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add demodulator tactic based on demodulator-simplifier

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- some handling for commutative operators
- fix bug in demodulator_index where fwd and bwd are swapped
This commit is contained in:
Nikolaj Bjorner 2022-12-05 03:20:46 -08:00
parent 87095950cb
commit de916f50d6
5 changed files with 123 additions and 37 deletions
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9
src/ast/simplifiers/demodulator_simplifier.h
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@ -18,19 +18,22 @@ Author:
#include "util/uint_set.h"
class demodulator_index {
ast_manager& m;
obj_map<func_decl, uint_set*> m_fwd_index, m_bwd_index;
void add(func_decl* f, unsigned i, obj_map<func_decl, uint_set*>& map);
void del(func_decl* f, unsigned i, obj_map<func_decl, uint_set*>& map);
public:
demodulator_index(ast_manager& m): m(m) {}
~demodulator_index();
void reset();
void insert_fwd(func_decl* f, unsigned i) { add(f, i, m_fwd_index); }
void remove_fwd(func_decl* f, unsigned i) { del(f, i, m_fwd_index); }
void insert_bwd(expr* e, unsigned i);
void remove_bwd(expr* e, unsigned i);
bool find_fwd(func_decl* f, uint_set*& s) { return m_bwd_index.find(f, s); }
bool find_bwd(func_decl* f, uint_set*& s) { return m_fwd_index.find(f, s); }
bool find_fwd(func_decl* f, uint_set*& s) { return m_fwd_index.find(f, s); }
bool find_bwd(func_decl* f, uint_set*& s) { return m_bwd_index.find(f, s); }
bool empty() const { return m_fwd_index.empty(); }
std::ostream& display(std::ostream& out) const;
};
class demodulator_simplifier : public dependent_expr_simplifier {
@ -56,4 +59,6 @@ class demodulator_simplifier : public dependent_expr_simplifier {
demodulator_simplifier(ast_manager& m, params_ref const& p, dependent_expr_state& st);
void reduce() override;
char const* name() const override { return "demodulator"; }
};