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optimize var_subst

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This commit is contained in:
Nikolaj Bjorner 2024-10-03 18:14:47 -07:00
parent f5db6bf92b
commit a98c925069
3 changed files with 23 additions and 6 deletions
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14
src/ast/rewriter/var_subst.cpp
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@ -52,6 +52,20 @@ expr_ref var_subst::operator()(expr * n, unsigned num_args, expr * const * args)
rep(n, result);
return result;
}
if (is_app(n) && all_of(*to_app(n), [&](expr* arg) { return is_ground(arg) || is_var(arg); })) {
ptr_buffer<expr> new_args;
for (auto arg : *to_app(n)) {
if (is_ground(arg))
new_args.push_back(arg);
else {
unsigned idx = to_var(arg)->get_idx();
new_args.push_back(m_std_order ? args[idx] : args[num_args - idx - 1]);
}
}
result = m.mk_app(to_app(n)->get_decl(), new_args.size(), new_args.data());
// verbose_stream() << result << "\n";
return result;
}
SASSERT(is_well_sorted(result.m(), n));
m_reducer.reset();
if (m_std_order)