bool run()
{
ASSERT(m_graph.m_form == ThreadedCPS);
ASSERT(m_graph.m_unificationState == LocallyUnified);
// Ensure that all Phi functions are unified.
for (BlockIndex blockIndex = m_graph.m_blocks.size(); blockIndex--;) {
BasicBlock* block = m_graph.m_blocks[blockIndex].get();
if (!block)
continue;
ASSERT(block->isReachable);
for (unsigned phiIndex = block->phis.size(); phiIndex--;) {
Node* phi = block->phis[phiIndex];
for (unsigned childIdx = 0; childIdx < AdjacencyList::Size; ++childIdx) {
if (!phi->children.child(childIdx))
break;
phi->variableAccessData()->unify(
phi->children.child(childIdx)->variableAccessData());
}
}
}
// Ensure that all predictions are fixed up based on the unification.
for (unsigned i = 0; i < m_graph.m_variableAccessData.size(); ++i) {
VariableAccessData* data = &m_graph.m_variableAccessData[i];
data->find()->predict(data->nonUnifiedPrediction());
data->find()->mergeIsCaptured(data->isCaptured());
data->find()->mergeStructureCheckHoistingFailed(data->structureCheckHoistingFailed());
data->find()->mergeShouldNeverUnbox(data->shouldNeverUnbox());
data->find()->mergeIsLoadedFrom(data->isLoadedFrom());
}
m_graph.m_unificationState = GloballyUnified;
return true;
}
