040000 tree 60f722100fd4c67301120a3ad5dd7a610fb1d5ea	optimization
100644 blob 000f61074513787bc6b6e779b8960bf013ff9a4f	tree_ir_builder.dart
100644 blob ea4078273b7310f125c17b5e70d569c60b7d570e	tree_ir_integrity.dart
100644 blob a1fe55edbfcd0802678c4f289ee8aa65e07fe2f4	tree_ir_nodes.dart
100644 blob 486ee13a2d4cf7a9b701d646b25419abb287aeea	tree_ir_tracer.dart