syntax_data: {"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:             // Note: `core-avx2` is slightly more advanced than `x86_64h`, see
context_before:             X86_64 => "penryn",
context_after:             // comments (and disabled features) in `x86_64h_apple_darwin` for