Module unused 

Re-exports

use rustc_codegen_ssa::traits::BaseTypeCodegenMethods; 🔒

use rustc_codegen_ssa::traits::ConstCodegenMethods; 🔒

use rustc_data_structures::fx::FxHashSet; 🔒

use rustc_hir::def_id::DefId; 🔒

use rustc_hir::def_id::LocalDefId; 🔒

use rustc_middle::mir; 🔒

use rustc_middle::mono::MonoItem; 🔒

use rustc_middle::mono::MonoItemPartitions; 🔒

use rustc_middle::ty; 🔒

use rustc_middle::ty::TyCtxt; 🔒

use rustc_span::def_id::DefIdSet; 🔒

use crate::common::CodegenCx; 🔒

use crate::coverageinfo::mapgen::covfun::CovfunRecord; 🔒

use crate::coverageinfo::mapgen::covfun::prepare_covfun_record; 🔒

use crate::llvm; 🔒

Structs

UnusedInstance 🔒

Holds a dummy function instance along with its symbol name, to avoid having to repeatedly query for the name.

UsageSets 🔒

Functions

gather_unused_function_instances 🔒

make_dummy_instance 🔒

prepare_covfun_records_for_unused_functions 🔒

Each CGU will normally only emit coverage metadata for the functions that it actually generates. But since we don’t want unused functions to disappear from coverage reports, we also scan for functions that were instrumented but are not participating in codegen.

prepare_usage_sets 🔒

Prepare sets of definitions that are relevant to deciding whether something is an “unused function” for coverage purposes.