protected override void RemoveEntryInPredicatedData(AnalysisEntity key, CoreCopyAnalysisData predicatedData)
{
Debug.Assert(HasPredicatedData);
var hasEntry = predicatedData.TryGetValue(key, out var value);
base.RemoveEntryInPredicatedData(key, predicatedData);
// If we are removing an entity from predicated data, we need to adjust the copy values of its copy entities.
if (hasEntry && value !.AnalysisEntities.Count > 1)
{
var newValueForOldCopyEntities = value.WithEntityRemoved(key);
if (newValueForOldCopyEntities.AnalysisEntities.Count == 1)
{
predicatedData.Remove(newValueForOldCopyEntities.AnalysisEntities.Single());
}
else
{
foreach (var copyEntity in newValueForOldCopyEntities.AnalysisEntities)
{
predicatedData[copyEntity] = newValueForOldCopyEntities;
}
}
}
}
public override CoreCopyAnalysisData Merge(CoreCopyAnalysisData map1, CoreCopyAnalysisData map2)
{
Debug.Assert(map1 != null);
Debug.Assert(map2 != null);
CopyAnalysisData.AssertValidCopyAnalysisData(map1);
CopyAnalysisData.AssertValidCopyAnalysisData(map2);
var result = new DictionaryAnalysisData <AnalysisEntity, CopyAbstractValue>();
foreach (var kvp in map1)
{
var key = kvp.Key;
var value1 = kvp.Value;
// If the key exists in both maps, use the merged value.
// Otherwise, use the default value.
CopyAbstractValue mergedValue;
if (map2.TryGetValue(key, out var value2))
{
mergedValue = ValueDomain.Merge(value1, value2);
}
else
{
mergedValue = _getDefaultCopyValue(key);
}
result.Add(key, mergedValue);
}
foreach (var kvp in map2)
{
if (!result.ContainsKey(kvp.Key))
{
result.Add(kvp.Key, _getDefaultCopyValue(kvp.Key));
}
}
CopyAnalysisData.AssertValidCopyAnalysisData(result);
return(result);
}
#pragma warning disable CA1725 // Parameter names should match base declaration
public override CoreCopyAnalysisData Merge(CoreCopyAnalysisData map1, CoreCopyAnalysisData map2)
#pragma warning restore CA1725 // Parameter names should match base declaration
{
CopyAnalysisData.AssertValidCopyAnalysisData(map1);
CopyAnalysisData.AssertValidCopyAnalysisData(map2);
var result = new DictionaryAnalysisData <AnalysisEntity, CopyAbstractValue>();
foreach (var kvp in map1)
{
var key = kvp.Key;
var value1 = kvp.Value;
// If the key exists in both maps, use the merged value.
// Otherwise, use the default value.
CopyAbstractValue mergedValue;
if (map2.TryGetValue(key, out var value2))
{
mergedValue = ValueDomain.Merge(value1, value2);
}
else
{
mergedValue = _getDefaultCopyValue(key);
}
result.Add(key, mergedValue);
}
foreach (var kvp in map2)
{
if (!result.ContainsKey(kvp.Key))
{
result.Add(kvp.Key, _getDefaultCopyValue(kvp.Key));
}
}
CopyAnalysisData.AssertValidCopyAnalysisData(result);
return(result);
}
protected override void ApplyPredicatedData(CoreCopyAnalysisData coreAnalysisData, CoreCopyAnalysisData predicatedData)
{
if (predicatedData.Count == 0)
{
return;
}
#if DEBUG
var originalCoreAnalysisData = new Dictionary <AnalysisEntity, CopyAbstractValue>(coreAnalysisData);
#endif
AssertValidCopyAnalysisData(coreAnalysisData);
AssertValidCopyAnalysisData(predicatedData);
// Applying predicated copy data to current copy analysis data needs us to merge the copy sets of an entity from both the maps.
foreach (var kvp in predicatedData)
{
var predicatedValue = kvp.Value;
// Check if the entity has a copy value in both the predicated and current copy anaylysis data.
if (coreAnalysisData.TryGetValue(kvp.Key, out var currentValue))
{
var newCopyEntities = currentValue.AnalysisEntities;
var newKind = currentValue.Kind;
foreach (var predicatedCopyEntity in predicatedValue.AnalysisEntities)
{
// Predicate copy value has an entity which is not part of the current copy value.
// Include this entity and it's copy entities in the new copy value.
if (!newCopyEntities.Contains(predicatedCopyEntity))
{
if (coreAnalysisData.TryGetValue(predicatedCopyEntity, out var predicatedCopyEntityValue))
{
newCopyEntities = newCopyEntities.Union(predicatedCopyEntityValue.AnalysisEntities);
newKind = newKind.MergeIfBothKnown(predicatedCopyEntityValue.Kind);
}
else
{
newCopyEntities = newCopyEntities.Add(predicatedCopyEntity);
}
}
}
// Check if we need to change the current copy value.
if (newCopyEntities.Count != currentValue.AnalysisEntities.Count)
{
var newCopyValue = new CopyAbstractValue(newCopyEntities, newKind);
foreach (var copyEntity in newCopyEntities)
{
coreAnalysisData[copyEntity] = newCopyValue;
}
}
else
{
Debug.Assert(newCopyEntities.SetEquals(currentValue.AnalysisEntities));
}
}
else
{
// Predicated copy entity has no entry in the current copy analysis data, so just add the entry.
coreAnalysisData[kvp.Key] = kvp.Value;
}
}
// Ensure that applying predicated data to the current copy data can only increase the copy value entities in the current copy data.
Debug.Assert(predicatedData.All(kvp => kvp.Value.AnalysisEntities.IsSubsetOf(coreAnalysisData[kvp.Key].AnalysisEntities)));
AssertValidCopyAnalysisData(coreAnalysisData);
}