void InPlaceAbstractState::initialize()
{
BasicBlock* root = m_graph.block(0);
root->cfaShouldRevisit = true;
root->cfaHasVisited = false;
root->cfaFoundConstants = false;
for (size_t i = 0; i < root->valuesAtHead.numberOfArguments(); ++i) {
root->valuesAtTail.argument(i).clear();
if (m_graph.m_form == SSA) {
root->valuesAtHead.argument(i).makeTop();
continue;
}
Node* node = root->variablesAtHead.argument(i);
ASSERT(node->op() == SetArgument);
if (!node->variableAccessData()->shouldUnboxIfPossible()) {
root->valuesAtHead.argument(i).makeTop();
continue;
}
SpeculatedType prediction =
node->variableAccessData()->argumentAwarePrediction();
if (isInt32Speculation(prediction))
root->valuesAtHead.argument(i).setType(SpecInt32);
else if (isBooleanSpeculation(prediction))
root->valuesAtHead.argument(i).setType(SpecBoolean);
else if (isCellSpeculation(prediction))
root->valuesAtHead.argument(i).setType(SpecCell);
else
root->valuesAtHead.argument(i).makeTop();
}
for (size_t i = 0; i < root->valuesAtHead.numberOfLocals(); ++i) {
Node* node = root->variablesAtHead.local(i);
if (node && node->variableAccessData()->isCaptured())
root->valuesAtHead.local(i).makeTop();
else
root->valuesAtHead.local(i).clear();
root->valuesAtTail.local(i).clear();
}
for (BlockIndex blockIndex = 1 ; blockIndex < m_graph.numBlocks(); ++blockIndex) {
BasicBlock* block = m_graph.block(blockIndex);
if (!block)
continue;
ASSERT(block->isReachable);
block->cfaShouldRevisit = false;
block->cfaHasVisited = false;
block->cfaFoundConstants = false;
for (size_t i = 0; i < block->valuesAtHead.numberOfArguments(); ++i) {
block->valuesAtHead.argument(i).clear();
block->valuesAtTail.argument(i).clear();
}
for (size_t i = 0; i < block->valuesAtHead.numberOfLocals(); ++i) {
block->valuesAtHead.local(i).clear();
block->valuesAtTail.local(i).clear();
}
if (!block->isOSRTarget)
continue;
if (block->bytecodeBegin != m_graph.m_plan.osrEntryBytecodeIndex)
continue;
for (size_t i = 0; i < m_graph.m_plan.mustHandleValues.size(); ++i) {
AbstractValue value;
value.setMostSpecific(m_graph, m_graph.m_plan.mustHandleValues[i]);
int operand = m_graph.m_plan.mustHandleValues.operandForIndex(i);
block->valuesAtHead.operand(operand).merge(value);
#if DFG_ENABLE(DEBUG_PROPAGATION_VERBOSE)
dataLogF(" Initializing Block #%u, operand r%d, to ", blockIndex, operand);
block->valuesAtHead.operand(operand).dump(WTF::dataFile());
dataLogF("\n");
#endif
}
block->cfaShouldRevisit = true;
}
if (m_graph.m_form == SSA) {
for (BlockIndex blockIndex = 0; blockIndex < m_graph.numBlocks(); ++blockIndex) {
BasicBlock* block = m_graph.block(blockIndex);
if (!block)
continue;
setLiveValues(block->ssa->valuesAtHead, block->ssa->liveAtHead);
setLiveValues(block->ssa->valuesAtTail, block->ssa->liveAtTail);
}
}
}
void InPlaceAbstractState::initialize()
{
BasicBlock* root = m_graph.block(0);
root->cfaShouldRevisit = true;
root->cfaHasVisited = false;
root->cfaFoundConstants = false;
root->cfaStructureClobberStateAtHead = StructuresAreWatched;
root->cfaStructureClobberStateAtTail = StructuresAreWatched;
for (size_t i = 0; i < root->valuesAtHead.numberOfArguments(); ++i) {
root->valuesAtTail.argument(i).clear();
FlushFormat format;
if (m_graph.m_form == SSA)
format = m_graph.m_argumentFormats[i];
else {
Node* node = m_graph.m_arguments[i];
if (!node)
format = FlushedJSValue;
else {
ASSERT(node->op() == SetArgument);
format = node->variableAccessData()->flushFormat();
}
}
switch (format) {
case FlushedInt32:
root->valuesAtHead.argument(i).setType(SpecInt32);
break;
case FlushedBoolean:
root->valuesAtHead.argument(i).setType(SpecBoolean);
break;
case FlushedCell:
root->valuesAtHead.argument(i).setType(m_graph, SpecCell);
break;
case FlushedJSValue:
root->valuesAtHead.argument(i).makeHeapTop();
break;
default:
DFG_CRASH(m_graph, nullptr, "Bad flush format for argument");
break;
}
}
for (size_t i = 0; i < root->valuesAtHead.numberOfLocals(); ++i) {
root->valuesAtHead.local(i).clear();
root->valuesAtTail.local(i).clear();
}
for (BlockIndex blockIndex = 1 ; blockIndex < m_graph.numBlocks(); ++blockIndex) {
BasicBlock* block = m_graph.block(blockIndex);
if (!block)
continue;
ASSERT(block->isReachable);
block->cfaShouldRevisit = false;
block->cfaHasVisited = false;
block->cfaFoundConstants = false;
block->cfaStructureClobberStateAtHead = StructuresAreWatched;
block->cfaStructureClobberStateAtTail = StructuresAreWatched;
for (size_t i = 0; i < block->valuesAtHead.numberOfArguments(); ++i) {
block->valuesAtHead.argument(i).clear();
block->valuesAtTail.argument(i).clear();
}
for (size_t i = 0; i < block->valuesAtHead.numberOfLocals(); ++i) {
block->valuesAtHead.local(i).clear();
block->valuesAtTail.local(i).clear();
}
}
if (m_graph.m_form == SSA) {
for (BlockIndex blockIndex = 0; blockIndex < m_graph.numBlocks(); ++blockIndex) {
BasicBlock* block = m_graph.block(blockIndex);
if (!block)
continue;
setLiveValues(block->ssa->valuesAtHead, block->ssa->liveAtHead);
setLiveValues(block->ssa->valuesAtTail, block->ssa->liveAtTail);
}
}
}