Function rustc_mir_transform::sroa::escaping_locals

fn escaping_locals(body: &Body<'_>) -> BitSet<Local>

Identify all locals that are not eligible for SROA.

There are 3 cases:

• the aggegated local is used or passed to other code (function parameters and arguments);
• the locals is a union or an enum;
• the local’s address is taken, and thus the relative addresses of the fields are observable to client code.