040000 tree b3f4c7dbff60973d447e5ba9548aa44a178d19a5	optimization
100644 blob 921e83076c7d3f78f44510685380dfb70e49cc8b	tree_ir_builder.dart
100644 blob 5afd2da9d73baaec13081fe6f81a3f870cbfc49c	tree_ir_integrity.dart
100644 blob c23efd500fc60735aa3e8d75a03276333f73ced3	tree_ir_nodes.dart
100644 blob f07a03005ffdc30b24750bc064f0190201e66c81	tree_ir_tracer.dart