diff --git a/llvm/test/CodeGen/RISCV/rvv/fixed-vector-interleave-store.ll b/llvm/test/CodeGen/RISCV/rvv/fixed-vector-interleave-store.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/rvv/fixed-vector-interleave-store.ll
@@ -0,0 +1,207 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=riscv32 -mattr=+v,+zfh,+experimental-zvfh | FileCheck %s -check-prefixes=CHECK,RV32
+; RUN: llc < %s -mtriple=riscv64 -mattr=+v,+zfh,+experimental-zvfh | FileCheck %s -check-prefixes=CHECK,RV64
+
+; Integers
+
+define void @vector_interleave_store_v32i1_v16i1(<16 x i1> %a, <16 x i1> %b, ptr %p) {
+; CHECK-LABEL: vector_interleave_store_v32i1_v16i1:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli zero, 4, e8, mf4, ta, ma
+; CHECK-NEXT:    vslideup.vi v0, v8, 2
+; CHECK-NEXT:    li a1, 32
+; CHECK-NEXT:    vsetvli zero, a1, e8, m2, ta, ma
+; CHECK-NEXT:    vmv.v.i v8, 0
+; CHECK-NEXT:    vmerge.vim v8, v8, 1, v0
+; CHECK-NEXT:    vsetivli zero, 16, e8, m2, ta, ma
+; CHECK-NEXT:    vslidedown.vi v10, v8, 16
+; CHECK-NEXT:    vsetivli zero, 16, e8, m1, ta, ma
+; CHECK-NEXT:    vwaddu.vv v12, v8, v10
+; CHECK-NEXT:    li a2, -1
+; CHECK-NEXT:    vwmaccu.vx v12, a2, v10
+; CHECK-NEXT:    vsetvli zero, a1, e8, m2, ta, ma
+; CHECK-NEXT:    vmsne.vi v8, v12, 0
+; CHECK-NEXT:    vsm.v v8, (a0)
+; CHECK-NEXT:    ret
+  %res = call <32 x i1> @llvm.experimental.vector.interleave2.v32i1(<16 x i1> %a, <16 x i1> %b)
+  store <32 x i1> %res, ptr %p
+  ret void
+}
+
+define void @vector_interleave_store_v16i16_v8i16(<8 x i16> %a, <8 x i16> %b, ptr %p) {
+; CHECK-LABEL: vector_interleave_store_v16i16_v8i16:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli zero, 8, e16, m1, ta, ma
+; CHECK-NEXT:    vwaddu.vv v10, v8, v9
+; CHECK-NEXT:    li a1, -1
+; CHECK-NEXT:    vwmaccu.vx v10, a1, v9
+; CHECK-NEXT:    vsetivli zero, 16, e16, m2, ta, ma
+; CHECK-NEXT:    vse16.v v10, (a0)
+; CHECK-NEXT:    ret
+  %res = call <16 x i16> @llvm.experimental.vector.interleave2.v16i16(<8 x i16> %a, <8 x i16> %b)
+  store <16 x i16> %res, ptr %p
+  ret void
+}
+
+define void @vector_interleave_store_v8i32_v4i32(<4 x i32> %a, <4 x i32> %b, ptr %p) {
+; CHECK-LABEL: vector_interleave_store_v8i32_v4i32:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli zero, 4, e32, m1, ta, ma
+; CHECK-NEXT:    vwaddu.vv v10, v8, v9
+; CHECK-NEXT:    li a1, -1
+; CHECK-NEXT:    vwmaccu.vx v10, a1, v9
+; CHECK-NEXT:    vsetivli zero, 8, e32, m2, ta, ma
+; CHECK-NEXT:    vse32.v v10, (a0)
+; CHECK-NEXT:    ret
+  %res = call <8 x i32> @llvm.experimental.vector.interleave2.v8i32(<4 x i32> %a, <4 x i32> %b)
+  store <8 x i32> %res, ptr %p
+  ret void
+}
+
+define void @vector_interleave_store_v4i64_v2i64(<2 x i64> %a, <2 x i64> %b, ptr %p) {
+; RV32-LABEL: vector_interleave_store_v4i64_v2i64:
+; RV32:       # %bb.0:
+; RV32-NEXT:    vmv1r.v v10, v9
+; RV32-NEXT:    vsetivli zero, 4, e64, m2, ta, ma
+; RV32-NEXT:    lui a1, %hi(.LCPI3_0)
+; RV32-NEXT:    addi a1, a1, %lo(.LCPI3_0)
+; RV32-NEXT:    vle16.v v12, (a1)
+; RV32-NEXT:    vslideup.vi v8, v10, 2
+; RV32-NEXT:    vrgatherei16.vv v10, v8, v12
+; RV32-NEXT:    vse64.v v10, (a0)
+; RV32-NEXT:    ret
+;
+; RV64-LABEL: vector_interleave_store_v4i64_v2i64:
+; RV64:       # %bb.0:
+; RV64-NEXT:    vmv1r.v v10, v9
+; RV64-NEXT:    vsetivli zero, 4, e64, m2, ta, ma
+; RV64-NEXT:    lui a1, %hi(.LCPI3_0)
+; RV64-NEXT:    addi a1, a1, %lo(.LCPI3_0)
+; RV64-NEXT:    vle64.v v12, (a1)
+; RV64-NEXT:    vslideup.vi v8, v10, 2
+; RV64-NEXT:    vrgather.vv v10, v8, v12
+; RV64-NEXT:    vse64.v v10, (a0)
+; RV64-NEXT:    ret
+  %res = call <4 x i64> @llvm.experimental.vector.interleave2.v4i64(<2 x i64> %a, <2 x i64> %b)
+  store <4 x i64> %res, ptr %p
+  ret void
+}
+
+declare <32 x i1> @llvm.experimental.vector.interleave2.v32i1(<16 x i1>, <16 x i1>)
+declare <16 x i16> @llvm.experimental.vector.interleave2.v16i16(<8 x i16>, <8 x i16>)
+declare <8 x i32> @llvm.experimental.vector.interleave2.v8i32(<4 x i32>, <4 x i32>)
+declare <4 x i64> @llvm.experimental.vector.interleave2.v4i64(<2 x i64>, <2 x i64>)
+
+; Floats
+
+define void @vector_interleave_store_v4f16_v2f16(<2 x half> %a, <2 x half> %b, ptr %p) {
+; CHECK-LABEL: vector_interleave_store_v4f16_v2f16:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli zero, 2, e16, mf4, ta, ma
+; CHECK-NEXT:    vwaddu.vv v10, v8, v9
+; CHECK-NEXT:    li a1, -1
+; CHECK-NEXT:    vwmaccu.vx v10, a1, v9
+; CHECK-NEXT:    vsetivli zero, 4, e16, mf2, ta, ma
+; CHECK-NEXT:    vse16.v v10, (a0)
+; CHECK-NEXT:    ret
+  %res = call <4 x half> @llvm.experimental.vector.interleave2.v4f16(<2 x half> %a, <2 x half> %b)
+  store <4 x half> %res, ptr %p
+  ret void
+}
+
+define void @vector_interleave_store_v8f16_v4f16(<4 x half> %a, <4 x half> %b, ptr %p) {
+; CHECK-LABEL: vector_interleave_store_v8f16_v4f16:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli zero, 4, e16, mf2, ta, ma
+; CHECK-NEXT:    vwaddu.vv v10, v8, v9
+; CHECK-NEXT:    li a1, -1
+; CHECK-NEXT:    vwmaccu.vx v10, a1, v9
+; CHECK-NEXT:    vsetivli zero, 8, e16, m1, ta, ma
+; CHECK-NEXT:    vse16.v v10, (a0)
+; CHECK-NEXT:    ret
+  %res = call <8 x half> @llvm.experimental.vector.interleave2.v8f16(<4 x half> %a, <4 x half> %b)
+  store <8 x half> %res, ptr %p
+  ret void
+}
+
+define void @vector_interleave_store_v4f32_v2f32(<2 x float> %a, <2 x float> %b, ptr %p) {
+; CHECK-LABEL: vector_interleave_store_v4f32_v2f32:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli zero, 2, e32, mf2, ta, ma
+; CHECK-NEXT:    vwaddu.vv v10, v8, v9
+; CHECK-NEXT:    li a1, -1
+; CHECK-NEXT:    vwmaccu.vx v10, a1, v9
+; CHECK-NEXT:    vsetivli zero, 4, e32, m1, ta, ma
+; CHECK-NEXT:    vse32.v v10, (a0)
+; CHECK-NEXT:    ret
+  %res = call <4 x float> @llvm.experimental.vector.interleave2.v4f32(<2 x float> %a, <2 x float> %b)
+  store <4 x float> %res, ptr %p
+  ret void
+}
+
+define void @vector_interleave_store_v16f16_v8f16(<8 x half> %a, <8 x half> %b, ptr %p) {
+; CHECK-LABEL: vector_interleave_store_v16f16_v8f16:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli zero, 8, e16, m1, ta, ma
+; CHECK-NEXT:    vwaddu.vv v10, v8, v9
+; CHECK-NEXT:    li a1, -1
+; CHECK-NEXT:    vwmaccu.vx v10, a1, v9
+; CHECK-NEXT:    vsetivli zero, 16, e16, m2, ta, ma
+; CHECK-NEXT:    vse16.v v10, (a0)
+; CHECK-NEXT:    ret
+  %res = call <16 x half> @llvm.experimental.vector.interleave2.v16f16(<8 x half> %a, <8 x half> %b)
+  store <16 x half> %res, ptr %p
+  ret void
+}
+
+define void @vector_interleave_store_v8f32_v4f32(<4 x float> %a, <4 x float> %b, ptr %p) {
+; CHECK-LABEL: vector_interleave_store_v8f32_v4f32:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli zero, 4, e32, m1, ta, ma
+; CHECK-NEXT:    vwaddu.vv v10, v8, v9
+; CHECK-NEXT:    li a1, -1
+; CHECK-NEXT:    vwmaccu.vx v10, a1, v9
+; CHECK-NEXT:    vsetivli zero, 8, e32, m2, ta, ma
+; CHECK-NEXT:    vse32.v v10, (a0)
+; CHECK-NEXT:    ret
+  %res = call <8 x float> @llvm.experimental.vector.interleave2.v8f32(<4 x float> %a, <4 x float> %b)
+  store <8 x float> %res, ptr %p
+  ret void
+}
+
+define void @vector_interleave_store_v4f64_v2f64(<2 x double> %a, <2 x double> %b, ptr %p) {
+; RV32-LABEL: vector_interleave_store_v4f64_v2f64:
+; RV32:       # %bb.0:
+; RV32-NEXT:    vmv1r.v v10, v9
+; RV32-NEXT:    vsetivli zero, 4, e64, m2, ta, ma
+; RV32-NEXT:    lui a1, %hi(.LCPI9_0)
+; RV32-NEXT:    addi a1, a1, %lo(.LCPI9_0)
+; RV32-NEXT:    vle16.v v12, (a1)
+; RV32-NEXT:    vslideup.vi v8, v10, 2
+; RV32-NEXT:    vrgatherei16.vv v10, v8, v12
+; RV32-NEXT:    vse64.v v10, (a0)
+; RV32-NEXT:    ret
+;
+; RV64-LABEL: vector_interleave_store_v4f64_v2f64:
+; RV64:       # %bb.0:
+; RV64-NEXT:    vmv1r.v v10, v9
+; RV64-NEXT:    vsetivli zero, 4, e64, m2, ta, ma
+; RV64-NEXT:    lui a1, %hi(.LCPI9_0)
+; RV64-NEXT:    addi a1, a1, %lo(.LCPI9_0)
+; RV64-NEXT:    vle64.v v12, (a1)
+; RV64-NEXT:    vslideup.vi v8, v10, 2
+; RV64-NEXT:    vrgather.vv v10, v8, v12
+; RV64-NEXT:    vse64.v v10, (a0)
+; RV64-NEXT:    ret
+  %res = call <4 x double> @llvm.experimental.vector.interleave2.v4f64(<2 x double> %a, <2 x double> %b)
+  store <4 x double> %res, ptr %p
+  ret void
+}
+
+
+declare <4 x half> @llvm.experimental.vector.interleave2.v4f16(<2 x half>, <2 x half>)
+declare <8 x half> @llvm.experimental.vector.interleave2.v8f16(<4 x half>, <4 x half>)
+declare <4 x float> @llvm.experimental.vector.interleave2.v4f32(<2 x float>, <2 x float>)
+declare <16 x half> @llvm.experimental.vector.interleave2.v16f16(<8 x half>, <8 x half>)
+declare <8 x float> @llvm.experimental.vector.interleave2.v8f32(<4 x float>, <4 x float>)
+declare <4 x double> @llvm.experimental.vector.interleave2.v4f64(<2 x double>, <2 x double>)
diff --git a/llvm/test/CodeGen/RISCV/rvv/vector-interleave-store.ll b/llvm/test/CodeGen/RISCV/rvv/vector-interleave-store.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/rvv/vector-interleave-store.ll
@@ -0,0 +1,271 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=riscv32 -mattr=+v,+zfh,+experimental-zvfh | FileCheck %s
+; RUN: llc < %s -mtriple=riscv64 -mattr=+v,+zfh,+experimental-zvfh | FileCheck %s
+
+; Integers
+
+define void @vector_interleave_store_nxv32i1_nxv16i1(<vscale x 16 x i1> %a, <vscale x 16 x i1> %b, ptr %p) {
+; CHECK-LABEL: vector_interleave_store_nxv32i1_nxv16i1:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vmv1r.v v9, v0
+; CHECK-NEXT:    vsetvli a1, zero, e8, m2, ta, ma
+; CHECK-NEXT:    vmv.v.i v10, 0
+; CHECK-NEXT:    vmv1r.v v0, v8
+; CHECK-NEXT:    vmerge.vim v12, v10, 1, v0
+; CHECK-NEXT:    vmv1r.v v0, v9
+; CHECK-NEXT:    vmerge.vim v8, v10, 1, v0
+; CHECK-NEXT:    vwaddu.vv v16, v8, v12
+; CHECK-NEXT:    li a1, -1
+; CHECK-NEXT:    vwmaccu.vx v16, a1, v12
+; CHECK-NEXT:    vmsne.vi v8, v18, 0
+; CHECK-NEXT:    vmsne.vi v9, v16, 0
+; CHECK-NEXT:    csrr a1, vlenb
+; CHECK-NEXT:    srli a1, a1, 2
+; CHECK-NEXT:    add a2, a1, a1
+; CHECK-NEXT:    vsetvli zero, a2, e8, mf2, tu, ma
+; CHECK-NEXT:    vslideup.vx v9, v8, a1
+; CHECK-NEXT:    vsetvli a1, zero, e8, m4, ta, ma
+; CHECK-NEXT:    vsm.v v9, (a0)
+; CHECK-NEXT:    ret
+  %res = call <vscale x 32 x i1> @llvm.experimental.vector.interleave2.nxv32i1(<vscale x 16 x i1> %a, <vscale x 16 x i1> %b)
+  store <vscale x 32 x i1> %res, ptr %p
+  ret void
+}
+
+define void @vector_interleave_store_nxv16i16_nxv8i16(<vscale x 8 x i16> %a, <vscale x 8 x i16> %b, ptr %p) {
+; CHECK-LABEL: vector_interleave_store_nxv16i16_nxv8i16:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a1, zero, e16, m2, ta, ma
+; CHECK-NEXT:    vwaddu.vv v12, v8, v10
+; CHECK-NEXT:    li a1, -1
+; CHECK-NEXT:    vwmaccu.vx v12, a1, v10
+; CHECK-NEXT:    vs4r.v v12, (a0)
+; CHECK-NEXT:    ret
+  %res = call <vscale x 16 x i16> @llvm.experimental.vector.interleave2.nxv16i16(<vscale x 8 x i16> %a, <vscale x 8 x i16> %b)
+  store <vscale x 16 x i16> %res, ptr %p
+  ret void
+}
+
+define void @vector_interleave_store_nxv8i32_nxv4i32(<vscale x 4 x i32> %a, <vscale x 4 x i32> %b, ptr %p) {
+; CHECK-LABEL: vector_interleave_store_nxv8i32_nxv4i32:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a1, zero, e32, m2, ta, ma
+; CHECK-NEXT:    vwaddu.vv v12, v8, v10
+; CHECK-NEXT:    li a1, -1
+; CHECK-NEXT:    vwmaccu.vx v12, a1, v10
+; CHECK-NEXT:    vs4r.v v12, (a0)
+; CHECK-NEXT:    ret
+  %res = call <vscale x 8 x i32> @llvm.experimental.vector.interleave2.nxv8i32(<vscale x 4 x i32> %a, <vscale x 4 x i32> %b)
+  store <vscale x 8 x i32> %res, ptr %p
+  ret void
+}
+
+define void @vector_interleave_store_nxv4i64_nxv2i64(<vscale x 2 x i64> %a, <vscale x 2 x i64> %b, ptr %p) {
+; CHECK-LABEL: vector_interleave_store_nxv4i64_nxv2i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a1, zero, e16, m1, ta, mu
+; CHECK-NEXT:    vid.v v12
+; CHECK-NEXT:    vsrl.vi v13, v12, 1
+; CHECK-NEXT:    vand.vi v12, v12, 1
+; CHECK-NEXT:    vmsne.vi v0, v12, 0
+; CHECK-NEXT:    csrr a1, vlenb
+; CHECK-NEXT:    srli a1, a1, 2
+; CHECK-NEXT:    vadd.vx v13, v13, a1, v0.t
+; CHECK-NEXT:    vsetvli zero, zero, e64, m4, ta, ma
+; CHECK-NEXT:    vrgatherei16.vv v16, v8, v13
+; CHECK-NEXT:    vs4r.v v16, (a0)
+; CHECK-NEXT:    ret
+  %res = call <vscale x 4 x i64> @llvm.experimental.vector.interleave2.nxv4i64(<vscale x 2 x i64> %a, <vscale x 2 x i64> %b)
+  store <vscale x 4 x i64> %res, ptr %p
+  ret void
+}
+
+define void @vector_interleave_store_nxv8i64_nxv4i64(<vscale x 4 x i64> %a, <vscale x 4 x i64> %b, ptr %p) {
+; CHECK-LABEL: vector_interleave_store_nxv8i64_nxv4i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a1, zero, e16, m2, ta, mu
+; CHECK-NEXT:    vid.v v16
+; CHECK-NEXT:    vand.vi v18, v16, 1
+; CHECK-NEXT:    vmsne.vi v0, v18, 0
+; CHECK-NEXT:    vsrl.vi v16, v16, 1
+; CHECK-NEXT:    csrr a1, vlenb
+; CHECK-NEXT:    srli a1, a1, 1
+; CHECK-NEXT:    vadd.vx v16, v16, a1, v0.t
+; CHECK-NEXT:    vsetvli zero, zero, e64, m8, ta, ma
+; CHECK-NEXT:    vrgatherei16.vv v24, v8, v16
+; CHECK-NEXT:    vs8r.v v24, (a0)
+; CHECK-NEXT:    ret
+  %res = call <vscale x 8 x i64> @llvm.experimental.vector.interleave2.nxv8i64(<vscale x 4 x i64> %a, <vscale x 4 x i64> %b)
+  store <vscale x 8 x i64> %res, ptr %p
+  ret void
+}
+
+; This shouldn't be lowered to a vsseg because EMUL * NFIELDS >= 8
+define void @vector_interleave_store_nxv16i64_nxv8i64(<vscale x 8 x i64> %a, <vscale x 8 x i64> %b, ptr %p) {
+; CHECK-LABEL: vector_interleave_store_nxv16i64_nxv8i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    addi sp, sp, -16
+; CHECK-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-NEXT:    csrr a1, vlenb
+; CHECK-NEXT:    slli a1, a1, 4
+; CHECK-NEXT:    sub sp, sp, a1
+; CHECK-NEXT:    .cfi_escape 0x0f, 0x0d, 0x72, 0x00, 0x11, 0x10, 0x22, 0x11, 0x10, 0x92, 0xa2, 0x38, 0x00, 0x1e, 0x22 # sp + 16 + 16 * vlenb
+; CHECK-NEXT:    csrr a1, vlenb
+; CHECK-NEXT:    slli a1, a1, 3
+; CHECK-NEXT:    add a1, sp, a1
+; CHECK-NEXT:    addi a1, a1, 16
+; CHECK-NEXT:    vs8r.v v8, (a1) # Unknown-size Folded Spill
+; CHECK-NEXT:    vsetvli a1, zero, e16, m2, ta, mu
+; CHECK-NEXT:    vid.v v24
+; CHECK-NEXT:    vsrl.vi v2, v24, 1
+; CHECK-NEXT:    vand.vi v24, v24, 1
+; CHECK-NEXT:    vmsne.vi v0, v24, 0
+; CHECK-NEXT:    csrr a1, vlenb
+; CHECK-NEXT:    srli a2, a1, 1
+; CHECK-NEXT:    csrr a3, vlenb
+; CHECK-NEXT:    slli a3, a3, 3
+; CHECK-NEXT:    add a3, sp, a3
+; CHECK-NEXT:    addi a3, a3, 16
+; CHECK-NEXT:    vl8r.v v8, (a3) # Unknown-size Folded Reload
+; CHECK-NEXT:    vadd.vx v2, v2, a2, v0.t
+; CHECK-NEXT:    vmv4r.v v12, v16
+; CHECK-NEXT:    vsetvli zero, zero, e64, m8, ta, ma
+; CHECK-NEXT:    vrgatherei16.vv v24, v8, v2
+; CHECK-NEXT:    addi a2, sp, 16
+; CHECK-NEXT:    vs8r.v v24, (a2) # Unknown-size Folded Spill
+; CHECK-NEXT:    csrr a2, vlenb
+; CHECK-NEXT:    slli a2, a2, 3
+; CHECK-NEXT:    add a2, sp, a2
+; CHECK-NEXT:    addi a2, a2, 16
+; CHECK-NEXT:    vl8r.v v8, (a2) # Unknown-size Folded Reload
+; CHECK-NEXT:    vmv4r.v v16, v12
+; CHECK-NEXT:    vrgatherei16.vv v8, v16, v2
+; CHECK-NEXT:    slli a1, a1, 3
+; CHECK-NEXT:    add a1, a0, a1
+; CHECK-NEXT:    vs8r.v v8, (a1)
+; CHECK-NEXT:    addi a1, sp, 16
+; CHECK-NEXT:    vl8r.v v8, (a1) # Unknown-size Folded Reload
+; CHECK-NEXT:    vs8r.v v8, (a0)
+; CHECK-NEXT:    csrr a0, vlenb
+; CHECK-NEXT:    slli a0, a0, 4
+; CHECK-NEXT:    add sp, sp, a0
+; CHECK-NEXT:    addi sp, sp, 16
+; CHECK-NEXT:    ret
+  %res = call <vscale x 16 x i64> @llvm.experimental.vector.interleave2.nxv16i64(<vscale x 8 x i64> %a, <vscale x 8 x i64> %b)
+  store <vscale x 16 x i64> %res, ptr %p
+  ret void
+}
+
+declare <vscale x 32 x i1> @llvm.experimental.vector.interleave2.nxv32i1(<vscale x 16 x i1>, <vscale x 16 x i1>)
+declare <vscale x 16 x i16> @llvm.experimental.vector.interleave2.nxv16i16(<vscale x 8 x i16>, <vscale x 8 x i16>)
+declare <vscale x 8 x i32> @llvm.experimental.vector.interleave2.nxv8i32(<vscale x 4 x i32>, <vscale x 4 x i32>)
+declare <vscale x 4 x i64> @llvm.experimental.vector.interleave2.nxv4i64(<vscale x 2 x i64>, <vscale x 2 x i64>)
+declare <vscale x 8 x i64> @llvm.experimental.vector.interleave2.nxv8i64(<vscale x 4 x i64>, <vscale x 4 x i64>)
+declare <vscale x 16 x i64> @llvm.experimental.vector.interleave2.nxv16i64(<vscale x 8 x i64>, <vscale x 8 x i64>)
+
+; Floats
+
+define void @vector_interleave_store_nxv4f16_nxv2f16(<vscale x 2 x half> %a, <vscale x 2 x half> %b, ptr %p) {
+; CHECK-LABEL: vector_interleave_store_nxv4f16_nxv2f16:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a1, zero, e16, mf2, ta, ma
+; CHECK-NEXT:    vwaddu.vv v10, v8, v9
+; CHECK-NEXT:    li a1, -1
+; CHECK-NEXT:    vwmaccu.vx v10, a1, v9
+; CHECK-NEXT:    csrr a1, vlenb
+; CHECK-NEXT:    srli a1, a1, 2
+; CHECK-NEXT:    vsetvli a2, zero, e16, m1, ta, ma
+; CHECK-NEXT:    vslidedown.vx v8, v10, a1
+; CHECK-NEXT:    add a2, a1, a1
+; CHECK-NEXT:    vsetvli zero, a2, e16, m1, tu, ma
+; CHECK-NEXT:    vslideup.vx v10, v8, a1
+; CHECK-NEXT:    vs1r.v v10, (a0)
+; CHECK-NEXT:    ret
+  %res = call <vscale x 4 x half> @llvm.experimental.vector.interleave2.nxv4f16(<vscale x 2 x half> %a, <vscale x 2 x half> %b)
+  store <vscale x 4 x half> %res, ptr %p
+  ret void
+}
+
+define void @vector_interleave_store_nxv8f16_nxv4f16(<vscale x 4 x half> %a, <vscale x 4 x half> %b, ptr %p) {
+; CHECK-LABEL: vector_interleave_store_nxv8f16_nxv4f16:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a1, zero, e16, m1, ta, ma
+; CHECK-NEXT:    vwaddu.vv v10, v8, v9
+; CHECK-NEXT:    li a1, -1
+; CHECK-NEXT:    vwmaccu.vx v10, a1, v9
+; CHECK-NEXT:    vs2r.v v10, (a0)
+; CHECK-NEXT:    ret
+  %res = call <vscale x 8 x half> @llvm.experimental.vector.interleave2.nxv8f16(<vscale x 4 x half> %a, <vscale x 4 x half> %b)
+  store <vscale x 8 x half> %res, ptr %p
+  ret void
+}
+
+define void @vector_interleave_store_nxv4f32_nxv2f32(<vscale x 2 x float> %a, <vscale x 2 x float> %b, ptr %p) {
+; CHECK-LABEL: vector_interleave_store_nxv4f32_nxv2f32:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a1, zero, e32, m1, ta, ma
+; CHECK-NEXT:    vwaddu.vv v10, v8, v9
+; CHECK-NEXT:    li a1, -1
+; CHECK-NEXT:    vwmaccu.vx v10, a1, v9
+; CHECK-NEXT:    vs2r.v v10, (a0)
+; CHECK-NEXT:    ret
+  %res = call <vscale x 4 x float> @llvm.experimental.vector.interleave2.nxv4f32(<vscale x 2 x float> %a, <vscale x 2 x float> %b)
+  store <vscale x 4 x float> %res, ptr %p
+  ret void
+}
+
+define void @vector_interleave_store_nxv16f16_nxv8f16(<vscale x 8 x half> %a, <vscale x 8 x half> %b, ptr %p) {
+; CHECK-LABEL: vector_interleave_store_nxv16f16_nxv8f16:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a1, zero, e16, m2, ta, ma
+; CHECK-NEXT:    vwaddu.vv v12, v8, v10
+; CHECK-NEXT:    li a1, -1
+; CHECK-NEXT:    vwmaccu.vx v12, a1, v10
+; CHECK-NEXT:    vs4r.v v12, (a0)
+; CHECK-NEXT:    ret
+  %res = call <vscale x 16 x half> @llvm.experimental.vector.interleave2.nxv16f16(<vscale x 8 x half> %a, <vscale x 8 x half> %b)
+  store <vscale x 16 x half> %res, ptr %p
+  ret void
+}
+
+define void @vector_interleave_store_nxv8f32_nxv4f32(<vscale x 4 x float> %a, <vscale x 4 x float> %b, ptr %p) {
+; CHECK-LABEL: vector_interleave_store_nxv8f32_nxv4f32:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a1, zero, e32, m2, ta, ma
+; CHECK-NEXT:    vwaddu.vv v12, v8, v10
+; CHECK-NEXT:    li a1, -1
+; CHECK-NEXT:    vwmaccu.vx v12, a1, v10
+; CHECK-NEXT:    vs4r.v v12, (a0)
+; CHECK-NEXT:    ret
+  %res = call <vscale x 8 x float> @llvm.experimental.vector.interleave2.nxv8f32(<vscale x 4 x float> %a, <vscale x 4 x float> %b)
+  store <vscale x 8 x float> %res, ptr %p
+  ret void
+}
+
+define void @vector_interleave_store_nxv4f64_nxv2f64(<vscale x 2 x double> %a, <vscale x 2 x double> %b, ptr %p) {
+; CHECK-LABEL: vector_interleave_store_nxv4f64_nxv2f64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a1, zero, e16, m1, ta, mu
+; CHECK-NEXT:    vid.v v12
+; CHECK-NEXT:    vsrl.vi v13, v12, 1
+; CHECK-NEXT:    vand.vi v12, v12, 1
+; CHECK-NEXT:    vmsne.vi v0, v12, 0
+; CHECK-NEXT:    csrr a1, vlenb
+; CHECK-NEXT:    srli a1, a1, 2
+; CHECK-NEXT:    vadd.vx v13, v13, a1, v0.t
+; CHECK-NEXT:    vsetvli zero, zero, e64, m4, ta, ma
+; CHECK-NEXT:    vrgatherei16.vv v16, v8, v13
+; CHECK-NEXT:    vs4r.v v16, (a0)
+; CHECK-NEXT:    ret
+  %res = call <vscale x 4 x double> @llvm.experimental.vector.interleave2.nxv4f64(<vscale x 2 x double> %a, <vscale x 2 x double> %b)
+  store <vscale x 4 x double> %res, ptr %p
+  ret void
+}
+
+
+declare <vscale x 4 x half> @llvm.experimental.vector.interleave2.nxv4f16(<vscale x 2 x half>, <vscale x 2 x half>)
+declare <vscale x 8 x half> @llvm.experimental.vector.interleave2.nxv8f16(<vscale x 4 x half>, <vscale x 4 x half>)
+declare <vscale x 4 x float> @llvm.experimental.vector.interleave2.nxv4f32(<vscale x 2 x float>, <vscale x 2 x float>)
+declare <vscale x 16 x half> @llvm.experimental.vector.interleave2.nxv16f16(<vscale x 8 x half>, <vscale x 8 x half>)
+declare <vscale x 8 x float> @llvm.experimental.vector.interleave2.nxv8f32(<vscale x 4 x float>, <vscale x 4 x float>)
+declare <vscale x 4 x double> @llvm.experimental.vector.interleave2.nxv4f64(<vscale x 2 x double>, <vscale x 2 x double>)