diff --git a/clang/include/clang/Basic/arm_mve.td b/clang/include/clang/Basic/arm_mve.td
--- a/clang/include/clang/Basic/arm_mve.td
+++ b/clang/include/clang/Basic/arm_mve.td
@@ -420,6 +420,13 @@
 defm : float_int_conversions<f32, s32, fptosi, sitofp>;
 defm : float_int_conversions<f16, s16, fptosi, sitofp>;
 
+let params = [s8, u8, s16, u16] in {
+  def vmovlbq: Intrinsic<DblVector, (args Vector:$a),
+    (extend (unzip $a, 0), DblVector, (unsignedflag Scalar))>;
+  def vmovltq: Intrinsic<DblVector, (args Vector:$a),
+    (extend (unzip $a, 1), DblVector, (unsignedflag Scalar))>;
+}
+
 let params = T.Float in {
   def vrndq: Intrinsic<Vector, (args Vector:$a),
       (IRIntBase<"trunc", [Vector]> $a)>;
diff --git a/clang/include/clang/Basic/arm_mve_defs.td b/clang/include/clang/Basic/arm_mve_defs.td
--- a/clang/include/clang/Basic/arm_mve_defs.td
+++ b/clang/include/clang/Basic/arm_mve_defs.td
@@ -128,6 +128,9 @@
 def vrev: CGHelperFn<"ARMMVEVectorElementReverse"> {
   let special_params = [IRBuilderIntParam<1, "unsigned">];
 }
+def unzip: CGHelperFn<"VectorUnzip"> {
+  let special_params = [IRBuilderIntParam<1, "bool">];
+}
 
 // Helper for making boolean flags in IR
 def i1: IRBuilderBase {
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -7056,6 +7056,17 @@
   }
 }
 
+static llvm::Value *VectorUnzip(CGBuilderTy &Builder, llvm::Value *V, bool Odd) {
+  // Make a shufflevector that extracts every other element of a vector (evens
+  // or odds, as desired).
+  SmallVector<uint32_t, 16> Indices;
+  unsigned InputElements = V->getType()->getVectorNumElements();
+  for (unsigned i = 0; i < InputElements; i += 2)
+    Indices.push_back(i + Odd);
+  return Builder.CreateShuffleVector(V, llvm::UndefValue::get(V->getType()),
+                                     Indices);
+}
+
 template<unsigned HighBit, unsigned OtherBits>
 static llvm::Value *ARMMVEConstantSplat(CGBuilderTy &Builder, llvm::Type *VT) {
   // MVE-specific helper function to make a vector splat of a constant such as
diff --git a/clang/test/CodeGen/arm-mve-intrinsics/vmovl.c b/clang/test/CodeGen/arm-mve-intrinsics/vmovl.c
new file mode 100644
--- /dev/null
+++ b/clang/test/CodeGen/arm-mve-intrinsics/vmovl.c
@@ -0,0 +1,126 @@
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
+// RUN: %clang_cc1 -triple thumbv8.1m.main-arm-none-eabi -target-feature +mve -mfloat-abi hard -fallow-half-arguments-and-returns -O0 -disable-O0-optnone -S -emit-llvm -o - %s | opt -S -mem2reg | FileCheck %s
+// RUN: %clang_cc1 -triple thumbv8.1m.main-arm-none-eabi -target-feature +mve -mfloat-abi hard -fallow-half-arguments-and-returns -O0 -disable-O0-optnone -DPOLYMORPHIC -S -emit-llvm -o - %s | opt -S -mem2reg | FileCheck %s
+
+#include <arm_mve.h>
+
+// CHECK-LABEL: @test_vmovlbq_s8(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[TMP0:%.*]] = shufflevector <16 x i8> [[A:%.*]], <16 x i8> undef, <8 x i32> <i32 0, i32 2, i32 4, i32 6, i32 8, i32 10, i32 12, i32 14>
+// CHECK-NEXT:    [[TMP1:%.*]] = sext <8 x i8> [[TMP0]] to <8 x i16>
+// CHECK-NEXT:    ret <8 x i16> [[TMP1]]
+//
+int16x8_t test_vmovlbq_s8(int8x16_t a)
+{
+#ifdef POLYMORPHIC
+    return vmovlbq(a);
+#else /* POLYMORPHIC */
+    return vmovlbq_s8(a);
+#endif /* POLYMORPHIC */
+}
+
+// CHECK-LABEL: @test_vmovlbq_s16(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[TMP0:%.*]] = shufflevector <8 x i16> [[A:%.*]], <8 x i16> undef, <4 x i32> <i32 0, i32 2, i32 4, i32 6>
+// CHECK-NEXT:    [[TMP1:%.*]] = sext <4 x i16> [[TMP0]] to <4 x i32>
+// CHECK-NEXT:    ret <4 x i32> [[TMP1]]
+//
+int32x4_t test_vmovlbq_s16(int16x8_t a)
+{
+#ifdef POLYMORPHIC
+    return vmovlbq(a);
+#else /* POLYMORPHIC */
+    return vmovlbq_s16(a);
+#endif /* POLYMORPHIC */
+}
+
+// CHECK-LABEL: @test_vmovlbq_u8(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[TMP0:%.*]] = shufflevector <16 x i8> [[A:%.*]], <16 x i8> undef, <8 x i32> <i32 0, i32 2, i32 4, i32 6, i32 8, i32 10, i32 12, i32 14>
+// CHECK-NEXT:    [[TMP1:%.*]] = zext <8 x i8> [[TMP0]] to <8 x i16>
+// CHECK-NEXT:    ret <8 x i16> [[TMP1]]
+//
+uint16x8_t test_vmovlbq_u8(uint8x16_t a)
+{
+#ifdef POLYMORPHIC
+    return vmovlbq(a);
+#else /* POLYMORPHIC */
+    return vmovlbq_u8(a);
+#endif /* POLYMORPHIC */
+}
+
+// CHECK-LABEL: @test_vmovlbq_u16(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[TMP0:%.*]] = shufflevector <8 x i16> [[A:%.*]], <8 x i16> undef, <4 x i32> <i32 0, i32 2, i32 4, i32 6>
+// CHECK-NEXT:    [[TMP1:%.*]] = zext <4 x i16> [[TMP0]] to <4 x i32>
+// CHECK-NEXT:    ret <4 x i32> [[TMP1]]
+//
+uint32x4_t test_vmovlbq_u16(uint16x8_t a)
+{
+#ifdef POLYMORPHIC
+    return vmovlbq(a);
+#else /* POLYMORPHIC */
+    return vmovlbq_u16(a);
+#endif /* POLYMORPHIC */
+}
+
+// CHECK-LABEL: @test_vmovltq_s8(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[TMP0:%.*]] = shufflevector <16 x i8> [[A:%.*]], <16 x i8> undef, <8 x i32> <i32 1, i32 3, i32 5, i32 7, i32 9, i32 11, i32 13, i32 15>
+// CHECK-NEXT:    [[TMP1:%.*]] = sext <8 x i8> [[TMP0]] to <8 x i16>
+// CHECK-NEXT:    ret <8 x i16> [[TMP1]]
+//
+int16x8_t test_vmovltq_s8(int8x16_t a)
+{
+#ifdef POLYMORPHIC
+    return vmovltq(a);
+#else /* POLYMORPHIC */
+    return vmovltq_s8(a);
+#endif /* POLYMORPHIC */
+}
+
+// CHECK-LABEL: @test_vmovltq_s16(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[TMP0:%.*]] = shufflevector <8 x i16> [[A:%.*]], <8 x i16> undef, <4 x i32> <i32 1, i32 3, i32 5, i32 7>
+// CHECK-NEXT:    [[TMP1:%.*]] = sext <4 x i16> [[TMP0]] to <4 x i32>
+// CHECK-NEXT:    ret <4 x i32> [[TMP1]]
+//
+int32x4_t test_vmovltq_s16(int16x8_t a)
+{
+#ifdef POLYMORPHIC
+    return vmovltq(a);
+#else /* POLYMORPHIC */
+    return vmovltq_s16(a);
+#endif /* POLYMORPHIC */
+}
+
+// CHECK-LABEL: @test_vmovltq_u8(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[TMP0:%.*]] = shufflevector <16 x i8> [[A:%.*]], <16 x i8> undef, <8 x i32> <i32 1, i32 3, i32 5, i32 7, i32 9, i32 11, i32 13, i32 15>
+// CHECK-NEXT:    [[TMP1:%.*]] = zext <8 x i8> [[TMP0]] to <8 x i16>
+// CHECK-NEXT:    ret <8 x i16> [[TMP1]]
+//
+uint16x8_t test_vmovltq_u8(uint8x16_t a)
+{
+#ifdef POLYMORPHIC
+    return vmovltq(a);
+#else /* POLYMORPHIC */
+    return vmovltq_u8(a);
+#endif /* POLYMORPHIC */
+}
+
+// CHECK-LABEL: @test_vmovltq_u16(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[TMP0:%.*]] = shufflevector <8 x i16> [[A:%.*]], <8 x i16> undef, <4 x i32> <i32 1, i32 3, i32 5, i32 7>
+// CHECK-NEXT:    [[TMP1:%.*]] = zext <4 x i16> [[TMP0]] to <4 x i32>
+// CHECK-NEXT:    ret <4 x i32> [[TMP1]]
+//
+uint32x4_t test_vmovltq_u16(uint16x8_t a)
+{
+#ifdef POLYMORPHIC
+    return vmovltq(a);
+#else /* POLYMORPHIC */
+    return vmovltq_u16(a);
+#endif /* POLYMORPHIC */
+}
+
diff --git a/llvm/lib/Target/ARM/ARMInstrMVE.td b/llvm/lib/Target/ARM/ARMInstrMVE.td
--- a/llvm/lib/Target/ARM/ARMInstrMVE.td
+++ b/llvm/lib/Target/ARM/ARMInstrMVE.td
@@ -2394,6 +2394,16 @@
   def : Pat<(sext_inreg (v4i32 MQPR:$src), v4i8),
             (MVE_VMOVLs16bh (MVE_VMOVLs8bh MQPR:$src))>;
 
+  def : Pat<(sext_inreg (v8i16 (ARMVectorRegCast (ARMvrev16 (v16i8 MQPR:$src)))),
+                        v8i8), (MVE_VMOVLs8th MQPR:$src)>;
+  def : Pat<(sext_inreg (v4i32 (ARMVectorRegCast (ARMvrev32 (v8i16 MQPR:$src)))),
+                        v4i16), (MVE_VMOVLs16th MQPR:$src)>;
+  def : Pat<(ARMvbicImm (v8i16 (ARMVectorRegCast (ARMvrev16 (v16i8 MQPR:$src)))),
+                        (i32 0xAFF)), (MVE_VMOVLu8th MQPR:$src)>;
+  def : Pat<(and (v4i32 (ARMVectorRegCast (ARMvrev32 (v8i16 MQPR:$src)))),
+                 (v4i32 (ARMvmovImm (i32 0xCFF)))),
+                 (MVE_VMOVLu16th MQPR:$src)>;
+
   // zext_inreg 16 -> 32
   def : Pat<(and (v4i32 MQPR:$src), (v4i32 (ARMvmovImm (i32 0xCFF)))),
             (MVE_VMOVLu16bh MQPR:$src)>;
diff --git a/llvm/test/CodeGen/Thumb2/mve-intrinsics/vmovl.ll b/llvm/test/CodeGen/Thumb2/mve-intrinsics/vmovl.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/CodeGen/Thumb2/mve-intrinsics/vmovl.ll
@@ -0,0 +1,147 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=thumbv8.1m.main -mattr=+mve -verify-machineinstrs -o - %s | FileCheck --check-prefix=LE %s
+; RUN: llc -mtriple=thumbebv8.1m.main -mattr=+mve -verify-machineinstrs -o - %s | FileCheck --check-prefix=BE %s
+
+define arm_aapcs_vfpcc <8 x i16> @test_vmovlbq_s8(<16 x i8> %a) {
+; LE-LABEL: test_vmovlbq_s8:
+; LE:       @ %bb.0: @ %entry
+; LE-NEXT:    vmovlb.s8 q0, q0
+; LE-NEXT:    bx lr
+;
+; BE-LABEL: test_vmovlbq_s8:
+; BE:       @ %bb.0: @ %entry
+; BE-NEXT:    vrev64.8 q1, q0
+; BE-NEXT:    vmovlb.s8 q1, q1
+; BE-NEXT:    vrev64.16 q0, q1
+; BE-NEXT:    bx lr
+entry:
+  %0 = shufflevector <16 x i8> %a, <16 x i8> undef, <8 x i32> <i32 0, i32 2, i32 4, i32 6, i32 8, i32 10, i32 12, i32 14>
+  %1 = sext <8 x i8> %0 to <8 x i16>
+  ret <8 x i16> %1
+}
+
+define arm_aapcs_vfpcc <4 x i32> @test_vmovlbq_s16(<8 x i16> %a) {
+; LE-LABEL: test_vmovlbq_s16:
+; LE:       @ %bb.0: @ %entry
+; LE-NEXT:    vmovlb.s16 q0, q0
+; LE-NEXT:    bx lr
+;
+; BE-LABEL: test_vmovlbq_s16:
+; BE:       @ %bb.0: @ %entry
+; BE-NEXT:    vrev64.16 q1, q0
+; BE-NEXT:    vmovlb.s16 q1, q1
+; BE-NEXT:    vrev64.32 q0, q1
+; BE-NEXT:    bx lr
+entry:
+  %0 = shufflevector <8 x i16> %a, <8 x i16> undef, <4 x i32> <i32 0, i32 2, i32 4, i32 6>
+  %1 = sext <4 x i16> %0 to <4 x i32>
+  ret <4 x i32> %1
+}
+
+define arm_aapcs_vfpcc <8 x i16> @test_vmovlbq_u8(<16 x i8> %a) {
+; LE-LABEL: test_vmovlbq_u8:
+; LE:       @ %bb.0: @ %entry
+; LE-NEXT:    vmovlb.u8 q0, q0
+; LE-NEXT:    bx lr
+;
+; BE-LABEL: test_vmovlbq_u8:
+; BE:       @ %bb.0: @ %entry
+; BE-NEXT:    vrev64.8 q1, q0
+; BE-NEXT:    vmovlb.u8 q1, q1
+; BE-NEXT:    vrev64.16 q0, q1
+; BE-NEXT:    bx lr
+entry:
+  %0 = shufflevector <16 x i8> %a, <16 x i8> undef, <8 x i32> <i32 0, i32 2, i32 4, i32 6, i32 8, i32 10, i32 12, i32 14>
+  %1 = zext <8 x i8> %0 to <8 x i16>
+  ret <8 x i16> %1
+}
+
+define arm_aapcs_vfpcc <4 x i32> @test_vmovlbq_u16(<8 x i16> %a) {
+; LE-LABEL: test_vmovlbq_u16:
+; LE:       @ %bb.0: @ %entry
+; LE-NEXT:    vmovlb.u16 q0, q0
+; LE-NEXT:    bx lr
+;
+; BE-LABEL: test_vmovlbq_u16:
+; BE:       @ %bb.0: @ %entry
+; BE-NEXT:    vrev64.16 q1, q0
+; BE-NEXT:    vmovlb.u16 q1, q1
+; BE-NEXT:    vrev64.32 q0, q1
+; BE-NEXT:    bx lr
+entry:
+  %0 = shufflevector <8 x i16> %a, <8 x i16> undef, <4 x i32> <i32 0, i32 2, i32 4, i32 6>
+  %1 = zext <4 x i16> %0 to <4 x i32>
+  ret <4 x i32> %1
+}
+
+define arm_aapcs_vfpcc <8 x i16> @test_vmovltq_s8(<16 x i8> %a) {
+; LE-LABEL: test_vmovltq_s8:
+; LE:       @ %bb.0: @ %entry
+; LE-NEXT:    vmovlt.s8 q0, q0
+; LE-NEXT:    bx lr
+;
+; BE-LABEL: test_vmovltq_s8:
+; BE:       @ %bb.0: @ %entry
+; BE-NEXT:    vrev64.8 q1, q0
+; BE-NEXT:    vmovlt.s8 q1, q1
+; BE-NEXT:    vrev64.16 q0, q1
+; BE-NEXT:    bx lr
+entry:
+  %0 = shufflevector <16 x i8> %a, <16 x i8> undef, <8 x i32> <i32 1, i32 3, i32 5, i32 7, i32 9, i32 11, i32 13, i32 15>
+  %1 = sext <8 x i8> %0 to <8 x i16>
+  ret <8 x i16> %1
+}
+
+define arm_aapcs_vfpcc <4 x i32> @test_vmovltq_s16(<8 x i16> %a) {
+; LE-LABEL: test_vmovltq_s16:
+; LE:       @ %bb.0: @ %entry
+; LE-NEXT:    vmovlt.s16 q0, q0
+; LE-NEXT:    bx lr
+;
+; BE-LABEL: test_vmovltq_s16:
+; BE:       @ %bb.0: @ %entry
+; BE-NEXT:    vrev64.16 q1, q0
+; BE-NEXT:    vmovlt.s16 q1, q1
+; BE-NEXT:    vrev64.32 q0, q1
+; BE-NEXT:    bx lr
+entry:
+  %0 = shufflevector <8 x i16> %a, <8 x i16> undef, <4 x i32> <i32 1, i32 3, i32 5, i32 7>
+  %1 = sext <4 x i16> %0 to <4 x i32>
+  ret <4 x i32> %1
+}
+
+define arm_aapcs_vfpcc <8 x i16> @test_vmovltq_u8(<16 x i8> %a) {
+; LE-LABEL: test_vmovltq_u8:
+; LE:       @ %bb.0: @ %entry
+; LE-NEXT:    vmovlt.u8 q0, q0
+; LE-NEXT:    bx lr
+;
+; BE-LABEL: test_vmovltq_u8:
+; BE:       @ %bb.0: @ %entry
+; BE-NEXT:    vrev64.8 q1, q0
+; BE-NEXT:    vmovlt.u8 q1, q1
+; BE-NEXT:    vrev64.16 q0, q1
+; BE-NEXT:    bx lr
+entry:
+  %0 = shufflevector <16 x i8> %a, <16 x i8> undef, <8 x i32> <i32 1, i32 3, i32 5, i32 7, i32 9, i32 11, i32 13, i32 15>
+  %1 = zext <8 x i8> %0 to <8 x i16>
+  ret <8 x i16> %1
+}
+
+define arm_aapcs_vfpcc <4 x i32> @test_vmovltq_u16(<8 x i16> %a) {
+; LE-LABEL: test_vmovltq_u16:
+; LE:       @ %bb.0: @ %entry
+; LE-NEXT:    vmovlt.u16 q0, q0
+; LE-NEXT:    bx lr
+;
+; BE-LABEL: test_vmovltq_u16:
+; BE:       @ %bb.0: @ %entry
+; BE-NEXT:    vrev64.16 q1, q0
+; BE-NEXT:    vmovlt.u16 q1, q1
+; BE-NEXT:    vrev64.32 q0, q1
+; BE-NEXT:    bx lr
+entry:
+  %0 = shufflevector <8 x i16> %a, <8 x i16> undef, <4 x i32> <i32 1, i32 3, i32 5, i32 7>
+  %1 = zext <4 x i16> %0 to <4 x i32>
+  ret <4 x i32> %1
+}
diff --git a/llvm/test/CodeGen/Thumb2/mve-shuffleext.ll b/llvm/test/CodeGen/Thumb2/mve-shuffleext.ll
--- a/llvm/test/CodeGen/Thumb2/mve-shuffleext.ll
+++ b/llvm/test/CodeGen/Thumb2/mve-shuffleext.ll
@@ -15,8 +15,7 @@
 define arm_aapcs_vfpcc <4 x i32> @sext_1357(<8 x i16> %src) {
 ; CHECK-LABEL: sext_1357:
 ; CHECK:       @ %bb.0: @ %entry
-; CHECK-NEXT:    vrev32.16 q0, q0
-; CHECK-NEXT:    vmovlb.s16 q0, q0
+; CHECK-NEXT:    vmovlt.s16 q0, q0
 ; CHECK-NEXT:    bx lr
 entry:
   %strided.vec = shufflevector <8 x i16> %src, <8 x i16> undef, <4 x i32> <i32 1, i32 3, i32 5, i32 7>
@@ -38,8 +37,7 @@
 define arm_aapcs_vfpcc <4 x i32> @zext_1357(<8 x i16> %src) {
 ; CHECK-LABEL: zext_1357:
 ; CHECK:       @ %bb.0: @ %entry
-; CHECK-NEXT:    vrev32.16 q0, q0
-; CHECK-NEXT:    vmovlb.u16 q0, q0
+; CHECK-NEXT:    vmovlt.u16 q0, q0
 ; CHECK-NEXT:    bx lr
 entry:
   %strided.vec = shufflevector <8 x i16> %src, <8 x i16> undef, <4 x i32> <i32 1, i32 3, i32 5, i32 7>
@@ -61,8 +59,7 @@
 define arm_aapcs_vfpcc <8 x i16> @sext_13579111315(<16 x i8> %src) {
 ; CHECK-LABEL: sext_13579111315:
 ; CHECK:       @ %bb.0: @ %entry
-; CHECK-NEXT:    vrev16.8 q0, q0
-; CHECK-NEXT:    vmovlb.s8 q0, q0
+; CHECK-NEXT:    vmovlt.s8 q0, q0
 ; CHECK-NEXT:    bx lr
 entry:
   %strided.vec = shufflevector <16 x i8> %src, <16 x i8> undef, <8 x i32> <i32 1, i32 3, i32 5, i32 7, i32 9, i32 11, i32 13, i32 15>
@@ -84,8 +81,7 @@
 define arm_aapcs_vfpcc <8 x i16> @zext_13579111315(<16 x i8> %src) {
 ; CHECK-LABEL: zext_13579111315:
 ; CHECK:       @ %bb.0: @ %entry
-; CHECK-NEXT:    vrev16.8 q0, q0
-; CHECK-NEXT:    vmovlb.u8 q0, q0
+; CHECK-NEXT:    vmovlt.u8 q0, q0
 ; CHECK-NEXT:    bx lr
 entry:
   %strided.vec = shufflevector <16 x i8> %src, <16 x i8> undef, <8 x i32> <i32 1, i32 3, i32 5, i32 7, i32 9, i32 11, i32 13, i32 15>