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minor fixes

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- ensure mk_extract performs simplification to distribute over extract and removing extract if the range is the entire bit-vector
- ensure bool_rewriter simplifeis disjunctions when applicable.
This commit is contained in:
Nikolaj Bjorner 2022-11-02 08:44:55 -07:00
parent 9fc4015c46
commit 1646a41b2f
9 changed files with 24 additions and 18 deletions
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7
src/ast/rewriter/mk_extract_proc.cpp
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@ -32,8 +32,15 @@ mk_extract_proc::~mk_extract_proc() {
}
app * mk_extract_proc::operator()(unsigned high, unsigned low, expr * arg) {
unsigned l, h;
while (m_util.is_extract(arg, l, h, arg)) {
low += l;
high += l;
}
ast_manager & m = m_util.get_manager();
sort * s = arg->get_sort();
if (low == 0 && high + 1 == m_util.get_bv_size(arg) && is_app(arg))
return to_app(arg);
if (m_low == low && m_high == high && m_domain == s)
return m.mk_app(m_f_cached, arg);
// m_f_cached has a reference to m_domain, so, I don't need to inc_ref m_domain