add fuse and tc opt bug repro (#11695)

* FINALLY HAVE A SMALL REPRO OH BOY

* show failure in CI

* cleaner?

* 1 possible fix

* Revert "1 possible fix"

This reverts commit 9e0fd215dd.

test/test_softmax_fusion.py

@@ -117,6 +117,15 @@ class TestFuse(unittest.TestCase):
     c = (a.sum(axis=1) + b.sum(axis=1)).fuse()
     self.assertListEqual(c.tolist(), [30]*16)
 
+  @unittest.skipUnless(Device.DEFAULT == "METAL", "METAL TC")
+  @unittest.expectedFailure # TODO: fix
+  def test_fuse_and_tc_opt(self):
+    A = Tensor.randn(8, 8).realize()
+    B = Tensor.randn(8, 8).realize()
+    C = Tensor.ones(1, 8, 8).pad(((1,1), None, None),).sum(0)
+    out = (C + (A @ B)).fuse()
+    out.realize()
+
 class TestSoftmaxFusion(unittest.TestCase):
   @classmethod
   def setUpClass(cls):