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add op cache

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-06-02 12:52:42 -07:00
parent 023b630b5a
commit 4ef480e2a5
5 changed files with 76 additions and 7 deletions
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26
src/ast/rewriter/seq_rewriter.cpp
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@ -3849,3 +3849,29 @@ bool seq_rewriter::reduce_subsequence(expr_ref_vector& ls, expr_ref_vector& rs,
}
return true;
}
seq_rewriter::op_cache::op_cache(ast_manager& m):
m(m),
m_trail(m)
{}
expr* seq_rewriter::op_cache::find(decl_kind op, expr* a, expr* b) {
op_entry e(op, a, b, nullptr);
m_table.find(e);
return e.r;
}
void seq_rewriter::op_cache::insert(decl_kind op, expr* a, expr* b, expr* r) {
cleanup();
if (a) m_trail.push_back(a);
if (b) m_trail.push_back(b);
if (r) m_trail.push_back(r);
m_table.insert(op_entry(op, a, b, r));
}
void seq_rewriter::op_cache::cleanup() {
if (m_table.size() >= m_max_cache_size) {
m_trail.reset();
m_table.reset();
}
}