syntax_data: {"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // `simd_size_and_type` post-monomorphization. It will probably start to ICE
context_before:         // The way we evaluate the `N` in `[T; N]` here only works since we use
context_after:         // if we use it in generic code. See the `simd-array-trait` ui test.