GetCorElementTypeOfElementType

src/coreclr/System.Private.CoreLib/src/System/Array.CoreCLR.cs

@@ -707,13 +707,8 @@ public unsafe int GetLowerBound(int dimension)
             return Unsafe.Add(ref RuntimeHelpers.GetMultiDimensionalArrayBounds(this), rank + dimension);
         }
 
-        internal unsafe CorElementType GetCorElementTypeOfElementType()
-        {
-            MethodTable* pMT = RuntimeHelpers.GetMethodTable(this);
-            CorElementType et = pMT->GetArrayElementTypeHandle().GetVerifierCorElementType();
-            GC.KeepAlive(this);
-            return et;
-        }
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        internal extern CorElementType GetCorElementTypeOfElementType();
 
         private unsafe bool IsValueOfElementType(object value)
         {

src/coreclr/classlibnative/bcltype/arraynative.cpp

@@ -17,6 +17,17 @@
 
 #include "arraynative.inl"
 
+// Returns a bool to indicate if the array is of primitive types or not.
+FCIMPL1(INT32, ArrayNative::GetCorElementTypeOfElementType, ArrayBase* arrayUNSAFE)
+{
+    FCALL_CONTRACT;
+
+    _ASSERTE(arrayUNSAFE != NULL);
+
+    return arrayUNSAFE->GetArrayElementTypeHandle().GetVerifierCorElementType();
+}
+FCIMPLEND
+
 extern "C" PCODE QCALLTYPE Array_GetElementConstructorEntrypoint(QCall::TypeHandle pArrayTypeHnd)
 {
     QCALL_CONTRACT;

src/coreclr/classlibnative/bcltype/arraynative.h

@@ -25,6 +25,7 @@ struct FCALLRuntimeFieldHandle
 class ArrayNative
 {
 public:
+    static FCDECL1(INT32, GetCorElementTypeOfElementType, ArrayBase* arrayUNSAFE);
 
     static FCDECL2(FC_BOOL_RET, IsSimpleCopy, ArrayBase* pSrc, ArrayBase* pDst);
 };

src/coreclr/vm/ecalllist.h

@@ -360,6 +360,7 @@ FCFuncStart(gCastHelpers)
 FCFuncEnd()
 
 FCFuncStart(gArrayFuncs)
+    FCFuncElement("GetCorElementTypeOfElementType", ArrayNative::GetCorElementTypeOfElementType)
     FCFuncElement("IsSimpleCopy", ArrayNative::IsSimpleCopy)
 FCFuncEnd()
 
@@ -535,6 +536,7 @@ FCFuncEnd()
 // Note these have to remain sorted by name:namespace pair (Assert will wack you if you don't)
 // The sorting is case-sensitive
 
+FCClassElement("Array", "System", gArrayFuncs)
 FCClassElement("AssemblyLoadContext", "System.Runtime.Loader", gAssemblyLoadContextFuncs)
 FCClassElement("Buffer", "System", gBufferFuncs)
 FCClassElement("CastHelpers", "System.Runtime.CompilerServices", gCastHelpers)