Use Symbol for inline asm register class names This takes care of one "FIXME": // FIXME: use direct symbol comparison for register class names Instead of using string literals, this uses Symbol for register class names. This is part of work I am doing to improve how Symbol interning works.
librustc_target
contains some very low-level details that are
specific to different compilation targets and so forth.
For more information about how rustc works, see the rustc dev guide.