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/*
* Copyright (c) 2019 Samsung Electronics Co., Ltd. All Rights Reserved
*
* Licensed 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 "loco/IR/Node.h"
#include "loco/IR/Use.h"
#include <cassert>
namespace loco
{
Node::~Node()
{
// To detect dangling references
assert(_uses.size() == 0);
}
std::set<Node *> preds(const Node *node)
{
std::set<Node *> res;
for (uint32_t n = 0; n < node->arity(); ++n)
{
if (auto pred = node->arg(n))
{
res.insert(pred);
}
}
return res;
}
std::set<Node *> succs(const Node *node)
{
std::set<Node *> res;
for (auto use : node->_uses)
{
auto user = use->user();
assert(user != nullptr);
res.insert(user);
}
return res;
}
Subst<SubstQualifier::Default>::Subst(Node *from) : _from{from}
{
// _from SHOULD be valid
assert(_from != nullptr);
}
void Subst<SubstQualifier::Default>::with(Node *into) const
{
if (_from == into)
{
return;
}
auto *uses = &(_from->_uses);
while (!uses->empty())
{
auto use = *(uses->begin());
use->node(into);
}
}
Subst<SubstQualifier::Default> replace(Node *node)
{
// Let's create Subst<SubstQualifier::Default>!
return Subst<SubstQualifier::Default>{node};
}
} // namespace loco
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