How to make swift's symbol table not garbled？like Objective-c？

I imported the symbol table file.txt of swift project, Why is it not as intuitive as Objective-C?

# Symbols:
# Address   Size        File  Name
0x1000017E0 0x00000090  [  2] ___sanitizer_cov_trace_pc_guard_init
0x100001870 0x00000070  [  2] ___sanitizer_cov_trace_pc_guard
0x1000018E0 0x00000090  [  2] _printC
0x100001970 0x0000001C  [  2] _sancov.module_ctor_trace_pc_guard
0x100001990 0x00000080  [  3] +[TestOCViewController load]
0x100001A10 0x00000060  [  3] -[TestOCViewController viewDidLoad]
0x100001A70 0x00000060  [  3] -[TestOCViewController viewWillLayoutSubviews]
0x100001AD0 0x0000001C  [  3] _sancov.module_ctor_trace_pc_guard
0x100001AF0 0x00000290  [  4] _$s11KASOpenGLES14ViewControllerC4loadyyF