>, <8 x i8>) nounwind
-declare void @llvm.arm.neon.vst2.v4i16(i8*, <4 x i16>, <4 x i16>) nounwind
-declare void @llvm.arm.neon.vst2.v2i32(i8*, <2 x i32>, <2 x i32>) nounwind
-declare void @llvm.arm.neon.vst2.v2f32(i8*, <2 x float>, <2 x float>) nounwind
-declare void @llvm.arm.neon.vst2.v1i64(i8*, <1 x i64>, <1 x i64>) nounwind
+define i8* @vst2update(i8* %out, <4 x i16>* %B) nounwind {
+;CHECK-LABEL: vst2update:
+;CHECK: vst2.16 {d16, d17}, [r0]!
+ %tmp1 = load <4 x i16>, <4 x i16>* %B
+ tail call void @llvm.arm.neon.vst2.v4i16(i8* %out, <4 x i16> %tmp1, <4 x i16> %tmp1, i32 2)
+ %t5 = getelementptr inbounds i8, i8* %out, i32 16
+ ret i8* %t5
+}
+
+define i8* @vst2update2(i8 * %out, <4 x float> * %this) nounwind optsize ssp align 2 {
+;CHECK-LABEL: vst2update2:
+;CHECK: vst2.32 {d16, d17, d18, d19}, [r0]!
+ %tmp1 = load <4 x float>, <4 x float>* %this
+ call void @llvm.arm.neon.vst2.v4f32(i8* %out, <4 x float> %tmp1, <4 x float> %tmp1, i32 4) nounwind
+ %tmp2 = getelementptr inbounds i8, i8* %out, i32 32
+ ret i8* %tmp2
+}
+
+declare void @llvm.arm.neon.vst2.v8i8(i8*, <8 x i8>, <8 x i8>, i32) nounwind
+declare void @llvm.arm.neon.vst2.v4i16(i8*, <4 x i16>, <4 x i16>, i32) nounwind
+declare void @llvm.arm.neon.vst2.v2i32(i8*, <2 x i32>, <2 x i32>, i32) nounwind
+declare void @llvm.arm.neon.vst2.v2f32(i8*, <2 x float>, <2 x float>, i32) nounwind
+declare void @llvm.arm.neon.vst2.v1i64(i8*, <1 x i64>, <1 x i64>, i32) nounwind