syntax_data: {"ast_node_type":"other","tokens":[{"end":95,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:             // a lot of care around intrinsics. For an issue to happen here, it would require a
context_before:             // unlikely. Also: all users of `simd_shuffle` are on unstable and already need to take
context_after:             // macro expanding to a `simd_shuffle` call without wrapping the constant argument in a