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Add support to BasicBlocks for iterating backwards over the

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instructions. This just exposes the already present reverse iterators of
the instruction ilist.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171159 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth
2012-12-27 12:00:56 +00:00
parent edf315cd71
commit a455fdd7e1
1 changed files with 9 additions and 2 deletions
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11
include/llvm/BasicBlock.h
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@@ -93,8 +93,10 @@ public:
LLVMContext &getContext() const; LLVMContext &getContext() const;
/// Instruction iterators... /// Instruction iterators...
typedef InstListType::iterator iterator; typedef InstListType::iterator iterator;
typedef InstListType::const_iterator const_iterator; typedef InstListType::const_iterator const_iterator;
typedef InstListType::reverse_iterator reverse_iterator;
typedef InstListType::const_reverse_iterator const_reverse_iterator;
/// Create - Creates a new BasicBlock. If the Parent parameter is specified, /// Create - Creates a new BasicBlock. If the Parent parameter is specified,
/// the basic block is automatically inserted at either the end of the /// the basic block is automatically inserted at either the end of the
@@ -191,6 +193,11 @@ public:
inline iterator end () { return InstList.end(); } inline iterator end () { return InstList.end(); }
inline const_iterator end () const { return InstList.end(); } inline const_iterator end () const { return InstList.end(); }
inline reverse_iterator rbegin() { return InstList.rbegin(); }
inline const_reverse_iterator rbegin() const { return InstList.rbegin(); }
inline reverse_iterator rend () { return InstList.rend(); }
inline const_reverse_iterator rend () const { return InstList.rend(); }
inline size_t size() const { return InstList.size(); } inline size_t size() const { return InstList.size(); }
inline bool empty() const { return InstList.empty(); } inline bool empty() const { return InstList.empty(); }
inline const Instruction &front() const { return InstList.front(); } inline const Instruction &front() const { return InstList.front(); }