{"ast_node_type":"variable","tokens":[{"end":79,"kind":"keyword","start":0,"text":"let"}]}
        let (element_len1, _) = args[1].layout.ty.simd_size_and_type(bx.tcx());
        // Of the same length:
        let (element_len2, _) = args[2].layout.ty.simd_size_and_type(bx.tcx());