syntax_data: {"ast_node_type":"other","tokens":[{"end":6,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     //
context_before:     // It was decided that SVE requires Neon: https://github.com/rust-lang/rust/pull/91608
context_after:     // LLVM doesn't enable Neon for SVE. ARM indicates that they're separate, but probably always