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* Add assertions 

* Add a nodeVisited method to the DF interator

llvm-svn: 362
This commit is contained in:
Chris Lattner 2001-08-23 17:05:59 +00:00
parent d7ff578767
commit 9f35277950
1 changed files with 15 additions and 3 deletions
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18
llvm/include/llvm/CFG.h
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@ -108,9 +108,13 @@ public:
typedef SuccIterator<_Term, _BB> _Self; typedef SuccIterator<_Term, _BB> _Self;
// TODO: This can be random access iterator, need operator+ and stuff tho // TODO: This can be random access iterator, need operator+ and stuff tho
inline SuccIterator(_Term T) : Term(T), idx(0) {} // begin iterator inline SuccIterator(_Term T) : Term(T), idx(0) { // begin iterator
inline SuccIterator(_Term T, bool) assert(T && "getTerminator returned null!");
: Term(T), idx(Term->getNumSuccessors()) {} // end iterator }
inline SuccIterator(_Term T, bool) // end iterator
: Term(T), idx(Term->getNumSuccessors()) {
assert(T && "getTerminator returned null!");
}
inline bool operator==(const _Self& x) const { return idx == x.idx; } inline bool operator==(const _Self& x) const { return idx == x.idx; }
inline bool operator!=(const _Self& x) const { return !operator==(x); } inline bool operator!=(const _Self& x) const { return !operator==(x); }
@ -287,6 +291,14 @@ public:
inline _Self operator++(int) { // Postincrement inline _Self operator++(int) { // Postincrement
_Self tmp = *this; ++*this; return tmp; _Self tmp = *this; ++*this; return tmp;
} }
// nodeVisited - return true if this iterator has already visited the
// specified node. This is public, and will probably be used to iterate over
// nodes that a depth first iteration did not find: ie unreachable nodes.
//
inline bool nodeVisited(NodeType *Node) const {
return Visited.count(Node) != 0;
}
}; };
inline df_iterator df_begin(Method *M, bool Reverse = false) { inline df_iterator df_begin(Method *M, bool Reverse = false) {