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Make pred_iterator DefaultConstructible, and add an accessor to

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retrieve the underlying getOperandNo() value.

llvm-svn: 126804
This commit is contained in:
Dan Gohman 2011-03-02 00:11:28 +00:00
parent 4d3c996555
commit b62daa9ec3
1 changed files with 7 additions and 0 deletions
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7
include/llvm/Support/CFG.h
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@ -41,6 +41,7 @@ class PredIterator : public std::iterator<std::forward_iterator_tag,
public:
typedef typename super::pointer pointer;
PredIterator() {}
explicit inline PredIterator(Ptr *bb) : It(bb->use_begin()) {
advancePastNonTerminators();
}
@ -64,6 +65,12 @@ public:
inline Self operator++(int) { // Postincrement
Self tmp = *this; ++*this; return tmp;
}
/// getOperandNo - Return the operand number in the predecessor's
/// terminator of the successor.
unsigned getOperandNo() const {
return It.getOperandNo();
}
};
typedef PredIterator<BasicBlock, Value::use_iterator> pred_iterator;