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Add option :bv-sort-ac true

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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
This commit is contained in:
Leonardo de Moura 2013-03-24 14:59:29 -07:00
parent 9d0b0df985
commit a71bb549c6
5 changed files with 22 additions and 3 deletions
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10
src/ast/rewriter/bv_rewriter.cpp
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@ -64,6 +64,7 @@ void bv_rewriter::updt_local_params(params_ref const & _p) {
m_split_concat_eq = p.split_concat_eq();
m_udiv2mul = p.udiv2mul();
m_bvnot2arith = p.bvnot2arith();
m_bv_sort_ac = p.bv_sort_ac();
m_mkbv2num = _p.get_bool("mkbv2num", false);
}
@ -1315,7 +1316,7 @@ br_status bv_rewriter::mk_bv_or(unsigned num, expr * const * args, expr_ref & re
return BR_REWRITE2;
}
if (!flattened && !merged && (num_coeffs == 0 || (num_coeffs == 1 && !v1.is_zero()))) {
if (!flattened && !merged && (num_coeffs == 0 || (num_coeffs == 1 && !v1.is_zero())) && (!m_bv_sort_ac || is_sorted(num, args))) {
return BR_FAILED;
}
@ -1331,6 +1332,8 @@ br_status bv_rewriter::mk_bv_or(unsigned num, expr * const * args, expr_ref & re
result = new_args[0];
return BR_DONE;
default:
if (m_bv_sort_ac)
std::sort(new_args.begin(), new_args.end(), ast_to_lt());
result = m_util.mk_bv_or(new_args.size(), new_args.c_ptr());
return BR_DONE;
}
@ -1456,7 +1459,8 @@ br_status bv_rewriter::mk_bv_xor(unsigned num, expr * const * args, expr_ref & r
return BR_REWRITE3;
}
if (!merged && !flattened && (num_coeffs == 0 || (num_coeffs == 1 && !v1.is_zero() && v1 != (rational::power_of_two(sz) - numeral(1)))))
if (!merged && !flattened && (num_coeffs == 0 || (num_coeffs == 1 && !v1.is_zero() && v1 != (rational::power_of_two(sz) - numeral(1)))) &&
(!m_bv_sort_ac || is_sorted(num, args)))
return BR_FAILED;
ptr_buffer<expr> new_args;
@ -1497,6 +1501,8 @@ br_status bv_rewriter::mk_bv_xor(unsigned num, expr * const * args, expr_ref & r
}
__fallthrough;
default:
if (m_bv_sort_ac)
std::sort(new_args.begin(), new_args.end(), ast_to_lt());
result = m_util.mk_bv_xor(new_args.size(), new_args.c_ptr());
return BR_DONE;
}