+define <16 x i16> @vuzpQi16_undef_QQres(<8 x i16>* %A, <8 x i16>* %B) nounwind {
+; CHECK-LABEL: vuzpQi16_undef_QQres:
+; CHECK: @ BB#0:
+; CHECK-NEXT: vld1.64 {d16, d17}, [r2]
+; CHECK-NEXT: vld1.64 {d18, d19}, [r1]
+; CHECK-NEXT: vuzp.16 q9, q8
+; CHECK-NEXT: vst1.16 {d18, d19}, [r0:128]!
+; CHECK-NEXT: vst1.64 {d16, d17}, [r0:128]
+; CHECK-NEXT: mov pc, lr
+ %tmp1 = load <8 x i16>, <8 x i16>* %A
+ %tmp2 = load <8 x i16>, <8 x i16>* %B
+ %tmp3 = shufflevector <8 x i16> %tmp1, <8 x i16> %tmp2, <16 x i32> <i32 0, i32 undef, i32 4, i32 undef, i32 8, i32 10, i32 12, i32 14, i32 1, i32 3, i32 5, i32 undef, i32 undef, i32 11, i32 13, i32 15>
+ ret <16 x i16> %tmp3
+}
+
+define <8 x i16> @vuzp_lower_shufflemask_undef(<4 x i16>* %A, <4 x i16>* %B) {
+entry:
+ ; CHECK-LABEL: vuzp_lower_shufflemask_undef
+ ; CHECK: vuzp
+ %tmp1 = load <4 x i16>, <4 x i16>* %A
+ %tmp2 = load <4 x i16>, <4 x i16>* %B
+ %0 = shufflevector <4 x i16> %tmp1, <4 x i16> %tmp2, <8 x i32> <i32 undef, i32 undef, i32 undef, i32 undef, i32 1, i32 3, i32 5, i32 7>
+ ret <8 x i16> %0
+}
+
+define <4 x i32> @vuzp_lower_shufflemask_zeroed(<2 x i32>* %A, <2 x i32>* %B) {
+entry:
+ ; CHECK-LABEL: vuzp_lower_shufflemask_zeroed
+ ; CHECK-NOT: vtrn
+ ; CHECK: vuzp
+ %tmp1 = load <2 x i32>, <2 x i32>* %A
+ %tmp2 = load <2 x i32>, <2 x i32>* %B
+ %0 = shufflevector <2 x i32> %tmp1, <2 x i32> %tmp2, <4 x i32> <i32 0, i32 0, i32 1, i32 3>
+ ret <4 x i32> %0
+}
+
+define <8 x i8> @vuzp_trunc(<8 x i8> %in0, <8 x i8> %in1, <8 x i32> %cmp0, <8 x i32> %cmp1) {
+; In order to create the select we need to truncate the vcgt result from a vector of i32 to a vector of i8.
+; This results in a build_vector with mismatched types. We will generate two vmovn.i32 instructions to
+; truncate from i32 to i16 and one vuzp to perform the final truncation for i8.
+; CHECK-LABEL: vuzp_trunc
+; CHECK: vmovn.i32
+; CHECK: vmovn.i32
+; CHECK: vuzp
+; CHECK: vbsl
+ %c = icmp ult <8 x i32> %cmp0, %cmp1
+ %res = select <8 x i1> %c, <8 x i8> %in0, <8 x i8> %in1
+ ret <8 x i8> %res
+}
+
+; Shuffle the result from the compare with a <4 x i8>.
+; We need to extend the loaded <4 x i8> to <4 x i16>. Otherwise we wouldn't be able
+; to perform the vuzp and get the vbsl mask.
+define <8 x i8> @vuzp_trunc_and_shuffle(<8 x i8> %tr0, <8 x i8> %tr1,
+ <4 x i32> %cmp0, <4 x i32> %cmp1, <4 x i8> *%cmp2_ptr) {
+; CHECK-LABEL: vuzp_trunc_and_shuffle
+; CHECK: vmovl
+; CHECK: vuzp
+; CHECK: vbsl
+ %cmp2_load = load <4 x i8>, <4 x i8> * %cmp2_ptr, align 4
+ %cmp2 = trunc <4 x i8> %cmp2_load to <4 x i1>
+ %c0 = icmp ult <4 x i32> %cmp0, %cmp1
+ %c = shufflevector <4 x i1> %c0, <4 x i1> %cmp2, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
+ %rv = select <8 x i1> %c, <8 x i8> %tr0, <8 x i8> %tr1
+ ret <8 x i8> %rv
+}
+
+; Use an undef value for the <4 x i8> that is being shuffled with the compare result.
+; This produces a build_vector with some of the operands undefs.
+define <8 x i8> @vuzp_trunc_and_shuffle_undef_right(<8 x i8> %tr0, <8 x i8> %tr1,
+ <4 x i32> %cmp0, <4 x i32> %cmp1, <4 x i8> *%cmp2_ptr) {
+; CHECK-LABEL: vuzp_trunc_and_shuffle_undef_right
+; CHECK: vuzp
+; CHECK: vbsl
+ %cmp2_load = load <4 x i8>, <4 x i8> * %cmp2_ptr, align 4
+ %cmp2 = trunc <4 x i8> %cmp2_load to <4 x i1>
+ %c0 = icmp ult <4 x i32> %cmp0, %cmp1
+ %c = shufflevector <4 x i1> %c0, <4 x i1> undef, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
+ %rv = select <8 x i1> %c, <8 x i8> %tr0, <8 x i8> %tr1
+ ret <8 x i8> %rv
+}
+
+define <8 x i8> @vuzp_trunc_and_shuffle_undef_left(<8 x i8> %tr0, <8 x i8> %tr1,
+ <4 x i32> %cmp0, <4 x i32> %cmp1, <4 x i8> *%cmp2_ptr) {
+; CHECK-LABEL: vuzp_trunc_and_shuffle_undef_left
+; CHECK: vuzp
+; CHECK: vbsl
+ %cmp2_load = load <4 x i8>, <4 x i8> * %cmp2_ptr, align 4
+ %cmp2 = trunc <4 x i8> %cmp2_load to <4 x i1>
+ %c0 = icmp ult <4 x i32> %cmp0, %cmp1
+ %c = shufflevector <4 x i1> undef, <4 x i1> %c0, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
+ %rv = select <8 x i1> %c, <8 x i8> %tr0, <8 x i8> %tr1
+ ret <8 x i8> %rv
+}
+
+; We're using large data types here, and we have to fill with undef values until we
+; get some vector size that we can represent.
+define <10 x i8> @vuzp_wide_type(<10 x i8> %tr0, <10 x i8> %tr1,
+ <5 x i32> %cmp0, <5 x i32> %cmp1, <5 x i8> *%cmp2_ptr) {
+; CHECK-LABEL: vuzp_wide_type
+; CHECK: vbsl
+ %cmp2_load = load <5 x i8>, <5 x i8> * %cmp2_ptr, align 4
+ %cmp2 = trunc <5 x i8> %cmp2_load to <5 x i1>
+ %c0 = icmp ult <5 x i32> %cmp0, %cmp1
+ %c = shufflevector <5 x i1> %c0, <5 x i1> %cmp2, <10 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9>
+ %rv = select <10 x i1> %c, <10 x i8> %tr0, <10 x i8> %tr1
+ ret <10 x i8> %rv
+}