[Backend Tester] Add Qualcomm tester and register flow

backends/qualcomm/tests/TARGETS

@@ -37,3 +37,13 @@ python_library(
         "//executorch/backends/qualcomm/debugger:utils",
     ],
 )
+
+python_library(
+    name = "tester",
+    srcs = [
+        "tester.py",
+    ],
+    deps = [
+        ":test_qnn_delegate"
+    ]
+)

backends/qualcomm/tests/tester.py

@@ -0,0 +1,88 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
+from typing import Any, List, Optional, Tuple
+
+import executorch
+import executorch.backends.test.harness.stages as BaseStages
+
+import torch
+from executorch.backends.qualcomm._passes.qnn_pass_manager import QnnPassManager
+from executorch.backends.qualcomm.partition.qnn_partitioner import QnnPartitioner
+from executorch.backends.qualcomm.utils.utils import (
+    generate_htp_compiler_spec,
+    generate_qnn_executorch_compiler_spec,
+    get_soc_to_chipset_map,
+)
+from executorch.backends.test.harness import Tester as TesterBase
+from executorch.backends.test.harness.stages import StageType
+from executorch.exir import EdgeCompileConfig, to_edge_transform_and_lower
+from executorch.exir.backend.partitioner import Partitioner
+from torch.export import ExportedProgram
+
+
+class Partition(BaseStages.Partition):
+    def __init__(self, partitioner: Optional[Partitioner] = None):
+        super().__init__(
+            partitioner=partitioner or QnnPartitioner,
+        )
+
+
+class ToEdgeTransformAndLower(BaseStages.ToEdgeTransformAndLower):
+    def __init__(
+        self,
+        partitioners: Optional[List[Partitioner]] = None,
+        edge_compile_config: Optional[EdgeCompileConfig] = None,
+        soc_model: str = "SM8650",
+    ):
+        backend_options = generate_htp_compiler_spec(use_fp16=True)
+        self.chipset = get_soc_to_chipset_map()[soc_model]
+        self.compiler_specs = generate_qnn_executorch_compiler_spec(
+            soc_model=self.chipset,
+            backend_options=backend_options,
+        )
+
+        super().__init__(
+            partitioners=partitioners or [QnnPartitioner(self.compiler_specs)],
+            edge_compile_config=edge_compile_config
+            or EdgeCompileConfig(_check_ir_validity=False),
+            default_partitioner_cls=QnnPartitioner,
+        )
+
+    def run(self, artifact: ExportedProgram, inputs=None) -> None:
+        ep = QnnPassManager().transform_for_export_pipeline(artifact)
+        transform_passes = QnnPassManager().get_to_edge_transform_passes(ep)
+
+        self.edge_dialect_program = to_edge_transform_and_lower(
+            ep,
+            transform_passes=transform_passes,
+            partitioner=self.partitioners,
+            compile_config=self.edge_compile_conf,
+        )
+
+
+class QualcommTester(TesterBase):
+    def __init__(
+        self,
+        module: torch.nn.Module,
+        example_inputs: Tuple[torch.Tensor],
+        dynamic_shapes: Optional[Tuple[Any]] = None,
+    ):
+        # Specialize for Qualcomm
+        stage_classes = (
+            executorch.backends.test.harness.Tester.default_stage_classes()
+            | {
+                StageType.PARTITION: Partition,
+                StageType.TO_EDGE_TRANSFORM_AND_LOWER: ToEdgeTransformAndLower,
+            }
+        )
+
+        super().__init__(
+            module=module,
+            stage_classes=stage_classes,
+            example_inputs=example_inputs,
+            dynamic_shapes=dynamic_shapes,
+        )

backends/test/suite/flow.py

@@ -71,4 +71,13 @@ def all_flows() -> dict[str, TestFlow]:
     except Exception as e:
         logger.info(f"Skipping Vulkan flow registration: {e}")
 
+    try:
+        from executorch.backends.test.suite.flows.qualcomm import QUALCOMM_TEST_FLOW
+
+        flows += [
+            QUALCOMM_TEST_FLOW,
+        ]
+    except Exception as e:
+        logger.info(f"Skipping Qualcomm flow registration: {e}")
+
     return {f.name: f for f in flows if f is not None}

backends/test/suite/flows/qualcomm.py

@@ -0,0 +1,17 @@
+from executorch.backends.qualcomm.tests.tester import QualcommTester
+from executorch.backends.test.suite.flow import TestFlow
+
+
+def _create_qualcomm_flow(
+    name: str,
+    quantize: bool = False,
+) -> TestFlow:
+    return TestFlow(
+        name,
+        backend="qualcomm",
+        tester_factory=QualcommTester,
+        quantize=quantize,
+    )
+
+
+QUALCOMM_TEST_FLOW = _create_qualcomm_flow("qualcomm")