[mips] Unified the MipsMemSimm9GPRAsmOperand and MipsMemSimm9AsmOperand functions, NFC.

[s.egerton]

Summary

These functions had the same purpose, however the MipsMemSimm9GPRAsmOperand
function was only for micromips32r6 and the MipsMemSimm9AsmOperand did not
have a ParserMatchClass.

[dsanders]

LGTM

lib/Target/Mips/AsmParser/MipsAsmParser.cpp

bool isToken() const override {
     // The matcher emitter checks tokens first.
     return Kind == k_Token;
   }
   bool isMem() const override { return Kind == k_Memory; }
   bool isConstantMemOff() const {
     return isMem() && dyn_cast<MCConstantExpr>(getMemOff());
   }
   template <unsigned Bits> bool isMemWithSimmOffset() const {
-    return isMem() && isConstantMemOff() && isInt<Bits>(getConstantMemOff());
-  }
-  template <unsigned Bits> bool isMemWithSimmOffsetGPR() const {
     return isMem() && isConstantMemOff() && isInt<Bits>(getConstantMemOff())
       && getMemBase()->isGPRAsmReg();
   }
   bool isMemWithGRPMM16Base() const {
     return isMem() && getMemBase()->isMM16AsmReg();
   }
   template <unsigned Bits> bool isMemWithUimmOffsetSP() const {
     return isMem() && isConstantMemOff() && isUInt<Bits>(getConstantMemOff())

lib/Target/Mips/MicroMips32r6InstrInfo.td

 class CVT_D_W_MMR6_ENC : POOL32F_CVT_DS_FM<"cvt.d.w", 1, 0b1001101>;
 class CVT_D_L_MMR6_ENC : POOL32F_CVT_DS_FM<"cvt.d.l", 2, 0b1001101>;
 class CVT_S_D_MMR6_ENC : POOL32F_CVT_DS_FM<"cvt.s.d", 0, 0b1101101>;
 class CVT_S_W_MMR6_ENC : POOL32F_CVT_DS_FM<"cvt.s.w", 1, 0b1101101>;
 class CVT_S_L_MMR6_ENC : POOL32F_CVT_DS_FM<"cvt.s.l", 2, 0b1101101>;
 
 //===----------------------------------------------------------------------===//
 //
-// Operand Definitions
-//
-//===----------------------------------------------------------------------===//
-
-def MipsMemSimm9GPRAsmOperand : AsmOperandClass {
-  let Name = "MemOffsetSimm9GPR";
-  let SuperClasses = [MipsMemAsmOperand];
-  let RenderMethod = "addMemOperands";
-  let ParserMethod = "parseMemOperand";
-  let PredicateMethod = "isMemWithSimmOffsetGPR<9>";
-}
-
-def mem_simm9gpr : mem_generic {
-  let MIOperandInfo = (ops ptr_rc, simm9);
-  let EncoderMethod = "getMemEncoding";
-  let ParserMatchClass = MipsMemSimm9GPRAsmOperand;
-}
-
-//===----------------------------------------------------------------------===//
-//
 // Instruction Descriptions
 //
 //===----------------------------------------------------------------------===//
 
 class ADD_MMR6_DESC : ArithLogicR<"add", GPR32Opnd>;
 class ADDIU_MMR6_DESC : ArithLogicI<"addiu", simm16, GPR32Opnd>;
 class ADDU_MMR6_DESC : ArithLogicR<"addu", GPR32Opnd>;
 class MUL_MMR6_DESC : ArithLogicR<"mul", GPR32Opnd>;
class SWE_MMR6_DESC_BASE<string opstr, DAGOperand RO, DAGOperand MO,
                   InstrItinClass Itin = NoItinerary,
                   ComplexPattern Addr = addr> :
   InstSE<(outs), (ins RO:$rt, MO:$addr), !strconcat(opstr, "\t$rt, $addr"),
          [(OpNode RO:$rt, Addr:$addr)], Itin, FrmI, opstr> {
   let DecoderMethod = "DecodeMem";
   let mayStore = 1;
 }
 class SW_MMR6_DESC : Store<"sw", GPR32Opnd>;
-class SWE_MMR6_DESC : SWE_MMR6_DESC_BASE<"swe", GPR32Opnd, mem_simm9gpr>;
+class SWE_MMR6_DESC : SWE_MMR6_DESC_BASE<"swe", GPR32Opnd, mem_simm9>;
 
 /// Floating Point Instructions
 class FARITH_MMR6_DESC_BASE<string instr_asm, RegisterOperand RC,
                             InstrItinClass Itin, bit isComm,
                             SDPatternOperator OpNode = null_frag> : HARDFLOAT {
   dag OutOperandList = (outs RC:$fd);
   dag InOperandList = (ins RC:$ft, RC:$fs);
   string AsmString = !strconcat(instr_asm, "\t$fd, $fs, $ft");

lib/Target/Mips/MipsInstrInfo.td

 def pcrel16      : Operand<i32> {
 }
 
 def MipsMemAsmOperand : AsmOperandClass {
   let Name = "Mem";
   let ParserMethod = "parseMemOperand";
 }
 
+def MipsMemSimm9AsmOperand : AsmOperandClass {
+  let Name = "MemOffsetSimm9";
+  let SuperClasses = [MipsMemAsmOperand];
+  let RenderMethod = "addMemOperands";
+  let ParserMethod = "parseMemOperand";
+  let PredicateMethod = "isMemWithSimmOffset<9>";
+}
+
 def MipsMemSimm11AsmOperand : AsmOperandClass {
   let Name = "MemOffsetSimm11";
   let SuperClasses = [MipsMemAsmOperand];
   let RenderMethod = "addMemOperands";
   let ParserMethod = "parseMemOperand";
   let PredicateMethod = "isMemWithSimmOffset<11>";
 }
 

 def mem_msa : mem_generic {
   let MIOperandInfo = (ops ptr_rc, simm10);
   let EncoderMethod = "getMSAMemEncoding";
 }
 
 def mem_simm9 : mem_generic {
   let MIOperandInfo = (ops ptr_rc, simm9);
   let EncoderMethod = "getMemEncoding";
+  let ParserMatchClass = MipsMemSimm9AsmOperand;
 }
 
 def mem_simm11 : mem_generic {
   let MIOperandInfo = (ops ptr_rc, simm11);
   let EncoderMethod = "getMemEncoding";
   let ParserMatchClass = MipsMemSimm11AsmOperand;
 }