46 lines
847 B
C++
46 lines
847 B
C++
#ifndef ADT
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#define ADT
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#ifdef WITH_NAMESPACE
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namespace llvm {
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#endif
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template <unsigned Alignment, unsigned Size>
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struct AlignedCharArray {
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alignas(Alignment) char buffer[Size];
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};
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template <typename T1>
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class AlignerImpl {
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T1 t1;
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};
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template <typename T1>
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union SizerImpl {
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char arr1[sizeof(T1)];
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};
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template <typename T1>
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struct AlignedCharArrayUnion
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: AlignedCharArray<alignof(AlignerImpl<T1>), sizeof(SizerImpl<T1>)> {};
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template <typename T, unsigned N>
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struct SmallVectorStorage {
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AlignedCharArrayUnion<T> InlineElts[N];
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};
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template <typename T, unsigned N>
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class SmallVector : SmallVectorStorage<T, N> {};
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template <typename T>
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struct OptionalStorage {
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AlignedCharArrayUnion<T> storage;
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};
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template <typename T>
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class Optional {
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OptionalStorage<T> Storage;
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};
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#ifdef WITH_NAMESPACE
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} // namespace llvm
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#endif
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#endif
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