add name uop (#9149)

* add name uop, TODO: refactor renderer to use

* renderer uses name uop

* fix tests

* render

* ptx

test/test_tensor.py

@@ -802,7 +802,7 @@ class TestIdxUpcast(unittest.TestCase):
       if s.ast.op is Ops.SINK:
         renderer = Device[s.bufs[0].device].renderer
         uops = linearize_uop(full_graph_rewrite(rewrite_shapetracker_with_index(s.ast, renderer), renderer))
-        renderer.render("test", uops)
+        renderer.render(uops)
         return uops
 
   def _assert(self, dtype: DType, a: Tensor):