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perf improvements for #1979

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-12-04 10:13:55 -08:00
parent ea0d253308
commit 9e5aaf074e
3 changed files with 149 additions and 82 deletions
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25
src/ast/rewriter/seq_rewriter.h
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@ -31,31 +31,38 @@ class sym_expr {
enum ty {
t_char,
t_pred,
t_not,
t_range
};
ty m_ty;
sort* m_sort;
expr_ref m_t;
expr_ref m_s;
unsigned m_ref;
sym_expr(ty ty, expr_ref& t, expr_ref& s, sort* srt) : m_ty(ty), m_sort(srt), m_t(t), m_s(s), m_ref(0) {}
ty m_ty;
sort* m_sort;
sym_expr* m_expr;
expr_ref m_t;
expr_ref m_s;
unsigned m_ref;
sym_expr(ty ty, expr_ref& t, expr_ref& s, sort* srt, sym_expr* e) :
m_ty(ty), m_sort(srt), m_expr(e), m_t(t), m_s(s), m_ref(0) {}
public:
~sym_expr() { if (m_expr) m_expr->dec_ref(); }
expr_ref accept(expr* e);
static sym_expr* mk_char(expr_ref& t) { return alloc(sym_expr, t_char, t, t, t.get_manager().get_sort(t)); }
static sym_expr* mk_char(expr_ref& t) { return alloc(sym_expr, t_char, t, t, t.get_manager().get_sort(t), nullptr); }
static sym_expr* mk_char(ast_manager& m, expr* t) { expr_ref tr(t, m); return mk_char(tr); }
static sym_expr* mk_pred(expr_ref& t, sort* s) { return alloc(sym_expr, t_pred, t, t, s); }
static sym_expr* mk_range(expr_ref& lo, expr_ref& hi) { return alloc(sym_expr, t_range, lo, hi, lo.get_manager().get_sort(hi)); }
static sym_expr* mk_pred(expr_ref& t, sort* s) { return alloc(sym_expr, t_pred, t, t, s, nullptr); }
static sym_expr* mk_range(expr_ref& lo, expr_ref& hi) { return alloc(sym_expr, t_range, lo, hi, lo.get_manager().get_sort(hi), nullptr); }
static sym_expr* mk_not(ast_manager& m, sym_expr* e) { expr_ref f(m); e->inc_ref(); return alloc(sym_expr, t_not, f, f, e->get_sort(), e); }
void inc_ref() { ++m_ref; }
void dec_ref() { --m_ref; if (m_ref == 0) dealloc(this); }
std::ostream& display(std::ostream& out) const;
bool is_char() const { return m_ty == t_char; }
bool is_pred() const { return !is_char(); }
bool is_range() const { return m_ty == t_range; }
bool is_not() const { return m_ty == t_not; }
sort* get_sort() const { return m_sort; }
expr* get_char() const { SASSERT(is_char()); return m_t; }
expr* get_pred() const { SASSERT(is_pred()); return m_t; }
expr* get_lo() const { SASSERT(is_range()); return m_t; }
expr* get_hi() const { SASSERT(is_range()); return m_s; }
sym_expr* get_arg() const { SASSERT(is_not()); return m_expr; }
};
class sym_expr_manager {