diff --git a/llvm/lib/Target/RISCV/RISCVOptWInstrs.cpp b/llvm/lib/Target/RISCV/RISCVOptWInstrs.cpp
index ed61236415ccf..24c05a2f807d0 100644
--- a/llvm/lib/Target/RISCV/RISCVOptWInstrs.cpp
+++ b/llvm/lib/Target/RISCV/RISCVOptWInstrs.cpp
@@ -311,9 +311,7 @@ static bool hasAllNBitUsers(const MachineInstr &OrigMI,
       case RISCV::XORI:
 
       case RISCV::ANDN:
-      case RISCV::BREV8:
       case RISCV::CLMUL:
-      case RISCV::ORC_B:
       case RISCV::ORN:
       case RISCV::SH1ADD:
       case RISCV::SH2ADD: