[libcxx-commits] [libcxx] [libc++] Remove a bunch of unused includes from <atomic> detail headers (PR #178161)

[Nikolas Klauser via libcxx-commits]

https://github.com/philnik777 created https://github.com/llvm/llvm-project/pull/178161

None

>From aaf8386a77acf1c70280f49c70ac7c5d8cf5515a Mon Sep 17 00:00:00 2001
From: Nikolas Klauser <nikolasklauser at berlin.de>
Date: Tue, 27 Jan 2026 12:03:58 +0100
Subject: [PATCH] [libc++] Remove a bunch of unused includes from <atomic>
 detail headers

---
 libcxx/include/__atomic/atomic.h                 | 2 --
 libcxx/include/__atomic/atomic_flag.h            | 4 ----
 libcxx/include/__atomic/atomic_sync.h            | 6 ------
 libcxx/include/__atomic/atomic_sync_timed.h      | 8 --------
 libcxx/include/__atomic/atomic_waitable_traits.h | 2 --
 5 files changed, 22 deletions(-)

diff --git a/libcxx/include/__atomic/atomic.h b/libcxx/include/__atomic/atomic.h
index 02528cd964a58..ea1d28fbf850a 100644
--- a/libcxx/include/__atomic/atomic.h
+++ b/libcxx/include/__atomic/atomic.h
@@ -26,9 +26,7 @@
 #include <__type_traits/is_nothrow_constructible.h>
 #include <__type_traits/is_same.h>
 #include <__type_traits/is_trivially_copyable.h>
-#include <__type_traits/remove_const.h>
 #include <__type_traits/remove_pointer.h>
-#include <__type_traits/remove_volatile.h>
 #include <__utility/forward.h>
 #include <cstring>
 
diff --git a/libcxx/include/__atomic/atomic_flag.h b/libcxx/include/__atomic/atomic_flag.h
index 42864c869d22f..7c09870867b70 100644
--- a/libcxx/include/__atomic/atomic_flag.h
+++ b/libcxx/include/__atomic/atomic_flag.h
@@ -11,14 +11,10 @@
 
 #include <__atomic/atomic_sync.h>
 #include <__atomic/atomic_waitable_traits.h>
-#include <__atomic/contention_t.h>
 #include <__atomic/memory_order.h>
 #include <__atomic/support.h>
-#include <__chrono/duration.h>
 #include <__config>
 #include <__memory/addressof.h>
-#include <__thread/support.h>
-#include <cstdint>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #  pragma GCC system_header
diff --git a/libcxx/include/__atomic/atomic_sync.h b/libcxx/include/__atomic/atomic_sync.h
index 1234cdea504a2..12bd1b96a0269 100644
--- a/libcxx/include/__atomic/atomic_sync.h
+++ b/libcxx/include/__atomic/atomic_sync.h
@@ -12,17 +12,11 @@
 #include <__atomic/atomic_waitable_traits.h>
 #include <__atomic/contention_t.h>
 #include <__atomic/memory_order.h>
-#include <__atomic/to_gcc_order.h>
 #include <__chrono/duration.h>
 #include <__config>
 #include <__memory/addressof.h>
 #include <__thread/poll_with_backoff.h>
-#include <__type_traits/conjunction.h>
 #include <__type_traits/decay.h>
-#include <__type_traits/invoke.h>
-#include <__type_traits/is_same.h>
-#include <__type_traits/void_t.h>
-#include <__utility/declval.h>
 #include <cstring>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
diff --git a/libcxx/include/__atomic/atomic_sync_timed.h b/libcxx/include/__atomic/atomic_sync_timed.h
index 7daff73db7ebd..f3bf780b0e364 100644
--- a/libcxx/include/__atomic/atomic_sync_timed.h
+++ b/libcxx/include/__atomic/atomic_sync_timed.h
@@ -12,20 +12,12 @@
 #include <__atomic/atomic_waitable_traits.h>
 #include <__atomic/contention_t.h>
 #include <__atomic/memory_order.h>
-#include <__atomic/to_gcc_order.h>
 #include <__chrono/duration.h>
 #include <__config>
 #include <__memory/addressof.h>
 #include <__thread/poll_with_backoff.h>
 #include <__thread/timed_backoff_policy.h>
-#include <__type_traits/conjunction.h>
 #include <__type_traits/decay.h>
-#include <__type_traits/has_unique_object_representation.h>
-#include <__type_traits/invoke.h>
-#include <__type_traits/is_same.h>
-#include <__type_traits/is_trivially_copyable.h>
-#include <__type_traits/void_t.h>
-#include <__utility/declval.h>
 #include <cstdint>
 #include <cstring>
 
diff --git a/libcxx/include/__atomic/atomic_waitable_traits.h b/libcxx/include/__atomic/atomic_waitable_traits.h
index de06fe70b3e1a..72ae4b76294d9 100644
--- a/libcxx/include/__atomic/atomic_waitable_traits.h
+++ b/libcxx/include/__atomic/atomic_waitable_traits.h
@@ -16,8 +16,6 @@
 #include <__type_traits/has_unique_object_representation.h>
 #include <__type_traits/is_same.h>
 #include <__type_traits/is_trivially_copyable.h>
-#include <__type_traits/void_t.h>
-#include <__utility/declval.h>
 #include <cstring>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)