syntax_data: {"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":"Self::Sparc(r)"}]}
source_snippet:             Self::Sparc(r) => r.supported_types(arch),
context_before:             Self::S390x(r) => r.supported_types(arch, allow_experimental_reg),
context_after:             Self::SpirV(r) => r.supported_types(arch),