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* [gcc r13-6908] libstdc++: Add missing trait is_simd_flag_type
@ 2023-03-28 14:43 Matthias Kretz
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From: Matthias Kretz @ 2023-03-28 14:43 UTC (permalink / raw)
To: gcc-cvs, libstdc++-cvs
https://gcc.gnu.org/g:97383b4116ea63486eb5bfb0a7140871bed75fb4
commit r13-6908-g97383b4116ea63486eb5bfb0a7140871bed75fb4
Author: Matthias Kretz <m.kretz@gsi.de>
Date: Wed Mar 22 08:12:08 2023 +0100
libstdc++: Add missing trait is_simd_flag_type
Signed-off-by: Matthias Kretz <m.kretz@gsi.de>
libstdc++-v3/ChangeLog:
* include/experimental/bits/simd.h (is_simd_flag_type): New.
(_IsSimdFlagType): New.
(copy_from, copy_to, load ctors): Constrain _Flags using
_IsSimdFlagType.
Diff:
---
libstdc++-v3/include/experimental/bits/simd.h | 52 ++++++++++++++++++++-------
1 file changed, 39 insertions(+), 13 deletions(-)
diff --git a/libstdc++-v3/include/experimental/bits/simd.h b/libstdc++-v3/include/experimental/bits/simd.h
index 4df446654ac..224153ffbaf 100644
--- a/libstdc++-v3/include/experimental/bits/simd.h
+++ b/libstdc++-v3/include/experimental/bits/simd.h
@@ -2837,6 +2837,32 @@ template <typename _Tp>
} // namespace simd_abi
// traits {{{1
+template <typename _Tp>
+ struct is_simd_flag_type
+ : false_type
+ {};
+
+template <>
+ struct is_simd_flag_type<element_aligned_tag>
+ : true_type
+ {};
+
+template <>
+ struct is_simd_flag_type<vector_aligned_tag>
+ : true_type
+ {};
+
+template <size_t _Np>
+ struct is_simd_flag_type<overaligned_tag<_Np>>
+ : __bool_constant<(_Np > 0) and __has_single_bit(_Np)>
+ {};
+
+template <typename _Tp>
+ inline constexpr bool is_simd_flag_type_v = is_simd_flag_type<_Tp>::value;
+
+template <typename _Tp, typename = enable_if_t<is_simd_flag_type_v<_Tp>>>
+ using _IsSimdFlagType = _Tp;
+
// is_abi_tag {{{2
template <typename _Tp, typename = void_t<>>
struct is_abi_tag : false_type {};
@@ -3308,7 +3334,7 @@ template <typename _M, typename _Tp>
template <typename _Up, typename _Flags>
[[nodiscard]] _GLIBCXX_SIMD_INTRINSIC _V
- copy_from(const _LoadStorePtr<_Up, value_type>* __mem, _Flags) const&&
+ copy_from(const _LoadStorePtr<_Up, value_type>* __mem, _IsSimdFlagType<_Flags>) const&&
{
return {__private_init,
_Impl::_S_masked_load(__data(_M_value), __data(_M_k),
@@ -3317,7 +3343,7 @@ template <typename _M, typename _Tp>
template <typename _Up, typename _Flags>
_GLIBCXX_SIMD_INTRINSIC void
- copy_to(_LoadStorePtr<_Up, value_type>* __mem, _Flags) const&&
+ copy_to(_LoadStorePtr<_Up, value_type>* __mem, _IsSimdFlagType<_Flags>) const&&
{
_Impl::_S_masked_store(__data(_M_value),
_Flags::template _S_apply<_V>(__mem),
@@ -3363,12 +3389,12 @@ template <typename _Tp>
template <typename _Up, typename _Flags>
[[nodiscard]] _GLIBCXX_SIMD_INTRINSIC _V
- copy_from(const _LoadStorePtr<_Up, value_type>* __mem, _Flags) const&&
+ copy_from(const _LoadStorePtr<_Up, value_type>* __mem, _IsSimdFlagType<_Flags>) const&&
{ return _M_k ? static_cast<_V>(__mem[0]) : _M_value; }
template <typename _Up, typename _Flags>
_GLIBCXX_SIMD_INTRINSIC void
- copy_to(_LoadStorePtr<_Up, value_type>* __mem, _Flags) const&&
+ copy_to(_LoadStorePtr<_Up, value_type>* __mem, _IsSimdFlagType<_Flags>) const&&
{
if (_M_k)
__mem[0] = _M_value;
@@ -3466,7 +3492,7 @@ template <typename _M, typename _Tp>
// intentionally hides const_where_expression::copy_from
template <typename _Up, typename _Flags>
_GLIBCXX_SIMD_INTRINSIC void
- copy_from(const _LoadStorePtr<_Up, value_type>* __mem, _Flags) &&
+ copy_from(const _LoadStorePtr<_Up, value_type>* __mem, _IsSimdFlagType<_Flags>) &&
{
__data(_M_value) = _Impl::_S_masked_load(__data(_M_value), __data(_M_k),
_Flags::template _S_apply<_Tp>(__mem));
@@ -3529,7 +3555,7 @@ template <typename _Tp>
// intentionally hides const_where_expression::copy_from
template <typename _Up, typename _Flags>
_GLIBCXX_SIMD_INTRINSIC void
- copy_from(const _LoadStorePtr<_Up, value_type>* __mem, _Flags) &&
+ copy_from(const _LoadStorePtr<_Up, value_type>* __mem, _IsSimdFlagType<_Flags>) &&
{ if (_M_k) _M_value = __mem[0]; }
};
@@ -4574,12 +4600,12 @@ template <typename _Tp, typename _Abi>
// load constructor {{{
template <typename _Flags>
_GLIBCXX_SIMD_ALWAYS_INLINE
- simd_mask(const value_type* __mem, _Flags)
+ simd_mask(const value_type* __mem, _IsSimdFlagType<_Flags>)
: _M_data(_Impl::template _S_load<_Ip>(_Flags::template _S_apply<simd_mask>(__mem))) {}
template <typename _Flags>
_GLIBCXX_SIMD_ALWAYS_INLINE
- simd_mask(const value_type* __mem, simd_mask __k, _Flags)
+ simd_mask(const value_type* __mem, simd_mask __k, _IsSimdFlagType<_Flags>)
: _M_data{}
{
_M_data = _Impl::_S_masked_load(_M_data, __k._M_data,
@@ -4590,14 +4616,14 @@ template <typename _Tp, typename _Abi>
// loads [simd_mask.load] {{{
template <typename _Flags>
_GLIBCXX_SIMD_ALWAYS_INLINE void
- copy_from(const value_type* __mem, _Flags)
+ copy_from(const value_type* __mem, _IsSimdFlagType<_Flags>)
{ _M_data = _Impl::template _S_load<_Ip>(_Flags::template _S_apply<simd_mask>(__mem)); }
// }}}
// stores [simd_mask.store] {{{
template <typename _Flags>
_GLIBCXX_SIMD_ALWAYS_INLINE void
- copy_to(value_type* __mem, _Flags) const
+ copy_to(value_type* __mem, _IsSimdFlagType<_Flags>) const
{ _Impl::_S_store(_M_data, _Flags::template _S_apply<simd_mask>(__mem)); }
// }}}
@@ -5210,7 +5236,7 @@ template <typename _Tp, typename _Abi>
// load constructor
template <typename _Up, typename _Flags>
_GLIBCXX_SIMD_ALWAYS_INLINE
- simd(const _Up* __mem, _Flags)
+ simd(const _Up* __mem, _IsSimdFlagType<_Flags>)
: _M_data(
_Impl::_S_load(_Flags::template _S_apply<simd>(__mem), _S_type_tag))
{}
@@ -5218,7 +5244,7 @@ template <typename _Tp, typename _Abi>
// loads [simd.load]
template <typename _Up, typename _Flags>
_GLIBCXX_SIMD_ALWAYS_INLINE void
- copy_from(const _Vectorizable<_Up>* __mem, _Flags)
+ copy_from(const _Vectorizable<_Up>* __mem, _IsSimdFlagType<_Flags>)
{
_M_data = static_cast<decltype(_M_data)>(
_Impl::_S_load(_Flags::template _S_apply<simd>(__mem), _S_type_tag));
@@ -5227,7 +5253,7 @@ template <typename _Tp, typename _Abi>
// stores [simd.store]
template <typename _Up, typename _Flags>
_GLIBCXX_SIMD_ALWAYS_INLINE void
- copy_to(_Vectorizable<_Up>* __mem, _Flags) const
+ copy_to(_Vectorizable<_Up>* __mem, _IsSimdFlagType<_Flags>) const
{
_Impl::_S_store(_M_data, _Flags::template _S_apply<simd>(__mem),
_S_type_tag);
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