From cc8af6d2c40af72b1d2e689f994eb5dfdc9e2940 Mon Sep 17 00:00:00 2001
From: David Fowler <davidfowl@gmail.com>
Date: Sun, 28 Apr 2019 19:02:01 -0700
Subject: [PATCH] Low hanging allocation fruit (#9796)

- We were allocating a Task<int> for every read, return a ValueTask<int> for the cases where reads complete synchronously.
---
 src/Servers/IIS/IIS/src/Core/IISHttpContext.IO.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Servers/IIS/IIS/src/Core/IISHttpContext.IO.cs b/src/Servers/IIS/IIS/src/Core/IISHttpContext.IO.cs
index 9b6fecd000..feea13e2e2 100644
--- a/src/Servers/IIS/IIS/src/Core/IISHttpContext.IO.cs
+++ b/src/Servers/IIS/IIS/src/Core/IISHttpContext.IO.cs
@@ -20,7 +20,7 @@ namespace Microsoft.AspNetCore.Server.IIS.Core
         /// <param name="memory"></param>
         /// <param name="cancellationToken"></param>
         /// <returns></returns>
-        internal async Task<int> ReadAsync(Memory<byte> memory, CancellationToken cancellationToken)
+        internal async ValueTask<int> ReadAsync(Memory<byte> memory, CancellationToken cancellationToken)
         {
             if (!_hasRequestReadingStarted)
             {
@@ -155,7 +155,7 @@ namespace Microsoft.AspNetCore.Server.IIS.Core
                             break;
                         }
 
-                        flush = flush | result.IsCanceled;
+                        flush |= result.IsCanceled;
 
                         if (flush)
                         {