Function rustc_codegen_ssa::debuginfo::type_names::compute_debuginfo_vtable_name

pub fn compute_debuginfo_vtable_name<'tcx>(
    tcx: TyCtxt<'tcx>, 
    t: Ty<'tcx>, 
    trait_ref: Option<PolyExistentialTraitRef<'tcx>>
) -> String

Computes a name for the global variable storing a vtable.

The name is of the form:

<path::to::SomeType as path::to::SomeTrait>::{vtable}

or, when generating C++-like names:

impl$<path::to::SomeType, path::to::SomeTrait>::vtable$