diff --git a/llvm/include/llvm/IR/IntrinsicsRISCV.td b/llvm/include/llvm/IR/IntrinsicsRISCV.td
--- a/llvm/include/llvm/IR/IntrinsicsRISCV.td
+++ b/llvm/include/llvm/IR/IntrinsicsRISCV.td
@@ -601,6 +601,26 @@
                                  LLVMMatchType<1>]),
                     [NoCapture<ArgIndex<nf>>, IntrWriteMem]>, RISCVVIntrinsic;
 
+  // For indexed segment store
+  // Input: (value, pointer, offset, vl)
+  class RISCVISegStore<int nf>
+        : Intrinsic<[],
+                    !listconcat([llvm_anyvector_ty],
+                                !listsplat(LLVMMatchType<0>, !add(nf, -1)),
+                                [LLVMPointerToElt<0>, llvm_anyvector_ty,
+                                 llvm_anyint_ty]),
+                    [NoCapture<ArgIndex<nf>>, IntrWriteMem]>, RISCVVIntrinsic;
+  // For indexed segment store with mask
+  // Input: (value, pointer, offset, mask, vl)
+  class RISCVISegStoreMask<int nf>
+        : Intrinsic<[],
+                    !listconcat([llvm_anyvector_ty],
+                                !listsplat(LLVMMatchType<0>, !add(nf, -1)),
+                                [LLVMPointerToElt<0>, llvm_anyvector_ty,
+                                 LLVMScalarOrSameVectorWidth<0, llvm_i1_ty>,
+                                 llvm_anyint_ty]),
+                    [NoCapture<ArgIndex<nf>>, IntrWriteMem]>, RISCVVIntrinsic;
+
   multiclass RISCVUSLoad {
     def "int_riscv_" # NAME : RISCVUSLoad;
     def "int_riscv_" # NAME # "_mask" : RISCVUSLoadMask;
@@ -727,6 +747,10 @@
     def "int_riscv_" # NAME : RISCVSSegStore<nf>;
     def "int_riscv_" # NAME # "_mask" : RISCVSSegStoreMask<nf>;
   }
+  multiclass RISCVISegStore<int nf> {
+    def "int_riscv_" # NAME : RISCVISegStore<nf>;
+    def "int_riscv_" # NAME # "_mask" : RISCVISegStoreMask<nf>;
+  }
 
   defm vle : RISCVUSLoad;
   defm vleff : RISCVUSLoadFF;
@@ -1029,6 +1053,8 @@
     defm vluxseg # nf : RISCVISegLoad<nf>;
     defm vsseg # nf : RISCVUSSegStore<nf>;
     defm vssseg # nf : RISCVSSegStore<nf>;
+    defm vsoxseg # nf : RISCVISegStore<nf>;
+    defm vsuxseg # nf : RISCVISegStore<nf>;
   }
 
 } // TargetPrefix = "riscv"
diff --git a/llvm/lib/Target/RISCV/RISCVISelDAGToDAG.h b/llvm/lib/Target/RISCV/RISCVISelDAGToDAG.h
--- a/llvm/lib/Target/RISCV/RISCVISelDAGToDAG.h
+++ b/llvm/lib/Target/RISCV/RISCVISelDAGToDAG.h
@@ -61,6 +61,8 @@
   void selectVLXSEGMask(SDNode *Node, unsigned IntNo);
   void selectVSSEG(SDNode *Node, unsigned IntNo, bool IsStrided);
   void selectVSSEGMask(SDNode *Node, unsigned IntNo, bool IsStrided);
+  void selectVSXSEG(SDNode *Node, unsigned IntNo);
+  void selectVSXSEGMask(SDNode *Node, unsigned IntNo);
 
 // Include the pieces autogenerated from the target description.
 #include "RISCVGenDAGISel.inc"
diff --git a/llvm/lib/Target/RISCV/RISCVISelDAGToDAG.cpp b/llvm/lib/Target/RISCV/RISCVISelDAGToDAG.cpp
--- a/llvm/lib/Target/RISCV/RISCVISelDAGToDAG.cpp
+++ b/llvm/lib/Target/RISCV/RISCVISelDAGToDAG.cpp
@@ -359,6 +359,67 @@
   ReplaceNode(Node, Store);
 }
 
+void RISCVDAGToDAGISel::selectVSXSEG(SDNode *Node, unsigned IntNo) {
+  SDLoc DL(Node);
+  unsigned NF = Node->getNumOperands() - 5;
+  EVT VT = Node->getOperand(2)->getValueType(0);
+  unsigned ScalarSize = VT.getScalarSizeInBits();
+  MVT XLenVT = Subtarget->getXLenVT();
+  RISCVVLMUL LMUL = getLMUL(VT);
+  SDValue SEW = CurDAG->getTargetConstant(ScalarSize, DL, XLenVT);
+  SmallVector<SDValue, 8> Regs(Node->op_begin() + 2, Node->op_begin() + 2 + NF);
+  SDValue StoreVal = createTuple(*CurDAG, Regs, NF, LMUL);
+  SDValue Operands[] = {
+      StoreVal,
+      Node->getOperand(2 + NF), // Base pointer.
+      Node->getOperand(3 + NF), // Index.
+      Node->getOperand(4 + NF), // VL.
+      SEW,
+      Node->getOperand(0) // Chain.
+  };
+
+  EVT IndexVT = Node->getOperand(3 + NF)->getValueType(0);
+  RISCVVLMUL IndexLMUL = getLMUL(IndexVT);
+  unsigned IndexScalarSize = IndexVT.getScalarSizeInBits();
+  const RISCVZvlssegTable::RISCVZvlsseg *P = RISCVZvlssegTable::getPseudo(
+      IntNo, IndexScalarSize, static_cast<unsigned>(LMUL),
+      static_cast<unsigned>(IndexLMUL));
+  SDNode *Store =
+      CurDAG->getMachineNode(P->Pseudo, DL, Node->getValueType(0), Operands);
+  ReplaceNode(Node, Store);
+}
+
+void RISCVDAGToDAGISel::selectVSXSEGMask(SDNode *Node, unsigned IntNo) {
+  SDLoc DL(Node);
+  unsigned NF = Node->getNumOperands() - 6;
+  EVT VT = Node->getOperand(2)->getValueType(0);
+  unsigned ScalarSize = VT.getScalarSizeInBits();
+  MVT XLenVT = Subtarget->getXLenVT();
+  RISCVVLMUL LMUL = getLMUL(VT);
+  SDValue SEW = CurDAG->getTargetConstant(ScalarSize, DL, XLenVT);
+  SmallVector<SDValue, 8> Regs(Node->op_begin() + 2, Node->op_begin() + 2 + NF);
+  SDValue StoreVal = createTuple(*CurDAG, Regs, NF, LMUL);
+  SDValue Operands[] = {
+      StoreVal,
+      Node->getOperand(2 + NF), // Base pointer.
+      Node->getOperand(3 + NF), // Index.
+      Node->getOperand(4 + NF), // Mask.
+      Node->getOperand(5 + NF), // VL.
+      SEW,
+      Node->getOperand(0) // Chain.
+  };
+
+  EVT IndexVT = Node->getOperand(3 + NF)->getValueType(0);
+  RISCVVLMUL IndexLMUL = getLMUL(IndexVT);
+  unsigned IndexScalarSize = IndexVT.getScalarSizeInBits();
+  const RISCVZvlssegTable::RISCVZvlsseg *P = RISCVZvlssegTable::getPseudo(
+      IntNo, IndexScalarSize, static_cast<unsigned>(LMUL),
+      static_cast<unsigned>(IndexLMUL));
+  SDNode *Store =
+      CurDAG->getMachineNode(P->Pseudo, DL, Node->getValueType(0), Operands);
+  ReplaceNode(Node, Store);
+}
+
 void RISCVDAGToDAGISel::Select(SDNode *Node) {
   // If we have a custom node, we have already selected.
   if (Node->isMachineOpcode()) {
@@ -601,6 +662,40 @@
       selectVSSEGMask(Node, IntNo, /*IsStrided=*/true);
       return;
     }
+    case Intrinsic::riscv_vsoxseg2:
+    case Intrinsic::riscv_vsoxseg3:
+    case Intrinsic::riscv_vsoxseg4:
+    case Intrinsic::riscv_vsoxseg5:
+    case Intrinsic::riscv_vsoxseg6:
+    case Intrinsic::riscv_vsoxseg7:
+    case Intrinsic::riscv_vsoxseg8:
+    case Intrinsic::riscv_vsuxseg2:
+    case Intrinsic::riscv_vsuxseg3:
+    case Intrinsic::riscv_vsuxseg4:
+    case Intrinsic::riscv_vsuxseg5:
+    case Intrinsic::riscv_vsuxseg6:
+    case Intrinsic::riscv_vsuxseg7:
+    case Intrinsic::riscv_vsuxseg8: {
+      selectVSXSEG(Node, IntNo);
+      return;
+    }
+    case Intrinsic::riscv_vsoxseg2_mask:
+    case Intrinsic::riscv_vsoxseg3_mask:
+    case Intrinsic::riscv_vsoxseg4_mask:
+    case Intrinsic::riscv_vsoxseg5_mask:
+    case Intrinsic::riscv_vsoxseg6_mask:
+    case Intrinsic::riscv_vsoxseg7_mask:
+    case Intrinsic::riscv_vsoxseg8_mask:
+    case Intrinsic::riscv_vsuxseg2_mask:
+    case Intrinsic::riscv_vsuxseg3_mask:
+    case Intrinsic::riscv_vsuxseg4_mask:
+    case Intrinsic::riscv_vsuxseg5_mask:
+    case Intrinsic::riscv_vsuxseg6_mask:
+    case Intrinsic::riscv_vsuxseg7_mask:
+    case Intrinsic::riscv_vsuxseg8_mask: {
+      selectVSXSEGMask(Node, IntNo);
+      return;
+    }
     }
     break;
   }
diff --git a/llvm/lib/Target/RISCV/RISCVInstrInfoVPseudos.td b/llvm/lib/Target/RISCV/RISCVInstrInfoVPseudos.td
--- a/llvm/lib/Target/RISCV/RISCVInstrInfoVPseudos.td
+++ b/llvm/lib/Target/RISCV/RISCVInstrInfoVPseudos.td
@@ -461,7 +461,9 @@
              !subst("VSSEG", "vsseg",
              !subst("VSSSEG", "vssseg",
              !subst("VLOXSEG", "vloxseg",
-             !subst("VLUXSEG", "vluxseg", Upper))))));
+             !subst("VLUXSEG", "vluxseg",
+             !subst("VSOXSEG", "vsoxseg",
+             !subst("VSUXSEG", "vsuxseg", Upper))))))));
 }
 
 // Example: PseudoVLSEG2E32_V_M2 -> int_riscv_vlseg2
@@ -1172,6 +1174,39 @@
   let BaseInstr = !cast<Instruction>(PseudoToVInst<NAME>.VInst);
 }
 
+class VPseudoISegStoreNoMask<VReg ValClass, VReg IdxClass, bits<11> EEW, bits<3> LMUL>:
+      Pseudo<(outs),
+             (ins ValClass:$rd, GPR:$rs1, IdxClass: $index,
+                  GPR:$vl, ixlenimm:$sew),[]>,
+      RISCVVPseudo,
+      RISCVZvlsseg<PseudoToIntrinsic<NAME, false>.Intrinsic, EEW, VLMul, LMUL> {
+  let mayLoad = 0;
+  let mayStore = 1;
+  let hasSideEffects = 0;
+  let usesCustomInserter = 1;
+  let Uses = [VL, VTYPE];
+  let HasVLOp = 1;
+  let HasSEWOp = 1;
+  let HasDummyMask = 1;
+  let BaseInstr = !cast<Instruction>(PseudoToVInst<NAME>.VInst);
+}
+
+class VPseudoISegStoreMask<VReg ValClass, VReg IdxClass, bits<11> EEW, bits<3> LMUL>:
+      Pseudo<(outs),
+             (ins ValClass:$rd, GPR:$rs1, IdxClass: $index,
+                  VMaskOp:$vm, GPR:$vl, ixlenimm:$sew),[]>,
+      RISCVVPseudo,
+      RISCVZvlsseg<PseudoToIntrinsic<NAME, true>.Intrinsic, EEW, VLMul, LMUL> {
+  let mayLoad = 0;
+  let mayStore = 1;
+  let hasSideEffects = 0;
+  let usesCustomInserter = 1;
+  let Uses = [VL, VTYPE];
+  let HasVLOp = 1;
+  let HasSEWOp = 1;
+  let BaseInstr = !cast<Instruction>(PseudoToVInst<NAME>.VInst);
+}
+
 multiclass VPseudoUSLoad {
   foreach lmul = MxList.m in {
     defvar LInfo = lmul.MX;
@@ -1790,6 +1825,27 @@
   }
 }
 
+multiclass VPseudoISegStore {
+  foreach idx_eew = EEWList in {  // EEW for index argument.
+    foreach idx_lmul = MxSet<idx_eew>.m in {  // LMUL for index argument.
+      foreach val_lmul = MxList.m in {  // LMUL for the value.
+        defvar IdxLInfo = idx_lmul.MX;
+        defvar IdxVreg = idx_lmul.vrclass;
+        defvar ValLInfo = val_lmul.MX;
+        let VLMul = val_lmul.value in {
+          foreach nf = NFSet<val_lmul>.L in {
+            defvar ValVreg = SegRegClass<val_lmul, nf>.RC;
+            def nf # "EI" # idx_eew # "_V_" # IdxLInfo # "_" # ValLInfo :
+              VPseudoISegStoreNoMask<ValVreg, IdxVreg, idx_eew, idx_lmul.value>;
+            def nf # "EI" # idx_eew # "_V_" # IdxLInfo # "_" # ValLInfo # "_MASK" :
+              VPseudoISegStoreMask<ValVreg, IdxVreg, idx_eew, idx_lmul.value>;
+          }
+        }
+      }
+    }
+  }
+}
+
 //===----------------------------------------------------------------------===//
 // Helpers to define the intrinsic patterns.
 //===----------------------------------------------------------------------===//
@@ -3036,6 +3092,8 @@
 defm PseudoVLUXSEG : VPseudoISegLoad;
 defm PseudoVSSEG : VPseudoUSSegStore;
 defm PseudoVSSSEG : VPseudoSSegStore;
+defm PseudoVSOXSEG : VPseudoISegStore;
+defm PseudoVSUXSEG : VPseudoISegStore;
 
 //===----------------------------------------------------------------------===//
 // 8. Vector AMO Operations