+ // Information gleaned from the operand list.
+ bool isPredicable;
+ bool hasOptionalDef;
+ bool isVariadic;
+
+ // Provide transparent accessors to the operand list.
+ bool empty() const { return OperandList.empty(); }
+ unsigned size() const { return OperandList.size(); }
+ const OperandInfo &operator[](unsigned i) const { return OperandList[i]; }
+ OperandInfo &operator[](unsigned i) { return OperandList[i]; }
+ OperandInfo &back() { return OperandList.back(); }
+ const OperandInfo &back() const { return OperandList.back(); }
+
+
+ /// getOperandNamed - Return the index of the operand with the specified
+ /// non-empty name. If the instruction does not have an operand with the
+ /// specified name, abort.
+ unsigned getOperandNamed(StringRef Name) const;
+
+ /// hasOperandNamed - Query whether the instruction has an operand of the
+ /// given name. If so, return true and set OpIdx to the index of the
+ /// operand. Otherwise, return false.
+ bool hasOperandNamed(StringRef Name, unsigned &OpIdx) const;
+
+ /// ParseOperandName - Parse an operand name like "$foo" or "$foo.bar",
+ /// where $foo is a whole operand and $foo.bar refers to a suboperand.
+ /// This aborts if the name is invalid. If AllowWholeOp is true, references
+ /// to operands with suboperands are allowed, otherwise not.
+ std::pair<unsigned,unsigned> ParseOperandName(const std::string &Op,
+ bool AllowWholeOp = true);
+
+ /// getFlattenedOperandNumber - Flatten a operand/suboperand pair into a
+ /// flat machineinstr operand #.
+ unsigned getFlattenedOperandNumber(std::pair<unsigned,unsigned> Op) const {
+ return OperandList[Op.first].MIOperandNo + Op.second;
+ }
+
+ /// getSubOperandNumber - Unflatten a operand number into an
+ /// operand/suboperand pair.
+ std::pair<unsigned,unsigned> getSubOperandNumber(unsigned Op) const {
+ for (unsigned i = 0; ; ++i) {
+ assert(i < OperandList.size() && "Invalid flat operand #");
+ if (OperandList[i].MIOperandNo+OperandList[i].MINumOperands > Op)
+ return std::make_pair(i, Op-OperandList[i].MIOperandNo);
+ }
+ }
+
+
+ /// isFlatOperandNotEmitted - Return true if the specified flat operand #
+ /// should not be emitted with the code emitter.
+ bool isFlatOperandNotEmitted(unsigned FlatOpNo) const {
+ std::pair<unsigned,unsigned> Op = getSubOperandNumber(FlatOpNo);
+ if (OperandList[Op.first].DoNotEncode.size() > Op.second)
+ return OperandList[Op.first].DoNotEncode[Op.second];
+ return false;
+ }
+
+ void ProcessDisableEncoding(std::string Value);
+ };
+
+
+ class CodeGenInstruction {
+ public:
+ Record *TheDef; // The actual record defining this instruction.
+ std::string Namespace; // The namespace the instruction is in.
+
+ /// AsmString - The format string used to emit a .s file for the
+ /// instruction.
+ std::string AsmString;
+
+ /// Operands - This is information about the (ins) and (outs) list specified
+ /// to the instruction.
+ CGIOperandList Operands;
+
+ /// ImplicitDefs/ImplicitUses - These are lists of registers that are
+ /// implicitly defined and used by the instruction.
+ std::vector<Record*> ImplicitDefs, ImplicitUses;
+