1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
| //===- 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
|