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Adding bv preprocessing techniques.

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Mikolas Janota 2016-09-01 17:22:49 +01:00 • committed by Christoph M. Wintersteiger
parent 5290cd1ff5
commit ec47a1df50
11 changed files with 1545 additions and 3 deletions
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10
src/ast/rewriter/bv_trailing.cpp
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@ -36,11 +36,14 @@ struct bv_trailing::imp {
: m_mk_extract(mk_extract)
, m_util(mk_extract.bvutil())
, m(mk_extract.m()) {
TRACE("bv-trailing", tout << "ctor\n";);
for (unsigned i = 0; i <= TRAILING_DEPTH; ++i)
m_count_cache[i] = NULL;
}
virtual ~imp() {
TRACE("bv-trailing", tout << "dtor\n";);
reset_cache(0);
}
@ -337,6 +340,7 @@ struct bv_trailing::imp {
if (depth == 0) return;
if (m_count_cache[depth] == NULL)
m_count_cache[depth] = alloc(map);
SASSERT(!m_count_cache[depth]->contains(e));
m.inc_ref(e);
m_count_cache[depth]->insert(e, std::make_pair(min, max));
TRACE("bv-trailing", tout << "caching@" << depth <<": " << mk_ismt2_pp(e, m) << '[' << m_util.get_bv_size(e) << "]\n: " << min << '-' << max << "\n";);
@ -359,11 +363,13 @@ struct bv_trailing::imp {
return true;
}
void reset_cache(unsigned condition) {
void reset_cache(const unsigned condition) {
SASSERT(m_count_cache[0] == NULL);
for (unsigned i = 1; i <= TRAILING_DEPTH; ++i) {
if (m_count_cache[i] == NULL) continue;
if (m_count_cache[i]->size() < condition) continue;
TRACE("bv-trailing", tout << "may reset cache " << i << " " << condition << "\n";);
if (condition && m_count_cache[i]->size() < condition) continue;
TRACE("bv-trailing", tout << "reset cache " << i << "\n";);
map::iterator it = m_count_cache[i]->begin();
map::iterator end = m_count_cache[i]->end();
for (; it != end; ++it) m.dec_ref(it->m_key);