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