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//===- CodeGenInstruction.h - Instruction Class Wrapper ---------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines a wrapper class for the 'Instruction' TableGen class.
//
//===----------------------------------------------------------------------===//
#ifndef CODEGEN_INSTRUCTION_H
#define CODEGEN_INSTRUCTION_H
#include "llvm/CodeGen/ValueTypes.h"
#include <string>
#include <vector>
#include <utility>
namespace llvm {
class Record;
struct CodeGenInstruction {
Record *TheDef; // The actual record defining this instruction.
std::string Name; // Contents of the 'Name' field.
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;
/// OperandInfo - The information we keep track of for each operand in the
/// operand list for a tablegen instruction.
struct OperandInfo {
/// Rec - The definition this operand is declared as.
Record *Rec;
/// Ty - The MachineValueType of the operand.
///
MVT::ValueType Ty;
/// Name - If this operand was assigned a symbolic name, this is it,
/// otherwise, it's empty.
std::string Name;
/// PrinterMethodName - The method used to print operands of this type in
/// the asmprinter.
std::string PrinterMethodName;
/// MIOperandNo - Currently (this is meant to be phased out), some logical
/// operands correspond to multiple MachineInstr operands. In the X86
/// target for example, one address operand is represented as 4
/// MachineOperands. Because of this, the operand number in the
/// OperandList may not match the MachineInstr operand num. Until it
/// does, this contains the MI operand index of this operand.
unsigned MIOperandNo;
OperandInfo(Record *R, MVT::ValueType T, const std::string &N,
const std::string &PMN, unsigned MION)
: Rec(R), Ty(T), Name(N), PrinterMethodName(PMN), MIOperandNo(MION) {}
};
/// OperandList - The list of declared operands, along with their declared
/// type (which is a record).
std::vector<OperandInfo> OperandList;
// Various boolean values we track for the instruction.
bool isReturn;
bool isBranch;
bool isBarrier;
bool isCall;
bool isTwoAddress;
bool isTerminator;
CodeGenInstruction(Record *R, const std::string &AsmStr);
/// 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, throw an exception.
unsigned getOperandNamed(const std::string &Name) const;
};
}
#endif
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