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-auto-top should check $abstract (deferred) modules with (* top *)

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This commit is contained in:
Eddie Hung 2019-08-28 19:59:25 -07:00
parent 34ae29295d
commit 116c249601
1 changed files with 31 additions and 0 deletions
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31
passes/hierarchy/hierarchy.cc
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@ -808,6 +808,37 @@ struct HierarchyPass : public Pass {
if (mod_it.second->get_bool_attribute("\\top"))
top_mod = mod_it.second;
if (top_mod != nullptr && auto_top_mode) {
IdString abstract_id = top_mod->name;
IdString top_name = abstract_id;
if (top_name.begins_with("$abstract"))
top_name = top_name.substr(strlen("$abstract"));
top_mod = design->module(top_name);
dict<RTLIL::IdString, RTLIL::Const> top_parameters;
for (auto &para : parameters) {
SigSpec sig_value;
if (!RTLIL::SigSpec::parse(sig_value, NULL, para.second))
log_cmd_error("Can't decode value '%s'!\n", para.second.c_str());
top_parameters[RTLIL::escape_id(para.first)] = sig_value.as_const();
}
if (top_mod == nullptr && design->module(abstract_id))
top_mod = design->module(design->module(abstract_id)->derive(design, top_parameters));
else if (top_mod != nullptr && !top_parameters.empty())
top_mod = design->module(top_mod->derive(design, top_parameters));
if (top_mod != nullptr && top_mod->name != top_name) {
Module *m = top_mod->clone();
m->name = top_name;
Module *old_mod = design->module(top_name);
if (old_mod)
design->remove(old_mod);
design->add(m);
top_mod = m;
}
}
if (top_mod == nullptr && auto_top_mode) {
log_header(design, "Finding top of design hierarchy..\n");
dict<Module*, int> db;