remove GPU dependencies in test_autotune_add.py

Author: mark14wu

tests/test_autotune_add.py

@@ -9,6 +9,17 @@
 
 cfg.sanitizer_backend = "symexec"
 
+# skip benchmarking in CPU-only environments,
+# as do_bench relies on GPUs
+if not torch.backends.cuda.is_built():
+    import triton.testing
+    triton.testing.do_bench = lambda *_, **__: [0.0, 0.0, 0.0]
+    from triton.runtime import autotuner
+    orig_init = autotuner.Autotuner.__init__
+    def patched_init(self, *args, **kwargs):
+        orig_init(self, *args, **kwargs)
+        self.do_bench = lambda *_, **__: [0.0, 0.0, 0.0]
+    autotuner.Autotuner.__init__ = patched_init
 
 @triton.autotune(
     configs=[