pub fn table(arch: Arch) -> Option<&'static Table>Expand description
The rules a target lowers by, or None where no back end in this crate covers it.
The same question crate::pipeline::Machine::for_target answers about the rest of a machine,
and it is here as well because a caller that wants to write down what a run covered has a
target and no machine. An architecture gets an arm here when it gets a rule file, and until then
it has no rules to report coverage of rather than an empty set of them.