[RISCV] Simpify operand index calculation in createMIROperandComment [nfc]

diff --git a/llvm/lib/Target/RISCV/RISCVInstrInfo.cpp b/llvm/lib/Target/RISCV/RISCVInstrInfo.cpp
index 1c47ac1..cf99251 100644 (file)
--- a/llvm/lib/Target/RISCV/RISCVInstrInfo.cpp
+++ b/llvm/lib/Target/RISCV/RISCVInstrInfo.cpp
@@ -1504,18 +1504,11 @@ std::string RISCVInstrInfo::createMIROperandComment(
       OpIdx == 2) {
     unsigned Imm = MI.getOperand(OpIdx).getImm();
     RISCVVType::printVType(Imm, OS);
-  } else if (RISCVII::hasSEWOp(TSFlags)) {
-    unsigned NumOperands = MI.getNumExplicitOperands();
-    bool HasPolicy = RISCVII::hasVecPolicyOp(TSFlags);
-
-    // The SEW operand is before any policy operand.
-    if (OpIdx != NumOperands - HasPolicy - 1)
-      return std::string();
-
+  } else if (RISCVII::hasSEWOp(TSFlags) &&
+             OpIdx == RISCVII::getSEWOpNum(MI.getDesc())) {
     unsigned Log2SEW = MI.getOperand(OpIdx).getImm();
     unsigned SEW = Log2SEW ? 1 << Log2SEW : 8;
     assert(RISCVVType::isValidSEW(SEW) && "Unexpected SEW");
-
     OS << "e" << SEW;
   }