Feature/flattened member count

numba_dpex/core/datamodel/models.py

@@ -20,6 +20,30 @@
 )
 
 
+def _get_flattened_member_count(ty):
+    """Return the number of fields in an instance of a given StructModel."""
+    flattened_member_count = 0
+    members = ty._members
+    for member in members:
+        if isinstance(member, types.UniTuple):
+            flattened_member_count += member.count
+        elif isinstance(
+            member,
+            (
+                types.scalars.Integer,
+                types.misc.PyObject,
+                types.misc.RawPointer,
+                types.misc.CPointer,
+                types.misc.MemInfoPointer,
+            ),
+        ):
+            flattened_member_count += 1
+        else:
+            raise UnreachableError
+
+    return flattened_member_count
+
+
 class GenericPointerModel(PrimitiveModel):
     def __init__(self, dmm, fe_type):
         adrsp = (
@@ -68,26 +92,7 @@ def __init__(self, dmm, fe_type):
     @property
     def flattened_field_count(self):
         """Return the number of fields in an instance of a USMArrayModel."""
-        flattened_member_count = 0
-        members = self._members
-        for member in members:
-            if isinstance(member, types.UniTuple):
-                flattened_member_count += member.count
-            elif isinstance(
-                member,
-                (
-                    types.scalars.Integer,
-                    types.misc.PyObject,
-                    types.misc.RawPointer,
-                    types.misc.CPointer,
-                    types.misc.MemInfoPointer,
-                ),
-            ):
-                flattened_member_count += 1
-            else:
-                raise UnreachableError
-
-        return flattened_member_count
+        return _get_flattened_member_count(self)
 
 
 class DpnpNdArrayModel(StructModel):
@@ -121,26 +126,7 @@ def __init__(self, dmm, fe_type):
     @property
     def flattened_field_count(self):
         """Return the number of fields in an instance of a DpnpNdArrayModel."""
-        flattened_member_count = 0
-        members = self._members
-        for member in members:
-            if isinstance(member, types.UniTuple):
-                flattened_member_count += member.count
-            elif isinstance(
-                member,
-                (
-                    types.scalars.Integer,
-                    types.misc.PyObject,
-                    types.misc.RawPointer,
-                    types.misc.CPointer,
-                    types.misc.MemInfoPointer,
-                ),
-            ):
-                flattened_member_count += 1
-            else:
-                raise UnreachableError
-
-        return flattened_member_count
+        return _get_flattened_member_count(self)
 
 
 class SyclQueueModel(StructModel):
@@ -211,6 +197,11 @@ def __init__(self, dmm, fe_type):
         ]
         super(RangeModel, self).__init__(dmm, fe_type, members)
 
+    @property
+    def flattened_field_count(self):
+        """Return the number of fields in an instance of a RangeModel."""
+        return _get_flattened_member_count(self)
+
 
 class NdRangeModel(StructModel):
     """The native data model for a
@@ -229,6 +220,11 @@ def __init__(self, dmm, fe_type):
         ]
         super(NdRangeModel, self).__init__(dmm, fe_type, members)
 
+    @property
+    def flattened_field_count(self):
+        """Return the number of fields in an instance of a NdRangeModel."""
+        return _get_flattened_member_count(self)
+
 
 def _init_data_model_manager() -> datamodel.DataModelManager:
     """Initializes a DpexKernelTarget-specific data model manager.

numba_dpex/tests/core/types/DpnpNdArray/test_models.py

@@ -4,12 +4,14 @@
 
 from numba import types
 from numba.core.datamodel import default_manager, models
+from numba.core.registry import cpu_target
 
 from numba_dpex.core.datamodel.models import (
     DpnpNdArrayModel,
     USMArrayModel,
     dpex_data_model_manager,
 )
+from numba_dpex.core.descriptor import dpex_kernel_target
 from numba_dpex.core.types.dpnp_ndarray_type import DpnpNdArray
 
 
@@ -31,3 +33,22 @@ def test_dpnp_ndarray_Model():
     """
 
     assert issubclass(DpnpNdArrayModel, models.StructModel)
+
+
+def test_flattened_member_count():
+    """Test that the number of flattened member count matches the number of
+    flattened args generated by the CpuTarget's ArgPacker.
+    """
+
+    cputargetctx = cpu_target.target_context
+    kerneltargetctx = dpex_kernel_target.target_context
+    dpex_dmm = kerneltargetctx.data_model_manager
+
+    for ndim in range(4):
+        dty = DpnpNdArray(ndim)
+        argty_tuple = tuple([dty])
+        datamodel = dpex_dmm.lookup(dty)
+        num_flattened_args = datamodel.flattened_field_count
+        ap = cputargetctx.get_arg_packer(argty_tuple)
+
+        assert num_flattened_args == len(ap._be_args)

numba_dpex/tests/core/types/USMNdArray/test_models.py

@@ -0,0 +1,27 @@
+# SPDX-FileCopyrightText: 2023 Intel Corporation
+#
+# SPDX-License-Identifier: Apache-2.0
+
+from numba.core.registry import cpu_target
+
+from numba_dpex.core.descriptor import dpex_kernel_target
+from numba_dpex.core.types.usm_ndarray_type import USMNdArray
+
+
+def test_flattened_member_count():
+    """Test that the number of flattened member count matches the number of
+    flattened args generated by the CpuTarget's ArgPacker.
+    """
+
+    cputargetctx = cpu_target.target_context
+    kerneltargetctx = dpex_kernel_target.target_context
+    dpex_dmm = kerneltargetctx.data_model_manager
+
+    for ndim in range(4):
+        dty = USMNdArray(ndim)
+        argty_tuple = tuple([dty])
+        datamodel = dpex_dmm.lookup(dty)
+        num_flattened_args = datamodel.flattened_field_count
+        ap = cputargetctx.get_arg_packer(argty_tuple)
+
+        assert num_flattened_args == len(ap._be_args)

numba_dpex/tests/core/types/range_types/test_data_model.py

@@ -4,16 +4,19 @@
 
 import pytest
 from numba.core.datamodel import default_manager
+from numba.core.registry import cpu_target
 
 from numba_dpex.core.datamodel.models import (
     NdRangeModel,
     RangeModel,
     dpex_data_model_manager,
 )
+from numba_dpex.core.descriptor import dpex_kernel_target
 from numba_dpex.core.types.range_types import NdRangeType, RangeType
 
 rfields = ["ndim", "dim0", "dim1", "dim2"]
 ndrfields = ["ndim", "gdim0", "gdim1", "gdim2", "ldim0", "ldim1", "ldim2"]
+range_tys = [RangeType, NdRangeType]
 
 
 def test_datamodel_registration():
@@ -58,3 +61,23 @@ def test_ndrange_model_fields(field):
         dm.get_field_position(field)
     except:
         pytest.fail(f"Expected field {field} not present in NdRangeModel")
+
+
+@pytest.mark.parametrize("range_type", range_tys)
+def test_flattened_member_count(range_type):
+    """Test that the number of flattened member count matches the number of
+    flattened args generated by the CpuTarget's ArgPacker.
+    """
+
+    cputargetctx = cpu_target.target_context
+    kerneltargetctx = dpex_kernel_target.target_context
+    dpex_dmm = kerneltargetctx.data_model_manager
+
+    for ndim in range(1, 3):
+        dty = range_type(ndim)
+        argty_tuple = tuple([dty])
+        datamodel = dpex_dmm.lookup(dty)
+        num_flattened_args = datamodel.flattened_field_count
+        ap = cputargetctx.get_arg_packer(argty_tuple)
+
+        assert num_flattened_args == len(ap._be_args)