CodeGenInstruction.h revision 87c5905e0b6f551e21c9a96f1b6418920d908210 
1//===- CodeGenInstruction.h - Instruction Class Wrapper ---------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file was developed by the LLVM research group and is distributed under
6// the University of Illinois Open Source License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file defines a wrapper class for the 'Instruction' TableGen class.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef CODEGEN_INSTRUCTION_H
15#define CODEGEN_INSTRUCTION_H
16
17#include "llvm/CodeGen/ValueTypes.h"
18#include <string>
19#include <vector>
20#include <utility>
21
22namespace llvm {
23  class Record;
24
25  struct CodeGenInstruction {
26    Record *TheDef;            // The actual record defining this instruction.
27    std::string Name;          // Contents of the 'Name' field.
28    std::string Namespace;     // The namespace the instruction is in.
29
30    /// AsmString - The format string used to emit a .s file for the
31    /// instruction.
32    std::string AsmString;
33
34    /// OperandInfo - For each operand declared in the OperandList of the
35    /// instruction, keep track of its record (which specifies the class of the
36    /// operand), its type, and the name given to the operand, if any.
37    struct OperandInfo {
38      Record *Rec;
39      MVT::ValueType Ty;
40      std::string Name;
41      OperandInfo(Record *R, MVT::ValueType T, const std::string &N)
42        : Rec(R), Ty(T), Name(N) {}
43    };
44
45    /// OperandList - The list of declared operands, along with their declared
46    /// type (which is a record).
47    std::vector<OperandInfo> OperandList;
48
49    // Various boolean values we track for the instruction.
50    bool isReturn;
51    bool isBranch;
52    bool isBarrier;
53    bool isCall;
54    bool isTwoAddress;
55    bool isTerminator;
56
57    CodeGenInstruction(Record *R);
58
59    /// getOperandNamed - Return the index of the operand with the specified
60    /// non-empty name.  If the instruction does not have an operand with the
61    /// specified name, throw an exception.
62    unsigned getOperandNamed(const std::string &Name) const;
63  };
64}
65
66#endif
67