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Add IntervalMap::const_iterator::atBegin().

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It returns true when operator--() can be called.

llvm-svn: 138107
This commit is contained in:
Jakob Stoklund Olesen 2011-08-19 22:04:19 +00:00
parent 31d80032c6
commit 391019be7a
1 changed files with 3 additions and 0 deletions
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include/llvm/ADT/IntervalMap.h
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@ -1335,6 +1335,9 @@ public:
/// valid - Return true if the current position is valid, false for end().
bool valid() const { return path.valid(); }
/// atBegin - Return true if the current position is the first map entry.
bool atBegin() const { return path.atBegin(); }
/// start - Return the beginning of the current interval.
const KeyT &start() const { return unsafeStart(); }