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corner case bug fixes #678

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corner case bug fixes #678

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d276fde
fix mockturtle wrw
MyskYko May 27, 2025
ad0aedf
fix mockturtle resize on referenced vector
MyskYko May 27, 2025
9545109
clang format
MyskYko Jul 10, 2025
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27 changes: 15 additions & 12 deletions include/mockturtle/algorithms/window_rewriting.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -315,6 +315,7 @@ class window_rewriting_impl
/* ensure that no dead nodes are reachable */
assert( count_reachable_dead_nodes( ntk ) == 0u );

bool fSuccess = true;
std::list<std::pair<node, signal>> substitutions;
insert_ntk( ntk, std::begin( signals ), std::end( signals ), win,
[&]( signal const& _new ) {
Expand All @@ -327,26 +328,28 @@ class window_rewriting_impl

/* ensure that _old is not in the TFI of _new */
// assert( !is_contained_in_tfi( ntk, ntk.get_node( _new ), ntk.get_node( _old ) ) );
if ( ps.filter_cyclic_substitutions &&
if ( fSuccess && ps.filter_cyclic_substitutions &&
call_with_stopwatch( st.time_window, [&]() { return is_contained_in_tfi( ntk, ntk.get_node( _new ), ntk.get_node( _old ) ); } ) )
{
std::cout << "undo resubstitution " << ntk.get_node( _old ) << std::endl;
substitutions.emplace_back( std::make_pair( ntk.get_node( _old ), ntk.is_complemented( _old ) ? !_new : _new ) );
for ( auto it = std::rbegin( substitutions ); it != std::rend( substitutions ); ++it )
{
if ( ntk.fanout_size( ntk.get_node( it->second ) ) == 0u )
{
ntk.take_out_node( ntk.get_node( it->second ) );
}
}
substitutions.clear();
return false;
fSuccess = false;
}

substitutions.emplace_back( std::make_pair( ntk.get_node( _old ), ntk.is_complemented( _old ) ? !_new : _new ) );
return true;
} );

if ( !fSuccess )
{
for ( auto it = std::rbegin( substitutions ); it != std::rend( substitutions ); ++it )
{
if ( ntk.fanout_size( ntk.get_node( it->second ) ) == 0u )
{
ntk.take_out_node( ntk.get_node( it->second ) );
}
}
substitutions.clear();
}

/* ensure that no dead nodes are reachable */
assert( count_reachable_dead_nodes( ntk ) == 0u );
substitute_nodes( substitutions );
Expand Down
8 changes: 4 additions & 4 deletions include/mockturtle/utils/window_utils.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -725,10 +725,10 @@ void levelized_expand_towards_tfo( Ntk const& ntk, std::vector<typename Ntk::nod

for ( uint32_t index = 0u; index < used.size(); ++index )
{
std::vector<node>& level = levels.at( used[index] );
for ( auto j = 0u; j < level.size(); ++j )
int current_index = used[index];
for ( auto j = 0u; j < levels[current_index].size(); ++j )
{
ntk.foreach_fanout( level[j], [&]( node const& fo, uint64_t index ) {
ntk.foreach_fanout( levels[current_index][j], [&]( node const& fo, uint64_t index ) {
/* avoid getting stuck on nodes with many fanouts */
if ( index == MAX_FANOUTS )
{
Expand Down Expand Up @@ -768,7 +768,7 @@ void levelized_expand_towards_tfo( Ntk const& ntk, std::vector<typename Ntk::nod
return true;
} );
}
level.clear();
levels[current_index].clear();
}
}

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