File Manager

003 File Manager

Current Path: /usr/src/contrib/llvm-project/llvm/include/llvm/ADT

usr / src / contrib / llvm-project / llvm / include / llvm / ADT /

📁 ..
📄 APFloat.h(48.83 KB)
📄 APInt.h(74.48 KB)
📄 APSInt.h(11.75 KB)
📄 AllocatorList.h(7.53 KB)
📄 Any.h(5.05 KB)
📄 ArrayRef.h(17.92 KB)
📄 BitVector.h(29.74 KB)
📄 Bitfields.h(11.65 KB)
📄 BitmaskEnum.h(5.53 KB)
📄 BreadthFirstIterator.h(4.82 KB)
📄 CachedHashString.h(5.9 KB)
📄 CoalescingBitVector.h(14.91 KB)
📄 DAGDeltaAlgorithm.h(3.13 KB)
📄 DeltaAlgorithm.h(3.54 KB)
📄 DenseMap.h(43.14 KB)
📄 DenseMapInfo.h(11.4 KB)
📄 DenseSet.h(9.33 KB)
📄 DepthFirstIterator.h(10.37 KB)
📄 DirectedGraph.h(9.56 KB)
📄 EnumeratedArray.h(1.6 KB)
📄 EpochTracker.h(3.2 KB)
📄 EquivalenceClasses.h(10.52 KB)
📄 FloatingPointMode.h(5.62 KB)
📄 FoldingSet.h(30.16 KB)
📄 FunctionExtras.h(14.55 KB)
📄 GraphTraits.h(5.71 KB)
📄 Hashing.h(25.12 KB)
📄 ImmutableList.h(7.57 KB)
📄 ImmutableMap.h(10.84 KB)
📄 ImmutableSet.h(37.52 KB)
📄 IndexedMap.h(2.5 KB)
📄 IntEqClasses.h(2.87 KB)
📄 IntervalMap.h(72.88 KB)
📄 IntrusiveRefCntPtr.h(8.1 KB)
📄 MapVector.h(7.79 KB)
📄 None.h(983 B)
📄 Optional.h(10.82 KB)
📄 PackedVector.h(4.17 KB)
📄 PointerEmbeddedInt.h(4.05 KB)
📄 PointerIntPair.h(8.72 KB)
📄 PointerSumType.h(11.61 KB)
📄 PointerUnion.h(10.17 KB)
📄 PostOrderIterator.h(11.05 KB)
📄 PriorityQueue.h(2.69 KB)
📄 PriorityWorklist.h(8.11 KB)
📄 SCCIterator.h(8.02 KB)
📄 STLExtras.h(70.56 KB)
📄 ScopeExit.h(1.83 KB)
📄 ScopedHashTable.h(8.27 KB)
📄 Sequence.h(2.59 KB)
📄 SetOperations.h(2.58 KB)
📄 SetVector.h(9.39 KB)
📄 SmallBitVector.h(20.36 KB)
📄 SmallPtrSet.h(16.93 KB)
📄 SmallSet.h(8.37 KB)
📄 SmallString.h(8.55 KB)
📄 SmallVector.h(32.33 KB)
📄 SparseBitVector.h(26.2 KB)
📄 SparseMultiSet.h(17.83 KB)
📄 SparseSet.h(11.41 KB)
📄 Statistic.h(7.01 KB)
📄 StringExtras.h(13.25 KB)
📄 StringMap.h(15.7 KB)
📄 StringMapEntry.h(4.83 KB)
📄 StringRef.h(31.68 KB)
📄 StringSet.h(1.51 KB)
📄 StringSwitch.h(6.25 KB)
📄 TinyPtrVector.h(10.19 KB)
📄 Triple.h(27.4 KB)
📄 Twine.h(17.48 KB)
📄 TypeSwitch.h(5.82 KB)
📄 UniqueVector.h(3.09 KB)
📄 Waymarking.h(11.96 KB)
📄 bit.h(2.26 KB)
📄 edit_distance.h(3.57 KB)
📄 fallible_iterator.h(8.31 KB)
📄 ilist.h(13.68 KB)
📄 ilist_base.h(2.72 KB)
📄 ilist_iterator.h(7.21 KB)
📄 ilist_node.h(9.84 KB)
📄 ilist_node_base.h(1.7 KB)
📄 ilist_node_options.h(5.07 KB)
📄 iterator.h(13.46 KB)
📄 iterator_range.h(2.22 KB)
📄 simple_ilist.h(10.78 KB)

Editing: DeltaAlgorithm.h

//===- DeltaAlgorithm.h - A Set Minimization Algorithm ---------*- 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
//===----------------------------------------------------------------------===//

#ifndef LLVM_ADT_DELTAALGORITHM_H
#define LLVM_ADT_DELTAALGORITHM_H

#include <set>
#include <vector>

namespace llvm {

/// DeltaAlgorithm - Implements the delta debugging algorithm (A. Zeller '99)
/// for minimizing arbitrary sets using a predicate function.
///
/// The result of the algorithm is a subset of the input change set which is
/// guaranteed to satisfy the predicate, assuming that the input set did. For
/// well formed predicates, the result set is guaranteed to be such that
/// removing any single element would falsify the predicate.
///
/// For best results the predicate function *should* (but need not) satisfy
/// certain properties, in particular:
///  (1) The predicate should return false on an empty set and true on the full
///  set.
///  (2) If the predicate returns true for a set of changes, it should return
///  true for all supersets of that set.
///
/// It is not an error to provide a predicate that does not satisfy these
/// requirements, and the algorithm will generally produce reasonable
/// results. However, it may run substantially more tests than with a good
/// predicate.
class DeltaAlgorithm {
public:
  using change_ty = unsigned;
  // FIXME: Use a decent data structure.
  using changeset_ty = std::set<change_ty>;
  using changesetlist_ty = std::vector<changeset_ty>;

private:
  /// Cache of failed test results. Successful test results are never cached
  /// since we always reduce following a success.
  std::set<changeset_ty> FailedTestsCache;

/// GetTestResult - Get the test result for the \p Changes from the
  /// cache, executing the test if necessary.
  ///
  /// \param Changes - The change set to test.
  /// \return - The test result.
  bool GetTestResult(const changeset_ty &Changes);

/// Split - Partition a set of changes \p S into one or two subsets.
  void Split(const changeset_ty &S, changesetlist_ty &Res);

/// Delta - Minimize a set of \p Changes which has been partitioned into
  /// smaller sets, by attempting to remove individual subsets.
  changeset_ty Delta(const changeset_ty &Changes,
                     const changesetlist_ty &Sets);

/// Search - Search for a subset (or subsets) in \p Sets which can be
  /// removed from \p Changes while still satisfying the predicate.
  ///
  /// \param Res - On success, a subset of Changes which satisfies the
  /// predicate.
  /// \return - True on success.
  bool Search(const changeset_ty &Changes, const changesetlist_ty &Sets,
              changeset_ty &Res);

protected:
  /// UpdatedSearchState - Callback used when the search state changes.
  virtual void UpdatedSearchState(const changeset_ty &Changes,
                                  const changesetlist_ty &Sets) {}

/// ExecuteOneTest - Execute a single test predicate on the change set \p S.
  virtual bool ExecuteOneTest(const changeset_ty &S) = 0;

DeltaAlgorithm& operator=(const DeltaAlgorithm&) = default;

public:
  virtual ~DeltaAlgorithm();

/// Run - Minimize the set \p Changes by executing \see ExecuteOneTest() on
  /// subsets of changes and returning the smallest set which still satisfies
  /// the test predicate.
  changeset_ty Run(const changeset_ty &Changes);
};

} // end namespace llvm

#endif // LLVM_ADT_DELTAALGORITHM_H

003 File Manager

Editing: DeltaAlgorithm.h

Upload File

Create Folder