Qualcomm AI Engine Direct - XR model mld_a enablement (pytorch#9129)

### Summary
- make index op builder more general
- small refactor on layout_transform
- support new pattern of upsample2d

### Test plan
```bash
python backends/qualcomm/tests/test_qnn_delegate.py -k TestQNNQuantizedOperator -s $SERIAL_NO -m SM8650 -b build-android
```

Author: haowhsu-quic

backends/qualcomm/_passes/layout_transform.py

@@ -19,8 +19,6 @@
 from executorch.exir.pass_base import ExportPass, PassResult
 from executorch.exir.sym_util import eval_shape
 
-from .utils import dq_ops, q_ops
-
 
 class LayoutTransform(ExportPass):
     """
@@ -92,8 +90,6 @@ class LayoutTransform(ExportPass):
         exir_ops.edge.aten.topk.default,
         exir_ops.edge.aten._to_copy.default,
         exir_ops.edge.aten.where.self,
-        *q_ops,
-        *dq_ops,
         _operator.getitem,
     }
 
@@ -118,7 +114,6 @@ def __init__(
         super(LayoutTransform, self).__init__()
         self.edge_program = edge_program
         self.insert_permute = insert_permute
-        self.qdq_opset = {*q_ops, *dq_ops}
         self.transformed_tag = QCOM_AXIS_ORDER
 
     def mark_as_transformed(self, node: torch.fx.Node) -> None:

backends/qualcomm/builders/op_index.py

@@ -38,11 +38,11 @@ def define_node(
             nodes_to_wrappers,
         )
 
-        if len(node.args[1]) > 1:
-            # TODO consider to implement it in a recursive way.
-            raise NotImplementedError("Not support tuple of tensor.")
-
-        indices_node = node.args[1][0]
+        # e.g. x[:, index]:
+        # > node.args[1] = [None, indices]
+        # > axis = 1
+        axis = len(node.args[1]) - 1
+        indices_node = node.args[1][axis]
         indices_tensor = self.get_tensor(indices_node, node).to(torch.int32)
         assert indices_tensor.size(0) != 0, "Not support empty indices list"
 
@@ -78,7 +78,7 @@ def define_node(
         gather_op.AddScalarParam(
             OpGather.param_axis,
             PyQnnWrapper.Qnn_DataType_t.QNN_DATATYPE_INT_32,
-            {QCOM_DATA: np.int32(0)},
+            {QCOM_DATA: np.int32(axis)},
         )
 
         return gather_op

backends/qualcomm/tests/models.py

@@ -754,13 +754,19 @@ def forward(self, x):
 
 
 class Index(torch.nn.Module):
-    def __init__(self):
+    def __init__(self, axis):
         super().__init__()
         self.idx0 = torch.tensor([[0, 1], [2, 3], [4, 5]], dtype=torch.int32)
         self.idx1 = torch.tensor([[1, 2], [3, 4], [5, 6]], dtype=torch.int32)
+        self.axis = axis
+        self.dispatcher = {
+            0: lambda x: x[self.idx0] + x[self.idx1],
+            1: lambda x: x[:, self.idx0] + x[:, self.idx1],
+            2: lambda x: x[:, :, self.idx0] + x[:, :, self.idx1],
+        }
 
     def forward(self, x):
-        return x[self.idx0] + x[self.idx1]
+        return self.dispatcher[self.axis](x)
 
 
 class IndexPut(torch.nn.Module):

backends/qualcomm/tests/test_qnn_delegate.py

@@ -474,9 +474,11 @@ def test_qnn_backend_hardtanh(self):
         self.lower_module_and_test_output(module, sample_input)
 
     def test_qnn_backend_index(self):
-        module = Index()  # noqa: F405
+        modules = [Index(0), Index(1), Index(2)]  # noqa: F405
         sample_input = (torch.randn([8, 172, 64]),)
-        self.lower_module_and_test_output(module, sample_input)
+        for i, module in enumerate(modules):
+            with self.subTest(i=i):
+                self.lower_module_and_test_output(module, sample_input)
 
     def test_qnn_backend_index_put(self):
         module = IndexPut()  # noqa: F405
@@ -1470,10 +1472,12 @@ def test_qnn_backend_hardtanh(self):
         self.lower_module_and_test_output(module, sample_input)
 
     def test_qnn_backend_index(self):
-        module = Index()  # noqa: F405
+        modules = [Index(0), Index(1), Index(2)]  # noqa: F405
         sample_input = (torch.randn([8, 172, 64]),)
-        module = self.get_qdq_module(module, sample_input)
-        self.lower_module_and_test_output(module, sample_input)
+        for i, module in enumerate(modules):
+            with self.subTest(i=i):
+                module = self.get_qdq_module(module, sample_input)
+                self.lower_module_and_test_output(module, sample_input)
 
     def test_qnn_backend_index_put(self):
         module = IndexPut()  # noqa: F405