wehub-resource-sync
123 lines
3.5 KiB
C++
123 lines
3.5 KiB
C++
// Copyright (c) 2021 CINN Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "paddle/cinn/optim/fold_cinn_call_arguments.h"
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#include <unordered_set>
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#include <vector>
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#include "paddle/cinn/ir/ir_mutator.h"
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#include "paddle/cinn/ir/ir_printer.h"
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#include "paddle/cinn/utils/string.h"
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namespace cinn {
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namespace optim {
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namespace {
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/**
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* Fold the arguments of the Call nodes marked as CINN(calls an LoweredFunc).
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*/
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struct FoldCINNCallArgumentsMutator : public ir::IRMutator<> {
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using ir::IRMutator<>::Visit;
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void operator()(ir::LoweredFunc fn) { Visit(fn.As<ir::_LoweredFunc_>()); }
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private:
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void Visit(const ir::Block* op, Expr* expr) override {
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auto* node = expr->As<ir::Block>();
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for (auto it = node->stmts.begin(); it != node->stmts.end();) {
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if (it->As<ir::Store>()) {
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auto* call = it->As<ir::Store>()->value.As<ir::Call>();
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if (call && call->is_cinn_call()) {
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// remove the duplicate calls.
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std::string key = utils::GetStreamCnt(Expr(call));
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if (visited_call_.count(key)) {
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it = node->stmts.erase(it);
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continue;
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}
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ir::IRMutator<>::Visit(&(*it), &(*it));
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visited_call_.insert(key);
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continue;
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}
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}
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ir::IRMutator<>::Visit(&(*it), &(*it));
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++it;
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}
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}
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void Visit(const ir::Store* op, Expr* expr) override {
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auto* node = expr->As<ir::Store>();
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if (node->value.As<ir::Call>()) {
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auto* call = node->value.As<ir::Call>();
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switch (call->call_type) {
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case ir::CallType::CINN:
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MutateCall(call);
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*expr = node->value;
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break;
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case ir::CallType::Intrinsic:
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break;
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case ir::CallType::Extern:
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break;
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default:
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CINN_NOT_IMPLEMENTED
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}
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}
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}
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void MutateCall(ir::Call* call) {
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if (call->call_type == ir::CallType::Extern) return;
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std::vector<Expr> read_args;
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std::vector<Expr> write_args;
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for (auto& arg : call->read_args) {
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if (arg.as_tensor()) {
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PADDLE_ENFORCE_EQ(arg.as_tensor()->buffer.defined(),
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true,
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::common::errors::InvalidArgument(
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"Expected tensor [%s] to have a defined buffer, "
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"but the buffer is not defined.",
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arg.as_tensor()->name.c_str()));
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read_args.push_back(arg.as_tensor()->buffer);
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} else {
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read_args.push_back(arg);
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}
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}
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for (auto& arg : call->write_args) {
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if (arg.as_tensor()) {
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write_args.push_back(arg.as_tensor()->buffer);
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} else {
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write_args.push_back(arg);
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}
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}
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call->read_args = read_args;
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call->write_args = write_args;
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}
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private:
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// To avoid the same call triggered duplicately.
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std::unordered_set<std::string> visited_call_;
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};
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} // namespace
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void FoldCINNCallArguments(ir::LoweredFunc fn) {
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FoldCINNCallArgumentsMutator()(fn);
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}
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} // namespace optim
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} // namespace cinn
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