[RISCV] Split zvlsseg searchable table into 4 separate tables. Index by properties rather than intrinsic ID.

Intrinsic ID is a 32-bit value which made each row of the table 4
byte aligned. The remaining fields used 5 bytes. This meant 3 bytes
of padding per row.

This patch breaks the table into 4 separate tables and indexes them
by properties we know about the intrinsic. NF, masked,
strided, ordered, etc. The indexed load/store tables have no
padding in their rows now.

All together this reduces the size of llc binary by ~28K.

I'm considering adding similar tables for isel of non-segment
load/store as well to cut down the size of the isel table and
probably improve our isel performance. Those tables would need to
indexed from intrinsics, IR loads/stores, gathers/scatters, and
RISCVISD opcodes. So having a table that can be indexed without using
intrinsic ID is more flexible.

Reviewed By: HsiangKai

Differential Revision: https://reviews.llvm.org/D96894

llvm/lib/Target/RISCV/RISCVISelDAGToDAG.cpp

@@ -25,21 +25,15 @@ using namespace llvm;
 
 #define DEBUG_TYPE "riscv-isel"
 
-namespace RISCVZvlssegTable {
+namespace llvm {
-struct RISCVZvlsseg {
+namespace RISCV {
-  unsigned IntrinsicID;
+#define GET_RISCVVSSEGTable_IMPL
-  uint8_t SEW;
+#define GET_RISCVVLSEGTable_IMPL
-  uint8_t LMUL;
+#define GET_RISCVVLXSEGTable_IMPL
-  uint8_t IndexLMUL;
+#define GET_RISCVVSXSEGTable_IMPL
-  uint16_t Pseudo;
-};
-
-using namespace RISCV;
-
-#define GET_RISCVZvlssegTable_IMPL
 #include "RISCVGenSearchableTables.inc"
-
+} // namespace RISCV
-} // namespace RISCVZvlssegTable
+} // namespace llvm
 
 void RISCVDAGToDAGISel::PostprocessISelDAG() {
   doPeepholeLoadStoreADDI();
@@ -184,7 +178,7 @@ static SDValue createTuple(SelectionDAG &CurDAG, ArrayRef<SDValue> Regs,
   }
 }
 
-void RISCVDAGToDAGISel::selectVLSEG(SDNode *Node, unsigned IntNo, bool IsMasked,
+void RISCVDAGToDAGISel::selectVLSEG(SDNode *Node, bool IsMasked,
                                     bool IsStrided) {
   SDLoc DL(Node);
   unsigned NF = Node->getNumValues() - 1;
@@ -210,9 +204,9 @@ void RISCVDAGToDAGISel::selectVLSEG(SDNode *Node, unsigned IntNo, bool IsMasked,
   Operands.push_back(Node->getOperand(CurOp++));   // VL.
   Operands.push_back(SEW);
   Operands.push_back(Node->getOperand(0)); // Chain.
-  const RISCVZvlssegTable::RISCVZvlsseg *P = RISCVZvlssegTable::getPseudo(
+  const RISCV::VLSEGPseudo *P =
-      IntNo, ScalarSize, static_cast<unsigned>(LMUL),
+      RISCV::getVLSEGPseudo(NF, IsMasked, IsStrided, /*FF*/ false, ScalarSize,
-      static_cast<unsigned>(RISCVVLMUL::LMUL_1));
+                            static_cast<unsigned>(LMUL));
   SDNode *Load =
       CurDAG->getMachineNode(P->Pseudo, DL, MVT::Untyped, MVT::Other, Operands);
   SDValue SuperReg = SDValue(Load, 0);
@@ -227,7 +221,6 @@ void RISCVDAGToDAGISel::selectVLSEG(SDNode *Node, unsigned IntNo, bool IsMasked,
 
 void RISCVDAGToDAGISel::selectVLSEGFF(SDNode *Node, bool IsMasked) {
   SDLoc DL(Node);
-  unsigned IntNo = cast<ConstantSDNode>(Node->getOperand(1))->getZExtValue();
   unsigned NF = Node->getNumValues() - 2; // Do not count VL and Chain.
   MVT VT = Node->getSimpleValueType(0);
   MVT XLenVT = Subtarget->getXLenVT();
@@ -250,9 +243,9 @@ void RISCVDAGToDAGISel::selectVLSEGFF(SDNode *Node, bool IsMasked) {
   Operands.push_back(Node->getOperand(CurOp++));   // VL.
   Operands.push_back(SEW);
   Operands.push_back(Node->getOperand(0)); // Chain.
-  const RISCVZvlssegTable::RISCVZvlsseg *P = RISCVZvlssegTable::getPseudo(
+  const RISCV::VLSEGPseudo *P =
-      IntNo, ScalarSize, static_cast<unsigned>(LMUL),
+      RISCV::getVLSEGPseudo(NF, IsMasked, /*Strided*/ false, /*FF*/ true,
-      static_cast<unsigned>(RISCVVLMUL::LMUL_1));
+                            ScalarSize, static_cast<unsigned>(LMUL));
   SDNode *Load = CurDAG->getMachineNode(P->Pseudo, DL, MVT::Untyped, MVT::Other,
                                         MVT::Glue, Operands);
   SDNode *ReadVL = CurDAG->getMachineNode(RISCV::PseudoReadVL, DL, XLenVT,
@@ -269,8 +262,8 @@ void RISCVDAGToDAGISel::selectVLSEGFF(SDNode *Node, bool IsMasked) {
   CurDAG->RemoveDeadNode(Node);
 }
 
-void RISCVDAGToDAGISel::selectVLXSEG(SDNode *Node, unsigned IntNo,
+void RISCVDAGToDAGISel::selectVLXSEG(SDNode *Node, bool IsMasked,
-                                     bool IsMasked) {
+                                     bool IsOrdered) {
   SDLoc DL(Node);
   unsigned NF = Node->getNumValues() - 1;
   MVT VT = Node->getSimpleValueType(0);
@@ -298,8 +291,8 @@ void RISCVDAGToDAGISel::selectVLXSEG(SDNode *Node, unsigned IntNo,
 
   RISCVVLMUL IndexLMUL = getLMUL(IndexVT);
   unsigned IndexScalarSize = IndexVT.getScalarSizeInBits();
-  const RISCVZvlssegTable::RISCVZvlsseg *P = RISCVZvlssegTable::getPseudo(
+  const RISCV::VLXSEGPseudo *P = RISCV::getVLXSEGPseudo(
-      IntNo, IndexScalarSize, static_cast<unsigned>(LMUL),
+      NF, IsMasked, IsOrdered, IndexScalarSize, static_cast<unsigned>(LMUL),
       static_cast<unsigned>(IndexLMUL));
   SDNode *Load =
       CurDAG->getMachineNode(P->Pseudo, DL, MVT::Untyped, MVT::Other, Operands);
@@ -313,7 +306,7 @@ void RISCVDAGToDAGISel::selectVLXSEG(SDNode *Node, unsigned IntNo,
   CurDAG->RemoveDeadNode(Node);
 }
 
-void RISCVDAGToDAGISel::selectVSSEG(SDNode *Node, unsigned IntNo, bool IsMasked,
+void RISCVDAGToDAGISel::selectVSSEG(SDNode *Node, bool IsMasked,
                                     bool IsStrided) {
   SDLoc DL(Node);
   unsigned NF = Node->getNumOperands() - 4;
@@ -339,16 +332,15 @@ void RISCVDAGToDAGISel::selectVSSEG(SDNode *Node, unsigned IntNo, bool IsMasked,
   Operands.push_back(Node->getOperand(CurOp++));   // VL.
   Operands.push_back(SEW);
   Operands.push_back(Node->getOperand(0)); // Chain.
-  const RISCVZvlssegTable::RISCVZvlsseg *P = RISCVZvlssegTable::getPseudo(
+  const RISCV::VSSEGPseudo *P = RISCV::getVSSEGPseudo(
-      IntNo, ScalarSize, static_cast<unsigned>(LMUL),
+      NF, IsMasked, IsStrided, ScalarSize, static_cast<unsigned>(LMUL));
-      static_cast<unsigned>(RISCVVLMUL::LMUL_1));
   SDNode *Store =
       CurDAG->getMachineNode(P->Pseudo, DL, Node->getValueType(0), Operands);
   ReplaceNode(Node, Store);
 }
 
-void RISCVDAGToDAGISel::selectVSXSEG(SDNode *Node, unsigned IntNo,
+void RISCVDAGToDAGISel::selectVSXSEG(SDNode *Node, bool IsMasked,
-                                     bool IsMasked) {
+                                     bool IsOrdered) {
   SDLoc DL(Node);
   unsigned NF = Node->getNumOperands() - 5;
   if (IsMasked)
@@ -374,8 +366,8 @@ void RISCVDAGToDAGISel::selectVSXSEG(SDNode *Node, unsigned IntNo,
 
   RISCVVLMUL IndexLMUL = getLMUL(IndexVT);
   unsigned IndexScalarSize = IndexVT.getScalarSizeInBits();
-  const RISCVZvlssegTable::RISCVZvlsseg *P = RISCVZvlssegTable::getPseudo(
+  const RISCV::VSXSEGPseudo *P = RISCV::getVSXSEGPseudo(
-      IntNo, IndexScalarSize, static_cast<unsigned>(LMUL),
+      NF, IsMasked, IsOrdered, IndexScalarSize, static_cast<unsigned>(LMUL),
       static_cast<unsigned>(IndexLMUL));
   SDNode *Store =
       CurDAG->getMachineNode(P->Pseudo, DL, Node->getValueType(0), Operands);
@@ -575,7 +567,7 @@ void RISCVDAGToDAGISel::Select(SDNode *Node) {
     case Intrinsic::riscv_vlseg6:
     case Intrinsic::riscv_vlseg7:
     case Intrinsic::riscv_vlseg8: {
-      selectVLSEG(Node, IntNo, /*IsMasked*/ false, /*IsStrided*/ false);
+      selectVLSEG(Node, /*IsMasked*/ false, /*IsStrided*/ false);
       return;
     }
     case Intrinsic::riscv_vlseg2_mask:
@@ -585,7 +577,7 @@ void RISCVDAGToDAGISel::Select(SDNode *Node) {
     case Intrinsic::riscv_vlseg6_mask:
     case Intrinsic::riscv_vlseg7_mask:
     case Intrinsic::riscv_vlseg8_mask: {
-      selectVLSEG(Node, IntNo, /*IsMasked*/ true, /*IsStrided*/ false);
+      selectVLSEG(Node, /*IsMasked*/ true, /*IsStrided*/ false);
       return;
     }
     case Intrinsic::riscv_vlsseg2:
@@ -595,7 +587,7 @@ void RISCVDAGToDAGISel::Select(SDNode *Node) {
     case Intrinsic::riscv_vlsseg6:
     case Intrinsic::riscv_vlsseg7:
     case Intrinsic::riscv_vlsseg8: {
-      selectVLSEG(Node, IntNo, /*IsMasked*/ false, /*IsStrided*/ true);
+      selectVLSEG(Node, /*IsMasked*/ false, /*IsStrided*/ true);
       return;
     }
     case Intrinsic::riscv_vlsseg2_mask:
@@ -605,7 +597,7 @@ void RISCVDAGToDAGISel::Select(SDNode *Node) {
     case Intrinsic::riscv_vlsseg6_mask:
     case Intrinsic::riscv_vlsseg7_mask:
     case Intrinsic::riscv_vlsseg8_mask: {
-      selectVLSEG(Node, IntNo, /*IsMasked*/ true, /*IsStrided*/ true);
+      selectVLSEG(Node, /*IsMasked*/ true, /*IsStrided*/ true);
       return;
     }
     case Intrinsic::riscv_vloxseg2:
@@ -615,16 +607,17 @@ void RISCVDAGToDAGISel::Select(SDNode *Node) {
     case Intrinsic::riscv_vloxseg6:
     case Intrinsic::riscv_vloxseg7:
     case Intrinsic::riscv_vloxseg8:
+      selectVLXSEG(Node, /*IsMasked*/ false, /*IsOrdered*/ true);
+      return;
     case Intrinsic::riscv_vluxseg2:
     case Intrinsic::riscv_vluxseg3:
     case Intrinsic::riscv_vluxseg4:
     case Intrinsic::riscv_vluxseg5:
     case Intrinsic::riscv_vluxseg6:
     case Intrinsic::riscv_vluxseg7:
-    case Intrinsic::riscv_vluxseg8: {
+    case Intrinsic::riscv_vluxseg8:
-      selectVLXSEG(Node, IntNo, /*IsMasked*/ false);
+      selectVLXSEG(Node, /*IsMasked*/ false, /*IsOrdered*/ false);
       return;
-    }
     case Intrinsic::riscv_vloxseg2_mask:
     case Intrinsic::riscv_vloxseg3_mask:
     case Intrinsic::riscv_vloxseg4_mask:
@@ -632,16 +625,17 @@ void RISCVDAGToDAGISel::Select(SDNode *Node) {
     case Intrinsic::riscv_vloxseg6_mask:
     case Intrinsic::riscv_vloxseg7_mask:
     case Intrinsic::riscv_vloxseg8_mask:
+      selectVLXSEG(Node, /*IsMasked*/ true, /*IsOrdered*/ true);
+      return;
     case Intrinsic::riscv_vluxseg2_mask:
     case Intrinsic::riscv_vluxseg3_mask:
     case Intrinsic::riscv_vluxseg4_mask:
     case Intrinsic::riscv_vluxseg5_mask:
     case Intrinsic::riscv_vluxseg6_mask:
     case Intrinsic::riscv_vluxseg7_mask:
-    case Intrinsic::riscv_vluxseg8_mask: {
+    case Intrinsic::riscv_vluxseg8_mask:
-      selectVLXSEG(Node, IntNo, /*IsMasked*/ true);
+      selectVLXSEG(Node, /*IsMasked*/ true, /*IsOrdered*/ false);
       return;
-    }
     case Intrinsic::riscv_vlseg8ff:
     case Intrinsic::riscv_vlseg7ff:
     case Intrinsic::riscv_vlseg6ff:
@@ -675,7 +669,7 @@ void RISCVDAGToDAGISel::Select(SDNode *Node) {
     case Intrinsic::riscv_vsseg6:
     case Intrinsic::riscv_vsseg7:
     case Intrinsic::riscv_vsseg8: {
-      selectVSSEG(Node, IntNo, /*IsMasked*/ false, /*IsStrided*/ false);
+      selectVSSEG(Node, /*IsMasked*/ false, /*IsStrided*/ false);
       return;
     }
     case Intrinsic::riscv_vsseg2_mask:
@@ -685,7 +679,7 @@ void RISCVDAGToDAGISel::Select(SDNode *Node) {
     case Intrinsic::riscv_vsseg6_mask:
     case Intrinsic::riscv_vsseg7_mask:
     case Intrinsic::riscv_vsseg8_mask: {
-      selectVSSEG(Node, IntNo, /*IsMasked*/ true, /*IsStrided*/ false);
+      selectVSSEG(Node, /*IsMasked*/ true, /*IsStrided*/ false);
       return;
     }
     case Intrinsic::riscv_vssseg2:
@@ -695,7 +689,7 @@ void RISCVDAGToDAGISel::Select(SDNode *Node) {
     case Intrinsic::riscv_vssseg6:
     case Intrinsic::riscv_vssseg7:
     case Intrinsic::riscv_vssseg8: {
-      selectVSSEG(Node, IntNo, /*IsMasked*/ false, /*IsStrided*/ true);
+      selectVSSEG(Node, /*IsMasked*/ false, /*IsStrided*/ true);
       return;
     }
     case Intrinsic::riscv_vssseg2_mask:
@@ -705,7 +699,7 @@ void RISCVDAGToDAGISel::Select(SDNode *Node) {
     case Intrinsic::riscv_vssseg6_mask:
     case Intrinsic::riscv_vssseg7_mask:
     case Intrinsic::riscv_vssseg8_mask: {
-      selectVSSEG(Node, IntNo, /*IsMasked*/ true, /*IsStrided*/ true);
+      selectVSSEG(Node, /*IsMasked*/ true, /*IsStrided*/ true);
       return;
     }
     case Intrinsic::riscv_vsoxseg2:
@@ -715,16 +709,17 @@ void RISCVDAGToDAGISel::Select(SDNode *Node) {
     case Intrinsic::riscv_vsoxseg6:
     case Intrinsic::riscv_vsoxseg7:
     case Intrinsic::riscv_vsoxseg8:
+      selectVSXSEG(Node, /*IsMasked*/ false, /*IsOrdered*/ true);
+      return;
     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: {
+    case Intrinsic::riscv_vsuxseg8:
-      selectVSXSEG(Node, IntNo, /*IsMasked*/ false);
+      selectVSXSEG(Node, /*IsMasked*/ false, /*IsOrdered*/ false);
       return;
-    }
     case Intrinsic::riscv_vsoxseg2_mask:
     case Intrinsic::riscv_vsoxseg3_mask:
     case Intrinsic::riscv_vsoxseg4_mask:
@@ -732,17 +727,18 @@ void RISCVDAGToDAGISel::Select(SDNode *Node) {
     case Intrinsic::riscv_vsoxseg6_mask:
     case Intrinsic::riscv_vsoxseg7_mask:
     case Intrinsic::riscv_vsoxseg8_mask:
+      selectVSXSEG(Node, /*IsMasked*/ true, /*IsOrdered*/ true);
+      return;
     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: {
+    case Intrinsic::riscv_vsuxseg8_mask:
-      selectVSXSEG(Node, IntNo, /*IsMasked*/ true);
+      selectVSXSEG(Node, /*IsMasked*/ true, /*IsOrdered*/ false);
       return;
     }
-    }
     break;
   }
   case ISD::BITCAST:

llvm/lib/Target/RISCV/RISCVISelDAGToDAG.h

@@ -73,11 +73,11 @@ public:
     return selectRVVUimm5(N, Width, Imm);
   }
 
-  void selectVLSEG(SDNode *Node, unsigned IntNo, bool IsMasked, bool IsStrided);
+  void selectVLSEG(SDNode *Node, bool IsMasked, bool IsStrided);
   void selectVLSEGFF(SDNode *Node, bool IsMasked);
-  void selectVLXSEG(SDNode *Node, unsigned IntNo, bool IsMasked);
+  void selectVLXSEG(SDNode *Node, bool IsMasked, bool IsOrdered);
-  void selectVSSEG(SDNode *Node, unsigned IntNo, bool IsMasked, bool IsStrided);
+  void selectVSSEG(SDNode *Node, bool IsMasked, bool IsStrided);
-  void selectVSXSEG(SDNode *Node, unsigned IntNo, bool IsMasked);
+  void selectVSXSEG(SDNode *Node, bool IsMasked, bool IsOrdered);
 
 // Include the pieces autogenerated from the target description.
 #include "RISCVGenDAGISel.inc"
@@ -85,6 +85,54 @@ public:
 private:
   void doPeepholeLoadStoreADDI();
 };
-}
+
+namespace RISCV {
+struct VLSEGPseudo {
+  uint8_t NF;
+  uint8_t Masked;
+  uint8_t Strided;
+  uint8_t FF;
+  uint8_t SEW;
+  uint8_t LMUL;
+  uint16_t Pseudo;
+};
+
+struct VLXSEGPseudo {
+  uint8_t NF;
+  uint8_t Masked;
+  uint8_t Ordered;
+  uint8_t SEW;
+  uint8_t LMUL;
+  uint8_t IndexLMUL;
+  uint16_t Pseudo;
+};
+
+struct VSSEGPseudo {
+  uint8_t NF;
+  uint8_t Masked;
+  uint8_t Strided;
+  uint8_t SEW;
+  uint8_t LMUL;
+  uint16_t Pseudo;
+};
+
+struct VSXSEGPseudo {
+  uint8_t NF;
+  uint8_t Masked;
+  uint8_t Ordered;
+  uint8_t SEW;
+  uint8_t LMUL;
+  uint8_t IndexLMUL;
+  uint16_t Pseudo;
+};
+
+#define GET_RISCVVSSEGTable_DECL
+#define GET_RISCVVLSEGTable_DECL
+#define GET_RISCVVLXSEGTable_DECL
+#define GET_RISCVVSXSEGTable_DECL
+#include "RISCVGenSearchableTables.inc"
+} // namespace RISCV
+
+} // namespace llvm
 
 #endif

llvm/lib/Target/RISCV/RISCVInstrInfoVPseudos.td

@@ -413,19 +413,75 @@ def RISCVVIntrinsicsTable : GenericTable {
   let PrimaryKeyName = "getRISCVVIntrinsicInfo";
 }
 
-class RISCVZvlsseg<string IntrName, bits<7> S, bits<3> L, bits<3> IL = V_M1.value> {
+class RISCVVLSEG<bits<4> N, bit M, bit Str, bit F, bits<7> S, bits<3> L> {
-  Intrinsic IntrinsicID = !cast<Intrinsic>(IntrName);
+  bits<4> NF = N;
+  bits<1> Masked = M;
+  bits<1> Strided = Str;
+  bits<1> FF = F;
+  bits<7> SEW = S;
+  bits<3> LMUL = L;
+  Pseudo Pseudo = !cast<Pseudo>(NAME);
+}
+
+def RISCVVLSEGTable : GenericTable {
+  let FilterClass = "RISCVVLSEG";
+  let CppTypeName = "VLSEGPseudo";
+  let Fields = ["NF", "Masked", "Strided", "FF", "SEW", "LMUL", "Pseudo"];
+  let PrimaryKey = ["NF", "Masked", "Strided", "FF", "SEW", "LMUL"];
+  let PrimaryKeyName = "getVLSEGPseudo";
+}
+
+class RISCVVLXSEG<bits<4> N, bit M, bit O, bits<7> S, bits<3> L, bits<3> IL> {
+  bits<4> NF = N;
+  bits<1> Masked = M;
+  bits<1> Ordered = O;
   bits<7> SEW = S;
   bits<3> LMUL = L;
   bits<3> IndexLMUL = IL;
   Pseudo Pseudo = !cast<Pseudo>(NAME);
 }
 
-def RISCVZvlssegTable : GenericTable {
+def RISCVVLXSEGTable : GenericTable {
-  let FilterClass = "RISCVZvlsseg";
+  let FilterClass = "RISCVVLXSEG";
-  let Fields = ["IntrinsicID", "SEW", "LMUL", "IndexLMUL", "Pseudo"];
+  let CppTypeName = "VLXSEGPseudo";
-  let PrimaryKey = ["IntrinsicID", "SEW", "LMUL", "IndexLMUL"];
+  let Fields = ["NF", "Masked", "Ordered", "SEW", "LMUL", "IndexLMUL", "Pseudo"];
-  let PrimaryKeyName = "getPseudo";
+  let PrimaryKey = ["NF", "Masked", "Ordered", "SEW", "LMUL", "IndexLMUL"];
+  let PrimaryKeyName = "getVLXSEGPseudo";
+}
+
+class RISCVVSSEG<bits<4> N, bit M, bit Str, bits<7> S, bits<3> L> {
+  bits<4> NF = N;
+  bits<1> Masked = M;
+  bits<1> Strided = Str;
+  bits<7> SEW = S;
+  bits<3> LMUL = L;
+  Pseudo Pseudo = !cast<Pseudo>(NAME);
+}
+
+def RISCVVSSEGTable : GenericTable {
+  let FilterClass = "RISCVVSSEG";
+  let CppTypeName = "VSSEGPseudo";
+  let Fields = ["NF", "Masked", "Strided", "SEW", "LMUL", "Pseudo"];
+  let PrimaryKey = ["NF", "Masked", "Strided", "SEW", "LMUL"];
+  let PrimaryKeyName = "getVSSEGPseudo";
+}
+
+class RISCVVSXSEG<bits<4> N, bit M, bit O, bits<7> S, bits<3> L, bits<3> IL> {
+  bits<4> NF = N;
+  bits<1> Masked = M;
+  bits<1> Ordered = O;
+  bits<7> SEW = S;
+  bits<3> LMUL = L;
+  bits<3> IndexLMUL = IL;
+  Pseudo Pseudo = !cast<Pseudo>(NAME);
+}
+
+def RISCVVSXSEGTable : GenericTable {
+  let FilterClass = "RISCVVSXSEG";
+  let CppTypeName = "VSXSEGPseudo";
+  let Fields = ["NF", "Masked", "Ordered", "SEW", "LMUL", "IndexLMUL", "Pseudo"];
+  let PrimaryKey = ["NF", "Masked", "Ordered", "SEW", "LMUL", "IndexLMUL"];
+  let PrimaryKeyName = "getVSXSEGPseudo";
 }
 
 //===----------------------------------------------------------------------===//
@@ -455,35 +511,6 @@ class PseudoToVInst<string PseudoInst> {
                  !subst("Pseudo", "", PseudoInst))))))))))))))))))));
 }
 
-class ToLowerCase<string Upper> {
-  string L = !subst("FF", "ff",
-             !subst("VLSEG", "vlseg",
-             !subst("VLSSEG", "vlsseg",
-             !subst("VSSEG", "vsseg",
-             !subst("VSSSEG", "vssseg",
-             !subst("VLOXSEG", "vloxseg",
-             !subst("VLUXSEG", "vluxseg",
-             !subst("VSOXSEG", "vsoxseg",
-             !subst("VSUXSEG", "vsuxseg", Upper)))))))));
-}
-
-// Example: PseudoVLSEG2E32_V_M2 -> int_riscv_vlseg2
-// Example: PseudoVLSEG2E32_V_M2_MASK -> int_riscv_vlseg2_mask
-class PseudoToIntrinsic<string PseudoInst, bit IsMasked> {
-  string Intrinsic = !strconcat("int_riscv_",
-                        ToLowerCase<
-                        !subst("E8", "",
-                        !subst("E16", "",
-                        !subst("E32", "",
-                        !subst("E64", "",
-                        !subst("EI8", "",
-                        !subst("EI16", "",
-                        !subst("EI32", "",
-                        !subst("EI64", "",
-                        !subst("_V", "", PseudoToVInst<PseudoInst>.VInst)))))))))>.L,
-                        !if(IsMasked, "_mask", ""));
-}
-
 // The destination vector register group for a masked vector instruction cannot
 // overlap the source mask register (v0), unless the destination vector register
 // is being written with a mask value (e.g., comparisons) or the scalar result
@@ -1013,11 +1040,11 @@ multiclass VPseudoAMO {
     defm "EI" # eew : VPseudoAMOEI<eew>;
 }
 
-class VPseudoUSSegLoadNoMask<VReg RetClass, bits<7> EEW>:
+class VPseudoUSSegLoadNoMask<VReg RetClass, bits<7> EEW, bits<4> NF, bit isFF>:
       Pseudo<(outs RetClass:$rd),
              (ins GPR:$rs1, GPR:$vl, ixlenimm:$sew),[]>,
       RISCVVPseudo,
-      RISCVZvlsseg<PseudoToIntrinsic<NAME, false>.Intrinsic, EEW, VLMul> {
+      RISCVVLSEG<NF, /*Masked*/0, /*Strided*/0, /*FF*/isFF, EEW, VLMul> {
   let mayLoad = 1;
   let mayStore = 0;
   let hasSideEffects = 0;
@@ -1029,12 +1056,12 @@ class VPseudoUSSegLoadNoMask<VReg RetClass, bits<7> EEW>:
   let BaseInstr = !cast<Instruction>(PseudoToVInst<NAME>.VInst);
 }
 
-class VPseudoUSSegLoadMask<VReg RetClass, bits<7> EEW>:
+class VPseudoUSSegLoadMask<VReg RetClass, bits<7> EEW, bits<4> NF, bit isFF>:
       Pseudo<(outs GetVRegNoV0<RetClass>.R:$rd),
              (ins GetVRegNoV0<RetClass>.R:$merge, GPR:$rs1,
                   VMaskOp:$vm, GPR:$vl, ixlenimm:$sew),[]>,
       RISCVVPseudo,
-      RISCVZvlsseg<PseudoToIntrinsic<NAME, true>.Intrinsic, EEW, VLMul> {
+      RISCVVLSEG<NF, /*Masked*/1, /*Strided*/0, /*FF*/isFF, EEW, VLMul> {
   let mayLoad = 1;
   let mayStore = 0;
   let hasSideEffects = 0;
@@ -1047,11 +1074,12 @@ class VPseudoUSSegLoadMask<VReg RetClass, bits<7> EEW>:
   let BaseInstr = !cast<Instruction>(PseudoToVInst<NAME>.VInst);
 }
 
-class VPseudoSSegLoadNoMask<VReg RetClass, bits<7> EEW>:
+class VPseudoSSegLoadNoMask<VReg RetClass, bits<7> EEW, bits<4> NF>:
       Pseudo<(outs RetClass:$rd),
              (ins GPR:$rs1, GPR:$offset, GPR:$vl, ixlenimm:$sew),[]>,
       RISCVVPseudo,
-      RISCVZvlsseg<PseudoToIntrinsic<NAME, false>.Intrinsic, EEW, VLMul> {
+      RISCVVLSEG<NF, /*Masked*/0, /*Strided*/1, /*FF*/0, EEW, VLMul> {
+  let mayLoad = 1;
   let mayLoad = 1;
   let mayStore = 0;
   let hasSideEffects = 0;
@@ -1063,12 +1091,12 @@ class VPseudoSSegLoadNoMask<VReg RetClass, bits<7> EEW>:
   let BaseInstr = !cast<Instruction>(PseudoToVInst<NAME>.VInst);
 }
 
-class VPseudoSSegLoadMask<VReg RetClass, bits<7> EEW>:
+class VPseudoSSegLoadMask<VReg RetClass, bits<7> EEW, bits<4> NF>:
       Pseudo<(outs GetVRegNoV0<RetClass>.R:$rd),
              (ins GetVRegNoV0<RetClass>.R:$merge, GPR:$rs1,
                   GPR:$offset, VMaskOp:$vm, GPR:$vl, ixlenimm:$sew),[]>,
       RISCVVPseudo,
-      RISCVZvlsseg<PseudoToIntrinsic<NAME, true>.Intrinsic, EEW, VLMul> {
+      RISCVVLSEG<NF, /*Masked*/1, /*Strided*/1, /*FF*/0, EEW, VLMul> {
   let mayLoad = 1;
   let mayStore = 0;
   let hasSideEffects = 0;
@@ -1081,11 +1109,12 @@ class VPseudoSSegLoadMask<VReg RetClass, bits<7> EEW>:
   let BaseInstr = !cast<Instruction>(PseudoToVInst<NAME>.VInst);
 }
 
-class VPseudoISegLoadNoMask<VReg RetClass, VReg IdxClass, bits<7> EEW, bits<3> LMUL>:
+class VPseudoISegLoadNoMask<VReg RetClass, VReg IdxClass, bits<7> EEW, bits<3> LMUL,
+                            bits<4> NF, bit Ordered>:
       Pseudo<(outs RetClass:$rd),
              (ins GPR:$rs1, IdxClass:$offset, GPR:$vl, ixlenimm:$sew),[]>,
       RISCVVPseudo,
-      RISCVZvlsseg<PseudoToIntrinsic<NAME, false>.Intrinsic, EEW, VLMul, LMUL> {
+      RISCVVLXSEG<NF, /*Masked*/0, Ordered, EEW, VLMul, LMUL> {
   let mayLoad = 1;
   let mayStore = 0;
   let hasSideEffects = 0;
@@ -1100,12 +1129,13 @@ class VPseudoISegLoadNoMask<VReg RetClass, VReg IdxClass, bits<7> EEW, bits<3> L
   let BaseInstr = !cast<Instruction>(PseudoToVInst<NAME>.VInst);
 }
 
-class VPseudoISegLoadMask<VReg RetClass, VReg IdxClass, bits<7> EEW, bits<3> LMUL>:
+class VPseudoISegLoadMask<VReg RetClass, VReg IdxClass, bits<7> EEW, bits<3> LMUL,
+                          bits<4> NF, bit Ordered>:
       Pseudo<(outs GetVRegNoV0<RetClass>.R:$rd),
              (ins GetVRegNoV0<RetClass>.R:$merge, GPR:$rs1,
                   IdxClass:$offset, VMaskOp:$vm, GPR:$vl, ixlenimm:$sew),[]>,
       RISCVVPseudo,
-      RISCVZvlsseg<PseudoToIntrinsic<NAME, true>.Intrinsic, EEW, VLMul, LMUL> {
+      RISCVVLXSEG<NF, /*Masked*/1, Ordered, EEW, VLMul, LMUL> {
   let mayLoad = 1;
   let mayStore = 0;
   let hasSideEffects = 0;
@@ -1120,11 +1150,11 @@ class VPseudoISegLoadMask<VReg RetClass, VReg IdxClass, bits<7> EEW, bits<3> LMU
   let BaseInstr = !cast<Instruction>(PseudoToVInst<NAME>.VInst);
 }
 
-class VPseudoUSSegStoreNoMask<VReg ValClass, bits<7> EEW>:
+class VPseudoUSSegStoreNoMask<VReg ValClass, bits<7> EEW, bits<4> NF>:
       Pseudo<(outs),
              (ins ValClass:$rd, GPR:$rs1, GPR:$vl, ixlenimm:$sew),[]>,
       RISCVVPseudo,
-      RISCVZvlsseg<PseudoToIntrinsic<NAME, false>.Intrinsic, EEW, VLMul> {
+      RISCVVSSEG<NF, /*Masked*/0, /*Strided*/0, EEW, VLMul> {
   let mayLoad = 0;
   let mayStore = 1;
   let hasSideEffects = 0;
@@ -1136,12 +1166,12 @@ class VPseudoUSSegStoreNoMask<VReg ValClass, bits<7> EEW>:
   let BaseInstr = !cast<Instruction>(PseudoToVInst<NAME>.VInst);
 }
 
-class VPseudoUSSegStoreMask<VReg ValClass, bits<7> EEW>:
+class VPseudoUSSegStoreMask<VReg ValClass, bits<7> EEW, bits<4> NF>:
       Pseudo<(outs),
              (ins ValClass:$rd, GPR:$rs1,
                   VMaskOp:$vm, GPR:$vl, ixlenimm:$sew),[]>,
       RISCVVPseudo,
-      RISCVZvlsseg<PseudoToIntrinsic<NAME, true>.Intrinsic, EEW, VLMul> {
+      RISCVVSSEG<NF, /*Masked*/1, /*Strided*/0, EEW, VLMul> {
   let mayLoad = 0;
   let mayStore = 1;
   let hasSideEffects = 0;
@@ -1152,11 +1182,11 @@ class VPseudoUSSegStoreMask<VReg ValClass, bits<7> EEW>:
   let BaseInstr = !cast<Instruction>(PseudoToVInst<NAME>.VInst);
 }
 
-class VPseudoSSegStoreNoMask<VReg ValClass, bits<7> EEW>:
+class VPseudoSSegStoreNoMask<VReg ValClass, bits<7> EEW, bits<4> NF>:
       Pseudo<(outs),
              (ins ValClass:$rd, GPR:$rs1, GPR: $offset, GPR:$vl, ixlenimm:$sew),[]>,
       RISCVVPseudo,
-      RISCVZvlsseg<PseudoToIntrinsic<NAME, false>.Intrinsic, EEW, VLMul> {
+      RISCVVSSEG<NF, /*Masked*/0, /*Strided*/1, EEW, VLMul> {
   let mayLoad = 0;
   let mayStore = 1;
   let hasSideEffects = 0;
@@ -1168,12 +1198,12 @@ class VPseudoSSegStoreNoMask<VReg ValClass, bits<7> EEW>:
   let BaseInstr = !cast<Instruction>(PseudoToVInst<NAME>.VInst);
 }
 
-class VPseudoSSegStoreMask<VReg ValClass, bits<7> EEW>:
+class VPseudoSSegStoreMask<VReg ValClass, bits<7> EEW, bits<4> NF>:
       Pseudo<(outs),
              (ins ValClass:$rd, GPR:$rs1, GPR: $offset,
                   VMaskOp:$vm, GPR:$vl, ixlenimm:$sew),[]>,
       RISCVVPseudo,
-      RISCVZvlsseg<PseudoToIntrinsic<NAME, true>.Intrinsic, EEW, VLMul> {
+      RISCVVSSEG<NF, /*Masked*/1, /*Strided*/1, EEW, VLMul> {
   let mayLoad = 0;
   let mayStore = 1;
   let hasSideEffects = 0;
@@ -1184,12 +1214,13 @@ class VPseudoSSegStoreMask<VReg ValClass, bits<7> EEW>:
   let BaseInstr = !cast<Instruction>(PseudoToVInst<NAME>.VInst);
 }
 
-class VPseudoISegStoreNoMask<VReg ValClass, VReg IdxClass, bits<7> EEW, bits<3> LMUL>:
+class VPseudoISegStoreNoMask<VReg ValClass, VReg IdxClass, bits<7> EEW, bits<3> LMUL,
+                             bits<4> NF, bit Ordered>:
       Pseudo<(outs),
              (ins ValClass:$rd, GPR:$rs1, IdxClass: $index,
                   GPR:$vl, ixlenimm:$sew),[]>,
       RISCVVPseudo,
-      RISCVZvlsseg<PseudoToIntrinsic<NAME, false>.Intrinsic, EEW, VLMul, LMUL> {
+      RISCVVSXSEG<NF, /*Masked*/0, Ordered, EEW, VLMul, LMUL> {
   let mayLoad = 0;
   let mayStore = 1;
   let hasSideEffects = 0;
@@ -1201,12 +1232,13 @@ class VPseudoISegStoreNoMask<VReg ValClass, VReg IdxClass, bits<7> EEW, bits<3>
   let BaseInstr = !cast<Instruction>(PseudoToVInst<NAME>.VInst);
 }
 
-class VPseudoISegStoreMask<VReg ValClass, VReg IdxClass, bits<7> EEW, bits<3> LMUL>:
+class VPseudoISegStoreMask<VReg ValClass, VReg IdxClass, bits<7> EEW, bits<3> LMUL,
+                           bits<4> NF, bit Ordered>:
       Pseudo<(outs),
              (ins ValClass:$rd, GPR:$rs1, IdxClass: $index,
                   VMaskOp:$vm, GPR:$vl, ixlenimm:$sew),[]>,
       RISCVVPseudo,
-      RISCVZvlsseg<PseudoToIntrinsic<NAME, true>.Intrinsic, EEW, VLMul, LMUL> {
+      RISCVVSXSEG<NF, /*Masked*/1, Ordered, EEW, VLMul, LMUL> {
   let mayLoad = 0;
   let mayStore = 1;
   let hasSideEffects = 0;
@@ -1889,9 +1921,9 @@ multiclass VPseudoUSSegLoad<bit isFF> {
           defvar vreg = SegRegClass<lmul, nf>.RC;
           defvar FFStr = !if(isFF, "FF", "");
           def nf # "E" # eew # FFStr # "_V_" # LInfo :
-            VPseudoUSSegLoadNoMask<vreg, eew>;
+            VPseudoUSSegLoadNoMask<vreg, eew, nf, isFF>;
           def nf # "E" # eew # FFStr # "_V_" # LInfo # "_MASK" :
-            VPseudoUSSegLoadMask<vreg, eew>;
+            VPseudoUSSegLoadMask<vreg, eew, nf, isFF>;
         }
       }
     }
@@ -1905,15 +1937,15 @@ multiclass VPseudoSSegLoad {
       let VLMul = lmul.value in {
         foreach nf = NFSet<lmul>.L in {
           defvar vreg = SegRegClass<lmul, nf>.RC;
-          def nf # "E" # eew # "_V_" # LInfo : VPseudoSSegLoadNoMask<vreg, eew>;
+          def nf # "E" # eew # "_V_" # LInfo : VPseudoSSegLoadNoMask<vreg, eew, nf>;
-          def nf # "E" # eew # "_V_" # LInfo # "_MASK" : VPseudoSSegLoadMask<vreg, eew>;
+          def nf # "E" # eew # "_V_" # LInfo # "_MASK" : VPseudoSSegLoadMask<vreg, eew, nf>;
         }
       }
     }
   }
 }
 
-multiclass VPseudoISegLoad {
+multiclass VPseudoISegLoad<bit Ordered> {
   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.
@@ -1924,9 +1956,9 @@ multiclass VPseudoISegLoad {
           foreach nf = NFSet<val_lmul>.L in {
             defvar ValVreg = SegRegClass<val_lmul, nf>.RC;
             def nf # "EI" # idx_eew # "_V_" # IdxLInfo # "_" # ValLInfo :
-              VPseudoISegLoadNoMask<ValVreg, IdxVreg, idx_eew, idx_lmul.value>;
+              VPseudoISegLoadNoMask<ValVreg, IdxVreg, idx_eew, idx_lmul.value, nf, Ordered>;
             def nf # "EI" # idx_eew # "_V_" # IdxLInfo # "_" # ValLInfo # "_MASK" :
-              VPseudoISegLoadMask<ValVreg, IdxVreg, idx_eew, idx_lmul.value>;
+              VPseudoISegLoadMask<ValVreg, IdxVreg, idx_eew, idx_lmul.value, nf, Ordered>;
           }
         }
       }
@@ -1941,8 +1973,8 @@ multiclass VPseudoUSSegStore {
       let VLMul = lmul.value in {
         foreach nf = NFSet<lmul>.L in {
           defvar vreg = SegRegClass<lmul, nf>.RC;
-          def nf # "E" # eew # "_V_" # LInfo : VPseudoUSSegStoreNoMask<vreg, eew>;
+          def nf # "E" # eew # "_V_" # LInfo : VPseudoUSSegStoreNoMask<vreg, eew, nf>;
-          def nf # "E" # eew # "_V_" # LInfo # "_MASK" : VPseudoUSSegStoreMask<vreg, eew>;
+          def nf # "E" # eew # "_V_" # LInfo # "_MASK" : VPseudoUSSegStoreMask<vreg, eew, nf>;
         }
       }
     }
@@ -1956,15 +1988,15 @@ multiclass VPseudoSSegStore {
       let VLMul = lmul.value in {
         foreach nf = NFSet<lmul>.L in {
           defvar vreg = SegRegClass<lmul, nf>.RC;
-          def nf # "E" # eew # "_V_" # LInfo : VPseudoSSegStoreNoMask<vreg, eew>;
+          def nf # "E" # eew # "_V_" # LInfo : VPseudoSSegStoreNoMask<vreg, eew, nf>;
-          def nf # "E" # eew # "_V_" # LInfo # "_MASK" : VPseudoSSegStoreMask<vreg, eew>;
+          def nf # "E" # eew # "_V_" # LInfo # "_MASK" : VPseudoSSegStoreMask<vreg, eew, nf>;
         }
       }
     }
   }
 }
 
-multiclass VPseudoISegStore {
+multiclass VPseudoISegStore<bit Ordered> {
   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.
@@ -1975,9 +2007,9 @@ multiclass VPseudoISegStore {
           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>;
+              VPseudoISegStoreNoMask<ValVreg, IdxVreg, idx_eew, idx_lmul.value, nf, Ordered>;
             def nf # "EI" # idx_eew # "_V_" # IdxLInfo # "_" # ValLInfo # "_MASK" :
-              VPseudoISegStoreMask<ValVreg, IdxVreg, idx_eew, idx_lmul.value>;
+              VPseudoISegStoreMask<ValVreg, IdxVreg, idx_eew, idx_lmul.value, nf, Ordered>;
           }
         }
       }
@@ -3235,12 +3267,12 @@ defm PseudoVL : VPseudoUSLoad</*isFF=*/true>;
 //===----------------------------------------------------------------------===//
 defm PseudoVLSEG : VPseudoUSSegLoad</*isFF=*/false>;
 defm PseudoVLSSEG : VPseudoSSegLoad;
-defm PseudoVLOXSEG : VPseudoISegLoad;
+defm PseudoVLOXSEG : VPseudoISegLoad</*Ordered=*/true>;
-defm PseudoVLUXSEG : VPseudoISegLoad;
+defm PseudoVLUXSEG : VPseudoISegLoad</*Ordered=*/false>;
 defm PseudoVSSEG : VPseudoUSSegStore;
 defm PseudoVSSSEG : VPseudoSSegStore;
-defm PseudoVSOXSEG : VPseudoISegStore;
+defm PseudoVSOXSEG : VPseudoISegStore</*Ordered=*/true>;
-defm PseudoVSUXSEG : VPseudoISegStore;
+defm PseudoVSUXSEG : VPseudoISegStore</*Ordered=*/false>;
 
 // vlseg<nf>e<eew>ff.v may update VL register
 let hasSideEffects = 1, Defs = [VL] in