mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-25 10:05:32 +00:00
Code Activity

tuning bit-vector operations

Browse source 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2015-12-21 13:09:03 +02:00
parent 1eebab355c
commit 8e26c97782
9 changed files with 271 additions and 94 deletions
Download patch file Download diff file Expand all files Collapse all files

47
src/tactic/bv/bit_blaster_tactic.h
View file

@ -1,32 +1,33 @@
/*++
/*++
Copyright (c) 2011 Microsoft Corporation
Module Name:
Module Name:
bit_blaster_tactic.h
Abstract:
Abstract:
Apply bit-blasting to a given goal.
Author:
Author:
Leonardo (leonardo) 2011-10-25
Notes:
--*/
Notes:
--*/
#ifndef BIT_BLASTER_TACTIC_H_
#define BIT_BLASTER_TACTIC_H_
#include"params.h"
#include"bit_blaster_rewriter.h"
class ast_manager;
class tactic;
#include"params.h"
#include"bit_blaster_rewriter.h"
class ast_manager;
class tactic;
tactic * mk_bit_blaster_tactic(ast_manager & m, params_ref const & p = params_ref());
tactic * mk_bit_blaster_tactic(ast_manager & m, bit_blaster_rewriter* rw, params_ref const & p = params_ref());
/*
/*
ADD_TACTIC("bit-blast", "reduce bit-vector expressions into SAT.", "mk_bit_blaster_tactic(m, p)")
*/
#endif
*/
#endif

20
src/tactic/core/solve_eqs_tactic.cpp
View file

@ -22,7 +22,7 @@ Revision History:
#include"occurs.h"
#include"cooperate.h"
#include"goal_shared_occs.h"
#include"ast_smt2_pp.h"
#include"ast_pp.h"
class solve_eqs_tactic : public tactic {
struct imp {
@ -92,21 +92,23 @@ class solve_eqs_tactic : public tactic {
}
// Use: (= x def) and (= def x)
bool trivial_solve(expr * lhs, expr * rhs, app_ref & var, expr_ref & def, proof_ref & pr) {
bool trivial_solve1(expr * lhs, expr * rhs, app_ref & var, expr_ref & def, proof_ref & pr) {
if (is_uninterp_const(lhs) && !m_candidate_vars.is_marked(lhs) && !occurs(lhs, rhs) && check_occs(lhs)) {
var = to_app(lhs);
def = rhs;
pr = 0;
return true;
}
else if (is_uninterp_const(rhs) && !m_candidate_vars.is_marked(rhs) && !occurs(rhs, lhs) && check_occs(rhs)) {
var = to_app(rhs);
def = lhs;
if (m_produce_proofs)
pr = m().mk_commutativity(m().mk_eq(lhs, rhs));
return true;
else {
return false;
}
return false;
}
bool trivial_solve(expr * lhs, expr * rhs, app_ref & var, expr_ref & def, proof_ref & pr) {
return
trivial_solve1(lhs, rhs, var, def, pr) ||
trivial_solve1(rhs, lhs, var, def, pr);
}
// (ite c (= x t1) (= x t2)) --> (= x (ite c t1 t2))