040000 tree ac37072e35f56faf643e8196630781ab2c3a59ca	optimization
100644 blob 8adf3a9171e3a46432e915c49a531b6d1b8fd60c	tree_ir_builder.dart
100644 blob 3a1a0bc1ce9affb41e355b9f1a31795556997170	tree_ir_integrity.dart
100644 blob ddaf34ddef5ba9362866db110393ff39be81d8fe	tree_ir_nodes.dart
100644 blob 01b5847cdb3073f8153280f6368fee513bed1c72	tree_ir_tracer.dart