Add some missing timers

src/librustc_ast_lowering/lib.rs

@@ -268,7 +268,7 @@ pub fn lower_crate<'a, 'hir>(
     // incr. comp. yet.
     dep_graph.assert_ignored();
 
-    let _prof_timer = sess.prof.generic_activity("hir_lowering");
+    let _prof_timer = sess.prof.verbose_generic_activity("hir_lowering");
 
     LoweringContext {
         crate_root: sess.parse_sess.injected_crate_name.try_get().copied(),

src/librustc_codegen_ssa/back/link.rs

@@ -53,6 +53,7 @@ pub fn link_binary<'a, B: ArchiveBuilder<'a>>(
     crate_name: &str,
     target_cpu: &str,
 ) {
+    let _timer = sess.timer("link_binary");
     let output_metadata = sess.opts.output_types.contains_key(&OutputType::Metadata);
     for &crate_type in sess.crate_types.borrow().iter() {
         // Ignore executable crates if we have -Z no-codegen, as they will error.
@@ -71,9 +72,11 @@ pub fn link_binary<'a, B: ArchiveBuilder<'a>>(
             );
         }
 
-        for obj in codegen_results.modules.iter().filter_map(|m| m.object.as_ref()) {
-            check_file_is_writeable(obj, sess);
-        }
+        sess.time("link_binary_check_files_are_writeable", || {
+            for obj in codegen_results.modules.iter().filter_map(|m| m.object.as_ref()) {
+                check_file_is_writeable(obj, sess);
+            }
+        });
 
         let tmpdir = TempFileBuilder::new()
             .prefix("rustc")
@@ -84,6 +87,7 @@ pub fn link_binary<'a, B: ArchiveBuilder<'a>>(
             let out_filename = out_filename(sess, crate_type, outputs, crate_name);
             match crate_type {
                 config::CrateType::Rlib => {
+                    let _timer = sess.timer("link_rlib");
                     link_rlib::<B>(
                         sess,
                         codegen_results,
@@ -118,29 +122,34 @@ pub fn link_binary<'a, B: ArchiveBuilder<'a>>(
     }
 
     // Remove the temporary object file and metadata if we aren't saving temps
-    if !sess.opts.cg.save_temps {
-        if sess.opts.output_types.should_codegen() && !preserve_objects_for_their_debuginfo(sess) {
-            for obj in codegen_results.modules.iter().filter_map(|m| m.object.as_ref()) {
-                remove(sess, obj);
+    sess.time("link_binary_remove_temps", || {
+        if !sess.opts.cg.save_temps {
+            if sess.opts.output_types.should_codegen()
+                && !preserve_objects_for_their_debuginfo(sess)
+            {
+                for obj in codegen_results.modules.iter().filter_map(|m| m.object.as_ref()) {
+                    remove(sess, obj);
+                }
             }
-        }
-        for obj in codegen_results.modules.iter().filter_map(|m| m.bytecode_compressed.as_ref()) {
-            remove(sess, obj);
-        }
-        if let Some(ref metadata_module) = codegen_results.metadata_module {
-            if let Some(ref obj) = metadata_module.object {
+            for obj in codegen_results.modules.iter().filter_map(|m| m.bytecode_compressed.as_ref())
+            {
                 remove(sess, obj);
             }
-        }
-        if let Some(ref allocator_module) = codegen_results.allocator_module {
-            if let Some(ref obj) = allocator_module.object {
-                remove(sess, obj);
+            if let Some(ref metadata_module) = codegen_results.metadata_module {
+                if let Some(ref obj) = metadata_module.object {
+                    remove(sess, obj);
+                }
             }
-            if let Some(ref bc) = allocator_module.bytecode_compressed {
-                remove(sess, bc);
+            if let Some(ref allocator_module) = codegen_results.allocator_module {
+                if let Some(ref obj) = allocator_module.object {
+                    remove(sess, obj);
+                }
+                if let Some(ref bc) = allocator_module.bytecode_compressed {
+                    remove(sess, bc);
+                }
             }
         }
-    }
+    });
 }
 
 // The third parameter is for env vars, used on windows to set up the

src/librustc_codegen_ssa/back/write.rs

@@ -479,6 +479,8 @@ fn copy_all_cgu_workproducts_to_incr_comp_cache_dir(
         return work_products;
     }
 
+    let _timer = sess.timer("incr_comp_copy_cgu_workproducts");
+
     for module in compiled_modules.modules.iter().filter(|m| m.kind == ModuleKind::Regular) {
         let mut files = vec![];
 
@@ -1714,8 +1716,11 @@ pub struct OngoingCodegen<B: ExtraBackendMethods> {
 
 impl<B: ExtraBackendMethods> OngoingCodegen<B> {
     pub fn join(self, sess: &Session) -> (CodegenResults, FxHashMap<WorkProductId, WorkProduct>) {
+        let _timer = sess.timer("finish_ongoing_codegen");
+
         self.shared_emitter_main.check(sess, true);
-        let compiled_modules = match self.future.join() {
+        let future = self.future;
+        let compiled_modules = sess.time("join_worker_thread", || match future.join() {
             Ok(Ok(compiled_modules)) => compiled_modules,
             Ok(Err(())) => {
                 sess.abort_if_errors();
@@ -1724,7 +1729,7 @@ impl<B: ExtraBackendMethods> OngoingCodegen<B> {
             Err(_) => {
                 bug!("panic during codegen/LLVM phase");
             }
-        };
+        });
 
         sess.cgu_reuse_tracker.check_expected_reuse(sess.diagnostic());
 

src/librustc_data_structures/profiling.rs

@@ -347,6 +347,12 @@ impl<'a> TimingGuard<'a> {
     pub fn none() -> TimingGuard<'a> {
         TimingGuard(None)
     }
+
+    #[inline(always)]
+    pub fn run<R>(self, f: impl FnOnce() -> R) -> R {
+        let _timer = self;
+        f()
+    }
 }
 
 #[must_use]

src/librustc_driver/lib.rs

@@ -389,6 +389,7 @@ pub fn run_compiler(
                 })?;
             } else {
                 // Drop AST after creating GlobalCtxt to free memory
+                let _timer = sess.prof.generic_activity("drop_ast");
                 mem::drop(queries.expansion()?.take());
             }
 
@@ -413,6 +414,7 @@ pub fn run_compiler(
         })?;
 
         if let Some(linker) = linker {
+            let _timer = sess.timer("link");
             linker.link()?
         }
 

src/librustc_incremental/persist/fs.rs

@@ -190,6 +190,8 @@ pub fn prepare_session_directory(
         return;
     }
 
+    let _timer = sess.timer("incr_comp_prepare_session_directory");
+
     debug!("prepare_session_directory");
 
     // {incr-comp-dir}/{crate-name-and-disambiguator}
@@ -306,6 +308,8 @@ pub fn finalize_session_directory(sess: &Session, svh: Svh) {
         return;
     }
 
+    let _timer = sess.timer("incr_comp_finalize_session_directory");
+
     let incr_comp_session_dir: PathBuf = sess.incr_comp_session_dir().clone();
 
     if sess.has_errors_or_delayed_span_bugs() {

src/librustc_incremental/persist/load.rs

@@ -102,6 +102,8 @@ pub fn load_dep_graph(sess: &Session) -> DepGraphFuture {
         return MaybeAsync::Sync(LoadResult::Ok { data: Default::default() });
     }
 
+    let _timer = sess.prof.generic_activity("incr_comp_prepare_load_dep_graph");
+
     // Calling `sess.incr_comp_session_dir()` will panic if `sess.opts.incremental.is_none()`.
     // Fortunately, we just checked that this isn't the case.
     let path = dep_graph_path_from(&sess.incr_comp_session_dir());

src/librustc_interface/interface.rs

@@ -177,11 +177,17 @@ pub fn run_compiler_in_existing_thread_pool<R>(
         override_queries: config.override_queries,
     };
 
-    let _sess_abort_error = OnDrop(|| {
-        compiler.sess.diagnostic().print_error_count(registry);
-    });
+    let r = {
+        let _sess_abort_error = OnDrop(|| {
+            compiler.sess.diagnostic().print_error_count(registry);
+        });
 
-    f(&compiler)
+        f(&compiler)
+    };
+
+    let prof = compiler.sess.prof.clone();
+    prof.generic_activity("drop_compiler").run(move || drop(compiler));
+    r
 }
 
 pub fn run_compiler<R: Send>(mut config: Config, f: impl FnOnce(&Compiler) -> R + Send) -> R {

src/librustc_interface/passes.rs

@@ -611,6 +611,8 @@ pub fn prepare_outputs(
     boxed_resolver: &Steal<Rc<RefCell<BoxedResolver>>>,
     crate_name: &str,
 ) -> Result<OutputFilenames> {
+    let _timer = sess.timer("prepare_outputs");
+
     // FIXME: rustdoc passes &[] instead of &krate.attrs here
     let outputs = util::build_output_filenames(
         &compiler.input,
@@ -734,20 +736,22 @@ pub fn create_global_ctxt<'tcx>(
         callback(sess, &mut local_providers, &mut extern_providers);
     }
 
-    let gcx = global_ctxt.init_locking(|| {
-        TyCtxt::create_global_ctxt(
-            sess,
-            lint_store,
-            local_providers,
-            extern_providers,
-            &all_arenas,
-            arena,
-            resolver_outputs,
-            hir_map,
-            query_result_on_disk_cache,
-            &crate_name,
-            &outputs,
-        )
+    let gcx = sess.time("setup_global_ctxt", || {
+        global_ctxt.init_locking(|| {
+            TyCtxt::create_global_ctxt(
+                sess,
+                lint_store,
+                local_providers,
+                extern_providers,
+                &all_arenas,
+                arena,
+                resolver_outputs,
+                hir_map,
+                query_result_on_disk_cache,
+                &crate_name,
+                &outputs,
+            )
+        })
     });
 
     // Do some initialization of the DepGraph that can only be done with the tcx available.

src/librustc_interface/queries.rs

@@ -176,6 +176,7 @@ impl<'tcx> Queries<'tcx> {
         self.expansion.compute(|| {
             let crate_name = self.crate_name()?.peek().clone();
             let (krate, lint_store) = self.register_plugins()?.take();
+            let _timer = self.session().timer("configure_and_expand");
             passes::configure_and_expand(
                 self.session().clone(),
                 lint_store.clone(),
@@ -256,6 +257,7 @@ impl<'tcx> Queries<'tcx> {
             let lint_store = self.expansion()?.peek().2.clone();
             let hir = self.lower_to_hir()?.peek();
             let (ref hir_forest, ref resolver_outputs) = &*hir;
+            let _timer = self.session().timer("create_global_ctxt");
             Ok(passes::create_global_ctxt(
                 self.compiler,
                 lint_store,
@@ -312,14 +314,19 @@ pub struct Linker {
 
 impl Linker {
     pub fn link(self) -> Result<()> {
-        self.codegen_backend
+        let r = self
+            .codegen_backend
             .join_codegen_and_link(
                 self.ongoing_codegen,
                 &self.sess,
                 &self.dep_graph,
                 &self.prepare_outputs,
             )
-            .map_err(|_| ErrorReported)
+            .map_err(|_| ErrorReported);
+        let prof = self.sess.prof.clone();
+        let dep_graph = self.dep_graph;
+        prof.generic_activity("drop_dep_graph").run(move || drop(dep_graph));
+        r
     }
 }
 
@@ -328,6 +335,7 @@ impl Compiler {
     where
         F: for<'tcx> FnOnce(&'tcx Queries<'tcx>) -> T,
     {
+        let mut _timer = None;
         let queries = Queries::new(&self);
         let ret = f(&queries);
 
@@ -337,6 +345,8 @@ impl Compiler {
             }
         }
 
+        _timer = Some(self.session().timer("free_global_ctxt"));
+
         ret
     }