| /* Copyright 2017 The TensorFlow Authors. 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 TENSORFLOW_CONTRIB_LITE_KERNELS_INTERNAL_OPTIMIZED_CPU_CHECK_ |
| #define TENSORFLOW_CONTRIB_LITE_KERNELS_INTERNAL_OPTIMIZED_CPU_CHECK_ |
| |
| namespace tflite { |
| |
| #ifdef __ANDROID__ |
| |
| // Runtime check for Neon support on Android. |
| inline bool TestCPUFeatureNeon() { |
| #if defined(__aarch64__) || defined(__ARM_NEON__) |
| // ARM-64 always has NEON support. |
| return true; |
| #else |
| return false; |
| #endif |
| } |
| |
| #elif defined USE_NEON || defined __ARM_NEON |
| |
| inline bool TestCPUFeatureNeon() { return true; } |
| |
| #else |
| |
| inline bool TestCPUFeatureNeon() { return false; } |
| |
| #endif |
| |
| } // namespace tflite |
| |
| // NEON_OR_PORTABLE(SomeFunc, arcs) calls NeonSomeFunc(args) if Neon is both |
| // enabled at build time and detected at runtime, or PortableSomeFunc(args) |
| // otherwise. |
| #ifdef __ARM_ARCH_5TE__ |
| // Neon isn't available at all on ARMv5. |
| #define NEON_OR_PORTABLE(funcname, ...) Portable##funcname(__VA_ARGS__) |
| #else |
| #define NEON_OR_PORTABLE(funcname, ...) \ |
| TestCPUFeatureNeon() ? Neon##funcname(__VA_ARGS__) \ |
| : Portable##funcname(__VA_ARGS__) |
| #endif |
| |
| #endif // TENSORFLOW_CONTRIB_LITE_KERNELS_INTERNAL_OPTIMIZED_CPU_CHECK_ |