clang-12: error: no such file or directory: '/local/emsdk/upstream/lib/clang/12.0.0/share/cfi_blacklist.txt'

I was looking into using
> -fsanitize=cfi

Adding that gave 3 errors including 2 because it required
> -flto -fvisibility=default
too.

After adding those 2, I was left with just one error which is the focus here:
> clang-12: error: no such file or directory: '/local/emsdk/upstream/lib/clang/12.0.0/share/cfi_blacklist.txt'

Should there be a default cfi_blacklist.txt included for clang or is it omitted on purpose to force the user to consciously decide what should be in their version of the file?