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Add front/back accessors to indexed_accessor_range.

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These map to the similar accessors on ArrayRef and other random access containers.

This fixes a compilation error on MLIR ODS for variadic operands/results, which relied on the availability of front in certain situations.
This commit is contained in:
River Riddle 2020-06-29 22:37:05 -07:00
parent c1e656184f
commit 986143ca63
1 changed files with 8 additions and 0 deletions
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8
include/llvm/ADT/STLExtras.h
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@ -1121,6 +1121,14 @@ public:
assert(index < size() && "invalid index for value range");
return DerivedT::dereference_iterator(base, index);
}
ReferenceT front() const {
assert(!empty() && "expected non-empty range");
return (*this)[0];
}
ReferenceT back() const {
assert(!empty() && "expected non-empty range");
return (*this)[size() - 1];
}
/// Compare this range with another.
template <typename OtherT> bool operator==(const OtherT &other) const {