Make check_match and check_liveness take a LocalDefId

compiler/rustc_interface/src/passes.rs

@@ -775,7 +775,7 @@ fn analysis(tcx: TyCtxt<'_>, (): ()) -> Result<()> {
                         // "not all control paths return a value" is reported here.
                         //
                         // maybe move the check to a MIR pass?
-                        tcx.ensure().check_liveness(def_id.to_def_id());
+                        tcx.ensure().check_liveness(def_id);
                     });
                 });
             }

compiler/rustc_middle/src/query/mod.rs

@@ -832,7 +832,7 @@ rustc_queries! {
         desc { |tcx| "checking privacy in {}", describe_as_module(key, tcx) }
     }
 
-    query check_liveness(key: DefId) {
+    query check_liveness(key: LocalDefId) {
         desc { |tcx| "checking liveness of variables in `{}`", tcx.def_path_str(key) }
     }
 
@@ -1021,7 +1021,7 @@ rustc_queries! {
     }
 
     query check_match(key: LocalDefId) {
-        desc { |tcx| "match-checking `{}`", tcx.def_path_str(key.to_def_id()) }
+        desc { |tcx| "match-checking `{}`", tcx.def_path_str(key) }
         cache_on_disk_if { true }
     }
 

compiler/rustc_passes/src/liveness.rs

@@ -90,7 +90,7 @@ use rustc_errors::Applicability;
 use rustc_errors::Diagnostic;
 use rustc_hir as hir;
 use rustc_hir::def::*;
-use rustc_hir::def_id::{DefId, LocalDefId};
+use rustc_hir::def_id::LocalDefId;
 use rustc_hir::intravisit::{self, Visitor};
 use rustc_hir::{Expr, HirId, HirIdMap, HirIdSet};
 use rustc_index::vec::IndexVec;
@@ -137,27 +137,22 @@ fn live_node_kind_to_string(lnk: LiveNodeKind, tcx: TyCtxt<'_>) -> String {
     }
 }
 
-fn check_liveness(tcx: TyCtxt<'_>, def_id: DefId) {
-    let local_def_id = match def_id.as_local() {
-        None => return,
-        Some(def_id) => def_id,
-    };
-
+fn check_liveness(tcx: TyCtxt<'_>, def_id: LocalDefId) {
     // Don't run unused pass for #[derive()]
-    let parent = tcx.local_parent(local_def_id);
+    let parent = tcx.local_parent(def_id);
     if let DefKind::Impl { .. } = tcx.def_kind(parent)
         && tcx.has_attr(parent, sym::automatically_derived)
     {
         return;
     }
 
     // Don't run unused pass for #[naked]
-    if tcx.has_attr(def_id, sym::naked) {
+    if tcx.has_attr(def_id.to_def_id(), sym::naked) {
         return;
     }
 
     let mut maps = IrMaps::new(tcx);
-    let body_id = tcx.hir().body_owned_by(local_def_id);
+    let body_id = tcx.hir().body_owned_by(def_id);
     let hir_id = tcx.hir().body_owner(body_id);
     let body = tcx.hir().body(body_id);
 
@@ -173,7 +168,7 @@ fn check_liveness(tcx: TyCtxt<'_>, def_id: DefId) {
     maps.visit_body(body);
 
     // compute liveness
-    let mut lsets = Liveness::new(&mut maps, local_def_id);
+    let mut lsets = Liveness::new(&mut maps, def_id);
     let entry_ln = lsets.compute(&body, hir_id);
     lsets.log_liveness(entry_ln, body_id.hir_id);