diff --git a/gas/testsuite/gas/riscv/x-thead-vector.d b/gas/testsuite/gas/riscv/x-thead-vector.d
index 03d8ede7c77..014c2fdb80d 100644
--- a/gas/testsuite/gas/riscv/x-thead-vector.d
+++ b/gas/testsuite/gas/riscv/x-thead-vector.d
@@ -1618,3 +1618,33 @@ Disassembly of section .text:
 [ 	]+[0-9a-f]+:[ 	]+58812257[ 	]+th.vmsof.m[ 	]+v4,v8,v0.t
 [ 	]+[0-9a-f]+:[ 	]+58882257[ 	]+th.viota.m[ 	]+v4,v8,v0.t
 [ 	]+[0-9a-f]+:[ 	]+5808a257[ 	]+th.vid.v[ 	]+v4,v0.t
+[ 	]+[0-9a-f]+:[ 	]+32c02557[ 	]+th.vmv.x.s[ 	]+a0,v12
+[ 	]+[0-9a-f]+:[ 	]+32c62557[ 	]+th.vext.x.v[ 	]+a0,v12,a2
+[ 	]+[0-9a-f]+:[ 	]+36056257[ 	]+th.vmv.s.x[ 	]+v4,a0
+[ 	]+[0-9a-f]+:[ 	]+32801557[ 	]+th.vfmv.f.s[ 	]+fa0,v8
+[ 	]+[0-9a-f]+:[ 	]+3605d257[ 	]+th.vfmv.s.f[ 	]+v4,fa1
+[ 	]+[0-9a-f]+:[ 	]+3a85c257[ 	]+th.vslideup.vx[ 	]+v4,v8,a1
+[ 	]+[0-9a-f]+:[ 	]+3a803257[ 	]+th.vslideup.vi[ 	]+v4,v8,0
+[ 	]+[0-9a-f]+:[ 	]+3a8fb257[ 	]+th.vslideup.vi[ 	]+v4,v8,31
+[ 	]+[0-9a-f]+:[ 	]+3e85c257[ 	]+th.vslidedown.vx[ 	]+v4,v8,a1
+[ 	]+[0-9a-f]+:[ 	]+3e803257[ 	]+th.vslidedown.vi[ 	]+v4,v8,0
+[ 	]+[0-9a-f]+:[ 	]+3e8fb257[ 	]+th.vslidedown.vi[ 	]+v4,v8,31
+[ 	]+[0-9a-f]+:[ 	]+3885c257[ 	]+th.vslideup.vx[ 	]+v4,v8,a1,v0.t
+[ 	]+[0-9a-f]+:[ 	]+38803257[ 	]+th.vslideup.vi[ 	]+v4,v8,0,v0.t
+[ 	]+[0-9a-f]+:[ 	]+388fb257[ 	]+th.vslideup.vi[ 	]+v4,v8,31,v0.t
+[ 	]+[0-9a-f]+:[ 	]+3c85c257[ 	]+th.vslidedown.vx[ 	]+v4,v8,a1,v0.t
+[ 	]+[0-9a-f]+:[ 	]+3c803257[ 	]+th.vslidedown.vi[ 	]+v4,v8,0,v0.t
+[ 	]+[0-9a-f]+:[ 	]+3c8fb257[ 	]+th.vslidedown.vi[ 	]+v4,v8,31,v0.t
+[ 	]+[0-9a-f]+:[ 	]+3a85e257[ 	]+th.vslide1up.vx[ 	]+v4,v8,a1
+[ 	]+[0-9a-f]+:[ 	]+3e85e257[ 	]+th.vslide1down.vx[ 	]+v4,v8,a1
+[ 	]+[0-9a-f]+:[ 	]+3885e257[ 	]+th.vslide1up.vx[ 	]+v4,v8,a1,v0.t
+[ 	]+[0-9a-f]+:[ 	]+3c85e257[ 	]+th.vslide1down.vx[ 	]+v4,v8,a1,v0.t
+[ 	]+[0-9a-f]+:[ 	]+32860257[ 	]+th.vrgather.vv[ 	]+v4,v8,v12
+[ 	]+[0-9a-f]+:[ 	]+3285c257[ 	]+th.vrgather.vx[ 	]+v4,v8,a1
+[ 	]+[0-9a-f]+:[ 	]+32803257[ 	]+th.vrgather.vi[ 	]+v4,v8,0
+[ 	]+[0-9a-f]+:[ 	]+328fb257[ 	]+th.vrgather.vi[ 	]+v4,v8,31
+[ 	]+[0-9a-f]+:[ 	]+30860257[ 	]+th.vrgather.vv[ 	]+v4,v8,v12,v0.t
+[ 	]+[0-9a-f]+:[ 	]+3085c257[ 	]+th.vrgather.vx[ 	]+v4,v8,a1,v0.t
+[ 	]+[0-9a-f]+:[ 	]+30803257[ 	]+th.vrgather.vi[ 	]+v4,v8,0,v0.t
+[ 	]+[0-9a-f]+:[ 	]+308fb257[ 	]+th.vrgather.vi[ 	]+v4,v8,31,v0.t
+[ 	]+[0-9a-f]+:[ 	]+5e862257[ 	]+th.vcompress.vm[ 	]+v4,v8,v12
diff --git a/gas/testsuite/gas/riscv/x-thead-vector.s b/gas/testsuite/gas/riscv/x-thead-vector.s
index 1c1c27cb6d8..3a4dea38c8b 100644
--- a/gas/testsuite/gas/riscv/x-thead-vector.s
+++ b/gas/testsuite/gas/riscv/x-thead-vector.s
@@ -1686,3 +1686,41 @@
 	th.vmsof.m v4, v8, v0.t
 	th.viota.m v4, v8, v0.t
 	th.vid.v v4, v0.t
+
+	# Alias
+	th.vmv.x.s a0, v12
+
+	th.vext.x.v a0, v12, a2
+	th.vmv.s.x v4, a0
+
+	th.vfmv.f.s fa0, v8
+	th.vfmv.s.f v4, fa1
+
+	th.vslideup.vx v4, v8, a1
+	th.vslideup.vi v4, v8, 0
+	th.vslideup.vi v4, v8, 31
+	th.vslidedown.vx v4, v8, a1
+	th.vslidedown.vi v4, v8, 0
+	th.vslidedown.vi v4, v8, 31
+	th.vslideup.vx v4, v8, a1, v0.t
+	th.vslideup.vi v4, v8, 0, v0.t
+	th.vslideup.vi v4, v8, 31, v0.t
+	th.vslidedown.vx v4, v8, a1, v0.t
+	th.vslidedown.vi v4, v8, 0, v0.t
+	th.vslidedown.vi v4, v8, 31, v0.t
+
+	th.vslide1up.vx v4, v8, a1
+	th.vslide1down.vx v4, v8, a1
+	th.vslide1up.vx v4, v8, a1, v0.t
+	th.vslide1down.vx v4, v8, a1, v0.t
+
+	th.vrgather.vv v4, v8, v12
+	th.vrgather.vx v4, v8, a1
+	th.vrgather.vi v4, v8, 0
+	th.vrgather.vi v4, v8, 31
+	th.vrgather.vv v4, v8, v12, v0.t
+	th.vrgather.vx v4, v8, a1, v0.t
+	th.vrgather.vi v4, v8, 0, v0.t
+	th.vrgather.vi v4, v8, 31, v0.t
+
+	th.vcompress.vm v4, v8, v12
diff --git a/include/opcode/riscv-opc.h b/include/opcode/riscv-opc.h
index 9b4288c8ee2..1e417217b7d 100644
--- a/include/opcode/riscv-opc.h
+++ b/include/opcode/riscv-opc.h
@@ -2959,6 +2959,16 @@
 #define MASK_TH_VIOTAM 0xfc0ff07f
 #define MATCH_TH_VIDV 0x5808a057
 #define MASK_TH_VIDV 0xfdfff07f
+#define MATCH_TH_VMVXS 0x32002057
+#define MASK_TH_VMVXS 0xfe0ff07f
+#define MATCH_TH_VEXTXV 0x32002057
+#define MASK_TH_VEXTXV 0xfe00707f
+#define MATCH_TH_VMVSX 0x36006057
+#define MASK_TH_VMVSX 0xfff0707f
+#define MATCH_TH_VFMVFS 0x32001057
+#define MASK_TH_VFMVFS 0xfe0ff07f
+#define MATCH_TH_VFMVSF 0x36005057
+#define MASK_TH_VFMVSF 0xfff0707f
 /* Vendor-specific (Ventana Microsystems) XVentanaCondOps instructions */
 #define MATCH_VT_MASKC 0x607b
 #define MASK_VT_MASKC 0xfe00707f
diff --git a/opcodes/riscv-opc.c b/opcodes/riscv-opc.c
index b9b47cf849e..fcba49972f0 100644
--- a/opcodes/riscv-opc.c
+++ b/opcodes/riscv-opc.c
@@ -2879,6 +2879,21 @@ const struct riscv_opcode riscv_opcodes[] =
 {"th.vmsof.m",    0, INSN_CLASS_XTHEADVECTOR, "Vd,VtVm", MATCH_TH_VMSOFM, MASK_TH_VMSOFM, match_opcode, 0},
 {"th.viota.m",    0, INSN_CLASS_XTHEADVECTOR, "Vd,VtVm", MATCH_TH_VIOTAM, MASK_TH_VIOTAM, match_opcode, 0},
 {"th.vid.v",      0, INSN_CLASS_XTHEADVECTOR, "VdVm", MATCH_TH_VIDV, MASK_TH_VIDV, match_opcode, 0},
+{"th.vmv.x.s",    0, INSN_CLASS_XTHEADVECTOR, "d,Vt", MATCH_TH_VMVXS, MASK_TH_VMVXS, match_opcode, INSN_ALIAS},
+{"th.vext.x.v",   0, INSN_CLASS_XTHEADVECTOR, "d,Vt,s", MATCH_TH_VEXTXV, MASK_TH_VEXTXV, match_opcode, 0},
+{"th.vmv.s.x",    0, INSN_CLASS_XTHEADVECTOR, "Vd,s", MATCH_TH_VMVSX, MASK_TH_VMVSX, match_opcode, 0},
+{"th.vfmv.f.s",   0, INSN_CLASS_XTHEADVECTOR, "D,Vt", MATCH_TH_VFMVFS, MASK_TH_VFMVFS, match_opcode, 0},
+{"th.vfmv.s.f",   0, INSN_CLASS_XTHEADVECTOR, "Vd,S", MATCH_TH_VFMVSF, MASK_TH_VFMVSF, match_opcode, 0},
+{"th.vslideup.vx",0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,sVm", MATCH_VSLIDEUPVX, MASK_VSLIDEUPVX, match_opcode, 0},
+{"th.vslideup.vi",0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VjVm", MATCH_VSLIDEUPVI, MASK_VSLIDEUPVI, match_opcode, 0},
+{"th.vslidedown.vx",0,INSN_CLASS_XTHEADVECTOR, "Vd,Vt,sVm", MATCH_VSLIDEDOWNVX, MASK_VSLIDEDOWNVX, match_opcode, 0},
+{"th.vslidedown.vi",0,INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VjVm", MATCH_VSLIDEDOWNVI, MASK_VSLIDEDOWNVI, match_opcode, 0},
+{"th.vslide1up.vx",0 ,INSN_CLASS_XTHEADVECTOR, "Vd,Vt,sVm", MATCH_VSLIDE1UPVX, MASK_VSLIDE1UPVX, match_opcode, 0},
+{"th.vslide1down.vx",0,INSN_CLASS_XTHEADVECTOR, "Vd,Vt,sVm", MATCH_VSLIDE1DOWNVX, MASK_VSLIDE1DOWNVX, match_opcode, 0},
+{"th.vrgather.vv",0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VsVm", MATCH_VRGATHERVV, MASK_VRGATHERVV, match_opcode, 0},
+{"th.vrgather.vx",0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,sVm", MATCH_VRGATHERVX, MASK_VRGATHERVX, match_opcode, 0},
+{"th.vrgather.vi",0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,VjVm", MATCH_VRGATHERVI, MASK_VRGATHERVI, match_opcode, 0},
+{"th.vcompress.vm",0, INSN_CLASS_XTHEADVECTOR, "Vd,Vt,Vs", MATCH_VCOMPRESSVM, MASK_VCOMPRESSVM, match_opcode, 0},
 
 /* Vendor-specific (Ventana Microsystems) XVentanaCondOps instructions */
 {"vt.maskc",   64, INSN_CLASS_XVENTANACONDOPS, "d,s,t", MATCH_VT_MASKC, MASK_VT_MASKC, match_opcode, 0 },