fix

fix

Remove more refs and clones

fix

more

fix

The new implementation allows some `memcpy`s to be optimized away,
so the uninit value in ui/sanitize/memory.rs is constructed directly
onto the return place. Therefore the sanitizer now says that the
value is allocated by `main` rather than `random`.

<https://docs.rs/cranelift-codegen/0.74.0/cranelift_codegen/ir/types/struct.Type.html#method.int>