AMDGPU: Simplify definition of bitop3 operand. NFC. (#118648)

Co-authored-by: Jay Foad <jay.foad@amd.com>

Author: arsenm

llvm/lib/Target/AMDGPU/AsmParser/AMDGPUAsmParser.cpp

@@ -1920,9 +1920,6 @@ class AMDGPUAsmParser : public MCTargetAsmParser {
   ParseStatus parseEndpgm(OperandVector &Operands);
 
   ParseStatus parseVOPD(OperandVector &Operands);
-
-  ParseStatus parseBitOp3(OperandVector &Operands);
-  AMDGPUOperand::Ptr defaultBitOp3() const;
 };
 
 } // end anonymous namespace
@@ -9796,20 +9793,6 @@ ParseStatus AMDGPUAsmParser::parseEndpgm(OperandVector &Operands) {
 
 bool AMDGPUOperand::isEndpgm() const { return isImmTy(ImmTyEndpgm); }
 
-//===----------------------------------------------------------------------===//
-// BITOP3
-//===----------------------------------------------------------------------===//
-
-ParseStatus AMDGPUAsmParser::parseBitOp3(OperandVector &Operands) {
-  ParseStatus Res =
-      parseIntWithPrefix("bitop3", Operands, AMDGPUOperand::ImmTyBitOp3);
-  return Res;
-}
-
-AMDGPUOperand::Ptr AMDGPUAsmParser::defaultBitOp3() const {
-  return AMDGPUOperand::CreateImm(this, 0, SMLoc(), AMDGPUOperand::ImmTyBitOp3);
-}
-
 //===----------------------------------------------------------------------===//
 // Split Barrier
 //===----------------------------------------------------------------------===//

llvm/lib/Target/AMDGPU/SIInstrInfo.td

@@ -1271,7 +1271,8 @@ def ByteSel : NamedIntOperand<"byte_sel"> {
   let Validator = "isUInt<2>";
 }
 
-def BitOp3 : CustomOperand<i32, 1, "BitOp3">;
+let PrintMethod = "printBitOp3" in
+def BitOp3 : NamedIntOperand<"bitop3">;
 def bitop3_0 : DefaultOperand<BitOp3, 0>;
 
 class KImmFPOperand<ValueType vt> : ImmOperand<vt> {