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self-contained function for merge_tf

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Nikolaj Bjorner 2021-03-16 15:24:48 -07:00
parent 0949ad26c2
commit 0b8939d86e
2 changed files with 2 additions and 1 deletions
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1
src/ast/euf/euf_enode.h
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@ -161,6 +161,7 @@ namespace euf {
bool commutative() const { return m_commutative; }
void mark_interpreted() { SASSERT(num_args() == 0); m_interpreted = true; }
bool merge_enabled() const { return m_merge_enabled; }
bool merge_tf() const { return merge_enabled() && (class_size() > 1 || num_parents() > 0 || num_args() > 0); }
enode* get_arg(unsigned i) const { SASSERT(i < num_args()); return m_args[i]; }
unsigned hash() const { return m_expr->hash(); }

2
src/sat/smt/euf_solver.cpp
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@ -308,7 +308,7 @@ namespace euf {
euf::enode* nb = n->get_arg(1);
m_egraph.merge(na, nb, c);
}
else if (n->merge_enabled() && (n->num_parents() > 0 || n->num_args() > 0)) {
else if (n->merge_tf()) {
euf::enode* nb = sign ? mk_false() : mk_true();
m_egraph.merge(n, nb, c);
}