Convert Array.CopySlow to managed (#97202)

* Body of CopySlow and setup QCall for CanAssignArrayType * UnBoxEachElement * BoxEachElement * CastCheckEachElement * Move Unbox_Nullable to RuntimeHelpers --------- Co-authored-by: Aaron Robinson <arobins@microsoft.com>
dotnet · Jan 26, 2024 · ca703a1 · ca703a1
1 parent 16cb414
commit ca703a1
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Showing 9 changed files with 337 additions and 521 deletions.
diff --git a/src/coreclr/System.Private.CoreLib/src/System/Array.CoreCLR.cs b/src/coreclr/System.Private.CoreLib/src/System/Array.CoreCLR.cs
diff --git a/src/coreclr/System.Private.CoreLib/src/System/Runtime/CompilerServices/CastHelpers.cs b/src/coreclr/System.Private.CoreLib/src/System/Runtime/CompilerServices/CastHelpers.cs
@@ -209,7 +209,7 @@ internal static unsafe class CastHelpers
         [DebuggerHidden]
         [StackTraceHidden]
         [DebuggerStepThrough]
-        private static object? ChkCastAny(void* toTypeHnd, object? obj)
+        internal static object? ChkCastAny(void* toTypeHnd, object? obj)
         {
             CastResult result;
 

diff --git a/...eclr/System.Private.CoreLib/src/System/Runtime/CompilerServices/RuntimeHelpers.CoreCLR.cs b/...eclr/System.Private.CoreLib/src/System/Runtime/CompilerServices/RuntimeHelpers.CoreCLR.cs
@@ -301,6 +301,9 @@ internal static unsafe bool ObjectHasComponentSize(object obj)
         [MethodImpl(MethodImplOptions.InternalCall)]
         internal static extern unsafe object? Box(MethodTable* methodTable, ref byte data);
 
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal static extern unsafe void Unbox_Nullable(ref byte destination, MethodTable* toTypeHnd, object? obj);
+
         // Given an object reference, returns its MethodTable*.
         //
         // WARNING: The caller has to ensure that MethodTable* does not get unloaded. The most robust way