From c2779d52df50c3f8d454ab4acb80ad20b9b129d8 Mon Sep 17 00:00:00 2001
From: Denis Vieriu <dvieriu@apple.com>
Date: Sat, 14 Sep 2024 01:27:26 +0300
Subject: [PATCH] Fix API warning for older SDKs #2

---
 backends/apple/mps/runtime/operations/OperationUtils.mm | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/backends/apple/mps/runtime/operations/OperationUtils.mm b/backends/apple/mps/runtime/operations/OperationUtils.mm
index c3c5c93362a..2336868863d 100644
--- a/backends/apple/mps/runtime/operations/OperationUtils.mm
+++ b/backends/apple/mps/runtime/operations/OperationUtils.mm
@@ -31,8 +31,13 @@
       return MPSDataTypeFloat32;
     case DataType::mps_data_type_int8:
       return MPSDataTypeInt8;
-    case DataType::mps_data_type_int4:
-      return MPSDataTypeInt4;
+    case DataType::mps_data_type_int4: {
+      if (@available(macOS 15.0, iOS 18.0, tvOS 18.0, *)) {
+        return MPSDataTypeInt4;
+      } else {
+        return ((MPSDataType)(MPSDataTypeSignedBit | 4));
+      }
+    }
     case DataType::mps_data_type_int16:
       return MPSDataTypeInt16;
     case DataType::mps_data_type_int32: