| /* |
| * 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 |