bool AbstractValue::mergeOSREntryValue(Graph& graph, JSValue value)
{
AbstractValue oldMe = *this;
if (isClear()) {
FrozenValue* frozenValue = graph.freeze(value);
if (frozenValue->pointsToHeap()) {
m_structure = frozenValue->structure();
m_arrayModes = asArrayModes(frozenValue->structure()->indexingType());
} else {
m_structure.clear();
m_arrayModes = 0;
}
m_type = speculationFromValue(value);
m_value = value;
} else {
mergeSpeculation(m_type, speculationFromValue(value));
if (!!value && value.isCell()) {
Structure* structure = value.asCell()->structure();
graph.registerStructure(structure);
mergeArrayModes(m_arrayModes, asArrayModes(structure->indexingType()));
m_structure.merge(StructureSet(structure));
}
if (m_value != value)
m_value = JSValue();
}
checkConsistency();
assertIsRegistered(graph);
return oldMe != *this;
}
void AbstractValue::set(Graph& graph, const FrozenValue& value, StructureClobberState clobberState)
{
if (!!value && value.value().isCell()) {
Structure* structure = value.structure();
// FIXME: This check may not be necessary since any frozen value should have its structure
// watched already.
// https://bugs.webkit.org/show_bug.cgi?id=136055
if (graph.registerStructure(structure) == StructureRegisteredAndWatched) {
m_structure = structure;
if (clobberState == StructuresAreClobbered) {
m_arrayModes = ALL_ARRAY_MODES;
m_structure.clobber();
} else
m_arrayModes = asArrayModes(structure->indexingType());
} else {
m_structure.makeTop();
m_arrayModes = ALL_ARRAY_MODES;
}
} else {
m_structure.clear();
m_arrayModes = 0;
}
m_type = speculationFromValue(value.value());
m_value = value.value();
checkConsistency();
assertIsRegistered(graph);
}
void AbstractValue::set(Graph& graph, const FrozenValue& value, StructureClobberState clobberState)
{
if (!!value && value.value().isCell()) {
Structure* structure = value.structure();
if (graph.registerStructure(structure) == StructureRegisteredAndWatched) {
m_structure = structure;
if (clobberState == StructuresAreClobbered) {
m_arrayModes = ALL_ARRAY_MODES;
m_structure.clobber();
} else
m_arrayModes = asArrayModes(structure->indexingType());
} else {
m_structure.makeTop();
m_arrayModes = ALL_ARRAY_MODES;
}
} else {
m_structure.clear();
m_arrayModes = 0;
}
m_type = speculationFromValue(value.value());
m_value = value.value();
checkConsistency();
assertIsRegistered(graph);
}
void AbstractValue::setOSREntryValue(Graph& graph, const FrozenValue& value)
{
if (!!value && value.value().isCell()) {
Structure* structure = value.structure();
graph.registerStructure(structure);
m_structure = structure;
m_arrayModes = asArrayModes(structure->indexingType());
} else {
m_structure.clear();
m_arrayModes = 0;
}
m_type = speculationFromValue(value.value());
m_value = value.value();
checkConsistency();
assertIsRegistered(graph);
}