477 lines
19 KiB
Python
477 lines
19 KiB
Python
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# Code common to build tools
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import copy
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import pathlib
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import sys
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import textwrap
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from numpy.distutils.misc_util import mingw32
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#-------------------
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# Versioning support
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#-------------------
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# How to change C_API_VERSION ?
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# - increase C_API_VERSION value
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# - record the hash for the new C API with the cversions.py script
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# and add the hash to cversions.txt
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# The hash values are used to remind developers when the C API number was not
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# updated - generates a MismatchCAPIWarning warning which is turned into an
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# exception for released version.
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# Binary compatibility version number. This number is increased whenever the
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# C-API is changed such that binary compatibility is broken, i.e. whenever a
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# recompile of extension modules is needed.
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C_ABI_VERSION = 0x01000009
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# Minor API version. This number is increased whenever a change is made to the
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# C-API -- whether it breaks binary compatibility or not. Some changes, such
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# as adding a function pointer to the end of the function table, can be made
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# without breaking binary compatibility. In this case, only the C_API_VERSION
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# (*not* C_ABI_VERSION) would be increased. Whenever binary compatibility is
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# broken, both C_API_VERSION and C_ABI_VERSION should be increased.
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#
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# The version needs to be kept in sync with that in cversions.txt.
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#
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# 0x00000008 - 1.7.x
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# 0x00000009 - 1.8.x
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# 0x00000009 - 1.9.x
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# 0x0000000a - 1.10.x
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# 0x0000000a - 1.11.x
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# 0x0000000a - 1.12.x
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# 0x0000000b - 1.13.x
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# 0x0000000c - 1.14.x
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# 0x0000000c - 1.15.x
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# 0x0000000d - 1.16.x
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# 0x0000000d - 1.19.x
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# 0x0000000e - 1.20.x
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# 0x0000000e - 1.21.x
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# 0x0000000f - 1.22.x
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# 0x00000010 - 1.23.x
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# 0x00000010 - 1.24.x
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C_API_VERSION = 0x00000010
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class MismatchCAPIError(ValueError):
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pass
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def get_api_versions(apiversion, codegen_dir):
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"""
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Return current C API checksum and the recorded checksum.
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Return current C API checksum and the recorded checksum for the given
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version of the C API version.
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"""
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# Compute the hash of the current API as defined in the .txt files in
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# code_generators
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sys.path.insert(0, codegen_dir)
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try:
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m = __import__('genapi')
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numpy_api = __import__('numpy_api')
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curapi_hash = m.fullapi_hash(numpy_api.full_api)
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apis_hash = m.get_versions_hash()
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finally:
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del sys.path[0]
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return curapi_hash, apis_hash[apiversion]
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def check_api_version(apiversion, codegen_dir):
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"""Emits a MismatchCAPIWarning if the C API version needs updating."""
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curapi_hash, api_hash = get_api_versions(apiversion, codegen_dir)
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# If different hash, it means that the api .txt files in
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# codegen_dir have been updated without the API version being
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# updated. Any modification in those .txt files should be reflected
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# in the api and eventually abi versions.
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# To compute the checksum of the current API, use numpy/core/cversions.py
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if not curapi_hash == api_hash:
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msg = ("API mismatch detected, the C API version "
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"numbers have to be updated. Current C api version is "
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f"{apiversion}, with checksum {curapi_hash}, but recorded "
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f"checksum in core/codegen_dir/cversions.txt is {api_hash}. If "
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"functions were added in the C API, you have to update "
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f"C_API_VERSION in {__file__}."
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)
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raise MismatchCAPIError(msg)
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FUNC_CALL_ARGS = {}
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def set_sig(sig):
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prefix, _, args = sig.partition("(")
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args = args.rpartition(")")[0]
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funcname = prefix.rpartition(" ")[-1]
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args = [arg.strip() for arg in args.split(",")]
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# We use {0} because 0 alone cannot be cast to complex on MSVC in C:
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FUNC_CALL_ARGS[funcname] = ", ".join("(%s){0}" % arg for arg in args)
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for file in [
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"feature_detection_locale.h",
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"feature_detection_math.h",
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"feature_detection_cmath.h",
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"feature_detection_misc.h",
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"feature_detection_stdio.h",
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]:
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with open(pathlib.Path(__file__).parent / file) as f:
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for line in f:
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if line.startswith("#"):
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continue
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if not line.strip():
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continue
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set_sig(line)
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# Mandatory functions: if not found, fail the build
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# Some of these can still be blocklisted if the C99 implementation
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# is buggy, see numpy/core/src/common/npy_config.h
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MANDATORY_FUNCS = [
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"sin", "cos", "tan", "sinh", "cosh", "tanh", "fabs",
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"floor", "ceil", "sqrt", "log10", "log", "exp", "asin",
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"acos", "atan", "fmod", 'modf', 'frexp', 'ldexp',
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"expm1", "log1p", "acosh", "asinh", "atanh",
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"rint", "trunc", "exp2",
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"copysign", "nextafter", "strtoll", "strtoull", "cbrt",
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"log2", "pow", "hypot", "atan2",
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"creal", "cimag", "conj"
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]
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OPTIONAL_LOCALE_FUNCS = ["strtold_l"]
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OPTIONAL_FILE_FUNCS = ["ftello", "fseeko", "fallocate"]
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OPTIONAL_MISC_FUNCS = ["backtrace", "madvise"]
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# variable attributes tested via "int %s a" % attribute
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OPTIONAL_VARIABLE_ATTRIBUTES = ["__thread", "__declspec(thread)"]
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# Subset of OPTIONAL_*_FUNCS which may already have HAVE_* defined by Python.h
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OPTIONAL_FUNCS_MAYBE = [
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"ftello", "fseeko"
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]
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C99_COMPLEX_TYPES = [
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'complex double', 'complex float', 'complex long double'
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]
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C99_COMPLEX_FUNCS = [
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"cabs", "cacos", "cacosh", "carg", "casin", "casinh", "catan",
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"catanh", "cexp", "clog", "cpow", "csqrt",
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# The long double variants (like csinl) should be mandatory on C11,
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# but are missing in FreeBSD. Issue gh-22850
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"csin", "csinh", "ccos", "ccosh", "ctan", "ctanh",
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]
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OPTIONAL_HEADERS = [
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# sse headers only enabled automatically on amd64/x32 builds
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"xmmintrin.h", # SSE
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"emmintrin.h", # SSE2
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"immintrin.h", # AVX
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"features.h", # for glibc version linux
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"xlocale.h", # see GH#8367
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"dlfcn.h", # dladdr
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"execinfo.h", # backtrace
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"libunwind.h", # backtrace for LLVM/Clang using libunwind
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"sys/mman.h", #madvise
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]
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# optional gcc compiler builtins and their call arguments and optional a
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# required header and definition name (HAVE_ prepended)
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# call arguments are required as the compiler will do strict signature checking
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OPTIONAL_INTRINSICS = [("__builtin_isnan", '5.'),
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("__builtin_isinf", '5.'),
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("__builtin_isfinite", '5.'),
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("__builtin_bswap32", '5u'),
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("__builtin_bswap64", '5u'),
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("__builtin_expect", '5, 0'),
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# Test `long long` for arm+clang 13 (gh-22811,
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# but we use all versions of __builtin_mul_overflow):
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("__builtin_mul_overflow", '(long long)5, 5, (int*)5'),
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# MMX only needed for icc, but some clangs don't have it
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("_m_from_int64", '0', "emmintrin.h"),
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("_mm_load_ps", '(float*)0', "xmmintrin.h"), # SSE
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("_mm_prefetch", '(float*)0, _MM_HINT_NTA',
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"xmmintrin.h"), # SSE
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("_mm_load_pd", '(double*)0', "emmintrin.h"), # SSE2
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("__builtin_prefetch", "(float*)0, 0, 3"),
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# check that the linker can handle avx
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("__asm__ volatile", '"vpand %xmm1, %xmm2, %xmm3"',
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"stdio.h", "LINK_AVX"),
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("__asm__ volatile", '"vpand %ymm1, %ymm2, %ymm3"',
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"stdio.h", "LINK_AVX2"),
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("__asm__ volatile", '"vpaddd %zmm1, %zmm2, %zmm3"',
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"stdio.h", "LINK_AVX512F"),
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("__asm__ volatile", '"vfpclasspd $0x40, %zmm15, %k6\\n"\
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"vmovdqu8 %xmm0, %xmm1\\n"\
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"vpbroadcastmb2q %k0, %xmm0\\n"',
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"stdio.h", "LINK_AVX512_SKX"),
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("__asm__ volatile", '"xgetbv"', "stdio.h", "XGETBV"),
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]
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# function attributes
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# tested via "int %s %s(void *);" % (attribute, name)
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# function name will be converted to HAVE_<upper-case-name> preprocessor macro
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OPTIONAL_FUNCTION_ATTRIBUTES = [('__attribute__((optimize("unroll-loops")))',
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'attribute_optimize_unroll_loops'),
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('__attribute__((optimize("O3")))',
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'attribute_optimize_opt_3'),
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('__attribute__((optimize("O2")))',
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'attribute_optimize_opt_2'),
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('__attribute__((nonnull (1)))',
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'attribute_nonnull'),
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]
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OPTIONAL_FUNCTION_ATTRIBUTES_AVX = [('__attribute__((target ("avx")))',
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'attribute_target_avx'),
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('__attribute__((target ("avx2")))',
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'attribute_target_avx2'),
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('__attribute__((target ("avx512f")))',
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'attribute_target_avx512f'),
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('__attribute__((target ("avx512f,avx512dq,avx512bw,avx512vl,avx512cd")))',
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'attribute_target_avx512_skx'),
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]
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# function attributes with intrinsics
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# To ensure your compiler can compile avx intrinsics with just the attributes
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# gcc 4.8.4 support attributes but not with intrisics
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# tested via "#include<%s> int %s %s(void *){code; return 0;};" % (header, attribute, name, code)
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# function name will be converted to HAVE_<upper-case-name> preprocessor macro
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# The _mm512_castps_si512 instruction is specific check for AVX-512F support
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# in gcc-4.9 which is missing a subset of intrinsics. See
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# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61878
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OPTIONAL_FUNCTION_ATTRIBUTES_WITH_INTRINSICS_AVX = [
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('__attribute__((target("avx2,fma")))',
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'attribute_target_avx2_with_intrinsics',
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'__m256 temp = _mm256_set1_ps(1.0); temp = \
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_mm256_fmadd_ps(temp, temp, temp)',
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'immintrin.h'),
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('__attribute__((target("avx512f")))',
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'attribute_target_avx512f_with_intrinsics',
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'__m512i temp = _mm512_castps_si512(_mm512_set1_ps(1.0))',
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'immintrin.h'),
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('__attribute__((target ("avx512f,avx512dq,avx512bw,avx512vl,avx512cd")))',
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'attribute_target_avx512_skx_with_intrinsics',
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'__mmask8 temp = _mm512_fpclass_pd_mask(_mm512_set1_pd(1.0), 0x01);\
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__m512i unused_temp = \
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_mm512_castps_si512(_mm512_set1_ps(1.0));\
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_mm_mask_storeu_epi8(NULL, 0xFF, _mm_broadcastmb_epi64(temp))',
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'immintrin.h'),
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]
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def fname2def(name):
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return "HAVE_%s" % name.upper()
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def sym2def(symbol):
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define = symbol.replace(' ', '')
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return define.upper()
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def type2def(symbol):
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define = symbol.replace(' ', '_')
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return define.upper()
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# Code to detect long double representation taken from MPFR m4 macro
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def check_long_double_representation(cmd):
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cmd._check_compiler()
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body = LONG_DOUBLE_REPRESENTATION_SRC % {'type': 'long double'}
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# Disable whole program optimization (the default on vs2015, with python 3.5+)
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# which generates intermediary object files and prevents checking the
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# float representation.
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if sys.platform == "win32" and not mingw32():
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try:
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cmd.compiler.compile_options.remove("/GL")
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except (AttributeError, ValueError):
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pass
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# Disable multi-file interprocedural optimization in the Intel compiler on Linux
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# which generates intermediary object files and prevents checking the
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# float representation.
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elif (sys.platform != "win32"
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and cmd.compiler.compiler_type.startswith('intel')
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and '-ipo' in cmd.compiler.cc_exe):
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newcompiler = cmd.compiler.cc_exe.replace(' -ipo', '')
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cmd.compiler.set_executables(
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compiler=newcompiler,
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compiler_so=newcompiler,
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compiler_cxx=newcompiler,
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linker_exe=newcompiler,
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linker_so=newcompiler + ' -shared'
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)
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# We need to use _compile because we need the object filename
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src, obj = cmd._compile(body, None, None, 'c')
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try:
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ltype = long_double_representation(pyod(obj))
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return ltype
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except ValueError:
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# try linking to support CC="gcc -flto" or icc -ipo
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# struct needs to be volatile so it isn't optimized away
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# additionally "clang -flto" requires the foo struct to be used
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body = body.replace('struct', 'volatile struct')
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body += "int main(void) { return foo.before[0]; }\n"
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src, obj = cmd._compile(body, None, None, 'c')
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cmd.temp_files.append("_configtest")
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cmd.compiler.link_executable([obj], "_configtest")
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ltype = long_double_representation(pyod("_configtest"))
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return ltype
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finally:
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cmd._clean()
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LONG_DOUBLE_REPRESENTATION_SRC = r"""
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/* "before" is 16 bytes to ensure there's no padding between it and "x".
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* We're not expecting any "long double" bigger than 16 bytes or with
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* alignment requirements stricter than 16 bytes. */
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typedef %(type)s test_type;
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struct {
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char before[16];
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test_type x;
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char after[8];
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} foo = {
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{ '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0',
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'\001', '\043', '\105', '\147', '\211', '\253', '\315', '\357' },
|
||
|
|
-123456789.0,
|
||
|
|
{ '\376', '\334', '\272', '\230', '\166', '\124', '\062', '\020' }
|
||
|
|
};
|
||
|
|
"""
|
||
|
|
|
||
|
|
def pyod(filename):
|
||
|
|
"""Python implementation of the od UNIX utility (od -b, more exactly).
|
||
|
|
|
||
|
|
Parameters
|
||
|
|
----------
|
||
|
|
filename : str
|
||
|
|
name of the file to get the dump from.
|
||
|
|
|
||
|
|
Returns
|
||
|
|
-------
|
||
|
|
out : seq
|
||
|
|
list of lines of od output
|
||
|
|
|
||
|
|
Notes
|
||
|
|
-----
|
||
|
|
We only implement enough to get the necessary information for long double
|
||
|
|
representation, this is not intended as a compatible replacement for od.
|
||
|
|
"""
|
||
|
|
out = []
|
||
|
|
with open(filename, 'rb') as fid:
|
||
|
|
yo2 = [oct(o)[2:] for o in fid.read()]
|
||
|
|
for i in range(0, len(yo2), 16):
|
||
|
|
line = ['%07d' % int(oct(i)[2:])]
|
||
|
|
line.extend(['%03d' % int(c) for c in yo2[i:i+16]])
|
||
|
|
out.append(" ".join(line))
|
||
|
|
return out
|
||
|
|
|
||
|
|
|
||
|
|
_BEFORE_SEQ = ['000', '000', '000', '000', '000', '000', '000', '000',
|
||
|
|
'001', '043', '105', '147', '211', '253', '315', '357']
|
||
|
|
_AFTER_SEQ = ['376', '334', '272', '230', '166', '124', '062', '020']
|
||
|
|
|
||
|
|
_IEEE_DOUBLE_BE = ['301', '235', '157', '064', '124', '000', '000', '000']
|
||
|
|
_IEEE_DOUBLE_LE = _IEEE_DOUBLE_BE[::-1]
|
||
|
|
_INTEL_EXTENDED_12B = ['000', '000', '000', '000', '240', '242', '171', '353',
|
||
|
|
'031', '300', '000', '000']
|
||
|
|
_INTEL_EXTENDED_16B = ['000', '000', '000', '000', '240', '242', '171', '353',
|
||
|
|
'031', '300', '000', '000', '000', '000', '000', '000']
|
||
|
|
_MOTOROLA_EXTENDED_12B = ['300', '031', '000', '000', '353', '171',
|
||
|
|
'242', '240', '000', '000', '000', '000']
|
||
|
|
_IEEE_QUAD_PREC_BE = ['300', '031', '326', '363', '105', '100', '000', '000',
|
||
|
|
'000', '000', '000', '000', '000', '000', '000', '000']
|
||
|
|
_IEEE_QUAD_PREC_LE = _IEEE_QUAD_PREC_BE[::-1]
|
||
|
|
_IBM_DOUBLE_DOUBLE_BE = (['301', '235', '157', '064', '124', '000', '000', '000'] +
|
||
|
|
['000'] * 8)
|
||
|
|
_IBM_DOUBLE_DOUBLE_LE = (['000', '000', '000', '124', '064', '157', '235', '301'] +
|
||
|
|
['000'] * 8)
|
||
|
|
|
||
|
|
def long_double_representation(lines):
|
||
|
|
"""Given a binary dump as given by GNU od -b, look for long double
|
||
|
|
representation."""
|
||
|
|
|
||
|
|
# Read contains a list of 32 items, each item is a byte (in octal
|
||
|
|
# representation, as a string). We 'slide' over the output until read is of
|
||
|
|
# the form before_seq + content + after_sequence, where content is the long double
|
||
|
|
# representation:
|
||
|
|
# - content is 12 bytes: 80 bits Intel representation
|
||
|
|
# - content is 16 bytes: 80 bits Intel representation (64 bits) or quad precision
|
||
|
|
# - content is 8 bytes: same as double (not implemented yet)
|
||
|
|
read = [''] * 32
|
||
|
|
saw = None
|
||
|
|
for line in lines:
|
||
|
|
# we skip the first word, as od -b output an index at the beginning of
|
||
|
|
# each line
|
||
|
|
for w in line.split()[1:]:
|
||
|
|
read.pop(0)
|
||
|
|
read.append(w)
|
||
|
|
|
||
|
|
# If the end of read is equal to the after_sequence, read contains
|
||
|
|
# the long double
|
||
|
|
if read[-8:] == _AFTER_SEQ:
|
||
|
|
saw = copy.copy(read)
|
||
|
|
# if the content was 12 bytes, we only have 32 - 8 - 12 = 12
|
||
|
|
# "before" bytes. In other words the first 4 "before" bytes went
|
||
|
|
# past the sliding window.
|
||
|
|
if read[:12] == _BEFORE_SEQ[4:]:
|
||
|
|
if read[12:-8] == _INTEL_EXTENDED_12B:
|
||
|
|
return 'INTEL_EXTENDED_12_BYTES_LE'
|
||
|
|
if read[12:-8] == _MOTOROLA_EXTENDED_12B:
|
||
|
|
return 'MOTOROLA_EXTENDED_12_BYTES_BE'
|
||
|
|
# if the content was 16 bytes, we are left with 32-8-16 = 16
|
||
|
|
# "before" bytes, so 8 went past the sliding window.
|
||
|
|
elif read[:8] == _BEFORE_SEQ[8:]:
|
||
|
|
if read[8:-8] == _INTEL_EXTENDED_16B:
|
||
|
|
return 'INTEL_EXTENDED_16_BYTES_LE'
|
||
|
|
elif read[8:-8] == _IEEE_QUAD_PREC_BE:
|
||
|
|
return 'IEEE_QUAD_BE'
|
||
|
|
elif read[8:-8] == _IEEE_QUAD_PREC_LE:
|
||
|
|
return 'IEEE_QUAD_LE'
|
||
|
|
elif read[8:-8] == _IBM_DOUBLE_DOUBLE_LE:
|
||
|
|
return 'IBM_DOUBLE_DOUBLE_LE'
|
||
|
|
elif read[8:-8] == _IBM_DOUBLE_DOUBLE_BE:
|
||
|
|
return 'IBM_DOUBLE_DOUBLE_BE'
|
||
|
|
# if the content was 8 bytes, left with 32-8-8 = 16 bytes
|
||
|
|
elif read[:16] == _BEFORE_SEQ:
|
||
|
|
if read[16:-8] == _IEEE_DOUBLE_LE:
|
||
|
|
return 'IEEE_DOUBLE_LE'
|
||
|
|
elif read[16:-8] == _IEEE_DOUBLE_BE:
|
||
|
|
return 'IEEE_DOUBLE_BE'
|
||
|
|
|
||
|
|
if saw is not None:
|
||
|
|
raise ValueError("Unrecognized format (%s)" % saw)
|
||
|
|
else:
|
||
|
|
# We never detected the after_sequence
|
||
|
|
raise ValueError("Could not lock sequences (%s)" % saw)
|
||
|
|
|
||
|
|
|
||
|
|
def check_for_right_shift_internal_compiler_error(cmd):
|
||
|
|
"""
|
||
|
|
On our arm CI, this fails with an internal compilation error
|
||
|
|
|
||
|
|
The failure looks like the following, and can be reproduced on ARM64 GCC 5.4:
|
||
|
|
|
||
|
|
<source>: In function 'right_shift':
|
||
|
|
<source>:4:20: internal compiler error: in expand_shift_1, at expmed.c:2349
|
||
|
|
ip1[i] = ip1[i] >> in2;
|
||
|
|
^
|
||
|
|
Please submit a full bug report,
|
||
|
|
with preprocessed source if appropriate.
|
||
|
|
See <http://gcc.gnu.org/bugs.html> for instructions.
|
||
|
|
Compiler returned: 1
|
||
|
|
|
||
|
|
This function returns True if this compiler bug is present, and we need to
|
||
|
|
turn off optimization for the function
|
||
|
|
"""
|
||
|
|
cmd._check_compiler()
|
||
|
|
has_optimize = cmd.try_compile(textwrap.dedent("""\
|
||
|
|
__attribute__((optimize("O3"))) void right_shift() {}
|
||
|
|
"""), None, None)
|
||
|
|
if not has_optimize:
|
||
|
|
return False
|
||
|
|
|
||
|
|
no_err = cmd.try_compile(textwrap.dedent("""\
|
||
|
|
typedef long the_type; /* fails also for unsigned and long long */
|
||
|
|
__attribute__((optimize("O3"))) void right_shift(the_type in2, the_type *ip1, int n) {
|
||
|
|
for (int i = 0; i < n; i++) {
|
||
|
|
if (in2 < (the_type)sizeof(the_type) * 8) {
|
||
|
|
ip1[i] = ip1[i] >> in2;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
"""), None, None)
|
||
|
|
return not no_err
|