[mono] Trying to fix performance regression. (#94358)

* Trying to fix performance regression.

* Fix performance issue

Author: thaystg

src/mono/mono/mini/interp/transform.c

@@ -2306,7 +2306,16 @@ interp_handle_intrinsics (TransformData *td, MonoMethod *target_method, MonoClas
 			*op = MINT_INITBLK;
 		}
 	} else if (in_corlib && !strcmp (klass_name_space, "System.Runtime.CompilerServices") && !strcmp (klass_name, "RuntimeHelpers")) {
-		if (!strcmp (tm, "GetHashCode") || !strcmp (tm, "InternalGetHashCode")) {
+		if (!strcmp (tm, "get_OffsetToStringData")) {
+			g_assert (csignature->param_count == 0);
+			int offset = MONO_STRUCT_OFFSET (MonoString, chars);
+			interp_add_ins (td, MINT_LDC_I4);
+			WRITE32_INS (td->last_ins, 0, &offset);
+			push_simple_type (td, STACK_TYPE_I4);
+			interp_ins_set_dreg (td->last_ins, td->sp [-1].local);
+			td->ip += 5;
+			return TRUE;
+		} else if (!strcmp (tm, "GetHashCode") || !strcmp (tm, "InternalGetHashCode")) {
 			*op = MINT_INTRINS_GET_HASHCODE;
 		} else if (!strcmp (tm, "TryGetHashCode")) {
 			*op = MINT_INTRINS_TRY_GET_HASHCODE;