040000 tree 6e4ffd19e54be74bf27f7c75d9c4ed8c4b170c36	optimization
100644 blob a9c283184802fcba3a8755457a2472b3dd16263e	tree_ir_builder.dart
100644 blob 691a330745d7f7fd4db04acf70600c7bca72e262	tree_ir_integrity.dart
100644 blob ec2e34abdace63b8ca0a1f4400d973df757efa13	tree_ir_nodes.dart
100644 blob 01aed83b86917ad02dd813cedbf99f85cde70a60	tree_ir_tracer.dart