I read about the internals of GCC from GCC online documentation about the source tree, and found some source directories are missing from the documentation. For example in the top directory:
libbacktrace libcc1 libcilkrts libhsail-rt libmpx liboffloadmic libsantizer libvtv and in the gcc directory: jit Though these thing can be tracked by reading commit messages or change log, but I think it would be nice to have some short introduction for these directories for newbies like me.
