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DebugInfo: Add MDTypeRefArray, to replace DITypeArray

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This array-like wrapper adapts `MDTuple` to have elements of `MDTypeRef`
(whereas `MDTypeArray` has elements of `MDType`).  This is necessary to
migrate code using `DITypeArray`.  The only use of this is
`MDSubroutineType`'s `getTypeArray()` accessor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234200 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith 2015-04-06 19:48:50 +00:00
parent 0e89353f21
commit 520ab696d0
1 changed files with 37 additions and 1 deletions
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38
include/llvm/IR/DebugInfoMetadata.h
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@ -89,6 +89,42 @@ typedef TypedDebugNodeRef<DebugNode> DebugNodeRef;
typedef TypedDebugNodeRef<MDScope> MDScopeRef;
typedef TypedDebugNodeRef<MDType> MDTypeRef;
class MDTypeRefArray {
const MDTuple *N = nullptr;
public:
MDTypeRefArray(const MDTuple *N) : N(N) {}
operator MDTuple *() const { return const_cast<MDTuple *>(N); }
MDTuple *operator->() const { return const_cast<MDTuple *>(N); }
MDTuple &operator*() const { return *const_cast<MDTuple *>(N); }
unsigned size() const { return N->getNumOperands(); }
MDTypeRef operator[](unsigned I) const { return MDTypeRef(N->getOperand(I)); }
class iterator : std::iterator<std::input_iterator_tag, MDTypeRef,
std::ptrdiff_t, void, MDTypeRef> {
MDNode::op_iterator I;
public:
explicit iterator(MDNode::op_iterator I) : I(I) {}
MDTypeRef operator*() const { return MDTypeRef(*I); }
iterator &operator++() {
++I;
return *this;
}
iterator operator++(int) {
iterator Temp(*this);
++I;
return Temp;
}
bool operator==(const iterator &X) const { return I == X.I; }
bool operator!=(const iterator &X) const { return I != X.I; }
};
iterator begin() const { return iterator(N->op_begin()); }
iterator end() const { return iterator(N->op_end()); }
};
/// \brief Tagged DWARF-like metadata node.
///
/// A metadata node with a DWARF tag (i.e., a constant named \c DW_TAG_*,
@ -826,7 +862,7 @@ public:
TempMDSubroutineType clone() const { return cloneImpl(); }
MDTuple *getTypeArray() const { return getElements(); }
MDTypeRefArray getTypeArray() const { return getElements(); }
Metadata *getRawTypeArray() const { return getRawElements(); }
static bool classof(const Metadata *MD) {