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functinoal: twines

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This commit is contained in:
Emil J. Tywoniak 2026-06-24 11:53:14 +02:00
parent 5b5e7ce771
commit d8e09f4e0c
4 changed files with 56 additions and 47 deletions
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34
backends/functional/smtlib.cc
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@ -44,7 +44,8 @@ const char *reserved_keywords[] = {
};
struct SmtScope : public Functional::Scope<int> {
SmtScope() {
SmtScope(Design *design = nullptr) {
this->design = design;
for(const char **p = reserved_keywords; *p != nullptr; p++)
reserve(*p);
}
@ -72,15 +73,16 @@ class SmtStruct {
SmtSort sort;
std::string accessor;
};
idict<IdString> field_names;
idict<TwineRef> field_names;
vector<Field> fields;
SmtScope &scope;
Design *design;
public:
std::string name;
SmtStruct(std::string name, SmtScope &scope) : scope(scope), name(name) {}
void insert(IdString field_name, SmtSort sort) {
SmtStruct(std::string name, SmtScope &scope, Design *design) : scope(scope), design(design), name(name) {}
void insert(TwineRef field_name, SmtSort sort) {
field_names(field_name);
auto accessor = scope.unique_name("\\" + name + "_" + design->twines.unescaped_str(field_name));
auto accessor = scope.unique_name(design->twines.add("\\" + name + "_" + design->twines.unescaped_str(field_name)));
fields.emplace_back(Field{sort, accessor});
}
void write_definition(SExprWriter &w) {
@ -99,12 +101,12 @@ public:
w.open(list(name));
for(auto field_name : field_names) {
w << fn(field_name);
w.comment(field_name.unescape(), true);
w.comment(design->twines.unescaped_str(field_name), true);
}
w.close();
}
}
SExpr access(SExpr record, IdString name) {
SExpr access(SExpr record, TwineRef name) {
size_t i = field_names.at(name);
return list(fields[i].accessor, std::move(record));
}
@ -179,8 +181,8 @@ struct SmtPrintVisitor : public Functional::AbstractVisitor<SExpr> {
SExpr memory_read(Node, Node mem, Node addr) override { return list("select", n(mem), n(addr)); }
SExpr memory_write(Node, Node mem, Node addr, Node data) override { return list("store", n(mem), n(addr), n(data)); }
SExpr input(Node, IdString name, IdString kind) override { log_assert(kind == TW($input)); return input_struct.access("inputs", name); }
SExpr state(Node, IdString name, IdString kind) override { log_assert(kind == TW($state)); return state_struct.access("state", name); }
SExpr input(Node, TwineRef name, TwineRef kind) override { log_assert(kind == TW($input)); return input_struct.access("inputs", name); }
SExpr state(Node, TwineRef name, TwineRef kind) override { log_assert(kind == TW($state)); return state_struct.access("state", name); }
};
struct SmtModule {
@ -194,11 +196,11 @@ struct SmtModule {
SmtModule(Module *module)
: ir(Functional::IR::from_module(module))
, scope()
, name(scope.unique_name(module->name))
, input_struct(scope.unique_name(module->name.str() + "_Inputs"), scope)
, output_struct(scope.unique_name(module->name.str() + "_Outputs"), scope)
, state_struct(scope.unique_name(module->name.str() + "_State"), scope)
, scope(module->design)
, name(scope.unique_name(module->name.ref()))
, input_struct(scope.unique_name(module->design->twines.add(module->name.str() + "_Inputs")), scope, module->design)
, output_struct(scope.unique_name(module->design->twines.add(module->name.str() + "_Outputs")), scope, module->design)
, state_struct(scope.unique_name(module->design->twines.add(module->name.str() + "_State")), scope, module->design)
{
scope.reserve(name + "-initial");
for (auto input : ir.inputs())
@ -233,8 +235,8 @@ struct SmtModule {
w.comment(SmtSort(n.sort()).to_sexpr().to_string(), true);
}
w.open(list("pair"));
output_struct.write_value(w, [&](IdString name) { return node_to_sexpr(ir.output(name).value()); });
state_struct.write_value(w, [&](IdString name) { return node_to_sexpr(ir.state(name).next_value()); });
output_struct.write_value(w, [&](TwineRef name) { return node_to_sexpr(ir.output(name).value()); });
state_struct.write_value(w, [&](TwineRef name) { return node_to_sexpr(ir.state(name).next_value()); });
w.pop();
}