syntax_data: {"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:             // `readonly` and `noalias`, as LLVM's definition of `noalias` is based solely on memory
context_before:             // `&T` where `T` contains no `UnsafeCell<U>` is immutable, and can be marked as both
context_after:             // dependencies rather than pointer equality. However this only applies to arguments,