#ifndef LLVM_SUPPORT_ALIGNOF_H
#define LLVM_SUPPORT_ALIGNOF_H
#include <cstddef>
namespace objc {
template <typename T>
struct AlignmentCalcImpl {
char x;
T t;
private:
AlignmentCalcImpl() {} };
template <typename T>
struct AlignOf {
enum { Alignment =
static_cast<unsigned int>(sizeof(AlignmentCalcImpl<T>) - sizeof(T)) };
enum { Alignment_GreaterEqual_2Bytes = Alignment >= 2 ? 1 : 0 };
enum { Alignment_GreaterEqual_4Bytes = Alignment >= 4 ? 1 : 0 };
enum { Alignment_GreaterEqual_8Bytes = Alignment >= 8 ? 1 : 0 };
enum { Alignment_GreaterEqual_16Bytes = Alignment >= 16 ? 1 : 0 };
enum { Alignment_LessEqual_2Bytes = Alignment <= 2 ? 1 : 0 };
enum { Alignment_LessEqual_4Bytes = Alignment <= 4 ? 1 : 0 };
enum { Alignment_LessEqual_8Bytes = Alignment <= 8 ? 1 : 0 };
enum { Alignment_LessEqual_16Bytes = Alignment <= 16 ? 1 : 0 };
};
template <typename T>
inline unsigned alignOf() { return AlignOf<T>::Alignment; }
template <size_t Alignment> struct AlignedCharArrayImpl;
#ifndef _MSC_VER
#if __has_feature(cxx_alignas)
#define LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(x) \
template <> struct AlignedCharArrayImpl<x> { \
char aligned alignas(x); \
}
#elif defined(__GNUC__)
#define LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(x) \
template <> struct AlignedCharArrayImpl<x> { \
char aligned __attribute__((aligned(x))); \
}
#else
# error No supported align as directive.
#endif
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(1);
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(2);
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(4);
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(8);
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(16);
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(32);
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(64);
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(128);
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(512);
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(1024);
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(2048);
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(4096);
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(8192);
#undef LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT
#else // _MSC_VER
template <> struct AlignedCharArrayImpl<1> { char aligned; };
template <> struct AlignedCharArrayImpl<2> { short aligned; };
template <> struct AlignedCharArrayImpl<4> { int aligned; };
template <> struct AlignedCharArrayImpl<8> { double aligned; };
#define LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(x) \
template <> struct AlignedCharArrayImpl<x> { \
__declspec(align(x)) char aligned; \
}
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(16);
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(32);
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(64);
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(128);
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(512);
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(1024);
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(2048);
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(4096);
LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(8192);
#undef LLVM_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT
#endif // _MSC_VER
template <typename T1,
typename T2 = char, typename T3 = char, typename T4 = char>
union AlignedCharArrayUnion {
private:
class AlignerImpl {
T1 t1; T2 t2; T3 t3; T4 t4;
AlignerImpl(); };
union SizerImpl {
char arr1[sizeof(T1)], arr2[sizeof(T2)], arr3[sizeof(T3)], arr4[sizeof(T4)];
};
public:
char buffer[sizeof(SizerImpl)];
private:
AlignedCharArrayImpl<AlignOf<AlignerImpl>::Alignment> nonce_member;
};
} #endif