STEP 0:
    modifications:
        U : l1.0_data_class.kt -> l1.kt
    added file: l1.kt
STEP 1:
    modifications:
        U : l1.1_simple_class.kt -> l1.kt
    modified ir: l1.kt
STEP 2:
    modifications:
        U : l1.2_inline_class.kt -> l1.kt
    modified ir: l1.kt
STEP 3:
    modifications:
        U : l1.1_simple_class.kt -> l1.kt
    modified ir: l1.kt
