| //===-- llvm/CodeGen/MachineBasicBlock.h ------------------------*- 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. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Collect the sequence of machine instructions for a basic block. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_CODEGEN_MACHINEBASICBLOCK_H |
| #define LLVM_CODEGEN_MACHINEBASICBLOCK_H |
| |
| #include <vector> |
| class BasicBlock; |
| class MachineInstr; |
| template <typename T> struct ilist_traits; |
| |
| class MachineBasicBlock { |
| std::vector<MachineInstr*> Insts; |
| MachineBasicBlock *Prev, *Next; |
| const BasicBlock *BB; |
| public: |
| MachineBasicBlock(const BasicBlock *bb = 0) : Prev(0), Next(0), BB(bb) {} |
| ~MachineBasicBlock() {} |
| |
| /// getBasicBlock - Return the LLVM basic block that this instance |
| /// corresponded to originally. |
| /// |
| const BasicBlock *getBasicBlock() const { return BB; } |
| |
| typedef std::vector<MachineInstr*>::iterator iterator; |
| typedef std::vector<MachineInstr*>::const_iterator const_iterator; |
| typedef std::reverse_iterator<const_iterator> const_reverse_iterator; |
| typedef std::reverse_iterator<iterator> reverse_iterator; |
| |
| unsigned size() const { return Insts.size(); } |
| bool empty() const { return Insts.empty(); } |
| |
| MachineInstr * operator[](unsigned i) const { return Insts[i]; } |
| MachineInstr *&operator[](unsigned i) { return Insts[i]; } |
| |
| MachineInstr *front() const { return Insts.front(); } |
| MachineInstr *back() const { return Insts.back(); } |
| |
| iterator begin() { return Insts.begin(); } |
| const_iterator begin() const { return Insts.begin(); } |
| iterator end() { return Insts.end(); } |
| const_iterator end() const { return Insts.end(); } |
| reverse_iterator rbegin() { return Insts.rbegin(); } |
| const_reverse_iterator rbegin() const { return Insts.rbegin(); } |
| reverse_iterator rend () { return Insts.rend(); } |
| const_reverse_iterator rend () const { return Insts.rend(); } |
| |
| void push_back(MachineInstr *MI) { Insts.push_back(MI); } |
| template<typename IT> |
| void insert(iterator I, IT S, IT E) { Insts.insert(I, S, E); } |
| iterator insert(iterator I, MachineInstr *M) { return Insts.insert(I, M); } |
| |
| // erase - Remove the specified element or range from the instruction list. |
| // These functions do not delete any instructions removed. |
| // |
| iterator erase(iterator I) { return Insts.erase(I); } |
| iterator erase(iterator I, iterator E) { return Insts.erase(I, E); } |
| |
| MachineInstr *pop_back() { |
| MachineInstr *R = back(); |
| Insts.pop_back(); |
| return R; |
| } |
| |
| private: // Methods used to maintain doubly linked list of blocks... |
| friend class ilist_traits<MachineBasicBlock>; |
| |
| MachineBasicBlock *getPrev() const { return Prev; } |
| MachineBasicBlock *getNext() const { return Next; } |
| void setPrev(MachineBasicBlock *P) { Prev = P; } |
| void setNext(MachineBasicBlock *N) { Next = N; } |
| }; |
| |
| |
| #endif |