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[ADT] Remove a workaround for old versions of clang

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llvm-svn: 371856
This commit is contained in:
Benjamin Kramer 2019-09-13 13:47:49 +00:00
parent 11f18d5eba
commit a051ec5aef
1 changed files with 1 additions and 27 deletions
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28
include/llvm/ADT/DenseMap.h
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@ -38,33 +38,7 @@ namespace detail {
// implementation without requiring two members.
template <typename KeyT, typename ValueT>
struct DenseMapPair : public std::pair<KeyT, ValueT> {
// FIXME: Switch to inheriting constructors when we drop support for older
// clang versions.
// NOTE: This default constructor is declared with '{}' rather than
// '= default' to work around a separate bug in clang-3.8. This can
// also go when we switch to inheriting constructors.
DenseMapPair() {}
DenseMapPair(const KeyT &Key, const ValueT &Value)
: std::pair<KeyT, ValueT>(Key, Value) {}
DenseMapPair(KeyT &&Key, ValueT &&Value)
: std::pair<KeyT, ValueT>(std::move(Key), std::move(Value)) {}
template <typename AltKeyT, typename AltValueT>
DenseMapPair(AltKeyT &&AltKey, AltValueT &&AltValue,
typename std::enable_if<
std::is_convertible<AltKeyT, KeyT>::value &&
std::is_convertible<AltValueT, ValueT>::value>::type * = 0)
: std::pair<KeyT, ValueT>(std::forward<AltKeyT>(AltKey),
std::forward<AltValueT>(AltValue)) {}
template <typename AltPairT>
DenseMapPair(AltPairT &&AltPair,
typename std::enable_if<std::is_convertible<
AltPairT, std::pair<KeyT, ValueT>>::value>::type * = nullptr)
: std::pair<KeyT, ValueT>(std::forward<AltPairT>(AltPair)) {}
using std::pair<KeyT, ValueT>::pair;
KeyT &getFirst() { return std::pair<KeyT, ValueT>::first; }
const KeyT &getFirst() const { return std::pair<KeyT, ValueT>::first; }