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fix(library/blast/simplifier): stack of caches for local context

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Daniel Selsam 2015-11-06 17:18:31 -08:00 committed by Leonardo de Moura
parent b81aa35221
commit 3f331a261a
1 changed files with 11 additions and 7 deletions
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18
src/library/blast/simplifier.cpp
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@ -113,8 +113,9 @@ class simplifier {
bool m_trace{get_simplify_trace()};
/* Cache */
typedef expr_bi_struct_map<result> simplify_cache;
std::map<name,simplify_cache,name_quick_cmp> m_simplify_cache;
typedef expr_bi_struct_map<result> simplify_cache;
typedef std::map<name,simplify_cache,name_quick_cmp> simplify_caches;
simplify_caches m_simplify_caches;
optional<result> cache_lookup(expr const & e);
void cache_save(expr const & e, result const & r);
@ -168,13 +169,13 @@ simplifier::simplifier(branch const & b, name const & rel):
/* Cache */
optional<result> simplifier::cache_lookup(expr const & e) {
simplify_cache & cache = m_simplify_cache[m_rel];
simplify_cache & cache = m_simplify_caches[m_rel];
auto it = cache.find(e);
if (it != cache.end()) return optional<result>(it->second);
return optional<result>();
}
void simplifier::cache_save(expr const & e, result const & r) {
simplify_cache & cache = m_simplify_cache[m_rel];
simplify_cache & cache = m_simplify_caches[m_rel];
cache.insert(mk_pair(e,r));
}
@ -237,7 +238,7 @@ result simplifier::simplify(expr const & e) {
flet<unsigned> inc_depth(m_depth, m_depth+1);
if (m_trace) {
ios().get_diagnostic_channel() << m_depth << "." << m_rel << ": " << e << "\n";
ios().get_diagnostic_channel() << m_depth << "." << m_rel << "." << m_local_ctx << " " << e << "\n";
}
if (m_num_steps > m_max_steps)
@ -530,7 +531,7 @@ result simplifier::try_congr(expr const & e, congr_rule const & cr) {
while (is_pi(m_type)) {
expr d = instantiate_rev(binding_domain(m_type), ls.size(), ls.data());
expr l = tmp_tctx->mk_tmp_local(d,binding_info(e));
ls.push_back(l);
ls.push_back(tmp_tctx->instantiate_uvars_mvars(l));
m_type = instantiate(binding_body(m_type),l);
}
@ -539,7 +540,10 @@ result simplifier::try_congr(expr const & e, congr_rule const & cr) {
lean_assert(valid);
{
flet<name> set_name(m_rel,const_name(h_rel));
flet<list<expr>> set_local_ctx(m_local_ctx,to_list(ls));
flet<list<expr> > set_local_ctx(m_local_ctx,append(m_local_ctx,to_list(ls)));
simplify_caches fresh_caches;
flet<simplify_caches> set_simplify_caches(m_simplify_caches,fresh_caches);
h_lhs = tmp_tctx->instantiate_uvars_mvars(h_lhs);
result r_congr_hyp = simplify(h_lhs);
expr hyp;