From aff5f47dcef8e4616101a525cee7ecfd41183e6b Mon Sep 17 00:00:00 2001
From: klensy <klensy@users.noreply.github.com>
Date: Fri, 12 Apr 2024 17:54:35 +0300
Subject: [PATCH 1/2] remove dead code

---
 compiler/rustc_middle/src/util/common.rs | 30 ------------------------
 1 file changed, 30 deletions(-)

diff --git a/compiler/rustc_middle/src/util/common.rs b/compiler/rustc_middle/src/util/common.rs
index dd3a36c7bf8..0699e0b6269 100644
--- a/compiler/rustc_middle/src/util/common.rs
+++ b/compiler/rustc_middle/src/util/common.rs
@@ -1,8 +1,3 @@
-use rustc_data_structures::sync::Lock;
-
-use std::fmt::Debug;
-use std::time::{Duration, Instant};
-
 #[cfg(test)]
 mod tests;
 
@@ -26,31 +21,6 @@ pub fn to_readable_str(mut val: usize) -> String {
     groups.join("_")
 }
 
-pub fn record_time<T, F>(accu: &Lock<Duration>, f: F) -> T
-where
-    F: FnOnce() -> T,
-{
-    let start = Instant::now();
-    let rv = f();
-    let duration = start.elapsed();
-    let mut accu = accu.lock();
-    *accu += duration;
-    rv
-}
-
-pub fn indent<R, F>(op: F) -> R
-where
-    R: Debug,
-    F: FnOnce() -> R,
-{
-    // Use in conjunction with the log post-processor like `src/etc/indenter`
-    // to make debug output more readable.
-    debug!(">>");
-    let r = op();
-    debug!("<< (Result = {:?})", r);
-    r
-}
-
 pub struct Indenter {
     _cannot_construct_outside_of_this_module: (),
 }

From 7085ff2f6023800ea34165d49df8ff4d2b6b4bc4 Mon Sep 17 00:00:00 2001
From: klensy <klensy@users.noreply.github.com>
Date: Fri, 12 Apr 2024 18:04:22 +0300
Subject: [PATCH 2/2] remove some ancient debug output, looks unused?

---
 compiler/rustc_hir_analysis/src/check/check.rs |  1 -
 compiler/rustc_hir_analysis/src/check/mod.rs   |  1 -
 compiler/rustc_hir_analysis/src/lib.rs         |  1 -
 compiler/rustc_middle/src/util/common.rs       | 15 ---------------
 4 files changed, 18 deletions(-)

diff --git a/compiler/rustc_hir_analysis/src/check/check.rs b/compiler/rustc_hir_analysis/src/check/check.rs
index 961b643fa25..216b89fd4f1 100644
--- a/compiler/rustc_hir_analysis/src/check/check.rs
+++ b/compiler/rustc_hir_analysis/src/check/check.rs
@@ -505,7 +505,6 @@ fn check_static_linkage(tcx: TyCtxt<'_>, def_id: LocalDefId) {
 }
 
 pub(crate) fn check_item_type(tcx: TyCtxt<'_>, def_id: LocalDefId) {
-    let _indenter = indenter();
     match tcx.def_kind(def_id) {
         DefKind::Static { .. } => {
             tcx.ensure().typeck(def_id);
diff --git a/compiler/rustc_hir_analysis/src/check/mod.rs b/compiler/rustc_hir_analysis/src/check/mod.rs
index 938c0a19e33..024a0433b8c 100644
--- a/compiler/rustc_hir_analysis/src/check/mod.rs
+++ b/compiler/rustc_hir_analysis/src/check/mod.rs
@@ -103,7 +103,6 @@ use rustc_trait_selection::traits::ObligationCtxt;
 
 use crate::errors;
 use crate::require_c_abi_if_c_variadic;
-use crate::util::common::indenter;
 
 use self::compare_impl_item::collect_return_position_impl_trait_in_trait_tys;
 use self::region::region_scope_tree;
diff --git a/compiler/rustc_hir_analysis/src/lib.rs b/compiler/rustc_hir_analysis/src/lib.rs
index 5a374fa5e04..c374f9762d6 100644
--- a/compiler/rustc_hir_analysis/src/lib.rs
+++ b/compiler/rustc_hir_analysis/src/lib.rs
@@ -103,7 +103,6 @@ use rustc_middle::middle;
 use rustc_middle::mir::interpret::GlobalId;
 use rustc_middle::query::Providers;
 use rustc_middle::ty::{self, Ty, TyCtxt};
-use rustc_middle::util;
 use rustc_session::parse::feature_err;
 use rustc_span::{symbol::sym, Span};
 use rustc_target::spec::abi::Abi;
diff --git a/compiler/rustc_middle/src/util/common.rs b/compiler/rustc_middle/src/util/common.rs
index 0699e0b6269..2038d3f8448 100644
--- a/compiler/rustc_middle/src/util/common.rs
+++ b/compiler/rustc_middle/src/util/common.rs
@@ -21,21 +21,6 @@ pub fn to_readable_str(mut val: usize) -> String {
     groups.join("_")
 }
 
-pub struct Indenter {
-    _cannot_construct_outside_of_this_module: (),
-}
-
-impl Drop for Indenter {
-    fn drop(&mut self) {
-        debug!("<<");
-    }
-}
-
-pub fn indenter() -> Indenter {
-    debug!(">>");
-    Indenter { _cannot_construct_outside_of_this_module: () }
-}
-
 // const wrapper for `if let Some((_, tail)) = name.rsplit_once(':') { tail } else { name }`
 pub const fn c_name(name: &'static str) -> &'static str {
     // FIXME Simplify the implementation once more `str` methods get const-stable.