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688d483c0c
We previously moved container identification later in CodeGen in order to preserve information for AlignmentCalc. However, Flattener needs to know if a class is a container in order to apply its special handling for this case. This new approach moves container identification in front of Flattener, but has Container own a type node, representing its layout. This underlying type node can be used for calculating a container's alignment in a later pass.
53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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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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*/
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#pragma once
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#include <string>
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#include <vector>
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#include "NodeTracker.h"
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#include "PassManager.h"
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#include "Types.h"
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#include "Visitor.h"
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namespace oi::detail::type_graph {
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/*
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* Prune
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*
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* Removes unnecessary information from a type graph and releases memory where
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* possible.
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*/
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class Prune : public RecursiveVisitor {
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public:
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static Pass createPass();
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Prune(NodeTracker& tracker) : tracker_(tracker) {
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}
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using RecursiveVisitor::accept;
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using RecursiveVisitor::visit;
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void accept(Type& type) override;
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void visit(Class& c) override;
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void visit(Container& c) override;
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private:
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NodeTracker& tracker_;
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};
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} // namespace oi::detail::type_graph
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