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* Copyright (c) 2022-2025, NVIDIA CORPORATION. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef FLASHINFER_ARCH_CONDITION_H_
#define FLASHINFER_ARCH_CONDITION_H_
namespace flashinfer {
namespace detail {
#ifdef __CUDA_ARCH__
#ifdef __CUDA_ARCH_SPECIFIC__
static constexpr bool isArchSpecific = true;
#else
static constexpr bool isArchSpecific = false;
#endif
struct arch_info {
static constexpr bool mIsDevice = true;
static constexpr bool mArchSpecific = isArchSpecific;
static constexpr int mMajor = __CUDA_ARCH__ / 100;
static constexpr int mMinor = __CUDA_ARCH__ / 10 % 10;
static constexpr int mArch = __CUDA_ARCH__ / 10;
};
#else
struct arch_info {
static constexpr bool mIsDevice = false;
static constexpr bool mArchSpecific = false;
static constexpr int mMajor = 0;
static constexpr int mMinor = 0;
static constexpr int mArch = 0;
};
#endif
#if __CUDA_ARCH__ >= 900
#if CUDA_VERSION >= 12090
#if !defined(__CUDA_ARCH_SPECIFIC__) && !defined(__CUDA_ARCH_FAMILY_SPECIFIC__)
#error \
"Compiling for SM90 or newer architectures must use Arch specific or Arch Family specific target"
#endif
#endif
#endif
} // namespace detail
namespace arch {
struct is_device : std::bool_constant<detail::arch_info::mIsDevice> {};
struct is_arch_specific : std::bool_constant<detail::arch_info::mArchSpecific> {};
template <int Arch>
struct is_match : std::bool_constant<is_device::value && detail::arch_info::mArch == Arch> {};
template <int Major>
struct is_major : std::bool_constant<is_device::value && detail::arch_info::mMajor == Major> {};
template <int Arch>
struct is_compatible
: std::bool_constant<is_major<Arch>::value && detail::arch_info::mArch >= Arch> {};
inline constexpr bool is_device_v = is_device::value;
inline constexpr bool is_arch_specific_v = is_arch_specific::value;
template <int Arch>
inline constexpr bool is_match_v = is_match<Arch>::value;
template <int Major>
inline constexpr bool is_major_v = is_major<Major>::value;
template <int Arch>
inline constexpr bool is_compatible_v = is_compatible<Arch>::value;
} // namespace arch
} // namespace flashinfer
#endif // FLASHINFER_ARCH_CONDITION_H_
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