From 0ccb60096ac8d166c740ff1180ba33b5f7421c8f Mon Sep 17 00:00:00 2001
From: Nicholas Nethercote <n.nethercote@gmail.com>
Date: Thu, 30 Mar 2023 13:00:28 +1100
Subject: Remove `RwLock::clone_guard`.

It's unused.
---
 compiler/rustc_data_structures/src/sync.rs | 12 ------------
 1 file changed, 12 deletions(-)

(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 09765607cbd..4e2126fff7b 100644
--- a/compiler/rustc_data_structures/src/sync.rs
+++ b/compiler/rustc_data_structures/src/sync.rs
@@ -578,18 +578,6 @@ impl<T> RwLock<T> {
         self.write()
     }
 
-    #[cfg(not(parallel_compiler))]
-    #[inline(always)]
-    pub fn clone_guard<'a>(rg: &ReadGuard<'a, T>) -> ReadGuard<'a, T> {
-        ReadGuard::clone(rg)
-    }
-
-    #[cfg(parallel_compiler)]
-    #[inline(always)]
-    pub fn clone_guard<'a>(rg: &ReadGuard<'a, T>) -> ReadGuard<'a, T> {
-        ReadGuard::rwlock(&rg).read()
-    }
-
     #[cfg(not(parallel_compiler))]
     #[inline(always)]
     pub fn leak(&self) -> &T {
-- 
cgit 1.4.1-3-g733a5