| /* Copyright 2020 Google LLC. 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 RUY_RUY_CPUINFO_H_ |
| #define RUY_RUY_CPUINFO_H_ |
| |
| #include "ruy/cpu_cache_params.h" |
| |
| namespace ruy { |
| |
| // Wraps the functionality that ruy needs from the cpuinfo library. |
| class CpuInfo final { |
| public: |
| CpuInfo() {} |
| ~CpuInfo(); |
| |
| // ARM features |
| bool NeonDotprod(); |
| |
| // X86 features |
| bool Sse42(); |
| bool Avx(); |
| bool Avx2Fma(); |
| bool Avx512(); |
| bool AvxVnni(); |
| |
| // Common features |
| const CpuCacheParams& CacheParams(); |
| bool CurrentCpuIsA55ish(); |
| bool CurrentCpuIsX1(); |
| |
| private: |
| enum class InitStatus { |
| kNotYetAttempted, |
| kInitialized, |
| kFailed, |
| }; |
| |
| InitStatus init_status_ = InitStatus::kNotYetAttempted; |
| CpuCacheParams cache_params_; |
| |
| bool EnsureInitialized(); |
| InitStatus Initialize(); |
| |
| CpuInfo(const CpuInfo&) = delete; |
| }; |
| |
| } // namespace ruy |
| |
| #endif // RUY_RUY_CPUINFO_H_ |