[RISCV][NFC] Remove dead code.

All ISD::BSWAP nodes are not customized lowered in RISC-V now, so the patch
removed dead code for ISD::BSWAP in LowerOperation.

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D137907

diff --git a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
index 6efc4f0..687a89e 100644 (file)
--- a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -3572,7 +3572,6 @@ SDValue RISCVTargetLowering::LowerOperation(SDValue Op,
     return LowerINTRINSIC_W_CHAIN(Op, DAG);
   case ISD::INTRINSIC_VOID:
     return LowerINTRINSIC_VOID(Op, DAG);
-  case ISD::BSWAP:
   case ISD::BITREVERSE: {
     MVT VT = Op.getSimpleValueType();
     SDLoc DL(Op);