From a69b183c4b34b7b22d51837c1ed132365f007503 Mon Sep 17 00:00:00 2001
From: Stephen Toub <stoub@microsoft.com>
Date: Sat, 23 May 2015 04:56:33 -0400
Subject: [PATCH] Make ConcurrentDictionary calls to TryUpdate use
 TryUpdateInternal

Avoids recomputing the key's hashcode.
---
 .../src/System/Collections/Concurrent/ConcurrentDictionary.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/System.Collections.Concurrent/src/System/Collections/Concurrent/ConcurrentDictionary.cs b/src/System.Collections.Concurrent/src/System/Collections/Concurrent/ConcurrentDictionary.cs
index 212d5f44196c..a600daf14512 100644
--- a/src/System.Collections.Concurrent/src/System/Collections/Concurrent/ConcurrentDictionary.cs
+++ b/src/System.Collections.Concurrent/src/System/Collections/Concurrent/ConcurrentDictionary.cs
@@ -1033,7 +1033,7 @@ public TValue AddOrUpdate(TKey key, Func<TKey, TValue> addValueFactory, Func<TKe
                 //key exists, try to update
                 {
                     TValue newValue = updateValueFactory(key, oldValue);
-                    if (TryUpdate(key, newValue, oldValue))
+                    if (TryUpdateInternal(key, hashcode, newValue, oldValue))
                     {
                         return newValue;
                     }
@@ -1080,7 +1080,7 @@ public TValue AddOrUpdate(TKey key, TValue addValue, Func<TKey, TValue, TValue>
                 //key exists, try to update
                 {
                     TValue newValue = updateValueFactory(key, oldValue);
-                    if (TryUpdate(key, newValue, oldValue))
+                    if (TryUpdateInternal(key, hashcode, newValue, oldValue))
                     {
                         return newValue;
                     }