diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
--- a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -1324,6 +1324,7 @@
       setOperationAction(ISD::MGATHER, VT, Custom);
       setOperationAction(ISD::MSCATTER, VT, Custom);
       setOperationAction(ISD::MLOAD, VT, Custom);
+      setOperationAction(ISD::INSERT_SUBVECTOR, VT, Custom);
     }
 
     setOperationAction(ISD::SPLAT_VECTOR, MVT::nxv8bf16, Custom);
diff --git a/llvm/test/CodeGen/AArch64/sve-insert-vector.ll b/llvm/test/CodeGen/AArch64/sve-insert-vector.ll
--- a/llvm/test/CodeGen/AArch64/sve-insert-vector.ll
+++ b/llvm/test/CodeGen/AArch64/sve-insert-vector.ll
@@ -1,5 +1,5 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
-; RUN: llc -mtriple=aarch64-linux-gnu -mattr=+sve < %s | FileCheck %s --check-prefixes=CHECK
+; RUN: llc -mtriple=aarch64-linux-gnu -mattr=+sve -mattr=+bf16 < %s | FileCheck %s --check-prefixes=CHECK
 
 define <vscale x 2 x i64> @insert_v2i64_nxv2i64(<vscale x 2 x i64> %vec, <2 x i64> %subvec) nounwind {
 ; CHECK-LABEL: insert_v2i64_nxv2i64:
@@ -466,8 +466,73 @@
   ret <vscale x 12 x i32> %v2
 }
 
+define <vscale x 2 x bfloat> @insert_nxv2bf16_nxv2bf16(<vscale x 2 x bfloat> %sv0, <vscale x 2 x bfloat> %sv1) nounwind {
+; CHECK-LABEL: insert_nxv2bf16_nxv2bf16:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    z0.d, z1.d
+; CHECK-NEXT:    ret
+  %v0 = call <vscale x 2 x bfloat> @llvm.experimental.vector.insert.nxv2bf16.nxv2bf16(<vscale x 2 x bfloat> %sv0, <vscale x 2 x bfloat> %sv1, i64 0)
+  ret <vscale x 2 x bfloat> %v0
+}
+
+define <vscale x 4 x bfloat> @insert_nxv4bf16_nxv4bf16(<vscale x 4 x bfloat> %sv0, <vscale x 4 x bfloat> %sv1) nounwind {
+; CHECK-LABEL: insert_nxv4bf16_nxv4bf16:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    z0.d, z1.d
+; CHECK-NEXT:    ret
+  %v0 = call <vscale x 4 x bfloat> @llvm.experimental.vector.insert.nxv4bf16.nxv4bf16(<vscale x 4 x bfloat> %sv0, <vscale x 4 x bfloat> %sv1, i64 0)
+  ret <vscale x 4 x bfloat> %v0
+}
+
+define <vscale x 4 x bfloat> @insert_nxv4bf16_v4bf16(<vscale x 4 x bfloat> %sv0, <4 x bfloat> %v1) nounwind {
+; CHECK-LABEL: insert_nxv4bf16_v4bf16:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    str     x29, [sp, #-16]!                // 8-byte Folded Spill
+; CHECK-NEXT:    addvl   sp, sp, #-1
+; CHECK-NEXT:    ptrue   p0.s
+; CHECK-NEXT:    st1h    { z0.s }, p0, [sp, #1, mul vl]
+; CHECK-NEXT:    addpl   x8, sp, #4
+; CHECK-NEXT:    str     d1, [x8]
+; CHECK-NEXT:    ld1h    { z0.s }, p0/z, [sp, #1, mul vl]
+; CHECK-NEXT:    addvl   sp, sp, #1
+; CHECK-NEXT:    ldr     x29, [sp], #16                  // 8-byte Folded Reload
+; CHECK-NEXT:    ret
+  %v0 = call <vscale x 4 x bfloat> @llvm.experimental.vector.insert.nxv4bf16.v4bf16(<vscale x 4 x bfloat> %sv0, <4 x bfloat> %v1, i64 0)
+  ret <vscale x 4 x bfloat> %v0
+}
+
+define <vscale x 8 x bfloat> @insert_nxv8bf16_nxv8bf16(<vscale x 8 x bfloat> %sv0, <vscale x 8 x bfloat> %sv1) nounwind {
+; CHECK-LABEL: insert_nxv8bf16_nxv8bf16:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    z0.d, z1.d
+; CHECK-NEXT:    ret
+  %v0 = call <vscale x 8 x bfloat> @llvm.experimental.vector.insert.nxv8bf16.nxv8bf16(<vscale x 8 x bfloat> %sv0, <vscale x 8 x bfloat> %sv1, i64 0)
+  ret <vscale x 8 x bfloat> %v0
+}
+
+define <vscale x 8 x bfloat> @insert_nxv8bf16_v8bf16(<vscale x 8 x bfloat> %sv0, <8 x bfloat> %v1) nounwind {
+; CHECK-LABEL: insert_nxv8bf16_v8bf16:
+; CHECK:       // %bb.0:
+; CHECK-NEXT:    str     x29, [sp, #-16]! // 8-byte Folded Spill
+; CHECK-NEXT:    addvl   sp, sp, #-1
+; CHECK-NEXT:    ptrue   p0.h
+; CHECK-NEXT:    st1h    { z0.h }, p0, [sp]
+; CHECK-NEXT:    str     q1, [sp]
+; CHECK-NEXT:    ld1h    { z0.h }, p0/z, [sp]
+; CHECK-NEXT:    addvl   sp, sp, #1
+; CHECK-NEXT:    ldr     x29, [sp], #16 // 8-byte Folded Reload
+; CHECK-NEXT:    ret
+  %v0 = call <vscale x 8 x bfloat> @llvm.experimental.vector.insert.nxv8bf16.v8bf16(<vscale x 8 x bfloat> %sv0, <8 x bfloat> %v1, i64 0)
+  ret <vscale x 8 x bfloat> %v0
+}
+
 declare <vscale x 3 x i32> @llvm.experimental.vector.insert.nxv3i32.nxv2i32(<vscale x 3 x i32>, <vscale x 2 x i32>, i64)
 declare <vscale x 3 x float> @llvm.experimental.vector.insert.nxv3f32.nxv2f32(<vscale x 3 x float>, <vscale x 2 x float>, i64)
 declare <vscale x 6 x i32> @llvm.experimental.vector.insert.nxv6i32.nxv2i32(<vscale x 6 x i32>, <vscale x 2 x i32>, i64)
 declare <vscale x 6 x i32> @llvm.experimental.vector.insert.nxv6i32.nxv3i32(<vscale x 6 x i32>, <vscale x 3 x i32>, i64)
 declare <vscale x 12 x i32> @llvm.experimental.vector.insert.nxv4i32.nxv12i32(<vscale x 12 x i32>, <vscale x 4 x i32>, i64)
+declare <vscale x 8 x bfloat> @llvm.experimental.vector.insert.nxv8bf16.nxv8bf16(<vscale x 8 x bfloat>, <vscale x 8 x bfloat>, i64)
+declare <vscale x 8 x bfloat> @llvm.experimental.vector.insert.nxv8bf16.v8bf16(<vscale x 8 x bfloat>, <8 x bfloat>, i64)
+declare <vscale x 4 x bfloat> @llvm.experimental.vector.insert.nxv4bf16.nxv4bf16(<vscale x 4 x bfloat>, <vscale x 4 x bfloat>, i64)
+declare <vscale x 4 x bfloat> @llvm.experimental.vector.insert.nxv4bf16.v4bf16(<vscale x 4 x bfloat>, <4 x bfloat>, i64)
+declare <vscale x 2 x bfloat> @llvm.experimental.vector.insert.nxv2bf16.nxv2bf16(<vscale x 2 x bfloat>, <vscale x 2 x bfloat>, i64)