[mps] dim_order Fix (#7563)

Add dim_order compat support

Differential Revision: D67542995

Author: digantdesai

backends/apple/mps/mps_preprocess.py

@@ -32,6 +32,9 @@
     CompileSpec,
     PreprocessResult,
 )
+
+from executorch.exir.passes.memory_format_ops_pass import DimOrderOpsRevertPass
+from executorch.exir.program._program import _transform
 from torch.export.exported_program import ExportedProgram
 
 FORMAT = "[%(levelname)s %(asctime)s %(filename)s:%(lineno)s] %(message)s"
@@ -83,6 +86,9 @@ def preprocess(
         #    FlatBuffer graph, process the `output` nodes and add their id to
         #    the `output_ids` array in the schema.
 
+        # TODO: Remove this once we have a better support for the dim-order ops.
+        edge_program = _transform(edge_program, DimOrderOpsRevertPass())
+
         mps_graph = MPSGraph(
             version="0",
             mps_nodes=[],

backends/apple/mps/operators/constant_ops.py

@@ -79,6 +79,25 @@ def define_node(
         )
 
 
+@register_node_visitor
+class ToDimOrderEmptyVisitor(NodeVisitor):
+    target = ["dim_order_ops._empty_dim_order.default"]
+
+    def __init__(self, *args) -> None:
+        super().__init__(*args)
+
+    def define_node(
+        self,
+        node: torch.fx.Node,
+        mps_graph: MPSGraph,
+    ) -> None:
+        # We should never get here, because DimOrderOpsRevertPass replaces this with an aten.empty.memory_format op
+        # But if we do, we can't handle it ATM, so raise an exception
+        raise NotImplementedError(
+            "dim_order_ops._empty_dim_order.default is not supported yet"
+        )
+
+
 @register_node_visitor
 class FullLikeVisitor(NodeVisitor):
     target = "aten.full_like.default"

backends/apple/mps/operators/op_clone.py

@@ -33,3 +33,22 @@ def define_node(
                 )
         input_id = self.define_tensor(get_input_node(node, 0), mps_graph)
         self.tensor_to_id[node] = input_id
+
+
+@register_node_visitor
+class ToDimOrderCopyVisitor(NodeVisitor):
+    target = ["dim_order_ops._to_dim_order_copy.default"]
+
+    def __init__(self, *args) -> None:
+        super().__init__(*args)
+
+    def define_node(
+        self,
+        node: torch.fx.Node,
+        mps_graph: MPSGraph,
+    ) -> None:
+        # We should never get here, because DimOrderOpsRevertPass replaces this with an aten._to_copy op
+        # But if we do, we can't handle it ATM, so raise an exception
+        raise NotImplementedError(
+            "dim_order_ops._to_dim_order_copy.default is not supported yet"
+        )

backends/apple/mps/test/test_mps.py

@@ -1829,6 +1829,21 @@ def forward(self, x):
             Clone(), model_inputs, func_name=inspect.stack()[0].function[5:]
         )
 
+    def test_mps_backend_to_copy(self):
+        class Copy(torch.nn.Module):
+            def forward(self, x):
+                return (
+                    torch.ops.aten._to_copy.default(
+                        x + 2, memory_format=torch.contiguous_format
+                    )
+                    + x
+                )
+
+        model_inputs = (torch.randn(1, 3, 3),)
+        self.lower_and_test_with_partitioner(
+            Copy(), model_inputs, func_name=inspect.stack()[0].function[5:]
+        )
+
     def test_mps_backend_floor(self):
         class Floor(torch.nn.Module):
             def forward(self, x):

backends/apple/mps/test/test_mps_utils.py

@@ -26,10 +26,7 @@
 
 # Config for Capturing the weights, will be moved in the future
 
-# TODO(T182928844): Delegate dim order op to backend.
-_EDGE_COMPILE_CONFIG = exir.EdgeCompileConfig(
-    _check_ir_validity=False, _skip_dim_order=True
-)
+_EDGE_COMPILE_CONFIG = exir.EdgeCompileConfig(_check_ir_validity=False)
 
 
 class ansi_colors:
@@ -219,7 +216,6 @@ def lower_module_and_test_output(
             dynamic_shapes=dynamic_shapes,
             edge_compile_config=EdgeCompileConfig(
                 _check_ir_validity=False,
-                _skip_dim_order=True,  # TODO(T182928844): Delegate dim order op to backend.
             ),
         )
 
@@ -250,7 +246,6 @@ def lower_module_and_test_output(
                 export(delegated_program, sample_inputs, strict=True),
                 compile_config=exir.EdgeCompileConfig(
                     _check_ir_validity=False,
-                    _skip_dim_order=True,  # TODO(T182928844): Delegate dim order op to backend.
                 ),
             ).to_executorch(
                 config=ExecutorchBackendConfig(extract_delegate_segments=False)