[RISCV] Remove DecoderMethod from C_NOP_HINT. NFC

topperc · topperc · commit 2398e2057cfa · 2023-02-06T07:25:56.000-08:00
This doesn't appear to be needed. Differential Revision: https://reviews.llvm.org/D143367
diff --git a/llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp b/llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp
@@ -353,10 +353,6 @@ static DecodeStatus decodeRVCInstrRdRs1ImmZero(MCInst &Inst, uint32_t Insn,
                                                uint64_t Address,
                                                const MCDisassembler *Decoder);
 
-static DecodeStatus decodeRVCInstrSImm(MCInst &Inst, uint32_t Insn,
-                                       uint64_t Address,
-                                       const MCDisassembler *Decoder);
-
 static DecodeStatus decodeRVCInstrRdSImm(MCInst &Inst, uint32_t Insn,
                                          uint64_t Address,
                                          const MCDisassembler *Decoder);
@@ -387,17 +383,6 @@ static DecodeStatus decodeRVCInstrRdRs1ImmZero(MCInst &Inst, uint32_t Insn,
   return MCDisassembler::Success;
 }
 
-static DecodeStatus decodeRVCInstrSImm(MCInst &Inst, uint32_t Insn,
-                                       uint64_t Address,
-                                       const MCDisassembler *Decoder) {
-  uint32_t SImm6 =
-      fieldFromInstruction(Insn, 12, 1) << 5 | fieldFromInstruction(Insn, 2, 5);
-  DecodeStatus Result = decodeSImmOperand<6>(Inst, SImm6, Address, Decoder);
-  (void)Result;
-  assert(Result == MCDisassembler::Success && "Invalid immediate");
-  return MCDisassembler::Success;
-}
-
 static DecodeStatus decodeRVCInstrRdSImm(MCInst &Inst, uint32_t Insn,
                                          uint64_t Address,
                                          const MCDisassembler *Decoder) {
diff --git a/llvm/lib/Target/RISCV/RISCVInstrInfoC.td b/llvm/lib/Target/RISCV/RISCVInstrInfoC.td
@@ -611,7 +611,6 @@ let rd = 0 in
 def C_NOP_HINT : RVInst16CI<0b000, 0b01, (outs), (ins simm6nonzero:$imm),
                             "c.nop", "$imm">, Sched<[WriteNop]> {
   let Inst{6-2} = imm{4-0};
-  let DecoderMethod = "decodeRVCInstrSImm";
 }
 
 def C_ADDI_HINT_IMM_ZERO : RVInst16CI<0b000, 0b01, (outs GPRNoX0:$rd_wb),

Original file line number	Diff line number	Diff line change
`@@ -611,7 +611,6 @@ let rd = 0 in`
`611`	`611`	`def C_NOP_HINT : RVInst16CI<0b000, 0b01, (outs), (ins simm6nonzero:$imm),`
`612`	`612`	`"c.nop", "$imm">, Sched<[WriteNop]> {`
`613`	`613`	`let Inst{6-2} = imm{4-0};`
`614`		`- let DecoderMethod = "decodeRVCInstrSImm";`
`615`	`614`	`}`
`616`	`615`
`617`	`616`	`def C_ADDI_HINT_IMM_ZERO : RVInst16CI<0b000, 0b01, (outs GPRNoX0:$rd_wb),`