872 lines
31 KiB
Python
872 lines
31 KiB
Python
# Copyright 2023 The MediaPipe Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Bazel build rules for Halide."""
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load("@bazel_skylib//lib:collections.bzl", "collections")
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load("@bazel_tools//tools/cpp:toolchain_utils.bzl", "use_cpp_toolchain")
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def halide_language_copts():
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_common_opts = [
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"-fPIC",
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"-frtti",
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"-Wno-conversion",
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"-Wno-sign-compare",
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]
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_posix_opts = [
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"$(STACK_FRAME_UNLIMITED)",
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"-fno-exceptions",
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"-funwind-tables",
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"-fvisibility-inlines-hidden",
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]
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_msvc_opts = [
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"-D_CRT_SECURE_NO_WARNINGS",
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"/MD",
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]
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return _common_opts + select({
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"//conditions:default": _posix_opts,
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"@mediapipe//mediapipe:windows": _msvc_opts,
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})
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def halide_language_linkopts():
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_linux_opts = [
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"-ldl",
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"-lpthread",
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"-lz",
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"-rdynamic",
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]
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_osx_opts = [
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"-lz",
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"-Wl,-stack_size",
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"-Wl,1000000",
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]
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_msvc_opts = []
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return select({
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"//conditions:default": _linux_opts,
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"@mediapipe//mediapipe:macos": _osx_opts,
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"@mediapipe//mediapipe:windows": _msvc_opts,
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})
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def halide_runtime_linkopts():
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""" Return the linkopts needed when linking against halide_library_runtime.
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Returns:
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List to be used for linkopts.
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"""
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_posix_opts = [
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"-ldl",
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"-lpthread",
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]
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_android_opts = [
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"-llog",
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]
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_msvc_opts = []
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return select({
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"//conditions:default": _posix_opts,
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"@mediapipe//mediapipe:android": _android_opts,
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"@mediapipe//mediapipe:windows": _msvc_opts,
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})
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# Map of halide-target-base -> config_settings
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_HALIDE_TARGET_CONFIG_SETTINGS_MAP = {
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# Android
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"arm-32-android": ["@mediapipe//mediapipe:android_arm"],
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"arm-64-android": ["@mediapipe//mediapipe:android_arm64"],
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"x86-32-android": ["@mediapipe//mediapipe:android_x86"],
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"x86-64-android": ["@mediapipe//mediapipe:android_x86_64"],
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# iOS
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"arm-32-ios": ["@mediapipe//mediapipe:ios_armv7"],
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"arm-64-ios": ["@mediapipe//mediapipe:ios_arm64", "@mediapipe//mediapipe:ios_arm64e"],
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# OSX (or iOS simulator)
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"x86-32-osx": ["@mediapipe//mediapipe:ios_i386"],
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"x86-64-osx": ["@mediapipe//mediapipe:macos_x86_64", "@mediapipe//mediapipe:ios_x86_64"],
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"arm-64-osx": ["@mediapipe//mediapipe:macos_arm64"],
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# Windows
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"x86-64-windows": ["@mediapipe//mediapipe:windows"],
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# Linux
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"x86-64-linux": ["@mediapipe//mediapipe:linux"],
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# Deliberately no //condition:default clause here.
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}
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_HALIDE_TARGET_MAP_DEFAULT = {
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"x86-64-linux": [
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"x86-64-linux-sse41-avx-avx2-fma",
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"x86-64-linux-sse41",
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"x86-64-linux",
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],
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"x86-64-osx": [
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"x86-64-osx-sse41-avx-avx2-fma",
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"x86-64-osx-sse41",
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"x86-64-osx",
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],
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"x86-64-windows": [
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"x86-64-windows-sse41-avx-avx2-fma",
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"x86-64-windows-sse41",
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"x86-64-windows",
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],
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}
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def halide_library_default_target_map():
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return _HALIDE_TARGET_MAP_DEFAULT
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# Alphabetizes the features part of the target to make sure they always match no
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# matter the concatenation order of the target string pieces.
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def _canonicalize_target(halide_target):
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if halide_target == "host":
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return halide_target
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if "," in halide_target:
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fail("Multitarget may not be specified here")
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tokens = halide_target.split("-")
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if len(tokens) < 3:
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fail("Illegal target: %s" % halide_target)
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# rejoin the tokens with the features sorted
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return "-".join(tokens[0:3] + sorted(tokens[3:]))
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# Converts comma and dash separators to underscore and alphabetizes
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# the features part of the target to make sure they always match no
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# matter the concatenation order of the target string pieces.
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def _halide_target_to_bazel_rule_name(multitarget):
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subtargets = multitarget.split(",")
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subtargets = [_canonicalize_target(st).replace("-", "_") for st in subtargets]
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return "_".join(subtargets)
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# The second argument is True if there is a separate file generated
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# for each subtarget of a multitarget output, False if not. The third
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# argument is True if the output is a directory (vs. a single file).
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# The fourth argument is a list of output group(s) that the files should
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# be added to.
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_is_multi = True
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_is_single = False
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_is_file = False
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_output_extensions = {
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"assembly": ("s", _is_multi, _is_file, []),
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"bitcode": ("bc", _is_multi, _is_file, ["generated_bitcode"]),
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"c_header": ("h", _is_single, _is_file, ["generated_headers"]),
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"c_source": ("halide_generated.cpp", _is_multi, _is_file, []),
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"compiler_log": ("halide_compiler_log", _is_single, _is_file, ["generated_object", "generated_compiler_log"]),
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"cpp_stub": ("stub.h", _is_single, _is_file, []),
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"featurization": ("featurization", _is_multi, _is_file, []),
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"llvm_assembly": ("ll", _is_multi, _is_file, []),
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"object": ("o", _is_single, _is_file, ["generated_object"]),
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"python_extension": ("py.cpp", _is_single, _is_file, []),
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"registration": ("registration.cpp", _is_single, _is_file, ["generated_registration"]),
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"schedule": ("schedule.h", _is_single, _is_file, []),
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"static_library": ("a", _is_single, _is_file, ["generated_object"]),
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"stmt": ("stmt", _is_multi, _is_file, []),
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"stmt_html": ("stmt.html", _is_multi, _is_file, []),
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}
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def _add_output_file(f, fmt, output_files, output_dict, verbose_extra_outputs, verbose_output_paths):
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if fmt in verbose_extra_outputs:
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verbose_output_paths.append(f.path)
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output_files.append(f)
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if fmt in _output_extensions:
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for group in _output_extensions[fmt][3]:
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output_dict.setdefault(group, []).append(f)
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HalideFunctionNameInfo = provider(fields = ["function_name"])
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HalideGeneratorBinaryInfo = provider(fields = ["generator_binary"])
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HalideGeneratorNameInfo = provider(fields = ["generator_name_"])
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HalideGeneratorParamsInfo = provider(fields = ["generator_params"])
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HalideLibraryNameInfo = provider(fields = ["library_name"])
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HalideTargetFeaturesInfo = provider(fields = ["target_features"])
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def _gengen_closure_impl(ctx):
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return [
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HalideGeneratorBinaryInfo(generator_binary = ctx.attr.generator_binary),
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HalideGeneratorNameInfo(generator_name_ = ctx.attr.generator_name_),
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]
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_gengen_closure = rule(
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implementation = _gengen_closure_impl,
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attrs = {
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"generator_binary": attr.label(
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executable = True,
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allow_files = True,
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mandatory = True,
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cfg = "exec",
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),
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# "generator_name" is apparently reserved by Bazel for attrs in rules
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"generator_name_": attr.string(mandatory = True),
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},
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provides = [HalideGeneratorBinaryInfo, HalideGeneratorNameInfo],
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)
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def _halide_library_instance_impl(ctx):
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generator_binary = ctx.attr.generator_closure[HalideGeneratorBinaryInfo].generator_binary if ctx.attr.generator_closure else ""
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generator_name = ctx.attr.generator_closure[HalideGeneratorNameInfo].generator_name_ if ctx.attr.generator_closure else ""
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return [
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HalideFunctionNameInfo(function_name = ctx.attr.function_name),
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HalideGeneratorBinaryInfo(generator_binary = generator_binary),
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HalideGeneratorNameInfo(generator_name_ = generator_name),
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HalideGeneratorParamsInfo(generator_params = ctx.attr.generator_params),
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HalideLibraryNameInfo(library_name = ctx.attr.library_name),
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HalideTargetFeaturesInfo(target_features = ctx.attr.target_features),
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]
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_halide_library_instance = rule(
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implementation = _halide_library_instance_impl,
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attrs = {
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"function_name": attr.string(),
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"generator_closure": attr.label(
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cfg = "exec",
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providers = [HalideGeneratorBinaryInfo, HalideGeneratorNameInfo],
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),
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"generator_params": attr.string_list(),
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"library_name": attr.string(),
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"target_features": attr.string_list(),
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},
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provides = [
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HalideFunctionNameInfo,
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HalideGeneratorBinaryInfo,
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HalideGeneratorNameInfo,
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HalideGeneratorParamsInfo,
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HalideLibraryNameInfo,
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HalideTargetFeaturesInfo,
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],
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)
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def _gengen_impl(ctx):
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if _has_dupes(ctx.attr.requested_outputs):
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fail("Duplicate values in outputs: " + str(ctx.attr.requested_outputs))
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function_name = ctx.attr.function_name[HalideFunctionNameInfo].function_name if ctx.attr.function_name else ""
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generator_binary = ctx.attr.generator_binary[HalideGeneratorBinaryInfo].generator_binary if ctx.attr.generator_binary else ""
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generator_name_ = ctx.attr.generator_name_[HalideGeneratorNameInfo].generator_name_ if ctx.attr.generator_name_ else ""
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generator_params = ctx.attr.generator_params[HalideGeneratorParamsInfo].generator_params if ctx.attr.generator_params else []
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library_name = ctx.attr.library_name[HalideLibraryNameInfo].library_name if ctx.attr.library_name else ""
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target_features = ctx.attr.target_features[HalideTargetFeaturesInfo].target_features if ctx.attr.target_features else []
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for gp in generator_params:
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if " " in gp:
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fail("%s: Entries in generator_params must not contain spaces." % library_name)
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# Escape backslashes and double quotes.
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generator_params = [gp.replace("\\", '\\\\"').replace('"', '\\"') for gp in generator_params]
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execution_requirements = {}
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# --- Calculate the output type(s) we're going to produce (and which ones should be verbose)
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quiet_extra_outputs = []
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verbose_extra_outputs = []
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if ctx.attr.consider_halide_extra_outputs:
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if "halide_extra_outputs" in ctx.var:
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verbose_extra_outputs = ctx.var.get("halide_extra_outputs", "").split(",")
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if "halide_extra_outputs_quiet" in ctx.var:
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quiet_extra_outputs = ctx.var.get("halide_extra_outputs_quiet", "").split(",")
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requested_outputs = sorted(collections.uniq(ctx.attr.requested_outputs +
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verbose_extra_outputs +
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quiet_extra_outputs))
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# --- Assemble halide_target, adding extra features if necessary
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base_target = ctx.attr.halide_base_target
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if "," in base_target:
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fail("halide_base_target should never be a multitarget")
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if len(base_target.split("-")) != 3:
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fail("halide_base_target should have exactly 3 components")
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target_features = target_features + ctx.var.get("halide_target_features", "").split(",")
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if "no_runtime" in target_features:
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fail("Specifying 'no_runtime' in halide_target_features is not supported; " +
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"please add 'add_halide_runtime_deps = False' to the halide_library() rule instead.")
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for san in ["asan", "msan", "tsan"]:
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if san in target_features:
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fail("halide_library doesn't support '%s' in halide_target_features; please build with --config=%s instead." % (san, san))
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# Append the features common to everything.
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target_features.append("c_plus_plus_name_mangling")
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target_features.append("no_runtime")
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# Make it all neat and tidy.
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target_features = sorted(collections.uniq(target_features))
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# Get the multitarget list (if any) from halide_target_map
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halide_targets = ctx.attr.halide_target_map.get(base_target, [base_target])
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# Add the extra features to all of them
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halide_targets = _add_features_to_all(halide_targets, target_features)
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leaf_name = ctx.attr.filename.split("/")[-1]
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output_files = []
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output_dict = {}
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verbose_output_paths = []
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inputs = []
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env = {
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"HL_DEBUG_CODEGEN": str(ctx.var.get("halide_debug_codegen", 0)),
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# --define halide_llvm_args=-time-passes is a typical usage
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"HL_LLVM_ARGS": str(ctx.var.get("halide_llvm_args", "")),
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}
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be_very_quiet = ctx.var.get("halide_experimental_quiet", False) # I'm hunting wabbit...
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# --- Calculate the final set of output files
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for fmt in requested_outputs:
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if fmt not in _output_extensions:
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fail("Unknown Halide output '%s'; known outputs are %s" %
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(fmt, sorted(_output_extensions.keys())))
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ext, is_multiple, is_dir, _ = _output_extensions[fmt]
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# Special-case Windows file extensions
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if "windows" in halide_targets[-1]:
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if ext == "o":
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ext = "obj"
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if ext == "a":
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ext = "lib"
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if is_multiple and len(halide_targets) > 1:
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for h in halide_targets:
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suffix = _canonicalize_target(h)
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name = "%s-%s.%s" % (ctx.attr.filename, suffix, ext)
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f = ctx.actions.declare_directory(name) if is_dir else ctx.actions.declare_file(name)
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_add_output_file(f, fmt, output_files, output_dict, verbose_extra_outputs, verbose_output_paths)
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else:
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name = "%s.%s" % (ctx.attr.filename, ext)
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f = ctx.actions.declare_directory(name) if is_dir else ctx.actions.declare_file(name)
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_add_output_file(f, fmt, output_files, output_dict, verbose_extra_outputs, verbose_output_paths)
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# --- Progress message(s), including log info about any 'extra' files being output due to --define halide_extra_output
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progress_message = "Executing generator %s with target (%s) args (%s)." % (
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generator_name_,
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",".join(halide_targets),
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" ".join(generator_params),
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)
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for f in output_files:
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if any([f.path.endswith(suf) for suf in [".h", ".a", ".o", ".lib", ".registration.cpp", ".bc", ".halide_compiler_log"]]):
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continue
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# If an extra output was specified via --define halide_extra_outputs=foo on the command line,
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# add to the progress message (so that it is ephemeral and doesn't clog stdout).
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#
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# (Trailing space is intentional since Starlark will append a period to the end,
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# making copy-n-paste harder than it might otherwise be...)
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if not be_very_quiet:
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extra_msg = "Emitting extra Halide output: %s " % f.path
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progress_message += "\n" + extra_msg
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if f.path in verbose_output_paths:
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# buildifier: disable=print
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print(extra_msg)
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# --- Construct the arguments list for the Generator
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arguments = ctx.actions.args()
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arguments.add("-o", output_files[0].dirname)
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if ctx.attr.generate_runtime:
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arguments.add("-r", leaf_name)
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if len(halide_targets) > 1:
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fail("Only one halide_target allowed when using generate_runtime")
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if function_name:
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fail("halide_function_name not allowed when using generate_runtime")
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else:
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arguments.add("-g", generator_name_)
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arguments.add("-n", leaf_name)
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if function_name:
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arguments.add("-f", function_name)
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if requested_outputs:
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arguments.add_joined("-e", requested_outputs, join_with = ",")
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# Can't use add_joined(), as it will insert a space after target=
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arguments.add("target=%s" % (",".join(halide_targets)))
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if generator_params:
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for p in generator_params:
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for s in ["target"]:
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if p.startswith("%s=" % s):
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fail("You cannot specify %s in the generator_params parameter in bazel." % s)
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arguments.add_all(generator_params)
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show_gen_arg = ctx.var.get("halide_show_generator_command", "")
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# If it's an exact match of a fully qualified path, show just that one.
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# If it's * or "all", match everything.
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if library_name and show_gen_arg in [library_name, "all", "*"] and not ctx.attr.generate_runtime:
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# The 'Args' object can be printed, but can't be usefully converted to a string, or iterated,
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# so we'll reproduce the logic here. We'll also take the opportunity to add or augment
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# some args to be more useful to whoever runs it (eg, add `-v=1`, add some output files).
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sg_args = ["-v", "1"]
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sg_args += ["-o", "/tmp"]
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sg_args += ["-g", generator_name_]
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sg_args += ["-n", leaf_name]
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if function_name:
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sg_args += ["-f", function_name]
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if requested_outputs:
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# Ensure that several commonly-useful output are added
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ro = sorted(collections.uniq(requested_outputs + ["stmt", "assembly", "llvm_assembly"]))
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sg_args += ["-e", ",".join(ro)]
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sg_args.append("target=%s" % (",".join(halide_targets)))
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if generator_params:
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sg_args += generator_params
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# buildifier: disable=print
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print(
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"\n\nTo locally run the Generator for",
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library_name,
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"use the command:\n\n",
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"bazel run -c opt",
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generator_binary.label,
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"--",
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" ".join(sg_args),
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"\n\n",
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)
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# Finally... run the Generator.
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ctx.actions.run(
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execution_requirements = execution_requirements,
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arguments = [arguments],
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env = env,
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executable = generator_binary.files_to_run.executable,
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mnemonic = "ExecuteHalideGenerator",
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inputs = depset(direct = inputs),
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outputs = output_files,
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progress_message = progress_message,
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exec_group = "generator",
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)
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return [
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DefaultInfo(files = depset(direct = output_files)),
|
|
OutputGroupInfo(**output_dict),
|
|
]
|
|
|
|
_gengen = rule(
|
|
implementation = _gengen_impl,
|
|
attrs = {
|
|
"consider_halide_extra_outputs": attr.bool(),
|
|
"filename": attr.string(),
|
|
"generate_runtime": attr.bool(default = False),
|
|
"generator_binary": attr.label(
|
|
cfg = "exec",
|
|
providers = [HalideGeneratorBinaryInfo],
|
|
),
|
|
# "generator_name" is apparently reserved by Bazel for attrs in rules
|
|
"generator_name_": attr.label(
|
|
cfg = "exec",
|
|
providers = [HalideGeneratorNameInfo],
|
|
),
|
|
"halide_base_target": attr.string(),
|
|
"function_name": attr.label(
|
|
cfg = "target",
|
|
providers = [
|
|
HalideFunctionNameInfo,
|
|
],
|
|
),
|
|
"generator_params": attr.label(
|
|
cfg = "target",
|
|
providers = [
|
|
HalideGeneratorParamsInfo,
|
|
],
|
|
),
|
|
"library_name": attr.label(
|
|
cfg = "target",
|
|
providers = [
|
|
HalideLibraryNameInfo,
|
|
],
|
|
),
|
|
"target_features": attr.label(
|
|
cfg = "target",
|
|
providers = [
|
|
HalideTargetFeaturesInfo,
|
|
],
|
|
),
|
|
"halide_target_map": attr.string_list_dict(),
|
|
"requested_outputs": attr.string_list(),
|
|
"_cc_toolchain": attr.label(default = "@bazel_tools//tools/cpp:current_cc_toolchain"),
|
|
},
|
|
fragments = ["cpp"],
|
|
output_to_genfiles = True,
|
|
toolchains = use_cpp_toolchain(),
|
|
exec_groups = {
|
|
"generator": exec_group(),
|
|
},
|
|
)
|
|
|
|
def _add_target_features(target, features):
|
|
if "," in target:
|
|
fail("Cannot use multitarget here")
|
|
new_target = target.split("-")
|
|
for f in features:
|
|
if f and f not in new_target:
|
|
new_target.append(f)
|
|
return "-".join(new_target)
|
|
|
|
def _add_features_to_all(halide_targets, features):
|
|
return [_canonicalize_target(_add_target_features(t, features)) for t in halide_targets]
|
|
|
|
def _has_dupes(some_list):
|
|
clean = collections.uniq(some_list)
|
|
return sorted(some_list) != sorted(clean)
|
|
|
|
# Target features which do not affect runtime compatibility.
|
|
_IRRELEVANT_FEATURES = collections.uniq([
|
|
"arm_dot_prod",
|
|
"arm_fp16",
|
|
"c_plus_plus_name_mangling",
|
|
"check_unsafe_promises",
|
|
"embed_bitcode",
|
|
"enable_llvm_loop_opt",
|
|
"large_buffers",
|
|
"no_asserts",
|
|
"no_bounds_query",
|
|
"profile",
|
|
"strict_float",
|
|
"sve",
|
|
"sve2",
|
|
"trace_loads",
|
|
"trace_pipeline",
|
|
"trace_realizations",
|
|
"trace_stores",
|
|
"user_context",
|
|
"wasm_sat_float_to_int",
|
|
"wasm_signext",
|
|
"wasm_simd128",
|
|
])
|
|
|
|
def _discard_irrelevant_features(halide_target_features = []):
|
|
return sorted(collections.uniq([f for f in halide_target_features if f not in _IRRELEVANT_FEATURES]))
|
|
|
|
def _halide_library_runtime_target_name(halide_target_features = []):
|
|
return "_".join(["halide_library_runtime"] + _discard_irrelevant_features(halide_target_features))
|
|
|
|
def _define_halide_library_runtime(
|
|
halide_target_features = [],
|
|
compatible_with = []):
|
|
target_name = _halide_library_runtime_target_name(halide_target_features)
|
|
|
|
if not native.existing_rule("halide_library_runtime.generator"):
|
|
halide_generator(
|
|
name = "halide_library_runtime.generator",
|
|
srcs = [],
|
|
deps = [],
|
|
visibility = ["//visibility:private"],
|
|
)
|
|
condition_deps = {}
|
|
for base_target, cfgs in _HALIDE_TARGET_CONFIG_SETTINGS_MAP.items():
|
|
target_features = _discard_irrelevant_features(halide_target_features)
|
|
halide_target_name = _halide_target_to_bazel_rule_name(base_target)
|
|
gengen_name = "%s_%s" % (halide_target_name, target_name)
|
|
|
|
_halide_library_instance(
|
|
name = "%s.library_instance" % gengen_name,
|
|
compatible_with = compatible_with,
|
|
function_name = "",
|
|
generator_closure = ":halide_library_runtime.generator_closure",
|
|
generator_params = [],
|
|
library_name = "",
|
|
target_features = target_features,
|
|
visibility = ["//visibility:private"],
|
|
)
|
|
hl_instance = ":%s.library_instance" % gengen_name
|
|
|
|
_gengen(
|
|
name = gengen_name,
|
|
compatible_with = compatible_with,
|
|
filename = "%s/%s" % (halide_target_name, target_name),
|
|
generate_runtime = True,
|
|
generator_binary = hl_instance,
|
|
generator_name_ = hl_instance,
|
|
halide_base_target = base_target,
|
|
requested_outputs = ["object"],
|
|
tags = ["manual"],
|
|
target_features = hl_instance,
|
|
visibility = ["@halide//:__subpackages__"],
|
|
)
|
|
for cfg in cfgs:
|
|
condition_deps[cfg] = [":%s" % gengen_name]
|
|
|
|
deps = []
|
|
native.cc_library(
|
|
name = target_name,
|
|
compatible_with = compatible_with,
|
|
srcs = select(condition_deps),
|
|
linkopts = halide_runtime_linkopts(),
|
|
tags = ["manual"],
|
|
deps = deps,
|
|
visibility = ["//visibility:public"],
|
|
)
|
|
|
|
return target_name
|
|
|
|
def _standard_library_runtime_features():
|
|
_standard_features = [
|
|
[],
|
|
["cuda"],
|
|
["metal"],
|
|
["opencl"],
|
|
["openglcompute"],
|
|
["openglcompute", "egl"],
|
|
]
|
|
return [f for f in _standard_features] + [f + ["debug"] for f in _standard_features]
|
|
|
|
def _standard_library_runtime_names():
|
|
return collections.uniq([_halide_library_runtime_target_name(f) for f in _standard_library_runtime_features()])
|
|
|
|
def halide_library_runtimes(compatible_with = []):
|
|
unused = [
|
|
_define_halide_library_runtime(f, compatible_with = compatible_with)
|
|
for f in _standard_library_runtime_features()
|
|
]
|
|
unused = unused # unused variable
|
|
|
|
def halide_generator(
|
|
name,
|
|
srcs,
|
|
compatible_with = [],
|
|
copts = [],
|
|
deps = [],
|
|
generator_name = "",
|
|
includes = [],
|
|
tags = [],
|
|
testonly = False,
|
|
visibility = None):
|
|
if not name.endswith(".generator"):
|
|
fail("halide_generator rules must end in .generator")
|
|
|
|
basename = name[:-10] # strip ".generator" suffix
|
|
if not generator_name:
|
|
generator_name = basename
|
|
|
|
# Note: This target is public, but should not be needed by the vast
|
|
# majority of users. Unless you are writing a custom Bazel rule that
|
|
# involves Halide generation, you most probably won't need to depend on
|
|
# this rule.
|
|
native.cc_binary(
|
|
name = name,
|
|
copts = copts + halide_language_copts(),
|
|
linkopts = halide_language_linkopts(),
|
|
compatible_with = compatible_with,
|
|
srcs = srcs,
|
|
deps = [
|
|
"@halide//:gengen",
|
|
"@halide//:language",
|
|
] + deps,
|
|
tags = ["manual"] + tags,
|
|
testonly = testonly,
|
|
visibility = ["//visibility:public"],
|
|
)
|
|
|
|
_gengen_closure(
|
|
name = "%s_closure" % name,
|
|
generator_binary = name,
|
|
generator_name_ = generator_name,
|
|
compatible_with = compatible_with,
|
|
testonly = testonly,
|
|
visibility = ["//visibility:private"],
|
|
)
|
|
|
|
# This rule exists to allow us to select() on halide_target_features.
|
|
def _select_halide_library_runtime_impl(ctx):
|
|
f = ctx.attr.halide_target_features
|
|
|
|
standard_runtimes = {t.label.name: t for t in ctx.attr._standard_runtimes}
|
|
|
|
f = sorted(_discard_irrelevant_features(collections.uniq(f)))
|
|
runtime_name = _halide_library_runtime_target_name(f)
|
|
if runtime_name not in standard_runtimes:
|
|
fail(("There is no Halide runtime available for the feature set combination %s. " +
|
|
"Please use contact information from halide-lang.org to contact the Halide " +
|
|
"team to add the right combination.") % str(f))
|
|
|
|
return standard_runtimes[runtime_name][CcInfo]
|
|
|
|
_select_halide_library_runtime = rule(
|
|
implementation = _select_halide_library_runtime_impl,
|
|
attrs = {
|
|
"halide_target_features": attr.string_list(),
|
|
"_standard_runtimes": attr.label_list(
|
|
default = ["@halide//:%s" % n for n in _standard_library_runtime_names()],
|
|
providers = [CcInfo],
|
|
),
|
|
},
|
|
provides = [CcInfo],
|
|
)
|
|
|
|
def halide_library_from_generator(
|
|
name,
|
|
generator,
|
|
add_halide_runtime_deps = True,
|
|
compatible_with = [],
|
|
deps = [],
|
|
function_name = None,
|
|
generator_params = [],
|
|
halide_target_features = [],
|
|
halide_target_map = halide_library_default_target_map(),
|
|
includes = [],
|
|
namespace = None,
|
|
tags = [],
|
|
testonly = False,
|
|
visibility = None):
|
|
if not function_name:
|
|
function_name = name
|
|
|
|
if namespace:
|
|
function_name = "%s::%s" % (namespace, function_name)
|
|
|
|
generator_closure = "%s_closure" % generator
|
|
|
|
_halide_library_instance(
|
|
name = "%s.library_instance" % name,
|
|
compatible_with = compatible_with,
|
|
function_name = function_name,
|
|
generator_closure = generator_closure,
|
|
generator_params = generator_params,
|
|
library_name = "//%s:%s" % (native.package_name(), name),
|
|
target_features = halide_target_features,
|
|
testonly = testonly,
|
|
visibility = ["//visibility:private"],
|
|
)
|
|
hl_instance = ":%s.library_instance" % name
|
|
|
|
condition_deps = {}
|
|
for base_target, cfgs in _HALIDE_TARGET_CONFIG_SETTINGS_MAP.items():
|
|
base_target_name = _halide_target_to_bazel_rule_name(base_target)
|
|
gengen_name = "%s_%s" % (base_target_name, name)
|
|
_gengen(
|
|
name = gengen_name,
|
|
compatible_with = compatible_with,
|
|
consider_halide_extra_outputs = True,
|
|
filename = "%s/%s" % (base_target_name, name),
|
|
function_name = hl_instance,
|
|
generator_binary = generator_closure,
|
|
generator_name_ = generator_closure,
|
|
generator_params = hl_instance,
|
|
halide_base_target = base_target,
|
|
halide_target_map = halide_target_map,
|
|
library_name = hl_instance,
|
|
requested_outputs = ["static_library"],
|
|
tags = ["manual"] + tags,
|
|
target_features = hl_instance,
|
|
testonly = testonly,
|
|
)
|
|
for cfg in cfgs:
|
|
condition_deps[cfg] = [":%s" % gengen_name]
|
|
|
|
# Use a canonical target to build CC, regardless of config detected
|
|
cc_base_target = "x86-64-linux"
|
|
|
|
for output, target_name in [
|
|
("c_header", "%s_h" % name),
|
|
("c_source", "%s_cc" % name),
|
|
]:
|
|
_gengen(
|
|
name = target_name,
|
|
compatible_with = compatible_with,
|
|
filename = name,
|
|
function_name = hl_instance,
|
|
generator_binary = generator_closure,
|
|
generator_name_ = generator_closure,
|
|
generator_params = hl_instance,
|
|
halide_base_target = cc_base_target,
|
|
library_name = hl_instance,
|
|
requested_outputs = [output],
|
|
tags = ["manual"] + tags,
|
|
target_features = hl_instance,
|
|
testonly = testonly,
|
|
)
|
|
|
|
_select_halide_library_runtime(
|
|
name = "%s.halide_library_runtime_deps" % name,
|
|
halide_target_features = halide_target_features,
|
|
compatible_with = compatible_with,
|
|
tags = tags,
|
|
visibility = ["//visibility:private"],
|
|
)
|
|
|
|
native.filegroup(
|
|
name = "%s_object" % name,
|
|
srcs = select(condition_deps),
|
|
output_group = "generated_object",
|
|
visibility = ["//visibility:private"],
|
|
compatible_with = compatible_with,
|
|
tags = tags,
|
|
testonly = testonly,
|
|
)
|
|
|
|
native.cc_library(
|
|
name = name,
|
|
srcs = ["%s_object" % name],
|
|
hdrs = [
|
|
":%s_h" % name,
|
|
],
|
|
deps = deps +
|
|
["@halide//:runtime"] + # for HalideRuntime.h, etc
|
|
([":%s.halide_library_runtime_deps" % name] if add_halide_runtime_deps else []), # for the runtime implementation
|
|
defines = ["HALIDE_FUNCTION_ATTRS=HALIDE_MUST_USE_RESULT"],
|
|
compatible_with = compatible_with,
|
|
includes = includes,
|
|
tags = tags,
|
|
testonly = testonly,
|
|
visibility = visibility,
|
|
linkstatic = 1,
|
|
)
|
|
|
|
# Return the fully-qualified built target name.
|
|
return "//%s:%s" % (native.package_name(), name)
|
|
|
|
def halide_library(
|
|
name,
|
|
srcs = [],
|
|
add_halide_runtime_deps = True,
|
|
copts = [],
|
|
compatible_with = [],
|
|
filter_deps = [],
|
|
function_name = None,
|
|
generator_params = [],
|
|
generator_deps = [],
|
|
generator_name = None,
|
|
halide_target_features = [],
|
|
halide_target_map = halide_library_default_target_map(),
|
|
includes = [],
|
|
namespace = None,
|
|
tags = [],
|
|
testonly = False,
|
|
visibility = None):
|
|
if not srcs and not generator_deps:
|
|
fail("halide_library needs at least one of srcs or generator_deps to provide a generator")
|
|
|
|
halide_generator(
|
|
name = "%s.generator" % name,
|
|
srcs = srcs,
|
|
compatible_with = compatible_with,
|
|
generator_name = generator_name,
|
|
deps = generator_deps,
|
|
includes = includes,
|
|
copts = copts,
|
|
tags = tags,
|
|
testonly = testonly,
|
|
visibility = visibility,
|
|
)
|
|
|
|
return halide_library_from_generator(
|
|
name = name,
|
|
generator = ":%s.generator" % name,
|
|
add_halide_runtime_deps = add_halide_runtime_deps,
|
|
compatible_with = compatible_with,
|
|
deps = filter_deps,
|
|
function_name = function_name,
|
|
generator_params = generator_params,
|
|
halide_target_features = halide_target_features,
|
|
halide_target_map = halide_target_map,
|
|
includes = includes,
|
|
namespace = namespace,
|
|
tags = tags,
|
|
testonly = testonly,
|
|
visibility = visibility,
|
|
)
|