Source code
Revision control
Copy as Markdown
Other Tools
load("@rules_license//rules:license.bzl", "license")
load("@bazel_skylib//lib:selects.bzl", "selects")
load("@rules_cc//cc:defs.bzl", "cc_test")
package(
default_applicable_licenses = ["//:license"],
default_visibility = ["//visibility:public"],
)
license(
name = "license",
package_name = "highway",
)
licenses(["notice"])
exports_files(["LICENSE"])
# Detect compiler:
config_setting(
name = "compiler_clang",
flag_values = {"@bazel_tools//tools/cpp:compiler": "clang"},
)
config_setting(
name = "compiler_clangcl",
flag_values = {"@bazel_tools//tools/cpp:compiler": "lexan"},
)
config_setting(
name = "compiler_msvc_actual",
flag_values = {"@bazel_tools//tools/cpp:compiler": "msvc"},
)
# The above is insufficient for Bazel on Windows, which does not seem to
# detect/set a compiler flag. This workaround prevents compile errors due to
# passing clang-only warning flags to MSVC.
config_setting(
name = "compiler_msvc_cpu",
values = {
"cpu": "x64_windows",
},
)
selects.config_setting_group(
name = "compiler_msvc",
match_any = [
":compiler_msvc_actual",
":compiler_msvc_cpu",
],
)
config_setting(
name = "compiler_emscripten",
values = {"cpu": "wasm32"},
)
config_setting(
name = "compiler_gcc_bug",
flag_values = {
"@bazel_tools//tools/cpp:compiler": "compiler",
},
)
config_setting(
name = "compiler_gcc_actual",
flag_values = {
"@bazel_tools//tools/cpp:compiler": "gcc",
},
)
selects.config_setting_group(
name = "compiler_gcc",
match_any = [
":compiler_gcc_bug",
":compiler_gcc_actual",
],
)
# Additional warnings for Clang OR GCC (skip for MSVC)
CLANG_GCC_COPTS = [
"-Wunused-parameter",
"-Wunused-variable",
"-Wextra-semi",
"-Wunreachable-code",
]
# Warnings supported by Clang and Clang-cl
CLANG_OR_CLANGCL_OPTS = CLANG_GCC_COPTS + [
"-Wfloat-overflow-conversion",
"-Wfloat-zero-conversion",
"-Wfor-loop-analysis",
"-Wgnu-redeclared-enum",
"-Winfinite-recursion",
"-Wliteral-conversion",
"-Wno-c++98-compat",
"-Wno-unused-command-line-argument",
"-Wprivate-header",
"-Wself-assign",
"-Wstring-conversion",
"-Wtautological-overlap-compare",
"-Wthread-safety-analysis",
"-Wundefined-func-template",
"-Wunused-comparison",
]
# Warnings only supported by Clang, but not Clang-cl
CLANG_ONLY_COPTS = CLANG_OR_CLANGCL_OPTS + [
# Do not treat the third_party headers as system headers when building
# highway - the errors are pertinent.
"--no-system-header-prefix=third_party/highway",
]
COPTS = select({
":compiler_msvc": [],
":compiler_gcc": CLANG_GCC_COPTS,
":compiler_clangcl": CLANG_OR_CLANGCL_OPTS,
# Default to clang because compiler detection only works in Bazel
"//conditions:default": CLANG_ONLY_COPTS,
}) + select({
"@platforms//cpu:riscv64": [
"-march=rv64gcv1p0",
"-menable-experimental-extensions",
],
"//conditions:default": [
],
})
DEFINES = select({
":compiler_msvc": ["HWY_SHARED_DEFINE"],
":compiler_clangcl": ["HWY_SHARED_DEFINE"],
"//conditions:default": [],
})
# Unused on Bazel builds, where this is not defined/known; Copybara replaces
# usages with an empty list.
COMPAT = [
"//buildenv/target:non_prod", # includes mobile/vendor.
]
# WARNING: changing flags such as HWY_DISABLED_TARGETS may break users without
# failing integration tests, if the machine running tests does not support the
# newly enabled instruction set, or the failure is only caught by sanitizers
# which do not run in CI.
cc_library(
name = "hwy",
srcs = [
"hwy/aligned_allocator.cc",
"hwy/per_target.cc",
"hwy/print.cc",
"hwy/targets.cc",
],
# Normal headers with include guards
hdrs = [
"hwy/aligned_allocator.h",
"hwy/base.h",
"hwy/cache_control.h",
"hwy/detect_compiler_arch.h", # private
"hwy/print.h",
],
compatible_with = [],
copts = COPTS,
defines = DEFINES,
local_defines = ["hwy_EXPORTS"],
textual_hdrs = [
# These are textual because config macros influence them:
"hwy/detect_targets.h", # private
"hwy/targets.h",
# This .cc file #includes itself through foreach_target.h
"hwy/per_target.cc",
# End of list
"hwy/highway.h", # public
"hwy/foreach_target.h", # public
"hwy/per_target.h", # public
"hwy/print-inl.h", # public
"hwy/highway_export.h", # public
"hwy/ops/arm_neon-inl.h",
"hwy/ops/arm_sve-inl.h",
"hwy/ops/emu128-inl.h",
"hwy/ops/generic_ops-inl.h",
"hwy/ops/scalar-inl.h",
"hwy/ops/set_macros-inl.h",
"hwy/ops/shared-inl.h",
"hwy/ops/tuple-inl.h",
"hwy/ops/x86_128-inl.h",
"hwy/ops/x86_256-inl.h",
"hwy/ops/x86_512-inl.h",
# Select avoids recompiling native arch if only non-native changed
] + select({
":compiler_emscripten": [
"hwy/ops/wasm_128-inl.h",
"hwy/ops/wasm_256-inl.h",
],
"//conditions:default": [],
}) + select({
"@platforms//cpu:riscv64": ["hwy/ops/rvv-inl.h"],
"//conditions:default": [],
}),
)
cc_library(
name = "algo",
compatible_with = [],
copts = COPTS,
textual_hdrs = [
"hwy/contrib/algo/copy-inl.h",
"hwy/contrib/algo/find-inl.h",
"hwy/contrib/algo/transform-inl.h",
],
deps = [
":hwy",
],
)
cc_library(
name = "bit_pack",
compatible_with = [],
copts = COPTS,
textual_hdrs = [
"hwy/contrib/bit_pack/bit_pack-inl.h",
],
deps = [
":hwy",
],
)
cc_library(
name = "dot",
compatible_with = [],
copts = COPTS,
textual_hdrs = [
"hwy/contrib/dot/dot-inl.h",
],
deps = [
":hwy",
],
)
cc_library(
name = "image",
srcs = [
"hwy/contrib/image/image.cc",
],
hdrs = [
"hwy/contrib/image/image.h",
],
compatible_with = [],
copts = COPTS,
local_defines = ["hwy_contrib_EXPORTS"],
deps = [
":hwy",
],
)
cc_library(
name = "math",
compatible_with = [],
copts = COPTS,
textual_hdrs = [
"hwy/contrib/math/math-inl.h",
],
deps = [
":hwy",
],
)
# Everything required for tests that use Highway.
cc_library(
name = "hwy_test_util",
srcs = ["hwy/tests/test_util.cc"],
hdrs = ["hwy/tests/test_util.h"],
compatible_with = [],
copts = COPTS,
local_defines = ["hwy_test_EXPORTS"],
textual_hdrs = [
"hwy/tests/test_util-inl.h",
"hwy/tests/hwy_gtest.h",
],
# Must not depend on a gtest variant, which can conflict with the
# GUNIT_INTERNAL_BUILD_MODE defined by the test.
deps = [
":hwy",
],
)
cc_library(
name = "nanobenchmark",
srcs = ["hwy/nanobenchmark.cc"],
hdrs = ["hwy/nanobenchmark.h"],
compatible_with = [],
copts = COPTS,
local_defines = ["hwy_EXPORTS"],
deps = [":hwy"],
)
cc_binary(
name = "benchmark",
srcs = ["hwy/examples/benchmark.cc"],
copts = COPTS,
deps = [
":hwy",
":nanobenchmark",
],
)
cc_library(
name = "skeleton",
srcs = ["hwy/examples/skeleton.cc"],
hdrs = ["hwy/examples/skeleton.h"],
copts = COPTS,
local_defines = ["hwy_EXPORTS"],
textual_hdrs = ["hwy/examples/skeleton-inl.h"],
deps = [
":hwy",
],
)
cc_test(
name = "list_targets",
size = "small",
srcs = ["hwy/tests/list_targets.cc"],
deps = [":hwy"],
)
# path, name
HWY_TESTS = [
("hwy/contrib/algo/", "copy_test"),
("hwy/contrib/algo/", "find_test"),
("hwy/contrib/algo/", "transform_test"),
("hwy/contrib/bit_pack/", "bit_pack_test"),
("hwy/contrib/dot/", "dot_test"),
("hwy/contrib/image/", "image_test"),
("hwy/contrib/math/", "math_test"),
# contrib/sort has its own BUILD, we also add sort_test to GUITAR_TESTS.
# To run bench_sort, specify --test=hwy/contrib/sort:bench_sort.
("hwy/examples/", "skeleton_test"),
("hwy/", "nanobenchmark_test"),
("hwy/", "aligned_allocator_test"),
("hwy/", "base_test"),
("hwy/", "highway_test"),
("hwy/", "targets_test"),
("hwy/tests/", "arithmetic_test"),
("hwy/tests/", "blockwise_shift_test"),
("hwy/tests/", "blockwise_test"),
("hwy/tests/", "combine_test"),
("hwy/tests/", "compare_test"),
("hwy/tests/", "compress_test"),
("hwy/tests/", "convert_test"),
("hwy/tests/", "count_test"),
("hwy/tests/", "crypto_test"),
("hwy/tests/", "demote_test"),
("hwy/tests/", "expand_test"),
("hwy/tests/", "float_test"),
("hwy/tests/", "if_test"),
("hwy/tests/", "interleaved_test"),
("hwy/tests/", "logical_test"),
("hwy/tests/", "mask_mem_test"),
("hwy/tests/", "mask_test"),
("hwy/tests/", "memory_test"),
("hwy/tests/", "mul_test"),
("hwy/tests/", "reduction_test"),
("hwy/tests/", "reverse_test"),
("hwy/tests/", "shift_test"),
("hwy/tests/", "swizzle_test"),
("hwy/tests/", "test_util_test"),
("hwy/tests/", "tuple_test"),
]
HWY_TEST_COPTS = select({
":compiler_msvc": [],
"//conditions:default": [
# gTest triggers this warning (which is enabled by the
# extra-semi in COPTS), so we need to disable it here,
# but it's still enabled for :hwy.
"-Wno-c++98-compat-extra-semi",
],
})
HWY_TEST_DEPS = [
":algo",
":bit_pack",
":dot",
":hwy",
":hwy_test_util",
":image",
":math",
":nanobenchmark",
":skeleton",
"//hwy/contrib/sort:vqsort",
"@com_google_googletest//:gtest_main",
]
[
[
cc_test(
name = test,
size = "medium",
timeout = "long", # default moderate is not enough for math_test
srcs = [
subdir + test + ".cc",
],
copts = COPTS + HWY_TEST_COPTS,
features = select({
"@platforms//cpu:riscv64": ["fully_static_link"],
"//conditions:default": [],
}),
linkopts = select({
":compiler_emscripten": [
"-s ASSERTIONS=2",
"-s ENVIRONMENT=node,shell,web",
"-s ERROR_ON_UNDEFINED_SYMBOLS=1",
"-s DEMANGLE_SUPPORT=1",
"-s EXIT_RUNTIME=1",
"-s ALLOW_MEMORY_GROWTH=1",
"--pre-js $(location :preamble.js.lds)",
],
"//conditions:default": [],
}),
linkstatic = select({
"@platforms//cpu:riscv64": True,
"//conditions:default": False,
}),
local_defines = ["HWY_IS_TEST"],
# for test_suite.
tags = ["hwy_ops_test"],
deps = HWY_TEST_DEPS + select({
":compiler_emscripten": [":preamble.js.lds"],
"//conditions:default": [],
}),
),
]
for subdir, test in HWY_TESTS
]
# For manually building the tests we define here (:all does not work in --config=msvc)
test_suite(
name = "hwy_ops_tests",
tags = ["hwy_ops_test"],
)
# Placeholder for integration test, do not remove