Current File : //lib64/python3.9/site-packages/numpy/distutils/__pycache__/ccompiler_opt.cpython-39.opt-1.pyc
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ee�Zdd� ZdS )a Provides the `CCompilerOpt` class, used for handling the CPU/hardware
optimization, starting from parsing the command arguments, to managing the
relation between the CPU baseline and dispatch-able features,
also generating the required C headers and ending with compiling
the sources with proper compiler's flags.
`CCompilerOpt` doesn't provide runtime detection for the CPU features,
instead only focuses on the compiler side, but it creates abstract C headers
that can be used later for the final runtime dispatching process.� N)z
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these class attributes can be used to change the default behavior
of `CCompilerOpt` in order to fit other requirements.
Attributes
----------
conf_nocache : bool
Set True to disable memory and file cache.
Default is False.
conf_noopt : bool
Set True to forces the optimization to be disabled,
in this case `CCompilerOpt` tends to generate all
expected headers in order to 'not' break the build.
Default is False.
conf_cache_factors : list
Add extra factors to the primary caching factors. The caching factors
are utilized to determine if there are changes had happened that
requires to discard the cache and re-updating it. The primary factors
are the arguments of `CCompilerOpt` and `CCompiler`'s properties(type, flags, etc).
Default is list of two items, containing the time of last modification
of `ccompiler_opt` and value of attribute "conf_noopt"
conf_tmp_path : str,
The path of temporary directory. Default is auto-created
temporary directory via ``tempfile.mkdtemp()``.
conf_check_path : str
The path of testing files. Each added CPU feature must have a
**C** source file contains at least one intrinsic or instruction that
related to this feature, so it can be tested against the compiler.
Default is ``./distutils/checks``.
conf_target_groups : dict
Extra tokens that can be reached from dispatch-able sources through
the special mark ``@targets``. Default is an empty dictionary.
**Notes**:
- case-insensitive for tokens and group names
- sign '#' must stick in the begin of group name and only within ``@targets``
**Example**:
.. code-block:: console
$ "@targets #avx_group other_tokens" > group_inside.c
>>> CCompilerOpt.conf_target_groups["avx_group"] = \
"$werror $maxopt avx2 avx512f avx512_skx"
>>> cco = CCompilerOpt(cc_instance)
>>> cco.try_dispatch(["group_inside.c"])
conf_c_prefix : str
The prefix of public C definitions. Default is ``"NPY_"``.
conf_c_prefix_ : str
The prefix of internal C definitions. Default is ``"NPY__"``.
conf_cc_flags : dict
Nested dictionaries defining several compiler flags
that linked to some major functions, the main key
represent the compiler name and sub-keys represent
flags names. Default is already covers all supported
**C** compilers.
Sub-keys explained as follows:
"native": str or None
used by argument option `native`, to detect the current
machine support via the compiler.
"werror": str or None
utilized to treat warning as errors during testing CPU features
against the compiler and also for target's policy `$werror`
via dispatch-able sources.
"maxopt": str or None
utilized for target's policy '$maxopt' and the value should
contains the maximum acceptable optimization by the compiler.
e.g. in gcc `'-O3'`
**Notes**:
* case-sensitive for compiler names and flags
* use space to separate multiple flags
* any flag will tested against the compiler and it will skipped
if it's not applicable.
conf_min_features : dict
A dictionary defines the used CPU features for
argument option `'min'`, the key represent the CPU architecture
name e.g. `'x86'`. Default values provide the best effort
on wide range of users platforms.
**Note**: case-sensitive for architecture names.
conf_features : dict
Nested dictionaries used for identifying the CPU features.
the primary key is represented as a feature name or group name
that gathers several features. Default values covers all
supported features but without the major options like "flags",
these undefined options handle it by method `conf_features_partial()`.
Default value is covers almost all CPU features for *X86*, *IBM/Power64*
and *ARM 7/8*.
Sub-keys explained as follows:
"implies" : str or list, optional,
List of CPU feature names to be implied by it,
the feature name must be defined within `conf_features`.
Default is None.
"flags": str or list, optional
List of compiler flags. Default is None.
"detect": str or list, optional
List of CPU feature names that required to be detected
in runtime. By default, its the feature name or features
in "group" if its specified.
"implies_detect": bool, optional
If True, all "detect" of implied features will be combined.
Default is True. see `feature_detect()`.
"group": str or list, optional
Same as "implies" but doesn't require the feature name to be
defined within `conf_features`.
"interest": int, required
a key for sorting CPU features
"headers": str or list, optional
intrinsics C header file
"disable": str, optional
force disable feature, the string value should contains the
reason of disabling.
"autovec": bool or None, optional
True or False to declare that CPU feature can be auto-vectorized
by the compiler.
By default(None), treated as True if the feature contains at
least one applicable flag. see `feature_can_autovec()`
"extra_checks": str or list, optional
Extra test case names for the CPU feature that need to be tested
against the compiler.
Each test case must have a C file named ``extra_xxxx.c``, where
``xxxx`` is the case name in lower case, under 'conf_check_path'.
It should contain at least one intrinsic or function related to the test case.
If the compiler able to successfully compile the C file then `CCompilerOpt`
will add a C ``#define`` for it into the main dispatch header, e.g.
``#define {conf_c_prefix}_XXXX`` where ``XXXX`` is the case name in upper case.
**NOTES**:
* space can be used as separator with options that supports "str or list"
* case-sensitive for all values and feature name must be in upper-case.
* if flags aren't applicable, its will skipped rather than disable the
CPU feature
* the CPU feature will disabled if the compiler fail to compile
the test file
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ccompiler : `CCompiler`
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_CCompilera2 A helper class for `CCompilerOpt` containing all utilities that
related to the fundamental compiler's functions.
Attributes
----------
cc_on_x86 : bool
True when the target architecture is 32-bit x86
cc_on_x64 : bool
True when the target architecture is 64-bit x86
cc_on_ppc64 : bool
True when the target architecture is 64-bit big-endian powerpc
cc_on_ppc64le : bool
True when the target architecture is 64-bit litle-endian powerpc
cc_on_s390x : bool
True when the target architecture is IBM/ZARCH on linux
cc_on_armhf : bool
True when the target architecture is 32-bit ARMv7+
cc_on_aarch64 : bool
True when the target architecture is 64-bit Armv8-a+
cc_on_noarch : bool
True when the target architecture is unknown or not supported
cc_is_gcc : bool
True if the compiler is GNU or
if the compiler is unknown
cc_is_clang : bool
True if the compiler is Clang
cc_is_icc : bool
True if the compiler is Intel compiler (unix like)
cc_is_iccw : bool
True if the compiler is Intel compiler (msvc like)
cc_is_nocc : bool
True if the compiler isn't supported directly,
Note: that cause a fail-back to gcc
cc_has_debug : bool
True if the compiler has debug flags
cc_has_native : bool
True if the compiler has native flags
cc_noopt : bool
True if the compiler has definition 'DISABLE_OPT*',
or 'cc_on_noarch' is True
cc_march : str
The target architecture name, or "unknown" if
the architecture isn't supported
cc_name : str
The compiler name, or "unknown" if the compiler isn't supported
cc_flags : dict
Dictionary containing the initialized flags of `_Config.conf_cc_flags`
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Remove the conflicts that caused due gathering implied features flags.
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'flags' list, compiler flags
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list, filtered from any conflicts.
Examples
--------
>>> self.cc_normalize_flags(['-march=armv8.2-a+fp16', '-march=armv8.2-a+dotprod'])
['armv8.2-a+fp16+dotprod']
>>> self.cc_normalize_flags(
['-msse', '-msse2', '-msse3', '-mssse3', '-msse4.1', '-msse4.2', '-mavx', '-march=core-avx2']
)
['-march=core-avx2']
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Attributes
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feature_supported : dict
Dictionary containing all CPU features that supported
by the platform, according to the specified values in attribute
`_Config.conf_features` and `_Config.conf_features_partial()`
feature_min : set
The minimum support of CPU features, according to
the specified values in attribute `_Config.conf_min_features`.
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Returns a set of CPU feature names that supported by platform and the **C** compiler.
Parameters
----------
names : sequence or None, optional
Specify certain CPU features to test it against the **C** compiler.
if None(default), it will test all current supported features.
**Note**: feature names must be in upper-case.
force_flags : list or None, optional
If None(default), default compiler flags for every CPU feature will
be used during the test.
macros : list of tuples, optional
A list of C macro definitions.
N�� force_flagsr� )r= r� r� �feature_is_supportedr0 )rc �namesrE r� Zsupported_namesr� re re rf �
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feature name in uppercase.
)r� )rc r� re re rf �feature_is_exist s z_Feature.feature_is_existFc s � fdd�}t |||d�S )az
Sort a list of CPU features ordered by the lowest interest.
Parameters
----------
'names': sequence
sequence of supported feature names in uppercase.
'reverse': bool, optional
If true, the sorted features is reversed. (highest interest)
Returns
-------
list, sorted CPU features
c sB t | t�r� j| d S t� fdd�| D ��}|t| �d 7 }|S )Nr c s g | ]}� j | d �qS )r )r= �r� r� r& re rf r� 0 � z<_Feature.feature_sorted.<locals>.sort_cb.<locals>.<listcomp>r )r� r� r= �maxr� )r8 Zrankr& re rf �sort_cb, s
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Return a set of CPU features that implied by 'names'
Parameters
----------
names : str or sequence of str
CPU feature name(s) in uppercase.
keep_origins : bool
if False(default) then the returned set will not contain any
features from 'names'. This case happens only when two features
imply each other.
Examples
--------
>>> self.feature_implies("SSE3")
{'SSE', 'SSE2'}
>>> self.feature_implies("SSE2")
{'SSE'}
>>> self.feature_implies("SSE2", keep_origins=True)
# 'SSE2' found here since 'SSE' and 'SSE2' imply each other
{'SSE', 'SSE2'}
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z_Feature.feature_implies_cc sF | j |dd�� � fdd�|D �}t|�dkrB| j|dd�dd� }|S ) a
Return list of features in 'names' after remove any
implied features and keep the origins.
Parameters
----------
'names': sequence
sequence of CPU feature names in uppercase.
Returns
-------
list of CPU features sorted as-is 'names'
Examples
--------
>>> self.feature_ahead(["SSE2", "SSE3", "SSE41"])
["SSE41"]
# assume AVX2 and FMA3 implies each other and AVX2
# is the highest interest
>>> self.feature_ahead(["SSE2", "SSE3", "SSE41", "AVX2", "FMA3"])
["AVX2"]
# assume AVX2 and FMA3 don't implies each other
>>> self.feature_ahead(["SSE2", "SSE3", "SSE41", "AVX2", "FMA3"])
["AVX2", "FMA3"]
T)rV c s g | ]}|� vr|�qS re re )r� rW �r re rf r� � rK z*_Feature.feature_ahead.<locals>.<listcomp>r �rN Nr )rX r� rQ )rc rG Zaheadre rZ rf �
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same as 'feature_ahead()' but if both features implied each other
and keep the highest interest.
Parameters
----------
'names': sequence
sequence of CPU feature names in uppercase.
Returns
-------
list of CPU features sorted as-is 'names'
Examples
--------
>>> self.feature_untied(["SSE2", "SSE3", "SSE41"])
["SSE2", "SSE3", "SSE41"]
# assume AVX2 and FMA3 implies each other
>>> self.feature_untied(["SSE2", "SSE3", "SSE41", "FMA3", "AVX2"])
["SSE2", "SSE3", "SSE41", "AVX2"]
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same as `feature_implies_c()` but stop collecting implied
features when feature's option that provided through
parameter 'keyisfalse' is False, also sorting the returned
features.
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z_Feature.feature_get_tilc C sB | � |d�}g }|D ](}| j| }||�d|�d|g��7 }q|S )z�
Return a list of CPU features that required to be detected
sorted from the lowest to highest interest.
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z_Feature.feature_detectc C sV | � | �|��}g }|D ]2}| j| }|�dg �}|r| �|�sBq||7 }q| �|�S )zi
Return a list of CPU features flags sorted from the lowest
to highest interest.
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Test a certain CPU feature against the compiler through its own
check file.
Parameters
----------
name : str
Supported CPU feature name.
force_flags : list or None, optional
If None(default), the returned flags from `feature_flags()`
will be used.
macros : list of tuples, optional
A list of C macro definitions.
Nz$testing feature '%s' with flags (%s)r� zcpu_%s.cz feature test file is not existr �r� r Tr� ) rh r� r rt ru r� �lowerr� r� r� r )rc r� rE r� r r� re re rf � feature_test� s$
��� �z_Feature.feature_testc C sL || j v }|rH| �|�D ]}| j|||d�s dS q| j|||d�sHdS |S )a�
Check if a certain CPU feature is supported by the platform and compiler.
Parameters
----------
name : str
CPU feature name in uppercase.
force_flags : list or None, optional
If None(default), default compiler flags for every CPU feature will
be used during test.
macros : list of tuples, optional
A list of C macro definitions.
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check if the feature can be auto-vectorized by the compiler
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CPU feature name in uppercase.
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Generate C preprocessor definitions and include headers of a CPU feature.
Parameters
----------
'feature_name': str
CPU feature name in uppercase.
'tabs': int
if > 0, align the generated strings to the right depend on number of tabs.
Returns
-------
str, generated C preprocessor
Examples
--------
>>> self.feature_c_preprocessor("SSE3")
/** SSE3 **/
#define NPY_HAVE_SSE3 1
#include <pmmintrin.h>
z
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Parameters
----------
cpu_baseline : str or None
minimal set of required CPU features or special options.
cpu_dispatch : str or None
dispatched set of additional CPU features or special options.
Special options can be:
- **MIN**: Enables the minimum CPU features that utilized via `_Config.conf_min_features`
- **MAX**: Enables all supported CPU features by the Compiler and platform.
- **NATIVE**: Enables all CPU features that supported by the current machine.
- **NONE**: Enables nothing
- **Operand +/-**: remove or add features, useful with options **MAX**, **MIN** and **NATIVE**.
NOTE: operand + is only added for nominal reason.
NOTES:
- Case-insensitive among all CPU features and special options.
- Comma or space can be used as a separator.
- If the CPU feature is not supported by the user platform or compiler,
it will be skipped rather than raising a fatal error.
- Any specified CPU features to 'cpu_dispatch' will be skipped if its part of CPU baseline features
- 'cpu_baseline' force enables implied features.
Attributes
----------
parse_baseline_names : list
Final CPU baseline's feature names(sorted from low to high)
parse_baseline_flags : list
Compiler flags of baseline features
parse_dispatch_names : list
Final CPU dispatch-able feature names(sorted from low to high)
parse_target_groups : dict
Dictionary containing initialized target groups that configured
through class attribute `conf_target_groups`.
The key is represent the group name and value is a tuple
contains three items :
- bool, True if group has the 'baseline' option.
- list, list of CPU features.
- list, list of extra compiler flags.
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Fetch and parse configuration statements that required for
defining the targeted CPU features, statements should be declared
in the top of source in between **C** comment and start
with a special mark **@targets**.
Configuration statements are sort of keywords representing
CPU features names, group of statements and policies, combined
together to determine the required optimization.
Parameters
----------
source : str
the path of **C** source file.
Returns
-------
- bool, True if group has the 'baseline' option
- list, list of CPU features
- list, list of extra compiler flags
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Parameters
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sources : list
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src_dir : str
Path of parent directory for the generated headers and wrapped sources.
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ccompiler : CCompiler
Distutils `CCompiler` instance to be used for compilation.
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**kwargs : any
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Returns
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Raises
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CompileError
Raises by `CCompiler.compile()` on compiling failure.
DistutilsError
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See Also
--------
parse_targets :
Parsing the configuration statements of dispatch-able sources.
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#define {pfx}WITH_CPU_BASELINE "{baseline_str}"
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#define {pfx}WITH_CPU_BASELINE_N {baseline_len}
#define {pfx}WITH_CPU_DISPATCH_N {dispatch_len}
#define {pfx}WITH_CPU_EXPAND_(X) X
#define {pfx}WITH_CPU_BASELINE_CALL(MACRO_TO_CALL, ...) \
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#ifndef {pfx}CPU_DISPATCH_EXPAND_
#define {pfx}CPU_DISPATCH_EXPAND_(X) X
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#undef {pfx}CPU_DISPATCH_CALL
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