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begin to fix stupid Coalesce

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This commit is contained in:
ZhuangYumin
2024-10-22 07:00:48 +00:00
parent bce4a64c00
commit 4c9d010ff7
4 changed files with 466 additions and 1 deletions
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12
src/opt/confgraph.cpp
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@ -286,6 +286,7 @@ void Simplify(std::shared_ptr<FunctionDefItem> src, CFGType &cfg, ConfGraph &con
confgraph.low_degree_and_not_move_related.erase(u);
DetachNode(u, confgraph);
confgraph.stack.push_back(u);
confgraph.awful_moves.clear();
}
void Coalesce(std::shared_ptr<FunctionDefItem> src, CFGType &cfg, ConfGraph &confgraph) {
@ -324,8 +325,10 @@ void Coalesce(std::shared_ptr<FunctionDefItem> src, CFGType &cfg, ConfGraph &con
}
if (condition_satisfied) {
MergeNodeInto(src_node, dest_node, confgraph);
confgraph.awful_moves.clear();
} else {
confgraph.potential_moves.insert(move);
confgraph.awful_moves.insert(move);
}
} else {
// Briggs condition
@ -342,8 +345,10 @@ void Coalesce(std::shared_ptr<FunctionDefItem> src, CFGType &cfg, ConfGraph &con
}
if (dangerous_neighbors.size() < kMaxRegs) {
MergeNodeInto(src_node, dest_node, confgraph);
confgraph.awful_moves.clear();
} else {
confgraph.potential_moves.insert(move);
confgraph.awful_moves.insert(move);
}
}
}
@ -362,6 +367,7 @@ void PotentailSpill(std::shared_ptr<FunctionDefItem> src, CFGType &cfg, ConfGrap
confgraph.high_degree_nodes.erase(u);
DetachNode(u, confgraph);
confgraph.stack.push_back(u);
confgraph.awful_moves.clear();
}
void GraphCheck(ConfGraph &confgraph) {
@ -457,6 +463,7 @@ bool ConductColoring(std::shared_ptr<FunctionDefItem> src, CFGType &cfg, ConfGra
// std::cerr << "confgraph.low_degree_and_move_related.size()=" << confgraph.low_degree_and_move_related.size()
// << std::endl;
// std::cerr << "confgraph.high_degree_nodes.size()=" << confgraph.high_degree_nodes.size() << std::endl;
// std::cerr << "confgraph.potential_moves.size()=" << confgraph.potential_moves.size() << std::endl;
// std::cerr << "pending moves" << std::endl;
// for (auto mode : confgraph.pending_moves) {
// std::cerr << '\t';
@ -469,7 +476,7 @@ bool ConductColoring(std::shared_ptr<FunctionDefItem> src, CFGType &cfg, ConfGra
// mode->RecursivePrint(std::cerr);
// }
// std::cerr << std::endl;
GraphCheck(confgraph);
// GraphCheck(confgraph);
for (auto node : confgraph.low_degree_and_not_move_related) {
if (node->is_binded_with_physical_reg) {
throw std::runtime_error("something strange happened: node is binded with physical reg");
@ -494,6 +501,9 @@ bool ConductColoring(std::shared_ptr<FunctionDefItem> src, CFGType &cfg, ConfGra
if (confgraph.potential_moves.size() > 0) {
std::vector<opt::MoveInstruct *> removed;
for (auto move : confgraph.potential_moves) {
if (confgraph.awful_moves.find(move) != confgraph.awful_moves.end()) {
continue;
}
auto src_node = confgraph.id_to_node[cfg.var_to_id[move->src_full]];
auto dest_node = confgraph.id_to_node[cfg.var_to_id[move->dest_full]];
src_node = ConfGraphNode::FindFather(src_node);