From 06b5ea5c35881f38c12663c3631e00e4553b7aa8 Mon Sep 17 00:00:00 2001
From: Phil Garcia <phil@thinkedge.com>
Date: Tue, 26 Jun 2018 22:03:49 -0700
Subject: [PATCH] Applying PR feedback

Commit migrated from https://github.com/dotnet/coreclr/commit/d1d26ac8fd6aabbfe655de03bf0ee3ecb2d096cd
---
 .../src/Internal/Runtime/CompilerServices/Unsafe.cs           | 11 +++++++++++
 src/libraries/System.Private.CoreLib/src/System/Double.cs     |  2 +-
 src/libraries/System.Private.CoreLib/src/System/Single.cs     |  2 +-
 3 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/libraries/System.Private.CoreLib/src/Internal/Runtime/CompilerServices/Unsafe.cs b/src/libraries/System.Private.CoreLib/src/Internal/Runtime/CompilerServices/Unsafe.cs
index aeff3ce..03d3f85 100644
--- a/src/libraries/System.Private.CoreLib/src/Internal/Runtime/CompilerServices/Unsafe.cs
+++ b/src/libraries/System.Private.CoreLib/src/Internal/Runtime/CompilerServices/Unsafe.cs
@@ -358,6 +358,17 @@ namespace Internal.Runtime.CompilerServices
         }
 
         /// <summary>
+        /// Reinterprets the given location as a reference to a value of type <typeparamref name="T"/>.
+        /// </summary>
+        [Intrinsic]
+        [NonVersionable]
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static ref T AsRef<T>(in T source)
+        {
+            throw new PlatformNotSupportedException();
+        }
+
+        /// <summary>
         /// Determines the byte offset from origin to target from the given references.
         /// </summary>
         [Intrinsic]
diff --git a/src/libraries/System.Private.CoreLib/src/System/Double.cs b/src/libraries/System.Private.CoreLib/src/System/Double.cs
index 308dda5..69da2e3 100644
--- a/src/libraries/System.Private.CoreLib/src/System/Double.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/Double.cs
@@ -226,7 +226,7 @@ namespace System
         [MethodImpl(MethodImplOptions.AggressiveInlining)] // 64-bit constants make the IL unusually large that makes the inliner to reject the method
         public override int GetHashCode()
         {
-            var bits = BitConverter.DoubleToInt64Bits(m_value);
+            var bits = Unsafe.As<double, long>(ref Unsafe.AsRef(in m_value));
 
             // Optimized check for IsNan() || IsZero()
             if (((bits - 1) & 0x7FFFFFFFFFFFFFFF) >= 0x7FF0000000000000)
diff --git a/src/libraries/System.Private.CoreLib/src/System/Single.cs b/src/libraries/System.Private.CoreLib/src/System/Single.cs
index d62ff9c..7dddb02 100644
--- a/src/libraries/System.Private.CoreLib/src/System/Single.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/Single.cs
@@ -217,7 +217,7 @@ namespace System
 
         public override int GetHashCode()
         {
-            var bits = BitConverter.SingleToInt32Bits(m_value);
+            var bits = Unsafe.As<float, int>(ref Unsafe.AsRef(in m_value));
 
             // Optimized check for IsNan() || IsZero()
             if (((bits - 1) & 0x7FFFFFFF) >= 0x7F800000)
-- 
2.7.4