[MIRParser] Delete dead code. NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282098 91177308-0d34-0410-b5e6-96231b3b80d8

Author: dcci

lib/CodeGen/MIRParser/MIParser.cpp

@@ -126,7 +126,6 @@ class MIParser {
   bool parseRegisterFlag(unsigned &Flags);
   bool parseSubRegisterIndex(unsigned &SubReg);
   bool parseRegisterTiedDefIndex(unsigned &TiedDefIdx);
-  bool parseSize(unsigned &Size);
   bool parseRegisterOperand(MachineOperand &Dest,
                             Optional<unsigned> &TiedDefIdx, bool IsDef = false);
   bool parseImmediateOperand(MachineOperand &Dest);
@@ -888,17 +887,6 @@ bool MIParser::parseRegisterTiedDefIndex(unsigned &TiedDefIdx) {
   return false;
 }
 
-bool MIParser::parseSize(unsigned &Size) {
-  if (Token.isNot(MIToken::IntegerLiteral))
-    return error("expected an integer literal for the size");
-  if (getUnsigned(Size))
-    return true;
-  lex();
-  if (expectAndConsume(MIToken::rparen))
-    return true;
-  return false;
-}
-
 bool MIParser::assignRegisterTies(MachineInstr &MI,
                                   ArrayRef<ParsedMachineOperand> Operands) {
   SmallVector<std::pair<unsigned, unsigned>, 4> TiedRegisterPairs;