diff --git a/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vandn.ll b/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vandn.ll
new file mode 100644
index 0000000..7389093
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vandn.ll
@@ -0,0 +1,89 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=riscv32 -mattr=+v -verify-machineinstrs < %s | FileCheck %s
+; RUN: llc -mtriple=riscv64 -mattr=+v -verify-machineinstrs < %s | FileCheck %s
+; RUN: llc -mtriple=riscv32 -mattr=+v,+zvkb -verify-machineinstrs < %s | FileCheck %s --check-prefixes=CHECK-ZVKB
+; RUN: llc -mtriple=riscv64 -mattr=+v,+zvkb -verify-machineinstrs < %s | FileCheck %s --check-prefixes=CHECK-ZVKB
+
+define <8 x i8> @not_signbit_mask_v8i8(<8 x i8> %a, <8 x i8> %b) {
+; CHECK-LABEL: not_signbit_mask_v8i8:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli zero, 8, e8, mf2, ta, ma
+; CHECK-NEXT:    vmsgt.vi v0, v8, -1
+; CHECK-NEXT:    vmv.v.i v8, 0
+; CHECK-NEXT:    vmerge.vvm v8, v8, v9, v0
+; CHECK-NEXT:    ret
+;
+; CHECK-ZVKB-LABEL: not_signbit_mask_v8i8:
+; CHECK-ZVKB:       # %bb.0:
+; CHECK-ZVKB-NEXT:    vsetivli zero, 8, e8, mf2, ta, ma
+; CHECK-ZVKB-NEXT:    vmsgt.vi v0, v8, -1
+; CHECK-ZVKB-NEXT:    vmv.v.i v8, 0
+; CHECK-ZVKB-NEXT:    vmerge.vvm v8, v8, v9, v0
+; CHECK-ZVKB-NEXT:    ret
+  %cond = icmp sgt <8 x i8> %a, splat (i8 -1)
+  %r = select <8 x i1> %cond, <8 x i8> %b, <8 x i8> zeroinitializer
+  ret <8 x i8> %r
+}
+
+define <4 x i16> @not_signbit_mask_v4i16(<4 x i16> %a, <4 x i16> %b) {
+; CHECK-LABEL: not_signbit_mask_v4i16:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli zero, 4, e16, mf2, ta, ma
+; CHECK-NEXT:    vmsgt.vi v0, v8, -1
+; CHECK-NEXT:    vmv.v.i v8, 0
+; CHECK-NEXT:    vmerge.vvm v8, v8, v9, v0
+; CHECK-NEXT:    ret
+;
+; CHECK-ZVKB-LABEL: not_signbit_mask_v4i16:
+; CHECK-ZVKB:       # %bb.0:
+; CHECK-ZVKB-NEXT:    vsetivli zero, 4, e16, mf2, ta, ma
+; CHECK-ZVKB-NEXT:    vmsgt.vi v0, v8, -1
+; CHECK-ZVKB-NEXT:    vmv.v.i v8, 0
+; CHECK-ZVKB-NEXT:    vmerge.vvm v8, v8, v9, v0
+; CHECK-ZVKB-NEXT:    ret
+  %cond = icmp sgt <4 x i16> %a, splat (i16 -1)
+  %r = select <4 x i1> %cond, <4 x i16> %b, <4 x i16> zeroinitializer
+  ret <4 x i16> %r
+}
+
+define <2 x i32> @not_signbit_mask_v2i32(<2 x i32> %a, <2 x i32> %b) {
+; CHECK-LABEL: not_signbit_mask_v2i32:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli zero, 2, e32, mf2, ta, ma
+; CHECK-NEXT:    vmsgt.vi v0, v8, -1
+; CHECK-NEXT:    vmv.v.i v8, 0
+; CHECK-NEXT:    vmerge.vvm v8, v8, v9, v0
+; CHECK-NEXT:    ret
+;
+; CHECK-ZVKB-LABEL: not_signbit_mask_v2i32:
+; CHECK-ZVKB:       # %bb.0:
+; CHECK-ZVKB-NEXT:    vsetivli zero, 2, e32, mf2, ta, ma
+; CHECK-ZVKB-NEXT:    vmsgt.vi v0, v8, -1
+; CHECK-ZVKB-NEXT:    vmv.v.i v8, 0
+; CHECK-ZVKB-NEXT:    vmerge.vvm v8, v8, v9, v0
+; CHECK-ZVKB-NEXT:    ret
+  %cond = icmp sgt <2 x i32> %a, splat (i32 -1)
+  %r = select <2 x i1> %cond, <2 x i32> %b, <2 x i32> zeroinitializer
+  ret <2 x i32> %r
+}
+
+define <2 x i64> @not_signbit_mask_v2i64(<2 x i64> %a, <2 x i64> %b) {
+; CHECK-LABEL: not_signbit_mask_v2i64:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vsetivli zero, 2, e64, m1, ta, ma
+; CHECK-NEXT:    vmsgt.vi v0, v8, -1
+; CHECK-NEXT:    vmv.v.i v8, 0
+; CHECK-NEXT:    vmerge.vvm v8, v8, v9, v0
+; CHECK-NEXT:    ret
+;
+; CHECK-ZVKB-LABEL: not_signbit_mask_v2i64:
+; CHECK-ZVKB:       # %bb.0:
+; CHECK-ZVKB-NEXT:    vsetivli zero, 2, e64, m1, ta, ma
+; CHECK-ZVKB-NEXT:    vmsgt.vi v0, v8, -1
+; CHECK-ZVKB-NEXT:    vmv.v.i v8, 0
+; CHECK-ZVKB-NEXT:    vmerge.vvm v8, v8, v9, v0
+; CHECK-ZVKB-NEXT:    ret
+  %cond = icmp sgt <2 x i64> %a, splat (i64 -1)
+  %r = select <2 x i1> %cond, <2 x i64> %b, <2 x i64> zeroinitializer
+  ret <2 x i64> %r
+}