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https://github.com/YosysHQ/yosys
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Improvements in "viz" pass
Signed-off-by: Claire Xenia Wolf <claire@clairexen.net>
This commit is contained in:
Claire Xenia Wolf
parent
c679b408cb
commit
aeba966475
1 changed files with 464 additions and 324 deletions
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@ -42,17 +42,15 @@ PRIVATE_NAMESPACE_BEGIN
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struct VizConfig {
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enum group_type_t {
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TYPE_G,
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TYPE_U
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TYPE_U,
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TYPE_X
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};
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int script = 9;
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int effort = 9;
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int similar_thresh = 30;
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int small_group_thresh = 10;
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int large_group_count = 10;
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std::vector<std::pair<group_type_t, RTLIL::Selection>> groups;
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int max_size = -1;
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int max_fanout = 10;
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int max_fanin = 10;
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int max_conns = 15;
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};
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struct GraphNode {
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@ -68,78 +66,45 @@ struct GraphNode {
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}
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pool<IdString> names_;
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dict<int, uint8_t> tags_;
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pool<GraphNode*, hash_ptr_ops> upstream_;
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pool<GraphNode*, hash_ptr_ops> downstream_;
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pool<IdString> &names() { return get()->names_; }
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dict<int, uint8_t> &tags() { return get()->tags_; }
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pool<GraphNode*, hash_ptr_ops> &upstream() { return get()->upstream_; }
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pool<GraphNode*, hash_ptr_ops> &downstream() { return get()->downstream_; }
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void replace(GraphNode *g) {
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if (replaced)
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return get()->replace(g);
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log_assert(!nomerge);
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log_assert(!g->get()->nomerge);
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log_assert(terminal == g->terminal);
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if (this == g->get()) return;
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for (auto v : g->names())
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names().insert(v);
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for (auto v : g->upstream()) {
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auto n = v->get();
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if (n == this) continue;
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upstream().insert(n);
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uint8_t tag(int index) {
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return tags().at(index, 0);
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}
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for (auto v : g->downstream()) {
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auto n = v->get();
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if (n == this) continue;
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downstream().insert(n);
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}
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g->names().clear();
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g->upstream().clear();
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g->downstream().clear();
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g->get()->replaced = this;
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}
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void cleanup() {
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if (replaced) return;
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pool<GraphNode*, hash_ptr_ops> new_upstream;
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pool<GraphNode*, hash_ptr_ops> new_downstream;
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for (auto g : upstream_) {
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auto n = g->get();
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if (n == this) continue;
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new_upstream.insert(n);
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}
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for (auto g : downstream_) {
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auto n = g->get();
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if (n == this) continue;
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new_downstream.insert(n);
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}
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std::swap(upstream_, new_upstream);
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std::swap(downstream_, new_downstream);
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bool tag(int index, uint8_t mask) {
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if (!mask) return false;
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uint8_t &v = tags()[index];
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if (v == (v|mask)) return false;
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v |= mask;
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return true;
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}
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};
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struct Graph {
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bool dirty = true;
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int phase_counter = 0;
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vector<GraphNode*> nodes;
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vector<GraphNode*> term_nodes;
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vector<GraphNode*> nonterm_nodes;
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vector<GraphNode*> replaced_nodes;
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Module *module;
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const VizConfig &config;
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// statistics, updated by cleanup()
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int term_nodes_cnt;
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int nonterm_nodes_cnt;
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int max_group_sizes[5];
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// statistics and indices, updated by update()
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std::vector<int> max_group_sizes;
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double mean_group_size;
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double rms_group_size;
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int edge_count, tag_count;
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~Graph()
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{
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@ -147,252 +112,172 @@ struct Graph {
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for (auto n : replaced_nodes) delete n;
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}
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void cleanup()
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GraphNode *node(int index)
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{
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vector<GraphNode*> new_nodes;
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if (index)
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return nodes[index-1]->get();
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return nullptr;
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}
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term_nodes_cnt = 0;
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nonterm_nodes_cnt = 0;
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for (int i = 0; i < 5; i++)
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max_group_sizes[i] = 0;
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void update_nodes()
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{
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// Filter-out replaced nodes
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term_nodes.clear();
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nonterm_nodes.clear();
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for (auto n : nodes) {
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if (n->replaced) {
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if (n->replaced)
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replaced_nodes.push_back(n);
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} else {
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new_nodes.push_back(n);
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n->index = GetSize(new_nodes);
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n->cleanup();
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if (n->terminal) {
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term_nodes_cnt++;
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} else {
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nonterm_nodes_cnt++;
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int pivot = GetSize(n->names());
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for (int i = 0; i < 5; i++)
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if (pivot >= max_group_sizes[i])
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std::swap(pivot, max_group_sizes[i]);
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}
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}
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else if (n->terminal)
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term_nodes.push_back(n);
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else
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nonterm_nodes.push_back(n);
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}
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std::swap(nodes, new_nodes);
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// Re-index the remaining nodes
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nodes.clear();
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max_group_sizes.clear();
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max_group_sizes.resize(config.large_group_count);
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mean_group_size = 0;
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rms_group_size = 0;
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edge_count = 0;
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auto update_node = [&](GraphNode *n)
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{
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nodes.push_back(n);
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n->index = GetSize(nodes);
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pool<GraphNode*, hash_ptr_ops> new_upstream;
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pool<GraphNode*, hash_ptr_ops> new_downstream;
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for (auto g : n->upstream()) {
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if (n != (g = g->get()))
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new_upstream.insert(g);
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}
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for (auto g : n->downstream()) {
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if (n != (g = g->get()))
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new_downstream.insert(g), edge_count++;
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}
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enum merge_flags_t : uint32_t {
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merge_tag_any = 0x00000001,
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merge_tag_buf = 0x00000002,
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merge_dbl_buf = 0x00000004,
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merge_bi_conn = 0x00000008,
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merge_id_conn = 0x00000010,
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merge_term = 0x00000020,
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merge_small = 0x00000040,
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merge_maxfan = 0x00000080,
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new_upstream.sort();
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new_downstream.sort();
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std::swap(n->upstream(), new_upstream);
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std::swap(n->downstream(), new_downstream);
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if (!n->terminal) {
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int t = GetSize(n->names());
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mean_group_size += t;
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rms_group_size += t*t;
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for (int i = 0; i < config.large_group_count; i++)
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if (t >= max_group_sizes[i])
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std::swap(t, max_group_sizes[i]);
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}
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};
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static const std::vector<std::vector<Graph::merge_flags_t>>& scripts()
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{
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static std::vector<std::vector<merge_flags_t>> buffer;
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for (auto n : term_nodes)
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update_node(n);
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if (buffer.empty()) {
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auto next_script = [&]() { buffer.push_back({}); };
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auto cmd = [&](uint32_t flags) { buffer.back().push_back(merge_flags_t(flags)); };
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for (auto n : nonterm_nodes)
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update_node(n);
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// viz -0
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next_script();
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cmd(merge_dbl_buf | merge_id_conn | merge_maxfan);
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// viz -1
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next_script();
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cmd(merge_dbl_buf | merge_id_conn | merge_tag_any | merge_maxfan);
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// viz -2
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next_script();
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cmd(merge_tag_buf | merge_dbl_buf | merge_bi_conn | merge_id_conn | merge_term);
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cmd(merge_tag_any | merge_dbl_buf | merge_bi_conn | merge_id_conn | merge_maxfan);
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cmd(merge_id_conn | merge_term | merge_small | merge_maxfan);
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// viz -3
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next_script();
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cmd(merge_tag_buf | merge_dbl_buf | merge_bi_conn | merge_id_conn | merge_term);
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cmd(merge_tag_any | merge_dbl_buf | merge_bi_conn | merge_id_conn);
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cmd(merge_id_conn | merge_term | merge_small | merge_maxfan);
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mean_group_size /= GetSize(nonterm_nodes);
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rms_group_size = sqrt(rms_group_size / GetSize(nonterm_nodes));
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}
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return buffer;
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void update_tags()
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{
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std::function<void(GraphNode*,int,bool)> up_down_prop_tag =
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[&](GraphNode *g, int index, bool down)
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{
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for (auto n : (down ? g->downstream_ : g->upstream_)) {
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if (n->tag(index, down ? 2 : 1)) {
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if (!n->terminal)
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up_down_prop_tag(n, index, down);
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tag_count++;
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}
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}
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};
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bool merge(merge_flags_t flags)
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tag_count = 0;
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for (auto g : nodes)
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g->tags().clear();
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for (auto g : term_nodes) {
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up_down_prop_tag(g, g->index, false);
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up_down_prop_tag(g, g->index, true);
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}
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for (auto g : nodes)
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g->tags().sort();
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}
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bool update()
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{
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dict<GraphNode*, pool<int>, hash_ptr_ops> node_tags;
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if (!dirty) {
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log(" Largest non-term group sizes: ");
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for (int i = 0; i < config.large_group_count; i++)
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log("%d%s", max_group_sizes[i], i+1 == config.large_group_count ? ".\n" : " ");
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bool did_something = false;
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while (true)
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// log(" Mean and Root-Mean-Square group sizes: %.1f and %.1f\n", mean_group_size, rms_group_size);
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return false;
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}
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dirty = false;
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update_nodes();
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update_tags();
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log(" Status: %d nodes (%d term and %d non-term), %d edges, and %d tags\n",
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GetSize(nodes), GetSize(term_nodes), GetSize(nonterm_nodes), edge_count, tag_count);
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return true;
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}
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void merge(GraphNode *g, GraphNode *n)
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{
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if (node_tags.empty() || (flags & merge_tag_buf) != 0) {
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std::function<void(GraphNode*,int,bool)> downprop_tag = [&](GraphNode *g, int tag, bool last) {
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auto &tags = node_tags[g];
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auto it = tags.find(tag);
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if (it != tags.end()) return;
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tags.insert(tag);
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if (last) return;
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for (auto n : g->downstream())
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downprop_tag(n->get(), tag, n->terminal);
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};
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g = g->get();
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n = n->get();
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std::function<void(GraphNode*,int,bool)> upprop_tag = [&](GraphNode *g, int tag, bool last) {
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auto &tags = node_tags[g];
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auto it = tags.find(tag);
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if (it != tags.end()) return;
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tags.insert(tag);
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if (last) return;
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for (auto n : g->upstream())
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upprop_tag(n->get(), tag, n->terminal);
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};
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log_assert(!g->nomerge);
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log_assert(!n->nomerge);
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log_assert(g->terminal == n->terminal);
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int tag = 0;
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node_tags.clear();
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for (auto g : nodes) {
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if (g->replaced || !g->terminal) continue;
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downprop_tag(g, ++tag, false);
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upprop_tag(g, ++tag, false);
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}
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if (g == n) return;
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for (auto v : n->names_)
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g->names_.insert(v);
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for (auto v : n->tags_)
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g->tags_[v.first] |= v.second;
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for (auto v : n->upstream_) {
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if (g != (v = v->get()))
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g->upstream_.insert(v);
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}
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vector<pair<GraphNode*,GraphNode*>> queued_merges;
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typedef pair<pool<GraphNode*, hash_ptr_ops>, pool<GraphNode*, hash_ptr_ops>> node_conn_t;
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dict<node_conn_t, pool<GraphNode*, hash_ptr_ops>> nodes_by_conn[2];
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for (auto g : nodes) {
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if (g->replaced || g->nomerge) continue;
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if ((flags & merge_term) == 0 && g->terminal) continue;
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if ((flags & merge_id_conn) != 0)
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nodes_by_conn[g->terminal][node_conn_t(g->upstream(), g->downstream())].insert(g);
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if ((flags & merge_tag_any) != 0 || ((flags & merge_tag_buf) != 0 && GetSize(g->downstream()) == 1)) {
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for (auto n : g->downstream()) {
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if (g->terminal != n->terminal || n->nomerge) continue;
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if (node_tags[g] != node_tags[n->get()]) continue;
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queued_merges.push_back(pair<GraphNode*,GraphNode*>(g, n->get()));
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}
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for (auto v : n->downstream_) {
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if (g != (v = v->get()))
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g->downstream_.insert(v);
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}
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if ((flags & merge_dbl_buf) != 0) {
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if (GetSize(g->downstream()) == 1) {
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auto n = (*g->downstream().begin())->get();
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if (g->terminal != n->terminal || n->nomerge) continue;
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if (GetSize(n->downstream()) != 1) continue;
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queued_merges.push_back(pair<GraphNode*,GraphNode*>(g, n));
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}
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}
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n->names_.clear();
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n->tags_.clear();
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n->upstream_.clear();
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n->downstream_.clear();
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if ((flags & merge_bi_conn) != 0) {
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for (auto n : g->downstream()) {
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if (g->terminal != n->terminal || n->nomerge) continue;
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if (!n->downstream().count(g)) continue;
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queued_merges.push_back(pair<GraphNode*,GraphNode*>(g, n));
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}
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}
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if ((flags & merge_small) != 0 && !g->terminal && GetSize(g->names()) < 10) {
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GraphNode *best = nullptr;
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for (auto n : g->downstream()) {
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if (n->terminal || n->nomerge || GetSize(n->names()) > 10-GetSize(g->names())) continue;
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if (best && GetSize(best->names()) <= GetSize(n->names())) continue;
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best = n;
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}
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for (auto n : g->upstream()) {
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if (n->terminal || n->nomerge || GetSize(n->names()) > 10-GetSize(g->names())) continue;
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if (best && GetSize(best->names()) <= GetSize(n->names())) continue;
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best = n;
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}
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if (best) queued_merges.push_back(pair<GraphNode*,GraphNode*>(g, best));
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}
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}
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if ((flags & merge_id_conn) != 0) {
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for (int term = 0; term < 2; term++) {
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for (auto &grp : nodes_by_conn[term]) {
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auto it = grp.second.begin();
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auto first = *it;
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while (++it != grp.second.end())
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queued_merges.push_back(pair<GraphNode*,GraphNode*>(first, *it));
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}
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}
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}
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int count_merges = 0;
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int smallest_merge_idx = -1;
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int smallest_merge_size = 0;
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for (int merge_idx = 0; merge_idx < GetSize(queued_merges); merge_idx++) {
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auto &m = queued_merges[merge_idx];
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auto g = m.first->get(), n = m.second->get();
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if (g == n) continue;
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if (!g->terminal)
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{
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int g_size = GetSize(g->names());
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int n_size = GetSize(n->names());
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int total_size = g_size + n_size;
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if (total_size > config.max_size) continue;
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if (smallest_merge_idx < 0 || total_size < smallest_merge_size) {
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smallest_merge_idx = merge_idx;
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smallest_merge_size = total_size;
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}
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if (total_size > max_group_sizes[1] + max_group_sizes[4]) continue;
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if (g_size >= max_group_sizes[0] && max_group_sizes[0] != max_group_sizes[4]) continue;
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if (n_size >= max_group_sizes[0] && max_group_sizes[0] != max_group_sizes[4]) continue;
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if ((flags & merge_maxfan) != 0) {
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auto &g_upstream = g->upstream(), &g_downstream = g->downstream();
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auto &n_upstream = n->upstream(), &n_downstream = n->downstream();
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if (GetSize(g_upstream) > config.max_fanin) continue;
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if (GetSize(n_upstream) > config.max_fanin) continue;
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if (GetSize(g_downstream) > config.max_fanout) continue;
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if (GetSize(n_downstream) > config.max_fanout) continue;
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|
||||
pool<GraphNode*, hash_ptr_ops> combined_upstream = g_upstream;
|
||||
combined_upstream.insert(n_upstream.begin(), n_upstream.end());
|
||||
|
||||
pool<GraphNode*, hash_ptr_ops> combined_downstream = g_downstream;
|
||||
combined_downstream.insert(n_downstream.begin(), n_downstream.end());
|
||||
|
||||
pool<GraphNode*, hash_ptr_ops> combined_conns = combined_upstream;
|
||||
combined_conns.insert(combined_downstream.begin(), combined_downstream.end());
|
||||
|
||||
if (GetSize(combined_upstream) > config.max_fanin) continue;
|
||||
if (GetSize(combined_downstream) > config.max_fanout) continue;
|
||||
if (GetSize(combined_conns) > config.max_conns) continue;
|
||||
}
|
||||
}
|
||||
|
||||
g->replace(n);
|
||||
count_merges++;
|
||||
}
|
||||
if (count_merges == 0 && smallest_merge_idx >= 0) {
|
||||
auto &m = queued_merges[smallest_merge_idx];
|
||||
auto g = m.first->get(), n = m.second->get();
|
||||
log(" Merging only the smallest node pair: %d + %d -> %d\n",
|
||||
GetSize(g->names()), GetSize(n->names()), smallest_merge_size);
|
||||
g->replace(n);
|
||||
count_merges++;
|
||||
} else {
|
||||
if (count_merges == 0) return did_something;
|
||||
log(" Merged %d node pairs.\n", count_merges);
|
||||
}
|
||||
did_something = true;
|
||||
cleanup();
|
||||
}
|
||||
dirty = true;
|
||||
n->replaced = g;
|
||||
}
|
||||
|
||||
Graph(Module *module, const VizConfig &config) : module(module), config(config)
|
||||
{
|
||||
log("Running 'viz -%d' for module %s:\n", config.effort, log_id(module));
|
||||
log(" Phase %d: Construct initial graph\n", phase_counter++);
|
||||
|
||||
SigMap sigmap(module);
|
||||
dict<SigBit, GraphNode*> wire_nodes;
|
||||
|
||||
|
|
@ -410,10 +295,12 @@ struct Graph {
|
|||
if (it == wire_nodes.end())
|
||||
wire_nodes[bit] = g;
|
||||
else
|
||||
g->replace(it->second);
|
||||
merge(g, it->second);
|
||||
}
|
||||
}
|
||||
|
||||
pool<GraphNode*, hash_ptr_ops> excluded;
|
||||
|
||||
for (auto grp : config.groups)
|
||||
{
|
||||
GraphNode *g = nullptr;
|
||||
|
|
@ -432,12 +319,16 @@ struct Graph {
|
|||
if (grp.first == VizConfig::TYPE_G) {
|
||||
if (g) {
|
||||
if (!n->nomerge)
|
||||
g->replace(n);
|
||||
merge(g, n);
|
||||
} else
|
||||
g = n;
|
||||
} else { // VizConfig::TYPE_U
|
||||
} else if (grp.first == VizConfig::TYPE_U) {
|
||||
n->nomerge = true;
|
||||
}
|
||||
} else if (grp.first == VizConfig::TYPE_X) {
|
||||
n->nomerge = true;
|
||||
excluded.insert(n);
|
||||
} else
|
||||
log_abort();
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -460,22 +351,27 @@ struct Graph {
|
|||
if (!bit.wire) continue;
|
||||
auto it = wire_nodes.find(bit);
|
||||
if (it != wire_nodes.end()) {
|
||||
if (!excluded.count(it->second)) {
|
||||
g->upstream().insert(it->second);
|
||||
it->second->downstream().insert(g);
|
||||
}
|
||||
} else {
|
||||
sig_users[bit].insert(g);
|
||||
}
|
||||
}
|
||||
if (cell->output(conn.first))
|
||||
for (auto bit : sigmap(conn.second)) {
|
||||
if (!bit.wire) continue;
|
||||
auto it = wire_nodes.find(bit);
|
||||
if (it != wire_nodes.end()) {
|
||||
if (!excluded.count(it->second)) {
|
||||
g->downstream().insert(it->second);
|
||||
it->second->upstream().insert(g);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
for (auto cell : module->selected_cells()) {
|
||||
auto g = cell_nodes.at(cell);
|
||||
|
|
@ -492,7 +388,258 @@ struct Graph {
|
|||
}
|
||||
}
|
||||
|
||||
cleanup();
|
||||
update();
|
||||
}
|
||||
|
||||
int compare_tags(GraphNode *g, GraphNode *n, bool strict_mode)
|
||||
{
|
||||
if (GetSize(g->tags()) > GetSize(n->tags()))
|
||||
return compare_tags(n, g, strict_mode);
|
||||
|
||||
if (g->tags().empty())
|
||||
return 100;
|
||||
|
||||
int matched_tags = 0;
|
||||
for (auto it : g->tags()) {
|
||||
auto g_tag = it.second;
|
||||
auto n_tag = n->tag(it.first);
|
||||
if (!g_tag || !n_tag) continue;
|
||||
if (g_tag == n_tag)
|
||||
matched_tags += 2;
|
||||
else if (!strict_mode && ((g_tag == 1 && n_tag == 3) ||
|
||||
(g_tag == 3 && n_tag == 1)))
|
||||
matched_tags += 1;
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
|
||||
return (100*matched_tags) / GetSize(g->tags());
|
||||
}
|
||||
|
||||
int phase(bool term, int effort)
|
||||
{
|
||||
log(" Phase %d: Merge %sterminal nodes with effort level %d\n", phase_counter++, term ? "" : "non-", effort);
|
||||
int start_replaced_nodes = GetSize(replaced_nodes);
|
||||
|
||||
do {
|
||||
dict<int,pool<pair<int,int>>> candidates;
|
||||
auto queue = [&](GraphNode *g, GraphNode *n) -> bool {
|
||||
if (g->terminal != n->terminal)
|
||||
return false;
|
||||
if (g->nomerge || n->nomerge)
|
||||
return false;
|
||||
int sz = GetSize(g->names()) + GetSize(n->names());
|
||||
if (g->index < n->index)
|
||||
candidates[sz].insert(pair<int,int>(g->index, n->index));
|
||||
else if (g->index != n->index)
|
||||
candidates[sz].insert(pair<int,int>(n->index, g->index));
|
||||
return true;
|
||||
};
|
||||
|
||||
int last_candidates_size = 0;
|
||||
const char *last_section_header = nullptr;
|
||||
auto header = [&](const char *p = nullptr) {
|
||||
if (GetSize(candidates) != last_candidates_size && last_section_header)
|
||||
log(" Found %d cadidates of type '%s'.\n",
|
||||
GetSize(candidates) - last_candidates_size, last_section_header);
|
||||
last_candidates_size = GetSize(candidates);
|
||||
last_section_header = p;
|
||||
};
|
||||
|
||||
{
|
||||
header("Any nodes with identical connections");
|
||||
typedef pair<pool<GraphNode*, hash_ptr_ops>, pool<GraphNode*, hash_ptr_ops>> node_conn_t;
|
||||
dict<node_conn_t, pool<GraphNode*, hash_ptr_ops>> nodes_by_conn;
|
||||
for (auto g : term ? term_nodes : nonterm_nodes) {
|
||||
auto &entry = nodes_by_conn[node_conn_t(g->upstream(), g->downstream())];
|
||||
for (auto n : entry)
|
||||
queue(g, n);
|
||||
entry.insert(g);
|
||||
}
|
||||
}
|
||||
|
||||
if (!candidates.empty() || effort < 1) goto execute;
|
||||
|
||||
if (!term) {
|
||||
header("Source-Sink with identical tags");
|
||||
for (auto g : nonterm_nodes) {
|
||||
for (auto n : g->downstream()) {
|
||||
if (n->terminal) continue;
|
||||
if (g->tags() == n->tags()) queue(g, n);
|
||||
}
|
||||
}
|
||||
|
||||
header("Sibblings with identical tags");
|
||||
for (auto g : nonterm_nodes) {
|
||||
auto process_conns = [&](const pool<GraphNode*, hash_ptr_ops> &stream) {
|
||||
dict<std::vector<int>, pool<GraphNode*, hash_ptr_ops>> nodes_by_tags;
|
||||
for (auto n : stream) {
|
||||
if (n->terminal) continue;
|
||||
std::vector<int> key;
|
||||
for (auto kv : n->tags())
|
||||
key.push_back(kv.first), key.push_back(kv.second);
|
||||
auto &entry = nodes_by_tags[key];
|
||||
for (auto m : entry) queue(n, m);
|
||||
entry.insert(n);
|
||||
}
|
||||
};
|
||||
process_conns(g->upstream());
|
||||
process_conns(g->downstream());
|
||||
}
|
||||
}
|
||||
|
||||
if (!candidates.empty() || effort < 2) goto execute;
|
||||
|
||||
if (!term) {
|
||||
header("Nodes with single fan-out and compatible tags");
|
||||
for (auto g : nonterm_nodes) {
|
||||
if (GetSize(g->downstream()) != 1) continue;
|
||||
auto n = *g->downstream().begin();
|
||||
if (!n->terminal && compare_tags(g, n, true)) queue(g, n);
|
||||
}
|
||||
|
||||
header("Nodes with single fan-in and compatible tags");
|
||||
for (auto g : nonterm_nodes) {
|
||||
if (GetSize(g->upstream()) != 1) continue;
|
||||
auto n = *g->upstream().begin();
|
||||
if (!n->terminal && compare_tags(g, n, true)) queue(g, n);
|
||||
}
|
||||
}
|
||||
|
||||
if (!candidates.empty() || effort < 3) goto execute;
|
||||
|
||||
if (!term) {
|
||||
header("Connected nodes with similar tags (strict)");
|
||||
for (auto g : nonterm_nodes) {
|
||||
for (auto n : g->downstream())
|
||||
if (!n->terminal && compare_tags(g, n, true) > config.similar_thresh) queue(g, n);
|
||||
}
|
||||
}
|
||||
|
||||
if (!candidates.empty() || effort < 4) goto execute;
|
||||
|
||||
if (!term) {
|
||||
header("Sibblings with similar tags (strict)");
|
||||
for (auto g : nonterm_nodes) {
|
||||
auto process_conns = [&](const pool<GraphNode*, hash_ptr_ops> &stream) {
|
||||
std::vector<GraphNode*> nodes;
|
||||
for (auto n : stream)
|
||||
if (!n->terminal) nodes.push_back(n);
|
||||
for (int i = 0; i < GetSize(nodes); i++)
|
||||
for (int j = 0; j < i; j++)
|
||||
if (compare_tags(nodes[i], nodes[j], true) > config.similar_thresh)
|
||||
queue(nodes[i], nodes[j]);
|
||||
};
|
||||
process_conns(g->upstream());
|
||||
process_conns(g->downstream());
|
||||
}
|
||||
}
|
||||
|
||||
if (!candidates.empty() || effort < 5) goto execute;
|
||||
|
||||
if (!term) {
|
||||
header("Connected nodes with similar tags (non-strict)");
|
||||
for (auto g : nonterm_nodes) {
|
||||
for (auto n : g->downstream())
|
||||
if (!n->terminal && compare_tags(g, n, false) > config.similar_thresh) queue(g, n);
|
||||
}
|
||||
}
|
||||
|
||||
if (!candidates.empty() || effort < 6) goto execute;
|
||||
|
||||
if (!term) {
|
||||
header("Sibblings with similar tags (non-strict)");
|
||||
for (auto g : nonterm_nodes) {
|
||||
auto process_conns = [&](const pool<GraphNode*, hash_ptr_ops> &stream) {
|
||||
std::vector<GraphNode*> nodes;
|
||||
for (auto n : stream)
|
||||
if (!n->terminal) nodes.push_back(n);
|
||||
for (int i = 0; i < GetSize(nodes); i++)
|
||||
for (int j = 0; j < i; j++)
|
||||
if (compare_tags(nodes[i], nodes[j], false) > config.similar_thresh)
|
||||
queue(nodes[i], nodes[j]);
|
||||
};
|
||||
process_conns(g->upstream());
|
||||
process_conns(g->downstream());
|
||||
}
|
||||
}
|
||||
|
||||
if (!candidates.empty() || effort < 7) goto execute;
|
||||
|
||||
{
|
||||
header("Any nodes with identical fan-in or fan-out");
|
||||
dict<pool<GraphNode*, hash_ptr_ops>, pool<GraphNode*, hash_ptr_ops>> nodes_by_conn[2];
|
||||
for (auto g : term ? term_nodes : nonterm_nodes) {
|
||||
auto &up_entry = nodes_by_conn[0][g->upstream()];
|
||||
auto &down_entry = nodes_by_conn[1][g->downstream()];
|
||||
for (auto n : up_entry) queue(g, n);
|
||||
for (auto n : down_entry) queue(g, n);
|
||||
up_entry.insert(g);
|
||||
down_entry.insert(g);
|
||||
}
|
||||
}
|
||||
|
||||
if (!candidates.empty() || effort < 8) goto execute;
|
||||
|
||||
if (!term) {
|
||||
header("Connected nodes with similar tags (lax)");
|
||||
for (auto g : nonterm_nodes) {
|
||||
for (auto n : g->downstream())
|
||||
if (!n->terminal && compare_tags(g, n, false)) queue(g, n);
|
||||
}
|
||||
}
|
||||
|
||||
if (!candidates.empty() || effort < 9) goto execute;
|
||||
|
||||
if (!term) {
|
||||
header("Sibblings with similar tags (lax)");
|
||||
for (auto g : nonterm_nodes) {
|
||||
auto process_conns = [&](const pool<GraphNode*, hash_ptr_ops> &stream) {
|
||||
std::vector<GraphNode*> nodes;
|
||||
for (auto n : stream)
|
||||
if (!n->terminal) nodes.push_back(n);
|
||||
for (int i = 0; i < GetSize(nodes); i++)
|
||||
for (int j = 0; j < i; j++)
|
||||
if (compare_tags(nodes[i], nodes[j], false))
|
||||
queue(nodes[i], nodes[j]);
|
||||
};
|
||||
process_conns(g->upstream());
|
||||
process_conns(g->downstream());
|
||||
}
|
||||
}
|
||||
|
||||
execute:
|
||||
header();
|
||||
candidates.sort();
|
||||
bool small_mode = false;
|
||||
bool medium_mode = false;
|
||||
for (auto &candidate_group : candidates) {
|
||||
for (auto &candidate : candidate_group.second) {
|
||||
auto g = node(candidate.first);
|
||||
auto n = node(candidate.second);
|
||||
if (!term) {
|
||||
int sz = GetSize(g->names()) + GetSize(n->names());
|
||||
if (sz <= config.small_group_thresh)
|
||||
small_mode = true;
|
||||
else if (small_mode && sz >= max_group_sizes.back())
|
||||
continue;
|
||||
if (sz <= max_group_sizes.front())
|
||||
medium_mode = true;
|
||||
else if (medium_mode && sz > max_group_sizes.front())
|
||||
continue;
|
||||
}
|
||||
merge(g, n);
|
||||
}
|
||||
}
|
||||
if (small_mode)
|
||||
log(" Using 'small-mode' to prevent big groups.\n");
|
||||
else if (medium_mode)
|
||||
log(" Using 'medium-mode' to prevent big groups.\n");
|
||||
} while (update());
|
||||
|
||||
int merged_nodes = GetSize(replaced_nodes) - start_replaced_nodes;
|
||||
log(" Merged a total of %d nodes.\n", merged_nodes);
|
||||
return merged_nodes;
|
||||
}
|
||||
};
|
||||
|
||||
|
|
@ -504,28 +651,17 @@ struct VizWorker
|
|||
|
||||
VizWorker(Module *module, const VizConfig &cfg) : config(cfg), module(module), graph(module, config)
|
||||
{
|
||||
auto &scripts = Graph::scripts();
|
||||
config.script = std::min(GetSize(scripts)-1, config.script);
|
||||
auto &script = scripts.at(config.script);
|
||||
|
||||
if (config.max_size < 0)
|
||||
config.max_size = graph.nonterm_nodes_cnt / 3;
|
||||
|
||||
auto log_stats = [&](const char *sp, const char *p) {
|
||||
log("%s%s maximum group sizes are ", sp, p);
|
||||
for (int i = 0; i < 5; i++)
|
||||
log("%d%s", graph.max_group_sizes[i], i==3 ? ", and " : i == 4 ? ".\n" : ", ");
|
||||
log("%s%s number of terminal nodes is %d.\n", sp, p, graph.term_nodes_cnt);
|
||||
log("%s%s number of non-terminal nodes is %d.\n", sp, p, graph.nonterm_nodes_cnt);
|
||||
};
|
||||
|
||||
log("Running 'viz -%d' for module %s:\n", config.script, log_id(module));
|
||||
log_stats(" ", "Initial");
|
||||
|
||||
for (int i = 0; i < GetSize(script); i++) {
|
||||
log(" Stage-%d merge loop:\n", i+1);
|
||||
graph.merge(script[i]);
|
||||
log_stats(" ", i+1 == GetSize(script) ? "Final" : "New");
|
||||
for (int effort = 0; effort <= config.effort; effort++) {
|
||||
bool first = true;
|
||||
while (1) {
|
||||
if (!graph.phase(false, effort) && !first) break;
|
||||
if (!graph.phase(true, effort)) break;
|
||||
first = false;
|
||||
}
|
||||
log(" %s: %d nodes (%d term and %d non-term), %d edges, and %d tags\n",
|
||||
effort == config.effort ? "Final" : "Status", GetSize(graph.nodes),
|
||||
GetSize(graph.term_nodes), GetSize(graph.nonterm_nodes),
|
||||
graph.edge_count, graph.tag_count);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -537,9 +673,8 @@ struct VizWorker
|
|||
dict<GraphNode*, std::vector<std::string>, hash_ptr_ops> extra_lines;
|
||||
dict<GraphNode*, GraphNode*, hash_ptr_ops> bypass_nodes;
|
||||
|
||||
for (auto g : graph.nodes) {
|
||||
if (!g->terminal || g->nomerge) continue;
|
||||
if (GetSize(g->upstream()) != 1) continue;
|
||||
for (auto g : graph.term_nodes) {
|
||||
if (g->nomerge || GetSize(g->upstream()) != 1) continue;
|
||||
if (!g->downstream().empty() && g->downstream() != g->upstream()) continue;
|
||||
auto n = *(g->upstream().begin());
|
||||
if (n->terminal) continue;
|
||||
|
|
@ -560,7 +695,7 @@ struct VizWorker
|
|||
label = label + (label.empty() ? "" : "\\n") + log_id(n);
|
||||
fprintf(f, "\tn%d [shape=rectangle,label=\"%s\"];\n", g->index, label.c_str());
|
||||
} else {
|
||||
std::string label = stringf("grp=%d | %d cells", g->index, GetSize(g->names()));
|
||||
std::string label = stringf("vg=%d | %d cells", g->index, GetSize(g->names()));
|
||||
std::string shape = "oval";
|
||||
if (extra_lines.count(g)) {
|
||||
label += label.empty() ? "" : "\\n";
|
||||
|
|
@ -573,8 +708,7 @@ struct VizWorker
|
|||
}
|
||||
|
||||
pool<std::string> edges;
|
||||
for (int i = 0; i < GetSize(graph.nodes); i++) {
|
||||
auto g = graph.nodes[i];
|
||||
for (auto g : graph.nodes) {
|
||||
g = bypass_nodes.at(g, g);
|
||||
for (auto n : g->downstream()) {
|
||||
n = bypass_nodes.at(n, n);
|
||||
|
|
@ -627,15 +761,20 @@ struct VizPass : public Pass {
|
|||
log(" -u <selection>\n");
|
||||
log(" manually define a unique group for each wire in the selection.\n");
|
||||
log("\n");
|
||||
log(" -x <selection>\n");
|
||||
log(" manually exclude wires from being considered. (usually this is\n");
|
||||
log(" used for global signals, such as reset.)\n");
|
||||
log("\n");
|
||||
log(" -G <selection_expr> .\n");
|
||||
log(" -U <selection_expr> .\n");
|
||||
log(" like -u and -g, but parse all arguments up to a terminating . argument\n");
|
||||
log(" -X <selection_expr> .\n");
|
||||
log(" like -u, -g, and -x, but parse all arguments up to a terminating .\n");
|
||||
log(" as a single select expression. (see 'help select' for details)\n");
|
||||
log("\n");
|
||||
log(" -0, -1, -2, -3, -4, -5, -6, -7, -8, -9\n");
|
||||
log(" select effort level. each level corresponds to an incresingly more\n");
|
||||
log(" aggressive sequence of strategies for merging nodes of the data flow\n");
|
||||
log(" graph. (default: %d)\n", VizConfig().script);
|
||||
log(" graph. (default: %d)\n", VizConfig().effort);
|
||||
log("\n");
|
||||
log("When no <format> is specified, 'dot' is used. When no <format> and <viewer> is\n");
|
||||
log("specified, 'xdot' is used to display the schematic (POSIX systems only).\n");
|
||||
|
|
@ -692,24 +831,25 @@ struct VizPass : public Pass {
|
|||
background= "";
|
||||
continue;
|
||||
}
|
||||
if ((arg == "-g" || arg == "-u" || arg == "-G" || arg == "-U") && argidx+1 < args.size()) {
|
||||
if ((arg == "-g" || arg == "-u" || arg == "-x" || arg == "-G" || arg == "-U" || arg == "-X") && argidx+1 < args.size()) {
|
||||
int numargs = 1;
|
||||
int first_arg = ++argidx;
|
||||
if (arg == "-G" || arg == "-U") {
|
||||
if (arg == "-G" || arg == "-U" || arg == "-X") {
|
||||
while (argidx+1 < args.size()) {
|
||||
if (args[++argidx] == ".") break;
|
||||
numargs++;
|
||||
}
|
||||
}
|
||||
handle_extra_select_args(this, args, first_arg, first_arg+numargs, design);
|
||||
auto type = arg == "-g" || arg == "-G" ? VizConfig::TYPE_G : VizConfig::TYPE_U;
|
||||
auto type = arg == "-g" || arg == "-G" ? VizConfig::TYPE_G :
|
||||
arg == "-u" || arg == "-U" ? VizConfig::TYPE_U : VizConfig::TYPE_X;
|
||||
config.groups.push_back({type, design->selection_stack.back()});
|
||||
design->selection_stack.pop_back();
|
||||
continue;
|
||||
}
|
||||
if (arg == "-0" || arg == "-1" || arg == "-2" || arg == "-3" || arg == "-4" ||
|
||||
arg == "-5" || arg == "-6" || arg == "-7" || arg == "-8" || arg == "-9") {
|
||||
config.script = arg[1] - '0';
|
||||
config.effort = arg[1] - '0';
|
||||
continue;
|
||||
}
|
||||
break;
|
||||
|
|
@ -746,12 +886,12 @@ struct VizPass : public Pass {
|
|||
for (auto module : modlist) {
|
||||
VizWorker worker(module, config);
|
||||
|
||||
if (format != "dot" && worker.graph.term_nodes_cnt + worker.graph.nonterm_nodes_cnt > 150) {
|
||||
if (format != "dot" && GetSize(worker.graph.nodes) > 200) {
|
||||
if (format.empty()) {
|
||||
log_warning("Suppressing module in output as graph size exceeds 150 nodes.\n");
|
||||
log_warning("Suppressing module in output as graph size exceeds 200 nodes.\n");
|
||||
continue;
|
||||
} else {
|
||||
log_warning("Changing format to 'dot' as graph size exceeds 150 nodes.\n");
|
||||
log_warning("Changing format to 'dot' as graph size exceeds 200 nodes.\n");
|
||||
format = "dot";
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue