Generate benchmarks automatically (#5561)

Summary:
Pull Request resolved: #5561

## Context

Use the automatic test generation infrastructure to generate operator benchmarks. The overall concept is the same as the test generation; we just structure the generated code in the style of the google benchmark library instead of GTEST.
ghstack-source-id: 244287193

Reviewed By: derekxu, nathanaelsee

Differential Revision: D63286132

fbshipit-source-id: 25c379accf6664dfca8232db81772b638b41c758

backends/vulkan/test/op_tests/generate_op_benchmarks.py

@@ -0,0 +1,84 @@
+# 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.
+
+import argparse
+import os
+
+from typing import Dict
+
+from executorch.backends.vulkan.test.op_tests.cases import test_suites
+
+from executorch.backends.vulkan.test.op_tests.utils.gen_benchmark_vk import (
+    VkBenchmarkFileGen,
+)
+from executorch.backends.vulkan.test.op_tests.utils.gen_computegraph import (
+    ComputeGraphGen,
+)
+from executorch.backends.vulkan.test.op_tests.utils.test_suite import TestSuite
+from torchgen import local
+
+from torchgen.gen import parse_native_yaml, ParsedYaml
+from torchgen.model import DispatchKey, NativeFunction
+
+
+def registry_name(f: NativeFunction) -> str:
+    name = str(f.namespace) + "." + str(f.func.name)
+    if len(f.func.name.overload_name) == 0:
+        name += ".default"
+    return name
+
+
+def construct_f_map(parsed_yaml: ParsedYaml) -> Dict[str, NativeFunction]:
+    f_map: Dict[str, NativeFunction] = {}
+    for f in parsed_yaml.native_functions:
+        f_map[registry_name(f)] = f
+    return f_map
+
+
+def process_test_suites(
+    cpp_generator: VkBenchmarkFileGen,
+    f_map: Dict[str, NativeFunction],
+    test_suites: Dict[str, TestSuite],
+) -> None:
+    for registry_name, op_test_suite in test_suites.items():
+        f = f_map[registry_name]
+        cpp_generator.add_suite(registry_name, f, op_test_suite)
+
+
+@local.parametrize(
+    use_const_ref_for_mutable_tensors=False, use_ilistref_for_tensor_lists=False
+)
+def generate_cpp(
+    native_functions_yaml_path: str, tags_path: str, output_dir: str
+) -> None:
+    output_file = os.path.join(output_dir, "op_benchmarks.cpp")
+    cpp_generator = VkBenchmarkFileGen(output_file)
+
+    parsed_yaml = parse_native_yaml(native_functions_yaml_path, tags_path)
+    f_map = construct_f_map(parsed_yaml)
+
+    ComputeGraphGen.backend_key = parsed_yaml.backend_indices[DispatchKey.CPU]
+
+    process_test_suites(cpp_generator, f_map, test_suites)
+
+    with open(output_file, "w") as file:
+        file.write(cpp_generator.generate_cpp())
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "--aten-yaml-path",
+        help="path to native_functions.yaml file.",
+    )
+    parser.add_argument(
+        "--tags-path",
+        help="Path to tags.yaml. Required by yaml parsing in gen_correctness_vk system.",
+    )
+
+    parser.add_argument("-o", "--output", help="Output directory", required=True)
+    args = parser.parse_args()
+    generate_cpp(args.aten_yaml_path, args.tags_path, args.output)

backends/vulkan/test/op_tests/targets.bzl

@@ -20,6 +20,19 @@ def define_common_targets(is_fbcode = False):
         external_deps = ["torchgen"],
     )
 
+    runtime.python_library(
+        name = "generate_op_benchmarks_lib",
+        srcs = native.glob(["utils/*.py"]) + [
+            "generate_op_benchmarks.py",
+            "cases.py",
+        ],
+        base_module = "executorch.backends.vulkan.test.op_tests",
+        deps = [
+            "fbsource//third-party/pypi/expecttest:expecttest",
+        ],
+        external_deps = ["torchgen"],
+    )
+
     runtime.python_binary(
         name = "generate_op_correctness_tests",
         main_module = "executorch.backends.vulkan.test.op_tests.generate_op_correctness_tests",
@@ -28,6 +41,14 @@ def define_common_targets(is_fbcode = False):
         ],
     )
 
+    runtime.python_binary(
+        name = "generate_op_benchmarks",
+        main_module = "executorch.backends.vulkan.test.op_tests.generate_op_benchmarks",
+        deps = [
+            ":generate_op_benchmarks_lib",
+        ],
+    )
+
     aten_src_path = runtime.external_dep_location("aten-src-path")
     genrule_cmd = [
         "$(exe :generate_op_correctness_tests)",
@@ -45,6 +66,22 @@ def define_common_targets(is_fbcode = False):
         default_outs = ["."],
     )
 
+    benchmarks_genrule_cmd = [
+        "$(exe :generate_op_benchmarks)",
+        "--tags-path $(location {})/aten/src/ATen/native/tags.yaml".format(aten_src_path),
+        "--aten-yaml-path $(location {})/aten/src/ATen/native/native_functions.yaml".format(aten_src_path),
+        "-o $OUT",
+    ]
+
+    runtime.genrule(
+        name = "generated_op_benchmarks_cpp",
+        outs = {
+            "op_benchmarks.cpp": ["op_benchmarks.cpp"],
+        },
+        cmd = " ".join(benchmarks_genrule_cmd),
+        default_outs = ["."],
+    )
+
     pt_operator_library(
         name = "all_aten_ops",
         check_decl = False,
@@ -76,6 +113,22 @@ def define_common_targets(is_fbcode = False):
         ],
     )
 
+    runtime.cxx_binary(
+        name = "compute_graph_op_benchmarks_bin",
+        srcs = [
+            ":generated_op_benchmarks_cpp[op_benchmarks.cpp]",
+        ],
+        compiler_flags = [
+            "-Wno-unused-variable",
+        ],
+        define_static_target = False,
+        deps = [
+            "//third-party/benchmark:benchmark",
+            "//executorch/backends/vulkan:vulkan_graph_runtime",
+            ":all_aten_ops_lib",
+        ],
+    )
+
     runtime.cxx_test(
         name = "compute_graph_op_tests",
         srcs = [