diff options
Diffstat (limited to 'src/core/NEON/kernels/arm_gemm/gemm_implementation.hpp')
-rw-r--r-- | src/core/NEON/kernels/arm_gemm/gemm_implementation.hpp | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/src/core/NEON/kernels/arm_gemm/gemm_implementation.hpp b/src/core/NEON/kernels/arm_gemm/gemm_implementation.hpp new file mode 100644 index 0000000000..6734e3cce0 --- /dev/null +++ b/src/core/NEON/kernels/arm_gemm/gemm_implementation.hpp @@ -0,0 +1,131 @@ +/* + * Copyright (c) 2018 ARM Limited. + * + * SPDX-License-Identifier: MIT + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all + * copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include "gemv_batched.hpp" + +namespace arm_gemm { + +template<typename Top, typename Tret> +class GemmImplementation { +public: + /* Is this implementation compatible with the args as provided? */ + virtual bool is_supported(const GemmArgs<Tret> &args) { return true; } + /* Is this implementation "recommended" for these args (heuristic)? */ + virtual bool is_recommended(const GemmArgs<Tret> &args) { return true; } + /* Instantiate this method please. */ + virtual UniqueGemmCommon<Top, Tret> instantiate(const GemmArgs<Tret> &args) = 0; + + /* Indicate the "GemmMethod" for use as a selector */ + const GemmMethod method; + + virtual ~GemmImplementation() { } + + GemmImplementation(GemmMethod method) : method(method) { } +}; + +/* "gemv_batched" implementation is type-agnostic, so template it here. */ +template<typename Top, typename Tret> +class GemmImpl_gemv_batched : public GemmImplementation<Top, Tret> { +public: + bool is_supported(const GemmArgs<Tret> &args) override { + return (args._Msize==1 && args._nbatches > 1); + } + + UniqueGemmCommon<Top, Tret> instantiate(const GemmArgs<Tret> &args) override { + return UniqueGemmCommon<Top, Tret> (new GemvBatched<Top, Tret>(args)); + } + + GemmImpl_gemv_batched() : GemmImplementation<Top, Tret>(GemmMethod::GEMV_BATCHED) { } +}; + +/* "Master" function implemented for each valid combination of types. + * Returns a list of GEMM implementation descriptors for processing by the + * other functions. */ +template<typename Top, typename Tret> +std::vector<GemmImplementation<Top, Tret> *> &gemm_implementation_list(); + +template<typename Top, typename Tret> +GemmImplementation<Top, Tret> *find_implementation(GemmArgs<Tret> &args, GemmConfig *cfg) { + auto gemms = gemm_implementation_list<Top, Tret>(); + + for(auto &&i : gemms) { + /* Skip if this implementation doesn't support these args. */ + if (!i->is_supported(args)) { + continue; + } + + /* Skip if a specific method is requested and this is a different one. */ + if (cfg && cfg->method != GemmMethod::DEFAULT && i->method != cfg->method) { + continue; + } + + /* If no specific method is requested, check that this method recommends itself. */ + if ((!cfg || cfg->method == GemmMethod::DEFAULT) && !i->is_recommended(args)) { + continue; + } + + return i; + } + + return nullptr; +} + +template<typename Top, typename Tret> +UniqueGemmCommon<Top, Tret> gemm(GemmArgs<Tret> &args, GemmConfig *cfg) { + auto impl = find_implementation<Top, Tret>(args, cfg); + + if (impl) { + return impl->instantiate(args); + } + + return UniqueGemmCommon<Top, Tret>(nullptr); +} + +template<typename Top, typename Tret> +GemmMethod get_gemm_method(GemmArgs<Tret> &args) { + auto impl = find_implementation<Top, Tret>(args, nullptr); + + if (impl) { + return impl->method; + } + + /* This shouldn't happen - there should always be at least one valid implementation. */ + return GemmMethod::DEFAULT; +} + +template<typename Top, typename Tret> +bool method_is_compatible(GemmMethod method, GemmArgs<Tret> &args) { + /* Determine if the method is valid by attempting to obtain an implementation specifying this method. */ + GemmConfig cfg(method); + + auto impl = find_implementation<Top, Tret>(args, &cfg); + + if (impl) { + return true; + } + + return false; +} + +} // namespace arm_gemm |