MachineBasicBlock.h revision deb9654056939a12981446f6ed1139dca3412746 
1//===-- llvm/CodeGen/MachineCodeForBasicBlock.h -----------------*- C++ -*--=//
2//
3// Purpose:
4//   Collect the sequence of machine instructions for a basic block.
5//===---------------------------------------------------------------------===//
6
7#ifndef LLVM_CODEGEN_MACHINECODEFORBASICBLOCK_H
8#define LLVM_CODEGEN_MACHINECODEFORBASICBLOCK_H
9
10#include "llvm/BasicBlock.h"
11#include "llvm/Annotation.h"
12#include <vector>
13class MachineInstr;
14
15extern AnnotationID MCFBB_AID;
16
17class MachineCodeForBasicBlock: public Annotation {
18  std::vector<MachineInstr*> Insts;
19public:
20  MachineCodeForBasicBlock();
21  ~MachineCodeForBasicBlock() {}
22
23  // Static methods to retrieve or destroy the MachineCodeForBasicBlock
24  // object for a given basic block.
25  static MachineCodeForBasicBlock& get(const BasicBlock *bb) {
26    return *(MachineCodeForBasicBlock*)bb->getOrCreateAnnotation(MCFBB_AID);
27  }
28
29  static void destroy(const BasicBlock *bb) {
30    bb->deleteAnnotation(MCFBB_AID);
31  }
32
33  typedef std::vector<MachineInstr*>::iterator                iterator;
34  typedef std::vector<MachineInstr*>::const_iterator    const_iterator;
35  typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
36  typedef std::reverse_iterator<iterator>             reverse_iterator;
37
38  unsigned size() const { return Insts.size(); }
39  bool empty() const { return Insts.empty(); }
40
41  MachineInstr * operator[](unsigned i) const { return Insts[i]; }
42  MachineInstr *&operator[](unsigned i)       { return Insts[i]; }
43
44  MachineInstr *front() const { return Insts.front(); }
45  MachineInstr *back()  const { return Insts.back(); }
46
47  iterator                begin()       { return Insts.begin();  }
48  const_iterator          begin() const { return Insts.begin();  }
49  iterator                  end()       { return Insts.end();    }
50  const_iterator            end() const { return Insts.end();    }
51  reverse_iterator       rbegin()       { return Insts.rbegin(); }
52  const_reverse_iterator rbegin() const { return Insts.rbegin(); }
53  reverse_iterator       rend  ()       { return Insts.rend();   }
54  const_reverse_iterator rend  () const { return Insts.rend();   }
55
56  void push_back(MachineInstr *MI) { Insts.push_back(MI); }
57  template<typename IT>
58  void insert(iterator I, IT S, IT E) { Insts.insert(I, S, E); }
59  iterator insert(iterator I, MachineInstr *M) { return Insts.insert(I, M); }
60
61  // erase - Remove the specified range from the instruction list.  This does
62  // not delete in instructions removed.
63  //
64  iterator erase(iterator I, iterator E) { return Insts.erase(I, E); }
65
66  MachineInstr *pop_back() {
67    MachineInstr *R = back();
68    Insts.pop_back();
69    return R;
70  }
71};
72
73
74#endif
75