Add inline directives.

Author: cjgillot

compiler/rustc_middle/src/ty/query/mod.rs

@@ -307,18 +307,21 @@ mod sealed {
 use sealed::IntoQueryParam;
 
 impl TyCtxt<'tcx> {
+    #[inline]
     pub fn def_kind(self, def_id: impl IntoQueryParam<DefId>) -> DefKind {
         let def_id = def_id.into_query_param();
         self.opt_def_kind(def_id)
             .unwrap_or_else(|| bug!("def_kind: unsupported node: {:?}", def_id))
     }
 
+    #[inline]
     pub fn fn_sig(self, def_id: impl IntoQueryParam<DefId>) -> ty::PolyFnSig<'tcx> {
         let def_id = def_id.into_query_param();
         self.try_fn_sig(def_id)
             .unwrap_or_else(|s| span_bug!(self.def_span(def_id), "fn_sig: {}", s))
     }
 
+    #[inline]
     pub fn type_of(self, def_id: impl IntoQueryParam<DefId>) -> Ty<'tcx> {
         let def_id = def_id.into_query_param();
         self.try_type_of(def_id).unwrap_or_else(|msg| {
@@ -329,18 +332,21 @@ impl TyCtxt<'tcx> {
 }
 
 impl TyCtxtAt<'tcx> {
+    #[inline]
     pub fn def_kind(self, def_id: impl IntoQueryParam<DefId>) -> DefKind {
         let def_id = def_id.into_query_param();
         self.opt_def_kind(def_id)
             .unwrap_or_else(|| bug!("def_kind: unsupported node: {:?}", def_id))
     }
 
+    #[inline]
     pub fn fn_sig(self, def_id: impl IntoQueryParam<DefId>) -> ty::PolyFnSig<'tcx> {
         let def_id = def_id.into_query_param();
         self.try_fn_sig(def_id)
             .unwrap_or_else(|s| span_bug!(self.def_span(def_id), "fn_sig: {}", s))
     }
 
+    #[inline]
     pub fn type_of(self, def_id: impl IntoQueryParam<DefId>) -> Ty<'tcx> {
         let def_id = def_id.into_query_param();
         self.try_type_of(def_id).unwrap_or_else(|msg| {