syntax_data: {"ast_node_type":"other","tokens":[{"end":25,"kind":"keyword","start":0,"text":"(\"sse\","}]}
source_snippet:     ("sse", Stable, &[]),
context_before:     ("soft-float", Stability::Unstable(sym::x87_target_feature), &[]),
context_after:     ("sse2", Stable, &["sse"]),