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Made the TensorIndexList usable on GPU without having to use the -relaxed-constexpr compilation flag

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This commit is contained in:
Benoit Steiner 2016-02-26 12:38:18 -08:00
parent 93485d86bc
commit caa54d888f
1 changed files with 46 additions and 46 deletions
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92
unsupported/Eigen/CXX11/src/Tensor/TensorIndexList.h
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@ -39,19 +39,19 @@ namespace Eigen {
template <DenseIndex n>
struct type2index {
static const DenseIndex value = n;
constexpr operator DenseIndex() const { return n; }
void set(DenseIndex val) {
EIGEN_DEVICE_FUNC constexpr operator DenseIndex() const { return n; }
EIGEN_DEVICE_FUNC void set(DenseIndex val) {
eigen_assert(val == n);
}
};
namespace internal {
template <typename T>
void update_value(T& val, DenseIndex new_val) {
EIGEN_DEVICE_FUNC void update_value(T& val, DenseIndex new_val) {
val = new_val;
}
template <DenseIndex n>
void update_value(type2index<n>& val, DenseIndex new_val) {
EIGEN_DEVICE_FUNC void update_value(type2index<n>& val, DenseIndex new_val) {
val.set(new_val);
}
@ -85,8 +85,8 @@ struct IndexTuple;
template<typename T, typename... O>
struct IndexTuple<T, O...> {
constexpr IndexTuple() : head(), others() { }
constexpr IndexTuple(const T& v, const O... o) : head(v), others(o...) { }
EIGEN_DEVICE_FUNC constexpr IndexTuple() : head(), others() { }
EIGEN_DEVICE_FUNC constexpr IndexTuple(const T& v, const O... o) : head(v), others(o...) { }
constexpr static int count = 1 + sizeof...(O);
T head;
@ -97,8 +97,8 @@ struct IndexTuple<T, O...> {
template<typename T>
struct IndexTuple<T> {
constexpr IndexTuple() : head() { }
constexpr IndexTuple(const T& v) : head(v) { }
EIGEN_DEVICE_FUNC constexpr IndexTuple() : head() { }
EIGEN_DEVICE_FUNC constexpr IndexTuple(const T& v) : head(v) { }
constexpr static int count = 1;
T head;
@ -114,33 +114,33 @@ struct IndexTupleExtractor<N, T, O...> {
typedef typename IndexTupleExtractor<N-1, O...>::ValType ValType;
static constexpr ValType& get_val(IndexTuple<T, O...>& val) {
EIGEN_DEVICE_FUNC static constexpr ValType& get_val(IndexTuple<T, O...>& val) {
return IndexTupleExtractor<N-1, O...>::get_val(val.others);
}
static constexpr const ValType& get_val(const IndexTuple<T, O...>& val) {
EIGEN_DEVICE_FUNC static constexpr const ValType& get_val(const IndexTuple<T, O...>& val) {
return IndexTupleExtractor<N-1, O...>::get_val(val.others);
}
template <typename V>
static void set_val(IndexTuple<T, O...>& val, V& new_val) {
EIGEN_DEVICE_FUNC static void set_val(IndexTuple<T, O...>& val, V& new_val) {
IndexTupleExtractor<N-1, O...>::set_val(val.others, new_val);
}
};
template<typename T, typename... O>
struct IndexTupleExtractor<0, T, O...> {
template<typename T, typename... O>
struct IndexTupleExtractor<0, T, O...> {
typedef T ValType;
typedef T ValType;
static constexpr ValType& get_val(IndexTuple<T, O...>& val) {
EIGEN_DEVICE_FUNC static constexpr ValType& get_val(IndexTuple<T, O...>& val) {
return val.head;
}
static constexpr const ValType& get_val(const IndexTuple<T, O...>& val) {
EIGEN_DEVICE_FUNC static constexpr const ValType& get_val(const IndexTuple<T, O...>& val) {
return val.head;
}
template <typename V>
static void set_val(IndexTuple<T, O...>& val, V& new_val) {
EIGEN_DEVICE_FUNC static void set_val(IndexTuple<T, O...>& val, V& new_val) {
val.head = new_val;
}
};
@ -148,11 +148,11 @@ struct IndexTupleExtractor<N, T, O...> {
template <int N, typename T, typename... O>
constexpr typename IndexTupleExtractor<N, T, O...>::ValType& array_get(IndexTuple<T, O...>& tuple) {
EIGEN_DEVICE_FUNC constexpr typename IndexTupleExtractor<N, T, O...>::ValType& array_get(IndexTuple<T, O...>& tuple) {
return IndexTupleExtractor<N, T, O...>::get_val(tuple);
}
template <int N, typename T, typename... O>
constexpr const typename IndexTupleExtractor<N, T, O...>::ValType& array_get(const IndexTuple<T, O...>& tuple) {
EIGEN_DEVICE_FUNC constexpr const typename IndexTupleExtractor<N, T, O...>::ValType& array_get(const IndexTuple<T, O...>& tuple) {
return IndexTupleExtractor<N, T, O...>::get_val(tuple);
}
template <typename T, typename... O>
@ -170,11 +170,11 @@ template <typename T, typename... O>
template <DenseIndex Idx>
struct tuple_coeff {
template <typename... T>
static constexpr DenseIndex get(const DenseIndex i, const IndexTuple<T...>& t) {
EIGEN_DEVICE_FUNC static constexpr DenseIndex get(const DenseIndex i, const IndexTuple<T...>& t) {
return array_get<Idx>(t) * (i == Idx) + tuple_coeff<Idx-1>::get(i, t) * (i != Idx);
}
template <typename... T>
static void set(const DenseIndex i, IndexTuple<T...>& t, const DenseIndex value) {
EIGEN_DEVICE_FUNC static void set(const DenseIndex i, IndexTuple<T...>& t, const DenseIndex value) {
if (i == Idx) {
update_value(array_get<Idx>(t), value);
} else {
@ -183,19 +183,19 @@ struct tuple_coeff {
}
template <typename... T>
static constexpr bool value_known_statically(const DenseIndex i, const IndexTuple<T...>& t) {
EIGEN_DEVICE_FUNC static constexpr bool value_known_statically(const DenseIndex i, const IndexTuple<T...>& t) {
return ((i == Idx) & is_compile_time_constant<typename IndexTupleExtractor<Idx, T...>::ValType>::value) ||
tuple_coeff<Idx-1>::value_known_statically(i, t);
}
template <typename... T>
static constexpr bool values_up_to_known_statically(const IndexTuple<T...>& t) {
EIGEN_DEVICE_FUNC static constexpr bool values_up_to_known_statically(const IndexTuple<T...>& t) {
return is_compile_time_constant<typename IndexTupleExtractor<Idx, T...>::ValType>::value &&
tuple_coeff<Idx-1>::values_up_to_known_statically(t);
}
template <typename... T>
static constexpr bool values_up_to_statically_known_to_increase(const IndexTuple<T...>& t) {
EIGEN_DEVICE_FUNC static constexpr bool values_up_to_statically_known_to_increase(const IndexTuple<T...>& t) {
return is_compile_time_constant<typename IndexTupleExtractor<Idx, T...>::ValType>::value &&
is_compile_time_constant<typename IndexTupleExtractor<Idx, T...>::ValType>::value &&
array_get<Idx>(t) > array_get<Idx-1>(t) &&
@ -206,27 +206,27 @@ struct tuple_coeff {
template <>
struct tuple_coeff<0> {
template <typename... T>
static constexpr DenseIndex get(const DenseIndex i, const IndexTuple<T...>& t) {
EIGEN_DEVICE_FUNC static constexpr DenseIndex get(const DenseIndex i, const IndexTuple<T...>& t) {
// eigen_assert (i == 0); // gcc fails to compile assertions in constexpr
return array_get<0>(t) * (i == 0);
}
template <typename... T>
static void set(const DenseIndex i, IndexTuple<T...>& t, const DenseIndex value) {
EIGEN_DEVICE_FUNC static void set(const DenseIndex i, IndexTuple<T...>& t, const DenseIndex value) {
eigen_assert (i == 0);
update_value(array_get<0>(t), value);
}
template <typename... T>
static constexpr bool value_known_statically(const DenseIndex i, const IndexTuple<T...>&) {
EIGEN_DEVICE_FUNC static constexpr bool value_known_statically(const DenseIndex i, const IndexTuple<T...>&) {
return is_compile_time_constant<typename IndexTupleExtractor<0, T...>::ValType>::value & (i == 0);
}
template <typename... T>
static constexpr bool values_up_to_known_statically(const IndexTuple<T...>&) {
EIGEN_DEVICE_FUNC static constexpr bool values_up_to_known_statically(const IndexTuple<T...>&) {
return is_compile_time_constant<typename IndexTupleExtractor<0, T...>::ValType>::value;
}
template <typename... T>
static constexpr bool values_up_to_statically_known_to_increase(const IndexTuple<T...>&) {
EIGEN_DEVICE_FUNC static constexpr bool values_up_to_statically_known_to_increase(const IndexTuple<T...>&) {
return true;
}
};
@ -235,7 +235,7 @@ struct tuple_coeff<0> {
template<typename FirstType, typename... OtherTypes>
struct IndexList : internal::IndexTuple<FirstType, OtherTypes...> {
struct IndexList : internal::IndexTuple<FirstType, OtherTypes...> {
EIGEN_STRONG_INLINE EIGEN_DEVICE_FUNC constexpr DenseIndex operator[] (const DenseIndex i) const {
return internal::tuple_coeff<internal::array_size<internal::IndexTuple<FirstType, OtherTypes...> >::value-1>::get(i, *this);
}
@ -246,18 +246,18 @@ template<typename FirstType, typename... OtherTypes>
return internal::tuple_coeff<internal::array_size<internal::IndexTuple<FirstType, OtherTypes...> >::value-1>::set(i, *this, value);
}
constexpr IndexList(const internal::IndexTuple<FirstType, OtherTypes...>& other) : internal::IndexTuple<FirstType, OtherTypes...>(other) { }
constexpr IndexList(FirstType& first, OtherTypes... other) : internal::IndexTuple<FirstType, OtherTypes...>(first, other...) { }
constexpr IndexList() : internal::IndexTuple<FirstType, OtherTypes...>() { }
EIGEN_DEVICE_FUNC constexpr IndexList(const internal::IndexTuple<FirstType, OtherTypes...>& other) : internal::IndexTuple<FirstType, OtherTypes...>(other) { }
EIGEN_DEVICE_FUNC constexpr IndexList(FirstType& first, OtherTypes... other) : internal::IndexTuple<FirstType, OtherTypes...>(first, other...) { }
EIGEN_DEVICE_FUNC constexpr IndexList() : internal::IndexTuple<FirstType, OtherTypes...>() { }
constexpr bool value_known_statically(const DenseIndex i) const {
EIGEN_DEVICE_FUNC constexpr bool value_known_statically(const DenseIndex i) const {
return internal::tuple_coeff<internal::array_size<internal::IndexTuple<FirstType, OtherTypes...> >::value-1>::value_known_statically(i, *this);
}
constexpr bool all_values_known_statically() const {
EIGEN_DEVICE_FUNC constexpr bool all_values_known_statically() const {
return internal::tuple_coeff<internal::array_size<internal::IndexTuple<FirstType, OtherTypes...> >::value-1>::values_up_to_known_statically(*this);
}
constexpr bool values_statically_known_to_increase() const {
EIGEN_DEVICE_FUNC constexpr bool values_statically_known_to_increase() const {
return internal::tuple_coeff<internal::array_size<internal::IndexTuple<FirstType, OtherTypes...> >::value-1>::values_up_to_statically_known_to_increase(*this);
}
};
@ -286,30 +286,30 @@ template<typename FirstType, typename... OtherTypes> struct array_size<const Ind
static const size_t value = array_size<IndexTuple<FirstType, OtherTypes...> >::value;
};
template<DenseIndex N, typename FirstType, typename... OtherTypes> constexpr DenseIndex array_get(IndexList<FirstType, OtherTypes...>& a) {
template<DenseIndex N, typename FirstType, typename... OtherTypes> EIGEN_DEVICE_FUNC constexpr DenseIndex array_get(IndexList<FirstType, OtherTypes...>& a) {
return IndexTupleExtractor<N, FirstType, OtherTypes...>::get_val(a);
}
template<DenseIndex N, typename FirstType, typename... OtherTypes> constexpr DenseIndex array_get(const IndexList<FirstType, OtherTypes...>& a) {
template<DenseIndex N, typename FirstType, typename... OtherTypes> EIGEN_DEVICE_FUNC constexpr DenseIndex array_get(const IndexList<FirstType, OtherTypes...>& a) {
return IndexTupleExtractor<N, FirstType, OtherTypes...>::get_val(a);
}
template <typename T>
struct index_known_statically_impl {
static constexpr bool run(const DenseIndex) {
EIGEN_DEVICE_FUNC static constexpr bool run(const DenseIndex) {
return false;
}
};
template <typename FirstType, typename... OtherTypes>
struct index_known_statically_impl<IndexList<FirstType, OtherTypes...> > {
static constexpr bool run(const DenseIndex i) {
EIGEN_DEVICE_FUNC static constexpr bool run(const DenseIndex i) {
return IndexList<FirstType, OtherTypes...>().value_known_statically(i);
}
};
template <typename FirstType, typename... OtherTypes>
struct index_known_statically_impl<const IndexList<FirstType, OtherTypes...> > {
static constexpr bool run(const DenseIndex i) {
EIGEN_DEVICE_FUNC static constexpr bool run(const DenseIndex i) {
return IndexList<FirstType, OtherTypes...>().value_known_statically(i);
}
};
@ -324,14 +324,14 @@ struct all_indices_known_statically_impl {
template <typename FirstType, typename... OtherTypes>
struct all_indices_known_statically_impl<IndexList<FirstType, OtherTypes...> > {
static constexpr bool run() {
EIGEN_DEVICE_FUNC static constexpr bool run() {
return IndexList<FirstType, OtherTypes...>().all_values_known_statically();
}
};
template <typename FirstType, typename... OtherTypes>
struct all_indices_known_statically_impl<const IndexList<FirstType, OtherTypes...> > {
static constexpr bool run() {
EIGEN_DEVICE_FUNC static constexpr bool run() {
return IndexList<FirstType, OtherTypes...>().all_values_known_statically();
}
};
@ -339,21 +339,21 @@ struct all_indices_known_statically_impl<const IndexList<FirstType, OtherTypes..
template <typename T>
struct indices_statically_known_to_increase_impl {
static constexpr bool run() {
EIGEN_DEVICE_FUNC static constexpr bool run() {
return false;
}
};
template <typename FirstType, typename... OtherTypes>
struct indices_statically_known_to_increase_impl<IndexList<FirstType, OtherTypes...> > {
static constexpr bool run() {
EIGEN_DEVICE_FUNC static constexpr bool run() {
return Eigen::IndexList<FirstType, OtherTypes...>().values_statically_known_to_increase();
}
};
template <typename FirstType, typename... OtherTypes>
struct indices_statically_known_to_increase_impl<const IndexList<FirstType, OtherTypes...> > {
static constexpr bool run() {
EIGEN_DEVICE_FUNC static constexpr bool run() {
return Eigen::IndexList<FirstType, OtherTypes...>().values_statically_known_to_increase();
}
};