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archived-llvm/include/llvm/CodeGen/PBQP/Solution.h
Chandler Carruth 6b547686c5 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351636 91177308-0d34-0410-b5e6-96231b3b80d8
2019-01-19 08:50:56 +00:00

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1.6 KiB
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//===- Solution.h - PBQP Solution -------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// PBQP Solution class.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_PBQP_SOLUTION_H
#define LLVM_CODEGEN_PBQP_SOLUTION_H
#include "llvm/CodeGen/PBQP/Graph.h"
#include <cassert>
#include <map>
namespace llvm {
namespace PBQP {
/// Represents a solution to a PBQP problem.
///
/// To get the selection for each node in the problem use the getSelection method.
class Solution {
private:
using SelectionsMap = std::map<GraphBase::NodeId, unsigned>;
SelectionsMap selections;
public:
/// Initialise an empty solution.
Solution() = default;
/// Set the selection for a given node.
/// @param nodeId Node id.
/// @param selection Selection for nodeId.
void setSelection(GraphBase::NodeId nodeId, unsigned selection) {
selections[nodeId] = selection;
}
/// Get a node's selection.
/// @param nodeId Node id.
/// @return The selection for nodeId;
unsigned getSelection(GraphBase::NodeId nodeId) const {
SelectionsMap::const_iterator sItr = selections.find(nodeId);
assert(sItr != selections.end() && "No selection for node.");
return sItr->second;
}
};
} // end namespace PBQP
} // end namespace llvm
#endif // LLVM_CODEGEN_PBQP_SOLUTION_H