From bf8f6c399b886480a2f2710531cf76de46b1c0cd Mon Sep 17 00:00:00 2001
From: Mazdak Farrokhzad <twingoow@gmail.com>
Date: Wed, 19 Jun 2019 04:56:58 +0200
Subject: [PATCH] Rc: reduce duplicate calls.

---
 src/liballoc/rc.rs | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/liballoc/rc.rs b/src/liballoc/rc.rs
index 252b1c5a6dc7..970b4745c31c 100644
--- a/src/liballoc/rc.rs
+++ b/src/liballoc/rc.rs
@@ -1674,14 +1674,16 @@ trait RcBoxPtr<T: ?Sized> {
 
     #[inline]
     fn inc_strong(&self) {
+        let strong = self.strong();
+
         // We want to abort on overflow instead of dropping the value.
         // The reference count will never be zero when this is called;
         // nevertheless, we insert an abort here to hint LLVM at
         // an otherwise missed optimization.
-        if self.strong() == 0 || self.strong() == usize::max_value() {
+        if strong == 0 || strong == usize::max_value() {
             unsafe { abort(); }
         }
-        self.inner().strong.set(self.strong() + 1);
+        self.inner().strong.set(strong + 1);
     }
 
     #[inline]
@@ -1696,14 +1698,16 @@ trait RcBoxPtr<T: ?Sized> {
 
     #[inline]
     fn inc_weak(&self) {
+        let weak = self.weak();
+
         // We want to abort on overflow instead of dropping the value.
         // The reference count will never be zero when this is called;
         // nevertheless, we insert an abort here to hint LLVM at
         // an otherwise missed optimization.
-        if self.weak() == 0 || self.weak() == usize::max_value() {
+        if weak == 0 || weak == usize::max_value() {
             unsafe { abort(); }
         }
-        self.inner().weak.set(self.weak() + 1);
+        self.inner().weak.set(weak + 1);
     }
 
     #[inline]