diff --git a/llvm/test/CodeGen/RISCV/rvv/combine-sats.ll b/llvm/test/CodeGen/RISCV/rvv/combine-sats.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/rvv/combine-sats.ll
@@ -0,0 +1,403 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=riscv32 -mattr=+m,+experimental-v -riscv-v-vector-bits-min=128 < %s \
+; RUN:     | FileCheck %s --check-prefixes=CHECK,RV32
+; RUN: llc -mtriple=riscv64 -mattr=+m,+experimental-v -riscv-v-vector-bits-min=128 < %s \
+; RUN:     | FileCheck %s --check-prefixes=CHECK,RV64
+
+; fold (add (umax X, C), -C) --> (usubsat X, C)
+
+define <2 x i64> @add_umax_v2i64(<2 x i64> %a0) {
+; CHECK-LABEL: add_umax_v2i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    addi a0, zero, 7
+; CHECK-NEXT:    vsetivli zero, 2, e64, m1, ta, mu
+; CHECK-NEXT:    vmaxu.vx v25, v8, a0
+; CHECK-NEXT:    vadd.vi v8, v25, -7
+; CHECK-NEXT:    ret
+  %v1 = call <2 x i64> @llvm.umax.v2i64(<2 x i64> %a0, <2 x i64> <i64 7, i64 7>)
+  %v2 = add <2 x i64> %v1, <i64 -7, i64 -7>
+  ret <2 x i64> %v2
+}
+
+define <vscale x 2 x i64> @add_umax_nxv2i64(<vscale x 2 x i64> %a0) {
+; CHECK-LABEL: add_umax_nxv2i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    addi a0, zero, 7
+; CHECK-NEXT:    vsetvli a1, zero, e64, m2, ta, mu
+; CHECK-NEXT:    vmaxu.vx v26, v8, a0
+; CHECK-NEXT:    vadd.vi v8, v26, -7
+; CHECK-NEXT:    ret
+  %ins1 = insertelement <vscale x 2 x i64> poison, i64 7, i32 0
+  %splat1 = shufflevector <vscale x 2 x i64> %ins1, <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer
+  %ins2 = insertelement <vscale x 2 x i64> poison, i64 -7, i32 0
+  %splat2 = shufflevector <vscale x 2 x i64> %ins2, <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer
+  %v1 = call <vscale x 2 x i64> @llvm.umax.nxv2i64(<vscale x 2 x i64> %a0, <vscale x 2 x i64> %splat1)
+  %v2 = add <vscale x 2 x i64> %v1, %splat2
+  ret <vscale x 2 x i64> %v2
+}
+
+; Try to find umax(a,b) - b or a - umin(a,b) patterns
+; they may be converted to usubsat(a,b).
+
+define <2 x i64> @sub_umax_v2i64(<2 x i64> %a0, <2 x i64> %a1) {
+; RV32-LABEL: sub_umax_v2i64:
+; RV32:       # %bb.0:
+; RV32-NEXT:    vsetivli zero, 2, e64, m1, ta, mu
+; RV32-NEXT:    vsub.vv v25, v8, v9
+; RV32-NEXT:    vmsltu.vv v0, v8, v25
+; RV32-NEXT:    vsetivli zero, 4, e32, m1, ta, mu
+; RV32-NEXT:    vmv.v.i v26, 0
+; RV32-NEXT:    vsetivli zero, 2, e64, m1, ta, mu
+; RV32-NEXT:    vmerge.vvm v8, v25, v26, v0
+; RV32-NEXT:    ret
+;
+; RV64-LABEL: sub_umax_v2i64:
+; RV64:       # %bb.0:
+; RV64-NEXT:    vsetivli zero, 2, e64, m1, ta, mu
+; RV64-NEXT:    vsub.vv v25, v8, v9
+; RV64-NEXT:    vmsltu.vv v0, v8, v25
+; RV64-NEXT:    vmerge.vim v8, v25, 0, v0
+; RV64-NEXT:    ret
+  %v1 = call <2 x i64> @llvm.umax.v2i64(<2 x i64> %a0, <2 x i64> %a1)
+  %v2 = sub <2 x i64> %v1, %a1
+  ret <2 x i64> %v2
+}
+
+define <vscale x 2 x i64> @sub_umax_nxv2i64(<vscale x 2 x i64> %a0, <vscale x 2 x i64> %a1) {
+; CHECK-LABEL: sub_umax_nxv2i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e64, m2, ta, mu
+; CHECK-NEXT:    vmaxu.vv v26, v8, v10
+; CHECK-NEXT:    vsub.vv v8, v26, v10
+; CHECK-NEXT:    ret
+  %v1 = call <vscale x 2 x i64> @llvm.umax.nxv2i64(<vscale x 2 x i64> %a0, <vscale x 2 x i64> %a1)
+  %v2 = sub <vscale x 2 x i64> %v1, %a1
+  ret <vscale x 2 x i64> %v2
+}
+
+define <2 x i64> @sub_umin_v2i64(<2 x i64> %a0, <2 x i64> %a1) {
+; RV32-LABEL: sub_umin_v2i64:
+; RV32:       # %bb.0:
+; RV32-NEXT:    vsetivli zero, 2, e64, m1, ta, mu
+; RV32-NEXT:    vsub.vv v25, v8, v9
+; RV32-NEXT:    vmsltu.vv v0, v8, v25
+; RV32-NEXT:    vsetivli zero, 4, e32, m1, ta, mu
+; RV32-NEXT:    vmv.v.i v26, 0
+; RV32-NEXT:    vsetivli zero, 2, e64, m1, ta, mu
+; RV32-NEXT:    vmerge.vvm v8, v25, v26, v0
+; RV32-NEXT:    ret
+;
+; RV64-LABEL: sub_umin_v2i64:
+; RV64:       # %bb.0:
+; RV64-NEXT:    vsetivli zero, 2, e64, m1, ta, mu
+; RV64-NEXT:    vsub.vv v25, v8, v9
+; RV64-NEXT:    vmsltu.vv v0, v8, v25
+; RV64-NEXT:    vmerge.vim v8, v25, 0, v0
+; RV64-NEXT:    ret
+  %v1 = call <2 x i64> @llvm.umin.v2i64(<2 x i64> %a0, <2 x i64> %a1)
+  %v2 = sub <2 x i64> %a0, %v1
+  ret <2 x i64> %v2
+}
+
+define <vscale x 2 x i64> @sub_umin_nxv2i64(<vscale x 2 x i64> %a0, <vscale x 2 x i64> %a1) {
+; CHECK-LABEL: sub_umin_nxv2i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e64, m2, ta, mu
+; CHECK-NEXT:    vmaxu.vv v26, v8, v10
+; CHECK-NEXT:    vsub.vv v8, v26, v10
+; CHECK-NEXT:    ret
+  %v1 = call <vscale x 2 x i64> @llvm.umin.nxv2i64(<vscale x 2 x i64> %a0, <vscale x 2 x i64> %a1)
+  %v2 = sub <vscale x 2 x i64> %a0, %v1
+  ret <vscale x 2 x i64> %v2
+}
+
+; Match VSELECTs into sub with unsigned saturation.
+
+; x >= y ? x-y : 0 --> usubsat x, y
+
+define <2 x i64> @vselect_sub_v2i64(<2 x i64> %a0, <2 x i64> %a1) {
+; CHECK-LABEL: vselect_sub_v2i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli zero, 2, e64, m1, ta, mu
+; CHECK-NEXT:    vmsleu.vv v0, v9, v8
+; CHECK-NEXT:    vsub.vv v25, v8, v9
+; CHECK-NEXT:    vmv.v.i v26, 0
+; CHECK-NEXT:    vmerge.vvm v8, v26, v25, v0
+; CHECK-NEXT:    ret
+  %cmp = icmp uge <2 x i64> %a0, %a1
+  %v1 = sub <2 x i64> %a0, %a1
+  %v2 = select <2 x i1> %cmp, <2 x i64> %v1, <2 x i64> zeroinitializer
+  ret <2 x i64> %v2
+}
+
+define <vscale x 2 x i64> @vselect_sub_nxv2i64(<vscale x 2 x i64> %a0, <vscale x 2 x i64> %a1) {
+; CHECK-LABEL: vselect_sub_nxv2i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e64, m2, ta, mu
+; CHECK-NEXT:    vmsleu.vv v0, v10, v8
+; CHECK-NEXT:    vsub.vv v26, v8, v10
+; CHECK-NEXT:    vmv.v.i v28, 0
+; CHECK-NEXT:    vmerge.vvm v8, v28, v26, v0
+; CHECK-NEXT:    ret
+  %cmp = icmp uge <vscale x 2 x i64> %a0, %a1
+  %v1 = sub <vscale x 2 x i64> %a0, %a1
+  %v2 = select <vscale x 2 x i1> %cmp, <vscale x 2 x i64> %v1, <vscale x 2 x i64> zeroinitializer
+  ret <vscale x 2 x i64> %v2
+}
+
+define <8 x i16> @vselect_sub_2_v8i16(<8 x i16> %x, i16 zeroext %w) nounwind {
+; CHECK-LABEL: vselect_sub_2_v8i16:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    vsetivli zero, 8, e16, m1, ta, mu
+; CHECK-NEXT:    vmsltu.vx v0, v8, a0
+; CHECK-NEXT:    vsub.vx v25, v8, a0
+; CHECK-NEXT:    vmerge.vim v8, v25, 0, v0
+; CHECK-NEXT:    ret
+entry:
+  %0 = insertelement <8 x i16> undef, i16 %w, i32 0
+  %broadcast15 = shufflevector <8 x i16> %0, <8 x i16> undef, <8 x i32> zeroinitializer
+  %1 = icmp ult <8 x i16> %x, %broadcast15
+  %2 = sub <8 x i16> %x, %broadcast15
+  %res = select <8 x i1> %1, <8 x i16> zeroinitializer, <8 x i16> %2
+  ret <8 x i16> %res
+}
+
+define <vscale x 8 x i16> @vselect_sub_2_nxv8i16(<vscale x 8 x i16> %x, i16 zeroext %w) nounwind {
+; CHECK-LABEL: vselect_sub_2_nxv8i16:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    vsetvli a1, zero, e16, m2, ta, mu
+; CHECK-NEXT:    vmsltu.vx v0, v8, a0
+; CHECK-NEXT:    vsub.vx v26, v8, a0
+; CHECK-NEXT:    vmerge.vim v8, v26, 0, v0
+; CHECK-NEXT:    ret
+entry:
+  %0 = insertelement <vscale x 8 x i16> undef, i16 %w, i32 0
+  %broadcast15 = shufflevector <vscale x 8 x i16> %0, <vscale x 8 x i16> undef, <vscale x 8 x i32> zeroinitializer
+  %1 = icmp ult <vscale x 8 x i16> %x, %broadcast15
+  %2 = sub <vscale x 8 x i16> %x, %broadcast15
+  %res = select <vscale x 8 x i1> %1, <vscale x 8 x i16> zeroinitializer, <vscale x 8 x i16> %2
+  ret <vscale x 8 x i16> %res
+}
+
+; x >  y ? x-y : 0 --> usubsat x, y
+; x > C-1 ? x+-C : 0 --> usubsat x, C
+
+define <2 x i64> @vselect_add_const_v2i64(<2 x i64> %a0) {
+; CHECK-LABEL: vselect_add_const_v2i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli zero, 2, e64, m1, ta, mu
+; CHECK-NEXT:    vadd.vi v25, v8, -6
+; CHECK-NEXT:    addi a0, zero, 5
+; CHECK-NEXT:    vmsgtu.vx v0, v8, a0
+; CHECK-NEXT:    vmv.v.i v26, 0
+; CHECK-NEXT:    vmerge.vvm v8, v26, v25, v0
+; CHECK-NEXT:    ret
+  %v1 = add <2 x i64> %a0, <i64 -6, i64 -6>
+  %cmp = icmp ugt <2 x i64> %a0, <i64 5, i64 5>
+  %v2 = select <2 x i1> %cmp, <2 x i64> %v1, <2 x i64> zeroinitializer
+  ret <2 x i64> %v2
+}
+
+define <vscale x 2 x i64> @vselect_add_const_nxv2i64(<vscale x 2 x i64> %a0) {
+; CHECK-LABEL: vselect_add_const_nxv2i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e64, m2, ta, mu
+; CHECK-NEXT:    vadd.vi v26, v8, -6
+; CHECK-NEXT:    vmsgtu.vi v0, v8, 5
+; CHECK-NEXT:    vmv.v.i v28, 0
+; CHECK-NEXT:    vmerge.vvm v8, v28, v26, v0
+; CHECK-NEXT:    ret
+  %cm1 = insertelement <vscale x 2 x i64> poison, i64 -6, i32 0
+  %splatcm1 = shufflevector <vscale x 2 x i64> %cm1, <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer
+  %nc = insertelement <vscale x 2 x i64> poison, i64 5, i32 0
+  %splatnc = shufflevector <vscale x 2 x i64> %nc, <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer
+  %v1 = add <vscale x 2 x i64> %a0, %splatcm1
+  %cmp = icmp ugt <vscale x 2 x i64> %a0, %splatnc
+  %v2 = select <vscale x 2 x i1> %cmp, <vscale x 2 x i64> %v1, <vscale x 2 x i64> zeroinitializer
+  ret <vscale x 2 x i64> %v2
+}
+
+define <2 x i16> @vselect_add_const_signbit_v2i16(<2 x i16> %a0) {
+; RV32-LABEL: vselect_add_const_signbit_v2i16:
+; RV32:       # %bb.0:
+; RV32-NEXT:    lui a0, 8
+; RV32-NEXT:    addi a0, a0, -2
+; RV32-NEXT:    vsetivli zero, 2, e16, mf4, ta, mu
+; RV32-NEXT:    vmsgtu.vx v0, v8, a0
+; RV32-NEXT:    lui a0, 1048568
+; RV32-NEXT:    addi a0, a0, 1
+; RV32-NEXT:    vadd.vx v25, v8, a0
+; RV32-NEXT:    vmv.v.i v26, 0
+; RV32-NEXT:    vmerge.vvm v8, v26, v25, v0
+; RV32-NEXT:    ret
+;
+; RV64-LABEL: vselect_add_const_signbit_v2i16:
+; RV64:       # %bb.0:
+; RV64-NEXT:    lui a0, 8
+; RV64-NEXT:    addiw a0, a0, -2
+; RV64-NEXT:    vsetivli zero, 2, e16, mf4, ta, mu
+; RV64-NEXT:    vmsgtu.vx v0, v8, a0
+; RV64-NEXT:    lui a0, 1048568
+; RV64-NEXT:    addiw a0, a0, 1
+; RV64-NEXT:    vadd.vx v25, v8, a0
+; RV64-NEXT:    vmv.v.i v26, 0
+; RV64-NEXT:    vmerge.vvm v8, v26, v25, v0
+; RV64-NEXT:    ret
+  %cmp = icmp ugt <2 x i16> %a0, <i16 32766, i16 32766>
+  %v1 = add <2 x i16> %a0, <i16 -32767, i16 -32767>
+  %v2 = select <2 x i1> %cmp, <2 x i16> %v1, <2 x i16> zeroinitializer
+  ret <2 x i16> %v2
+}
+
+define <vscale x 2 x i16> @vselect_add_const_signbit_nxv2i16(<vscale x 2 x i16> %a0) {
+; RV32-LABEL: vselect_add_const_signbit_nxv2i16:
+; RV32:       # %bb.0:
+; RV32-NEXT:    lui a0, 8
+; RV32-NEXT:    addi a0, a0, -2
+; RV32-NEXT:    vsetvli a1, zero, e16, mf2, ta, mu
+; RV32-NEXT:    vmsgtu.vx v0, v8, a0
+; RV32-NEXT:    lui a0, 1048568
+; RV32-NEXT:    addi a0, a0, 1
+; RV32-NEXT:    vadd.vx v25, v8, a0
+; RV32-NEXT:    vmv.v.i v26, 0
+; RV32-NEXT:    vmerge.vvm v8, v26, v25, v0
+; RV32-NEXT:    ret
+;
+; RV64-LABEL: vselect_add_const_signbit_nxv2i16:
+; RV64:       # %bb.0:
+; RV64-NEXT:    lui a0, 8
+; RV64-NEXT:    addiw a0, a0, -2
+; RV64-NEXT:    vsetvli a1, zero, e16, mf2, ta, mu
+; RV64-NEXT:    vmsgtu.vx v0, v8, a0
+; RV64-NEXT:    lui a0, 1048568
+; RV64-NEXT:    addiw a0, a0, 1
+; RV64-NEXT:    vadd.vx v25, v8, a0
+; RV64-NEXT:    vmv.v.i v26, 0
+; RV64-NEXT:    vmerge.vvm v8, v26, v25, v0
+; RV64-NEXT:    ret
+  %cm1 = insertelement <vscale x 2 x i16> poison, i16 32766, i32 0
+  %splatcm1 = shufflevector <vscale x 2 x i16> %cm1, <vscale x 2 x i16> poison, <vscale x 2 x i32> zeroinitializer
+  %nc = insertelement <vscale x 2 x i16> poison, i16 -32767, i32 0
+  %splatnc = shufflevector <vscale x 2 x i16> %nc, <vscale x 2 x i16> poison, <vscale x 2 x i32> zeroinitializer
+  %cmp = icmp ugt <vscale x 2 x i16> %a0, %splatcm1
+  %v1 = add <vscale x 2 x i16> %a0, %splatnc
+  %v2 = select <vscale x 2 x i1> %cmp, <vscale x 2 x i16> %v1, <vscale x 2 x i16> zeroinitializer
+  ret <vscale x 2 x i16> %v2
+}
+
+; x s< 0 ? x^C : 0 --> usubsat x, C
+
+define <2 x i16> @vselect_xor_const_signbit_v2i16(<2 x i16> %a0) {
+; CHECK-LABEL: vselect_xor_const_signbit_v2i16:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli zero, 2, e16, mf4, ta, mu
+; CHECK-NEXT:    vmsle.vi v0, v8, -1
+; CHECK-NEXT:    vmv.v.i v25, 0
+; CHECK-NEXT:    lui a0, 1048568
+; CHECK-NEXT:    vxor.vx v26, v8, a0
+; CHECK-NEXT:    vmerge.vvm v8, v25, v26, v0
+; CHECK-NEXT:    ret
+  %cmp = icmp slt <2 x i16> %a0, zeroinitializer
+  %v1 = xor <2 x i16> %a0, <i16 -32768, i16 -32768>
+  %v2 = select <2 x i1> %cmp, <2 x i16> %v1, <2 x i16> zeroinitializer
+  ret <2 x i16> %v2
+}
+
+define <vscale x 2 x i16> @vselect_xor_const_signbit_nxv2i16(<vscale x 2 x i16> %a0) {
+; CHECK-LABEL: vselect_xor_const_signbit_nxv2i16:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e16, mf2, ta, mu
+; CHECK-NEXT:    vmsle.vi v0, v8, -1
+; CHECK-NEXT:    vmv.v.i v25, 0
+; CHECK-NEXT:    lui a0, 1048568
+; CHECK-NEXT:    vxor.vx v26, v8, a0
+; CHECK-NEXT:    vmerge.vvm v8, v25, v26, v0
+; CHECK-NEXT:    ret
+  %cmp = icmp slt <vscale x 2 x i16> %a0, zeroinitializer
+  %ins = insertelement <vscale x 2 x i16> poison, i16 -32768, i32 0
+  %splat = shufflevector <vscale x 2 x i16> %ins, <vscale x 2 x i16> poison, <vscale x 2 x i32> zeroinitializer
+  %v1 = xor <vscale x 2 x i16> %a0, %splat
+  %v2 = select <vscale x 2 x i1> %cmp, <vscale x 2 x i16> %v1, <vscale x 2 x i16> zeroinitializer
+  ret <vscale x 2 x i16> %v2
+}
+
+; Match VSELECTs into add with unsigned saturation.
+
+; x <= x+y ? x+y : ~0 --> uaddsat x, y
+; x+y >= x ? x+y : ~0 --> uaddsat x, y
+
+define <2 x i64> @vselect_add_v2i64(<2 x i64> %a0, <2 x i64> %a1) {
+; CHECK-LABEL: vselect_add_v2i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli zero, 2, e64, m1, ta, mu
+; CHECK-NEXT:    vadd.vv v25, v8, v9
+; CHECK-NEXT:    vmsleu.vv v0, v8, v25
+; CHECK-NEXT:    vmv.v.i v26, -1
+; CHECK-NEXT:    vmerge.vvm v8, v26, v25, v0
+; CHECK-NEXT:    ret
+  %v1 = add <2 x i64> %a0, %a1
+  %cmp = icmp ule <2 x i64> %a0, %v1
+  %v2 = select <2 x i1> %cmp, <2 x i64> %v1, <2 x i64> <i64 -1, i64 -1>
+  ret <2 x i64> %v2
+}
+
+define <vscale x 2 x i64> @vselect_add_nxv2i64(<vscale x 2 x i64> %a0, <vscale x 2 x i64> %a1) {
+; CHECK-LABEL: vselect_add_nxv2i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e64, m2, ta, mu
+; CHECK-NEXT:    vadd.vv v26, v8, v10
+; CHECK-NEXT:    vmsleu.vv v0, v8, v26
+; CHECK-NEXT:    vmv.v.i v28, -1
+; CHECK-NEXT:    vmerge.vvm v8, v28, v26, v0
+; CHECK-NEXT:    ret
+  %v1 = add <vscale x 2 x i64> %a0, %a1
+  %cmp = icmp ule <vscale x 2 x i64> %a0, %v1
+  %allones = insertelement <vscale x 2 x i64> poison, i64 -1, i32 0
+  %splatallones = shufflevector <vscale x 2 x i64> %allones, <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer
+  %v2 = select <vscale x 2 x i1> %cmp, <vscale x 2 x i64> %v1, <vscale x 2 x i64> %splatallones
+  ret <vscale x 2 x i64> %v2
+}
+
+; if the rhs is a constant we have to reverse the const canonicalization.
+; x >= ~C ? x+C : ~0 --> uaddsat x, C
+
+define <2 x i64> @vselect_add_const_2_v2i64(<2 x i64> %a0) {
+; CHECK-LABEL: vselect_add_const_2_v2i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli zero, 2, e64, m1, ta, mu
+; CHECK-NEXT:    vadd.vi v25, v8, 6
+; CHECK-NEXT:    vmsleu.vi v0, v8, -7
+; CHECK-NEXT:    vmv.v.i v26, -1
+; CHECK-NEXT:    vmerge.vvm v8, v26, v25, v0
+; CHECK-NEXT:    ret
+  %v1 = add <2 x i64> %a0, <i64 6, i64 6>
+  %cmp = icmp ule <2 x i64> %a0, <i64 -7, i64 -7>
+  %v2 = select <2 x i1> %cmp, <2 x i64> %v1, <2 x i64> <i64 -1, i64 -1>
+  ret <2 x i64> %v2
+}
+
+define <vscale x 2 x i64> @vselect_add_const_2_nxv2i64(<vscale x 2 x i64> %a0) {
+; CHECK-LABEL: vselect_add_const_2_nxv2i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetvli a0, zero, e64, m2, ta, mu
+; CHECK-NEXT:    vadd.vi v26, v8, 6
+; CHECK-NEXT:    vmsleu.vi v0, v8, -7
+; CHECK-NEXT:    vmv.v.i v28, -1
+; CHECK-NEXT:    vmerge.vvm v8, v28, v26, v0
+; CHECK-NEXT:    ret
+  %cm1 = insertelement <vscale x 2 x i64> poison, i64 6, i32 0
+  %splatcm1 = shufflevector <vscale x 2 x i64> %cm1, <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer
+  %nc = insertelement <vscale x 2 x i64> poison, i64 -7, i32 0
+  %splatnc = shufflevector <vscale x 2 x i64> %nc, <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer
+  %v1 = add <vscale x 2 x i64> %a0, %splatcm1
+  %cmp = icmp ule <vscale x 2 x i64> %a0, %splatnc
+  %allones = insertelement <vscale x 2 x i64> poison, i64 -1, i32 0
+  %splatallones = shufflevector <vscale x 2 x i64> %allones, <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer
+  %v2 = select <vscale x 2 x i1> %cmp, <vscale x 2 x i64> %v1, <vscale x 2 x i64> %splatallones
+  ret <vscale x 2 x i64> %v2
+}
+
+declare <2 x i64> @llvm.umin.v2i64(<2 x i64>, <2 x i64>)
+declare <2 x i64> @llvm.umax.v2i64(<2 x i64>, <2 x i64>)
+declare <vscale x 2 x i64> @llvm.umin.nxv2i64(<vscale x 2 x i64>, <vscale x 2 x i64>)
+declare <vscale x 2 x i64> @llvm.umax.nxv2i64(<vscale x 2 x i64>, <vscale x 2 x i64>)