From d19d15257e9c6176a5a314703e981452d003862a Mon Sep 17 00:00:00 2001
From: Yichen Yan <oraluben@outlook.com>
Date: Sat, 23 May 2026 18:47:21 +0800
Subject: [PATCH] [Metal] Enable Metal 4 shader compilation

Use the latest SDK language version when available so generated MPP tensor_ops shaders can compile on M5+ while preserving the existing fallback for older SDKs.
---
 src/runtime/metal/metal_module.mm | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/runtime/metal/metal_module.mm b/src/runtime/metal/metal_module.mm
index 782fc92235ba..d1212b3adf9f 100644
--- a/src/runtime/metal/metal_module.mm
+++ b/src/runtime/metal/metal_module.mm
@@ -124,7 +124,11 @@ int GetPropertyMask() const final {
 
     if (fmt_ == "metal") {
       MTLCompileOptions* opts = [MTLCompileOptions alloc];
+#if defined(__MAC_OS_X_VERSION_MAX_ALLOWED) && __MAC_OS_X_VERSION_MAX_ALLOWED >= 260000
+      opts.languageVersion = MTLLanguageVersion4_0;
+#else
       opts.languageVersion = MTLLanguageVersion2_3;
+#endif
       opts.fastMathEnabled = YES;
       // opts = nil;
       // Per-kernel payload is bytes; treat as UTF-8 MSL source.