From 09a55a7833dd2ac1ae4f99eb1928125d2c6a867a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Harald=20Sch=C3=A4fer?= <harald.the.engineer@gmail.com>
Date: Wed, 8 Apr 2026 16:16:39 -0700
Subject: [PATCH] autodetect tg backend: use CPU:LLVM on Linux (#37785)

autodetect tg backend: use CPU:LLVM on Linux, CPU on Darwin
---
 selfdrive/modeld/SConscript | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/selfdrive/modeld/SConscript b/selfdrive/modeld/SConscript
index f45dd4e7c..05045d098 100644
--- a/selfdrive/modeld/SConscript
+++ b/selfdrive/modeld/SConscript
@@ -26,7 +26,7 @@ elif 'QCOM' in available:
   tg_backend = 'QCOM'
   tg_flags = f'DEV={tg_backend} FLOAT16=1 NOLOCALS=1 JIT_BATCH_SIZE=0'
 else:
-  tg_backend = 'CPU'
+  tg_backend = 'CPU' if arch == 'Darwin' else 'CPU:LLVM'
   tg_flags = f'DEV={tg_backend} THREADS=0'
 
 def write_tg_compiled_flags(target, source, env):