jroesch commented on a change in pull request #7518: URL: https://github.com/apache/tvm/pull/7518#discussion_r664942122
########## File path: src/relay/backend/te_compiler.cc ########## @@ -0,0 +1,760 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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. + */ + +#include "te_compiler.h" + +#include <tvm/driver/driver_api.h> +#include <tvm/ir/type_functor.h> +#include <tvm/relay/analysis.h> +#include <tvm/relay/attrs/annotation.h> +#include <tvm/relay/attrs/device_copy.h> +#include <tvm/relay/expr.h> +#include <tvm/relay/expr_functor.h> +#include <tvm/relay/op.h> +#include <tvm/relay/op_attr_types.h> +#include <tvm/runtime/device_api.h> +#include <tvm/runtime/registry.h> +#include <tvm/te/operation.h> +#include <tvm/te/schedule.h> +#include <tvm/te/schedule_pass.h> +#include <tvm/topi/tags.h> + +#include <functional> +#include <limits> +#include <mutex> +#include <tuple> +#include <unordered_map> +#include <utility> +#include <vector> + +#include "../transforms/pass_utils.h" +#include "te_compiler.h" +#include "te_compiler_cache.h" +#include "utils.h" + +namespace tvm { +namespace relay { +// TODO(@jroesch, @csullivan): declare directly elsewhere +backend::StaticMemoryPlan GraphPlanMemory(const Function& func); + +namespace tec { + +using namespace tvm::relay::transform; + +TVM_REGISTER_OBJECT_TYPE(TECompilerNode); + +class TECompilerImpl : public TECompilerNode { + public: + // Lower the function. + CachedFunc Lower(const CCacheKey& key, std::function<String(String)> mangle_fn) { + return LowerInternal(key, mangle_fn)->cached_func; + } + + CachedFunc Lower(const CCacheKey& key, const String mod_name) { + auto mangle_fn = [mod_name](String name) { + std::cout << "inner mod name" << mod_name << std::endl; + return runtime::get_name_mangled(mod_name, name); + }; + + return Lower(key, mangle_fn); + } + + // For now, build one module per function. + PackedFunc JIT(const CCacheKey& key) final { + auto mangle_fn = [](String name) { return name; }; + CCacheValue value = LowerInternal(key, mangle_fn); + if (value->packed_func != nullptr) { + return value->packed_func; + } + auto m = build(value->cached_func->funcs, key->target, Target(nullptr)); + value->packed_func = m.GetFunction(value->cached_func->prim_fn_var->name_hint); + return value->packed_func; + } + + CachedFunc LowerShapeFunc(const CCacheKey& key) final { + return LowerShapeFuncInternal(key)->cached_func; + } + + Map<String, IRModule> GetLoweredFunctions() { + Map<String, IRModule> lowered_functions; + for (const auto& it : cache_) { + auto source_func = it.first; + auto lowered_func = it.second; + auto target = source_func->target; + + if (!lowered_functions.count(target->str())) { + lowered_functions.Set(target->str(), IRModule(Map<GlobalVar, BaseFunc>({}))); + } + + lowered_functions[target->str()]->Update(lowered_func->cached_func->funcs); + } + return lowered_functions; + } + + Array<tvm::runtime::Module> LowerExternalFunctions() { + Array<tvm::runtime::Module> ret; + std::unordered_map<std::string, std::string> cached_symbol; + std::vector<CCacheKey> cached_ext_funcs; + for (const auto& it : cache_) { + auto src_func = it.first->source_func; + ICHECK(src_func.defined()); + if (src_func->GetAttr<String>(attr::kCompiler).defined()) { + auto code_gen = src_func->GetAttr<String>(attr::kCompiler); + std::string code_gen_name = code_gen.value(); + cached_ext_funcs.push_back(it.first); + + auto symbol_name = src_func->GetAttr<String>(tvm::attr::kGlobalSymbol); + ICHECK(symbol_name.defined()) << "No external symbol is set for:\n" + << AsText(src_func, false); + + std::string sn = symbol_name.value(); + if (cached_symbol.count(sn)) { + cached_symbol[sn] = code_gen_name; + } else { + ICHECK_NE(sn, code_gen_name) + << "Found duplicated symbol: " << sn << " for: " << code_gen_name; + } + + std::string ext_name = "relay.ext." + code_gen_name; + auto pf = tvm::runtime::Registry::Get(ext_name); + ICHECK(pf) << "Failed to find the codegen tool for " << ext_name; + // No need to keep compiler attribute at this point, functions have been + // extracted for specific codegen. + src_func = WithAttr(std::move(src_func), attr::kCompiler, NullValue<ObjectRef>()); + runtime::Module ext_mod = (*pf)(src_func); + + ICHECK(ext_mod.defined()) << "No external runtime is generated."; + ret.push_back(ext_mod); + } + } + + // No need to cache external functions as we collected them all to create + // external runtime modules. + for (const auto& it : cached_ext_funcs) { + cache_.erase(it); + } + return ret; + } + + void Clear() final { cache_.clear(); } + + // List all items in the cache. + Array<ObjectRef> ListItems() { + std::lock_guard<std::mutex> lock(mutex_); + Array<ObjectRef> items; + for (auto& kv : cache_) { + items.push_back(kv.first); + items.push_back(kv.second); + } + return items; + } + + /*! + * \brief Get the cache key of the function that is being lowered currently + * \return the cache key + */ + CCacheKey GetCurrentCCacheKey() { return cur_ccache_key_; } + + private: + // implement lowered func + CCacheValue LowerInternal(const CCacheKey& key, std::function<String(String)> mangle_fn) { + std::lock_guard<std::mutex> lock(mutex_); + CCacheValue value; + auto it = cache_.find(key); + if (it != cache_.end()) { + it->second->use_count += 1; + if (it->second->cached_func.defined()) return it->second; + value = it->second; + } else { + value = CCacheValue(make_object<CCacheValueNode>()); + value->use_count = 1; + cache_[key] = value; + } + cur_ccache_key_ = key; + + // No need to lower external functions for now. We will invoke the external + // codegen tool once and lower all functions together. + if (key->source_func->GetAttr<String>(attr::kCompiler).defined()) { + auto ir_module = IRModule(); + const auto name_node = key->source_func->GetAttr<String>(tvm::attr::kGlobalSymbol); + ICHECK(name_node.defined()) << "External function has not been attached a name yet."; + auto func_name = GetUniqueName(name_node.value(), &name_map_); + auto target = Target("ext_dev"); + auto global_var = GlobalVar(func_name); + global_var->checked_type_ = key->source_func->checked_type(); + value->cached_func = CachedFunc(target, global_var, {}, {}, te::Schedule(), {}, ir_module); + return value; + } + + // Enforce use the target. + With<Target> target_scope(key->target); + + ICHECK(!value->cached_func.defined()); + auto cfunc = PrimFuncFor(key->source_func, key->target, [&](std::string name) { + auto mangled = mangle_fn(name); + std::cout << "Mangled: " << mangled << std::endl; Review comment: Remove this. -- This is an automated message from the Apache Git Service. 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