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use op-cache for is-nullable

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-06-02 13:30:18 -07:00
parent e388055a33
commit bfb5c95b9a
3 changed files with 18 additions and 7 deletions
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1
src/ast/rewriter/seq_rewriter.h
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@ -311,6 +311,7 @@ public:
void add_seqs(expr_ref_vector const& ls, expr_ref_vector const& rs, expr_ref_pair_vector& new_eqs);
expr_ref is_nullable(expr* r);
expr_ref is_nullable_rec(expr* r);
bool has_cofactor(expr* r, expr_ref& cond, expr_ref& th, expr_ref& el);