Revert "Fix standalone compile for op with multiple outputs (#96936)"

This reverts commit 37cde56658e20afae6d94b70d53e4131043e09e8.

Reverted https://github.com/pytorch/pytorch/pull/96936 on behalf of https://github.com/kit1980 due to Broke inductor tests on macos-12-py3-arm64 https://github.com/pytorch/pytorch/actions/runs/4458548491/jobs/7830566793

test/inductor/test_standalone_compile.py

@@ -2,7 +2,6 @@
 import torch
 from torch import _dynamo as dynamo, _inductor as inductor
 from torch._dynamo.test_case import run_tests, TestCase
-from torch._inductor.utils import gen_gm_and_inputs
 from torch.fx import symbolic_trace
 from torch.fx.experimental.proxy_tensor import make_fx
 from torch.testing._internal.inductor_utils import HAS_CPU
@@ -97,18 +96,6 @@ class TestStandaloneInductor(TestCase):
         actual = mod_opt(inp)
         self.assertEqual(actual, correct)
 
-    def test_inductor_via_op_with_multiple_outputs(self):
-        x1 = torch.randn((2, 512, 128))
-        x2 = [128]
-        x3 = torch.randn((128))
-        x4 = torch.randn((128,))
-        x5 = 1e-6
-        mod, inp = gen_gm_and_inputs(
-            torch.ops.aten.native_layer_norm.default, (x1, x2, x3, x4, x5), {}
-        )
-        mod_opt = inductor.compile(mod, inp)
-        self.assertEqual(mod(*inp), mod_opt(*inp))
-
 
 if __name__ == "__main__":
     if HAS_CPU:

torch/_inductor/compile_fx.py

@@ -572,14 +572,6 @@ def graph_returns_tuple(gm: torch.fx.GraphModule):
     (rv,) = output_node(gm).args
     if isinstance(rv, (list, tuple)):
         return True
-    if (
-        isinstance(rv, torch.fx.node.Node)
-        and hasattr(rv.target, "_schema")
-        and len(rv.target._schema.returns) > 1
-        and all(str(ret.type) == "Tensor" for ret in rv.target._schema.returns)
-    ):
-        # for graphs whose result is one node with multiple outputs
-        return True
     return False