From 54214c8d8d50c76fa66e1411fbbbd17bf314bcb5 Mon Sep 17 00:00:00 2001
From: Oli Scherer <git-spam-no-reply9815368754983@oli-obk.de>
Date: Wed, 15 Mar 2023 16:25:28 +0000
Subject: Use a simpler atomic operation than the `compare_exchange` hammer

---
 compiler/rustc_data_structures/src/sync.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'compiler/rustc_data_structures/src')

diff --git a/compiler/rustc_data_structures/src/sync.rs b/compiler/rustc_data_structures/src/sync.rs
index 80a9ccd6daa..e8ee4fb76cc 100644
--- a/compiler/rustc_data_structures/src/sync.rs
+++ b/compiler/rustc_data_structures/src/sync.rs
@@ -107,6 +107,14 @@ cfg_if! {
             }
         }
 
+        impl Atomic<bool> {
+            pub fn fetch_or(&self, val: bool, _: Ordering) -> bool {
+                let result = self.0.get() | val;
+                self.0.set(val);
+                result
+            }
+        }
+
         impl<T: Copy + PartialEq> Atomic<T> {
             #[inline]
             pub fn compare_exchange(&self,
-- 
cgit 1.4.1-3-g733a5