#ifndef LLVM_ADT_DENSEMAPINFO_H
#define LLVM_ADT_DENSEMAPINFO_H
#include "llvm/Support/PointerLikeTypeTraits.h"
#include "llvm/Support/type_traits.h"
#include <tuple>
namespace llvm {
template<typename T>
struct DenseMapInfo {
};
template<typename T>
struct DenseMapInfo<T*> {
static inline T* getEmptyKey() {
uintptr_t Val = static_cast<uintptr_t>(-1);
Val <<= PointerLikeTypeTraits<T*>::NumLowBitsAvailable;
return reinterpret_cast<T*>(Val);
}
static inline T* getTombstoneKey() {
uintptr_t Val = static_cast<uintptr_t>(-2);
Val <<= PointerLikeTypeTraits<T*>::NumLowBitsAvailable;
return reinterpret_cast<T*>(Val);
}
static unsigned getHashValue(const T *PtrVal) {
return (unsigned((uintptr_t)PtrVal) >> 4) ^
(unsigned((uintptr_t)PtrVal) >> 9);
}
static bool isEqual(const T *LHS, const T *RHS) { return LHS == RHS; }
};
template<> struct DenseMapInfo<char> {
static inline char getEmptyKey() { return ~0; }
static inline char getTombstoneKey() { return ~0 - 1; }
static unsigned getHashValue(const char& Val) { return Val * 37U; }
static bool isEqual(const char &LHS, const char &RHS) {
return LHS == RHS;
}
};
template<> struct DenseMapInfo<unsigned> {
static inline unsigned getEmptyKey() { return ~0U; }
static inline unsigned getTombstoneKey() { return ~0U - 1; }
static unsigned getHashValue(const unsigned& Val) { return Val * 37U; }
static bool isEqual(const unsigned& LHS, const unsigned& RHS) {
return LHS == RHS;
}
};
template<> struct DenseMapInfo<unsigned long> {
static inline unsigned long getEmptyKey() { return ~0UL; }
static inline unsigned long getTombstoneKey() { return ~0UL - 1L; }
static unsigned getHashValue(const unsigned long& Val) {
return (unsigned)(Val * 37UL);
}
static bool isEqual(const unsigned long& LHS, const unsigned long& RHS) {
return LHS == RHS;
}
};
template<> struct DenseMapInfo<unsigned long long> {
static inline unsigned long long getEmptyKey() { return ~0ULL; }
static inline unsigned long long getTombstoneKey() { return ~0ULL - 1ULL; }
static unsigned getHashValue(const unsigned long long& Val) {
return (unsigned)(Val * 37ULL);
}
static bool isEqual(const unsigned long long& LHS,
const unsigned long long& RHS) {
return LHS == RHS;
}
};
template<> struct DenseMapInfo<int> {
static inline int getEmptyKey() { return 0x7fffffff; }
static inline int getTombstoneKey() { return -0x7fffffff - 1; }
static unsigned getHashValue(const int& Val) { return (unsigned)(Val * 37U); }
static bool isEqual(const int& LHS, const int& RHS) {
return LHS == RHS;
}
};
template<> struct DenseMapInfo<long> {
static inline long getEmptyKey() {
return (1UL << (sizeof(long) * 8 - 1)) - 1UL;
}
static inline long getTombstoneKey() { return getEmptyKey() - 1L; }
static unsigned getHashValue(const long& Val) {
return (unsigned)(Val * 37UL);
}
static bool isEqual(const long& LHS, const long& RHS) {
return LHS == RHS;
}
};
template<> struct DenseMapInfo<long long> {
static inline long long getEmptyKey() { return 0x7fffffffffffffffLL; }
static inline long long getTombstoneKey() { return -0x7fffffffffffffffLL-1; }
static unsigned getHashValue(const long long& Val) {
return (unsigned)(Val * 37ULL);
}
static bool isEqual(const long long& LHS,
const long long& RHS) {
return LHS == RHS;
}
};
static inline unsigned combineHashValue(unsigned a, unsigned b) {
uint64_t key = (uint64_t)a << 32 | (uint64_t)b;
key += ~(key << 32);
key ^= (key >> 22);
key += ~(key << 13);
key ^= (key >> 8);
key += (key << 3);
key ^= (key >> 15);
key += ~(key << 27);
key ^= (key >> 31);
return (unsigned)key;
}
template<typename T, typename U>
struct DenseMapInfo<std::pair<T, U> > {
typedef std::pair<T, U> Pair;
typedef DenseMapInfo<T> FirstInfo;
typedef DenseMapInfo<U> SecondInfo;
static inline Pair getEmptyKey() {
return std::make_pair(FirstInfo::getEmptyKey(),
SecondInfo::getEmptyKey());
}
static inline Pair getTombstoneKey() {
return std::make_pair(FirstInfo::getTombstoneKey(),
SecondInfo::getTombstoneKey());
}
static unsigned getHashValue(const Pair& PairVal) {
return combineHashValue(FirstInfo::getHashValue(PairVal.first),
SecondInfo::getHashValue(PairVal.second));
}
static bool isEqual(const Pair &LHS, const Pair &RHS) {
return FirstInfo::isEqual(LHS.first, RHS.first) &&
SecondInfo::isEqual(LHS.second, RHS.second);
}
};
#if LLVM_HAS_VARIADIC_TEMPLATES
template<typename ...Ts>
struct DenseMapInfo<std::tuple<Ts...> > {
typedef std::tuple<Ts...> Tuple;
template<unsigned N> struct UnsignedC { };
static inline Tuple getEmptyKey() {
return Tuple(DenseMapInfo<Ts>::getEmptyKey()...);
}
static inline Tuple getTombstoneKey() {
return Tuple(DenseMapInfo<Ts>::getTombstoneKey()...);
}
template<unsigned I>
static unsigned getHashValueImpl(const Tuple& values, std::false_type) {
typedef typename std::tuple_element<I, Tuple>::type EltType;
std::integral_constant<bool, I+1 == sizeof...(Ts)> atEnd;
return combineHashValue(
DenseMapInfo<EltType>::getHashValue(std::get<I>(values)),
getHashValueImpl<I+1>(values, atEnd));
}
template<unsigned I>
static unsigned getHashValueImpl(const Tuple& values, std::true_type) {
return 0;
}
static unsigned getHashValue(const std::tuple<Ts...>& values) {
std::integral_constant<bool, 0 == sizeof...(Ts)> atEnd;
return getHashValueImpl<0>(values, atEnd);
}
template<unsigned I>
static bool isEqualImpl(const Tuple &lhs, const Tuple &rhs, std::false_type) {
typedef typename std::tuple_element<I, Tuple>::type EltType;
std::integral_constant<bool, I+1 == sizeof...(Ts)> atEnd;
return DenseMapInfo<EltType>::isEqual(std::get<I>(lhs), std::get<I>(rhs))
&& isEqualImpl<I+1>(lhs, rhs, atEnd);
}
template<unsigned I>
static bool isEqualImpl(const Tuple &lhs, const Tuple &rhs, std::true_type) {
return true;
}
static bool isEqual(const Tuple &lhs, const Tuple &rhs) {
std::integral_constant<bool, 0 == sizeof...(Ts)> atEnd;
return isEqualImpl<0>(lhs, rhs, atEnd);
}
};
#else
template<typename T1>
struct DenseMapInfo<std::tuple<T1> > {
typedef std::tuple<T1> Tuple;
static inline Tuple getEmptyKey() {
return Tuple(DenseMapInfo<T1>::getEmptyKey());
}
static inline Tuple getTombstoneKey() {
return Tuple(DenseMapInfo<T1>::getTombstoneKey());
}
static unsigned getHashValue(const Tuple& values) {
return DenseMapInfo<T1>::getHashValue(std::get<0>(values));
}
static bool isEqual(const Tuple &lhs, const Tuple &rhs) {
return DenseMapInfo<T1>::isEqual(std::get<0>(lhs), std::get<0>(rhs));
}
};
template<typename T1, typename T2>
struct DenseMapInfo<std::tuple<T1, T2> > {
typedef std::tuple<T1, T2> Tuple;
static inline Tuple getEmptyKey() {
return Tuple(DenseMapInfo<T1>::getEmptyKey(),
DenseMapInfo<T2>::getEmptyKey());
}
static inline Tuple getTombstoneKey() {
return Tuple(DenseMapInfo<T1>::getTombstoneKey(),
DenseMapInfo<T2>::getTombstoneKey());
}
static unsigned getHashValue(const Tuple& values) {
return combineHashValue(
DenseMapInfo<T1>::getHashValue(std::get<0>(values)),
DenseMapInfo<T2>::getHashValue(std::get<1>(values)));
}
static bool isEqual(const Tuple &lhs, const Tuple &rhs) {
return DenseMapInfo<T1>::isEqual(std::get<0>(lhs), std::get<0>(rhs)) &&
DenseMapInfo<T2>::isEqual(std::get<1>(lhs), std::get<1>(rhs));
}
};
template<typename T1, typename T2, typename T3>
struct DenseMapInfo<std::tuple<T1, T2, T3> > {
typedef std::tuple<T1, T2, T3> Tuple;
static inline Tuple getEmptyKey() {
return Tuple(DenseMapInfo<T1>::getEmptyKey(),
DenseMapInfo<T2>::getEmptyKey(),
DenseMapInfo<T3>::getEmptyKey());
}
static inline Tuple getTombstoneKey() {
return Tuple(DenseMapInfo<T1>::getTombstoneKey(),
DenseMapInfo<T2>::getTombstoneKey(),
DenseMapInfo<T3>::getTombstoneKey());
}
static unsigned getHashValue(const Tuple& values) {
unsigned result = DenseMapInfo<T1>::getHashValue(std::get<0>(values));
result = combineHashValue(
result,
DenseMapInfo<T2>::getHashValue(std::get<1>(values)));
result = combineHashValue(
result,
DenseMapInfo<T3>::getHashValue(std::get<2>(values)));
return result;
}
static bool isEqual(const Tuple &lhs, const Tuple &rhs) {
return DenseMapInfo<T1>::isEqual(std::get<0>(lhs), std::get<0>(rhs)) &&
DenseMapInfo<T2>::isEqual(std::get<1>(lhs), std::get<1>(rhs)) &&
DenseMapInfo<T3>::isEqual(std::get<2>(lhs), std::get<2>(rhs));
}
};
template<typename T1, typename T2, typename T3, typename T4>
struct DenseMapInfo<std::tuple<T1, T2, T3, T4> > {
typedef std::tuple<T1, T2, T3, T4> Tuple;
static inline Tuple getEmptyKey() {
return Tuple(DenseMapInfo<T1>::getEmptyKey(),
DenseMapInfo<T2>::getEmptyKey(),
DenseMapInfo<T3>::getEmptyKey(),
DenseMapInfo<T4>::getEmptyKey());
}
static inline Tuple getTombstoneKey() {
return Tuple(DenseMapInfo<T1>::getTombstoneKey(),
DenseMapInfo<T2>::getTombstoneKey(),
DenseMapInfo<T3>::getTombstoneKey(),
DenseMapInfo<T4>::getTombstoneKey());
}
static unsigned getHashValue(const Tuple& values) {
unsigned result = DenseMapInfo<T1>::getHashValue(std::get<0>(values));
result = combineHashValue(
result,
DenseMapInfo<T2>::getHashValue(std::get<1>(values)));
result = combineHashValue(
result,
DenseMapInfo<T3>::getHashValue(std::get<2>(values)));
result = combineHashValue(
result,
DenseMapInfo<T4>::getHashValue(std::get<3>(values)));
return result;
}
static bool isEqual(const Tuple &lhs, const Tuple &rhs) {
return DenseMapInfo<T1>::isEqual(std::get<0>(lhs), std::get<0>(rhs)) &&
DenseMapInfo<T2>::isEqual(std::get<1>(lhs), std::get<1>(rhs)) &&
DenseMapInfo<T3>::isEqual(std::get<2>(lhs), std::get<2>(rhs)) &&
DenseMapInfo<T4>::isEqual(std::get<3>(lhs), std::get<3>(rhs));
}
};
#endif
}
#endif