def run(source_yaml: str, output_dir: str, dry_run: bool,
impl_path: Optional[str]) -> None:
# Assumes that this file lives at PYTORCH_ROOT/tools/codegen/gen_backend_stubs.py
pytorch_root = pathlib.Path(__file__).parent.parent.parent.absolute()
template_dir = os.path.join(pytorch_root, "aten/src/ATen/templates")
def make_file_manager(install_dir: str) -> FileManager:
return FileManager(install_dir=install_dir,
template_dir=template_dir,
dry_run=dry_run)
fm = make_file_manager(output_dir)
native_yaml_path = os.path.join(
pytorch_root, 'aten/src/ATen/native/native_functions.yaml')
parsed_yaml = parse_native_yaml(native_yaml_path)
native_functions, backend_indices = parsed_yaml.native_functions, parsed_yaml.backend_indices
grouped_native_functions = get_grouped_native_functions(native_functions)
parsed_backend_yaml = parse_backend_yaml(source_yaml,
grouped_native_functions,
backend_indices)
backend_key = parsed_backend_yaml.backend_key
autograd_key = parsed_backend_yaml.autograd_key
cpp_namespace = parsed_backend_yaml.cpp_namespace
backend_indices = parsed_backend_yaml.backend_indices
selector = SelectiveBuilder.get_nop_selector()
# TODO: handle cases when yaml contains zero ops properly in a later PR.
if backend_key is not None and autograd_key is not None:
backend_dispatch_key: DispatchKey = backend_key
autograd_dispatch_key: DispatchKey = autograd_key
class_name = backend_indices[
backend_dispatch_key].native_function_class_name()
if impl_path is not None:
error_on_missing_kernels(native_functions, backend_indices,
backend_key, autograd_key, impl_path)
assert class_name is not None
generated_comment = 'Autogenerated file by gen_backend_stubs.py. Do not edit directly!'
fm.write_with_template(
f'{backend_dispatch_key}NativeFunctions.h',
'DispatchKeyNativeFunctions.h',
lambda: {
'generated_comment':
generated_comment,
'cpp_namespace':
cpp_namespace,
'class_name':
class_name,
# Convert to a set first to remove duplicate kernel names.
# Backends are allowed to repeat kernel names; only generate the declaration once!
'dispatch_declarations':
list(
set(
concatMap(
lambda f: dest.compute_native_function_declaration(
f, backend_indices[backend_dispatch_key]),
grouped_native_functions))) +
list(
set(
concatMap(
lambda f: dest.compute_native_function_declaration(
f, backend_indices[autograd_dispatch_key]),
grouped_native_functions))),
})
for dispatch_key in [backend_dispatch_key, autograd_dispatch_key]:
fm.write_with_template(
f'Register{dispatch_key}.cpp', 'RegisterDispatchKey.cpp',
lambda: {
'extra_cuda_headers':
'',
'external_backend_headers':
f'#include "{output_dir}/{backend_key}NativeFunctions.h"',
'namespaced_headers':
'',
'DispatchKey':
dispatch_key,
'dispatch_namespace':
dispatch_key.lower(),
'dispatch_helpers':
dest.gen_registration_helpers(backend_indices[dispatch_key]
),
'dispatch_namespaced_definitions':
list(
concatMap(
dest.RegisterDispatchKey(
backend_indices[dispatch_key],
Target.NAMESPACED_DEFINITION,
selector,
rocm=False,
cpp_namespace=cpp_namespace,
class_method_name=
f'{backend_dispatch_key}NativeFunctions'),
grouped_native_functions)),
'dispatch_anonymous_definitions':
list(
concatMap(
dest.RegisterDispatchKey(
backend_indices[dispatch_key],
Target.ANONYMOUS_DEFINITION,
selector,
rocm=False,
cpp_namespace=cpp_namespace,
class_method_name=
f'{backend_dispatch_key}NativeFunctions'),
grouped_native_functions)),
'dispatch_registrations':
list(
concatMap(
dest.RegisterDispatchKey(
backend_indices[dispatch_key],
Target.REGISTRATION,
selector,
rocm=False,
cpp_namespace=cpp_namespace,
class_method_name=
f'{backend_dispatch_key}NativeFunctions'),
grouped_native_functions)),
})
def main() -> None:
parser = argparse.ArgumentParser(description='Generate ATen source files')
parser.add_argument(
'-s',
'--source-path',
help='path to source directory for ATen',
default='aten/src/ATen')
parser.add_argument(
'-o',
'--output-dependencies',
help='output a list of dependencies into the given file and exit')
parser.add_argument(
'-d', '--install_dir', help='output directory',
default='build/aten/src/ATen')
parser.add_argument(
'--rocm',
action='store_true',
help='reinterpret CUDA as ROCm/HIP and adjust filepaths accordingly')
# TODO: --op_registration_whitelist will be removed when all call-sites
# for gen.py are moved over to using the operator YAML file for mobile
# custom build.
parser.add_argument(
'--op_registration_whitelist',
nargs='*',
help='filter op registrations by the whitelist (if set); '
'each item is `namespace`::`operator name` without overload name; '
'e.g.: aten::empty aten::conv2d ...')
parser.add_argument(
'--op_selection_yaml_path',
help='Provide a path to the operator selection (for custom build) YAML '
'that contains the information about the set of selected operators '
'and their categories (training, ...). Each operator is either a '
'full operator name with overload or just a bare operator name. '
'The operator names also contain the namespace prefix (e.g. aten::)')
parser.add_argument(
'--backend_whitelist',
nargs='*',
help='filter dispatch backend by the whitelist (if set), '
'e.g.: CPU CUDA QuantizedCPU ...')
parser.add_argument(
'--static_dispatch_backend',
help='generate static dispatch code for the specific backend (if set)')
parser.add_argument(
'--force_schema_registration',
action='store_true',
help='force it to generate schema-only registrations for all ops, including'
'those that are not listed on --op_registration_whitelist')
options = parser.parse_args()
selector = get_custom_build_selector(
options.op_registration_whitelist,
options.op_selection_yaml_path,
)
native_yaml_path = os.path.join(options.source_path, 'native/native_functions.yaml')
parsed_yaml = parse_native_yaml(native_yaml_path)
native_functions, backend_indices = parsed_yaml.native_functions, parsed_yaml.backend_indices
grouped_native_functions = get_grouped_native_functions(native_functions)
structured_native_functions = [g for g in grouped_native_functions if isinstance(g, NativeFunctionsGroup)]
template_dir = os.path.join(options.source_path, "templates")
# NB: It is mandatory to NOT use os.path.join here, as the install directory
# will eventually be ingested by cmake, which does not respect Windows style
# path slashes. If you switch this to use os.path.join, you'll get an error
# like:
#
# Syntax error in cmake code when parsing string
#
# C:/Jenkins/workspace/pytorch-builds/pytorch-win-ws2016-cuda9-cudnn7-py3-build/build/aten/src/ATen\core/TensorMethods.h
#
# Invalid character escape '\c'.
core_install_dir = f'{options.install_dir}/core'
pathlib.Path(core_install_dir).mkdir(parents=True, exist_ok=True)
def make_file_manager(install_dir: str) -> FileManager:
return FileManager(install_dir=install_dir, template_dir=template_dir, dry_run=options.output_dependencies)
core_fm = make_file_manager(core_install_dir)
cpu_fm = make_file_manager(options.install_dir)
cuda_fm = make_file_manager(options.install_dir)
extra_cuda_headers = '''\
#include <c10/cuda/CUDAGuard.h>
#include <ATen/cuda/ATenCUDAGeneral.h>
#include <ATen/cuda/CUDADevice.h>
#include <ATen/cuda/CUDAContext.h>'''
if options.rocm:
extra_cuda_headers = '''\
#include <ATen/hip/impl/HIPGuardImplMasqueradingAsCUDA.h>
#include <ATen/hip/ATenHIPGeneral.h>
#include <ATen/hip/HIPDevice.h>
#include <ATen/hip/HIPContext.h>'''
dispatch_keys = [
DispatchKey.CPU,
DispatchKey.SparseCPU,
DispatchKey.SparseCsrCPU,
DispatchKey.MkldnnCPU,
DispatchKey.CUDA,
DispatchKey.SparseCUDA,
DispatchKey.SparseCsrCUDA,
DispatchKey.QuantizedCPU,
DispatchKey.QuantizedCUDA,
DispatchKey.CompositeImplicitAutograd,
DispatchKey.CompositeExplicitAutograd,
# Meta is a magic key: it is automatically generated for structured
# kernels
DispatchKey.Meta,
]
# Only a limited set of dispatch keys get CPUFunctions.h headers generated
# for them; this is the set
functions_keys = {
DispatchKey.CPU,
DispatchKey.CUDA,
DispatchKey.CompositeImplicitAutograd,
DispatchKey.CompositeExplicitAutograd,
DispatchKey.Meta,
}
if options.backend_whitelist:
dispatch_keys = [k for k in dispatch_keys if is_generic_dispatch_key(k) or str(k) in options.backend_whitelist]
static_dispatch_idx: Optional[BackendIndex] = None
if options.static_dispatch_backend:
static_dispatch_idx = backend_indices[DispatchKey.parse(options.static_dispatch_backend)]
for dispatch_key in dispatch_keys:
fm = cuda_fm if is_cuda_dispatch_key(dispatch_key) else cpu_fm
fm.write_with_template(f'Register{dispatch_key}.cpp', 'RegisterDispatchKey.cpp', lambda: {
'extra_cuda_headers': extra_cuda_headers if is_cuda_dispatch_key(dispatch_key) else '',
'legacy_th_headers':
'#include <ATen/LegacyTHFunctionsCUDA.h>' if dispatch_key == DispatchKey.CUDA else
'',
'external_backend_headers': '',
'namespaced_headers': f'#include <ATen/{dispatch_key}Functions.h>' if dispatch_key in functions_keys else '',
'DispatchKey': dispatch_key,
'dispatch_namespace': dispatch_key.lower(),
'dispatch_namespaced_definitions': list(concatMap(
dest.RegisterDispatchKey(
backend_indices[dispatch_key],
Target.NAMESPACED_DEFINITION,
selector,
rocm=options.rocm,
cpp_namespace='at::native'),
grouped_native_functions
)),
'dispatch_anonymous_definitions': list(concatMap(
dest.RegisterDispatchKey(
backend_indices[dispatch_key],
Target.ANONYMOUS_DEFINITION,
selector,
rocm=options.rocm,
cpp_namespace='at::native'),
grouped_native_functions
)),
'dispatch_registrations': list(concatMap(
dest.RegisterDispatchKey(
backend_indices[dispatch_key],
Target.REGISTRATION,
selector,
rocm=options.rocm,
cpp_namespace='at::native'),
grouped_native_functions
)),
})
if dispatch_key in functions_keys:
if dispatch_key in static_dispatch_keys(static_dispatch_idx):
# See Note [Avoiding Include Cycles In Static Dispatch]
inl_headers = ''
else:
inl_headers = f'#include <ATen/{dispatch_key}Functions_inl.h>'
fm.write_with_template(f'{dispatch_key}Functions.h', 'DispatchKeyFunctions.h', lambda: {
'dispatch_key': str(dispatch_key),
'inline_headers_for_nonstatic_build': inl_headers,
})
fm.write_with_template(f'{dispatch_key}Functions_inl.h', 'DispatchKeyFunctions_inl.h', lambda: {
'dispatch_namespace': dispatch_key.lower(),
'dispatch_namespaced_declarations': list(concatMap(
dest.RegisterDispatchKey(
backend_indices[dispatch_key],
Target.NAMESPACED_DECLARATION,
selector,
rocm=options.rocm,
cpp_namespace='at::native'),
grouped_native_functions
)),
})
del fm
# BackendSelect is generated specially
cpu_fm.write('RegisterBackendSelect.cpp', lambda: {
'backend_select_method_definitions':
list(mapMaybe(ComputeBackendSelect(Target.DEFINITION, selector), native_functions)),
'backend_select_function_registrations':
list(mapMaybe(ComputeBackendSelect(Target.REGISTRATION, selector), native_functions)),
})
cpu_fm.write('NativeMetaFunctions.h', lambda: {
'declarations': list(mapMaybe(compute_meta_function_declaration, structured_native_functions)),
})
schema_selector = selector
if options.force_schema_registration:
schema_selector = SelectiveBuilder.get_nop_selector()
cpu_fm.write('RegisterSchema.cpp', lambda: {
'schema_registrations': list(mapMaybe(RegisterSchema(schema_selector), native_functions)),
})
cpu_fm.write('Operators.cpp', lambda: {
'definitions': list(mapMaybe(ComputeOperators(
Target.DEFINITION), native_functions)),
})
cpu_fm.write('Operators.h', lambda: {
'declarations': list(mapMaybe(ComputeOperators(
Target.DECLARATION), native_functions)),
})
cpu_fm.write('Functions.h', lambda: {
'static_dispatch_extra_headers': static_dispatch_extra_headers(static_dispatch_idx),
'function_definitions': list(mapMaybe(ComputeFunction(
static_dispatch_backend_index=static_dispatch_idx), native_functions)),
})
cpu_fm.write('Functions.cpp', lambda: {})
core_fm.write('TensorBody.h', lambda: {
'static_dispatch_extra_headers': static_dispatch_extra_headers(static_dispatch_idx, skip_tensor_include=True),
'tensor_method_declarations': list(mapMaybe(ComputeTensorMethod(
target=Target.DECLARATION, static_dispatch_backend_index=static_dispatch_idx), native_functions)),
'tensor_method_definitions': list(mapMaybe(ComputeTensorMethod(
target=Target.DEFINITION, static_dispatch_backend_index=static_dispatch_idx), native_functions)),
})
core_fm.write('TensorMethods.cpp', lambda: {})
cpu_fm.write('RedispatchFunctions.h', lambda: {
'function_redispatch_definitions': list(mapMaybe(ComputeRedispatchFunction(), native_functions)),
})
core_fm.write('ATenOpList.cpp', lambda: {
'aten_ops': list(mapMaybe(compute_aten_op, native_functions)),
})
cpu_fm.write('NativeFunctions.h', lambda: {
'native_function_declarations': list(concatMap(
# Convert to a set first to remove duplicate kernel names.
# Backends are allowed to repeat kernel names; only generate the declaration once!
lambda f: list(OrderedDict.fromkeys(concatMap(
lambda backend_idx:
dest.compute_native_function_declaration(f, backend_idx),
backend_indices.values()))),
grouped_native_functions)),
})
cpu_fm.write('Declarations.yaml', lambda: format_yaml([compute_declaration_yaml(f) for f in native_functions]))
cpu_fm.write('RegistrationDeclarations.h', lambda: {
'registration_declarations': [compute_registration_declarations(f, backend_indices) for f in native_functions],
})
if options.output_dependencies:
cpu_fm.write_outputs(options.output_dependencies)
core_fm.write_outputs(f"{options.output_dependencies}-core")
cuda_fm.write_outputs(f"{options.output_dependencies}-cuda")
def main() -> None:
parser = argparse.ArgumentParser(description='Generate ATen source files')
parser.add_argument('-s',
'--source-path',
help='path to source directory for ATen',
default='aten/src/ATen')
parser.add_argument(
'-o',
'--output-dependencies',
help='output a list of dependencies into the given file and exit')
parser.add_argument('-d',
'--install_dir',
help='output directory',
default='build/aten/src/ATen')
parser.add_argument(
'--rocm',
action='store_true',
help='reinterpret CUDA as ROCm/HIP and adjust filepaths accordingly')
# TODO: --op_registration_whitelist will be removed when all call-sites
# for gen.py are moved over to using the operator YAML file for mobile
# custom build.
parser.add_argument(
'--op_registration_whitelist',
nargs='*',
help='filter op registrations by the whitelist (if set); '
'each item is `namespace`::`operator name` without overload name; '
'e.g.: aten::empty aten::conv2d ...')
parser.add_argument(
'--op_selection_yaml_path',
help='Provide a path to the operator selection (for custom build) YAML '
'that contains the information about the set of selected operators '
'and their categories (training, ...). Each operator is either a '
'full operator name with overload or just a bare operator name. '
'The operator names also contain the namespace prefix (e.g. aten::)')
parser.add_argument(
'--backend_whitelist',
nargs='*',
help='filter dispatch backend by the whitelist (if set), '
'e.g.: CPU CUDA QuantizedCPU ...')
parser.add_argument(
'--force_schema_registration',
action='store_true',
help=
'force it to generate schema-only registrations for all ops, including'
'those that are not listed on --op_registration_whitelist')
options = parser.parse_args()
selector = get_custom_build_selector(
options.op_registration_whitelist,
options.op_selection_yaml_path,
)
native_functions = parse_native_yaml(
os.path.join(options.source_path, 'native/native_functions.yaml'))
pre_grouped_native_functions: Dict[FunctionSchema, Dict[SchemaKind,
NativeFunction]]
pre_grouped_native_functions = defaultdict(dict)
for f in native_functions:
d = pre_grouped_native_functions[f.func.signature()]
assert f.func.kind() not in d
d[f.func.kind()] = f
grouped_native_functions = [
NativeFunctionGroup.from_dict(v)
for v in pre_grouped_native_functions.values()
]
# NB: At the moment, grouped_native_functions isn't used by anything,
# this code lives here to help potential future consumers; for a live
# example see https://github.com/pytorch/pytorch/pull/45277
template_dir = os.path.join(options.source_path, "templates")
# NB: It is mandatory to NOT use os.path.join here, as the install directory
# will eventually be ingested by cmake, which does not respect Windows style
# path slashes. If you switch this to use os.path.join, you'll get an error
# like:
#
# Syntax error in cmake code when parsing string
#
# C:/Jenkins/workspace/pytorch-builds/pytorch-win-ws2016-cuda9-cudnn7-py3-build/build/aten/src/ATen\core/TensorMethods.h
#
# Invalid character escape '\c'.
core_install_dir = f'{options.install_dir}/core'
pathlib.Path(core_install_dir).mkdir(parents=True, exist_ok=True)
def make_file_manager(install_dir: str) -> FileManager:
return FileManager(install_dir=install_dir,
template_dir=template_dir,
dry_run=options.output_dependencies)
core_fm = make_file_manager(core_install_dir)
cpu_fm = make_file_manager(options.install_dir)
cuda_fm = make_file_manager(options.install_dir)
extra_cuda_headers = '''\
#include <ATen/cuda/ATenCUDAGeneral.h>
#include <ATen/cuda/CUDADevice.h>
#include <ATen/cuda/CUDAContext.h>'''
if options.rocm:
extra_cuda_headers = '''\
#include <ATen/hip/ATenHIPGeneral.h>
#include <ATen/hip/HIPDevice.h>
#include <ATen/hip/HIPContext.h>'''
# NB: substrings in these dispatch keys matter, we do tests to see if
# a key contains, e.g., CUDA to classify it as a CUDA backend
dispatch_keys = [
"CPU",
"SparseCPU",
"MkldnnCPU",
"CUDA",
"SparseCUDA",
"QuantizedCPU",
"QuantizedCUDA",
"Math",
"DefaultBackend",
]
if options.backend_whitelist:
dispatch_keys = [
k for k in dispatch_keys
if is_generic_dispatch_key(k) or k in options.backend_whitelist
]
for dispatch_key in dispatch_keys:
cpp_template = 'RegisterDispatchKey.cpp'
fm = cuda_fm if is_cuda_dispatch_key(dispatch_key) else cpu_fm
fm.write_with_template(
f'Register{dispatch_key}.cpp', cpp_template, lambda: {
'extra_cuda_headers':
extra_cuda_headers
if is_cuda_dispatch_key(dispatch_key) else '',
'legacy_th_headers':
'#include <ATen/LegacyTHFunctionsCPU.h>' if dispatch_key ==
"CPU" else '#include <ATen/LegacyTHFunctionsCUDA.h>'
if dispatch_key == "CUDA" else '',
'DispatchKey':
dispatch_key,
'dispatch_definitions':
list(
mapMaybe(
RegisterDispatchKey(dispatch_key, Target.DEFINITION,
selector), native_functions)),
'dispatch_registrations':
list(
mapMaybe(
RegisterDispatchKey(dispatch_key, Target.REGISTRATION,
selector), native_functions)),
})
del fm
# BackendSelect is generated specially
cpu_fm.write(
'RegisterBackendSelect.cpp', lambda: {
'backend_select_method_definitions':
list(
mapMaybe(ComputeBackendSelect(Target.DEFINITION),
native_functions)),
'backend_select_function_registrations':
list(
mapMaybe(ComputeBackendSelect(Target.REGISTRATION),
native_functions)),
})
schema_selector = selector
if options.force_schema_registration:
schema_selector = SelectiveBuilder.get_nop_selector()
cpu_fm.write(
'RegisterSchema.cpp', lambda: {
'schema_registrations':
list(mapMaybe(RegisterSchema(schema_selector), native_functions)),
})
cpu_fm.write(
'Functions.h', lambda: {
'function_declarations':
list(
mapMaybe(ComputeFunction(Target.DECLARATION), native_functions)
),
})
cpu_fm.write(
'Functions.cpp', lambda: {
'function_definitions':
list(mapMaybe(ComputeFunction(Target.DEFINITION), native_functions)
),
})
core_fm.write(
'TensorBody.h', lambda: {
'tensor_method_declarations':
list(
mapMaybe(ComputeTensorMethod(Target.DECLARATION),
native_functions)),
})
core_fm.write(
'TensorMethods.cpp', lambda: {
'tensor_method_definitions':
list(
mapMaybe(ComputeTensorMethod(Target.DEFINITION),
native_functions)),
})
core_fm.write(
'ATenOpList.cpp', lambda: {
'aten_ops': list(mapMaybe(compute_aten_op, native_functions)),
})
cpu_fm.write(
'NativeFunctions.h', lambda: {
'native_function_declarations':
list(
concatMap(compute_native_function_declaration, native_functions
)),
})
cpu_fm.write(
'Declarations.yaml', lambda: format_yaml(
[compute_declaration_yaml(f) for f in native_functions]))
cpu_fm.write(
'RegistrationDeclarations.h', lambda: {
'registration_declarations':
[compute_registration_declarations(f) for f in native_functions],
})
if options.output_dependencies:
cpu_fm.write_outputs(options.output_dependencies)
core_fm.write_outputs(f"{options.output_dependencies}-core")
cuda_fm.write_outputs(f"{options.output_dependencies}-cuda")
def run(source_yaml: str, output_dir: str, dry_run: bool, impl_path: Optional[str],
gen_ts_lowerings: bool, node_base: str, node_base_hdr: Optional[str],
tensor_class: str, tensor_class_hdr: str) -> None:
# Assumes that this file lives at PYTORCH_ROOT/tools/codegen/gen_backend_stubs.py
pytorch_root = pathlib.Path(__file__).parent.parent.parent.absolute()
template_dir = os.path.join(pytorch_root, "aten/src/ATen/templates")
def make_file_manager(install_dir: str) -> FileManager:
return FileManager(install_dir=install_dir, template_dir=template_dir, dry_run=dry_run)
fm = make_file_manager(output_dir)
native_yaml_path = os.path.join(pytorch_root, 'aten/src/ATen/native/native_functions.yaml')
parsed_yaml = parse_native_yaml(native_yaml_path)
native_functions, backend_indices = parsed_yaml.native_functions, parsed_yaml.backend_indices
grouped_native_functions = get_grouped_native_functions(native_functions)
def sort_native_function(f: Union[NativeFunctionsGroup, NativeFunction]) -> str:
"""
We sort the native function because of the note in concat_map_codegen.
TODO(alanwaketan): Remove this sorting hack once all ops are grouped properly.
"""
func = f.functional.func if isinstance(f, NativeFunctionsGroup) else f.func
return str(func.name.name)
grouped_native_functions = sorted(grouped_native_functions, key=sort_native_function)
parsed_backend_yaml = parse_backend_yaml(source_yaml, grouped_native_functions, backend_indices)
backend_key = parsed_backend_yaml.backend_key
autograd_key = parsed_backend_yaml.autograd_key
cpp_namespace = parsed_backend_yaml.cpp_namespace
backend_indices = parsed_backend_yaml.backend_indices
full_codegen = parse_full_codegen_ops(source_yaml, grouped_native_functions)
def concat_map_codegen(func: Callable[[NativeFunction], Sequence[str]],
xs: Iterable[Union[NativeFunctionsGroup, NativeFunction]],
*, codegenInplaceVariant: bool = False) -> Iterator[str]:
"""
We code-gen for the functional variant, which is all we need for IR classes/lowerings/shape inferences, but we
only code-gen additional entries for the inplace variant for the native functions.
Note: If xs is not sorted, there may be an edge case when generating IR classes. Considering relu and relu_, if
we encounter relu_ before relu. we will then generate an IR class with op = at::aten::relu_ for both relu and
relu_ which will cause problems for relu.
TODO(alanwaketan): Once all ops are grouped properly, we should no longer need this hack.
"""
generated = set()
def gen_key(func: FunctionSchema) -> Tuple[str, str]:
# we want to generate unique entries for overloads of functional variants,
# but not for inplace variants unless explicitly told `codegenInplaceVariant`
return (func.name.name.base, func.name.overload_name)
for x in xs:
f = x.functional if isinstance(x, NativeFunctionsGroup) else x
# For the 'or'd terms:
# 1. codegenInplaceVariant means we can generate the in-place variant corresponding items.
# 2. not f.func.name.name.inplace means the op is not a in-place variant, so we can generate the item.
# 3. f.func.name.name.base not in generated means even for in-place ops we still need to generate the item
# as if they were the functional variants for one time.
if f.func.name in full_codegen and \
(codegenInplaceVariant or not f.func.name.name.inplace or gen_key(f.func) not in generated):
generated.add(gen_key(f.func))
for r in func(f):
yield r
selector = SelectiveBuilder.get_nop_selector()
assert backend_key is not None
class_name = backend_indices[backend_key].native_function_class_name()
if impl_path is not None:
error_on_missing_kernels(native_functions, backend_indices, backend_key,
autograd_key, impl_path, full_codegen)
assert class_name is not None
# Generate nativefunction declarations
gen_dispatchkey_nativefunc_headers(fm, class_name, cpp_namespace, backend_indices,
grouped_native_functions, backend_key, autograd_key)
# Generate Dispatcher registrations which hook up the nativefunctions
for dispatch_key in [backend_key] if autograd_key is None else [backend_key, autograd_key]:
gen_dispatcher_registrations(fm, output_dir, cpp_namespace, backend_indices, grouped_native_functions,
backend_key, dispatch_key, selector)
# Generate native function impls that build IR nodes
fm.write_with_template(f'{backend_key}NativeFunctions.cpp', 'DispatchKeyNativeFunctions.cpp', lambda: {
'includes': [f'#include <{path}>' for path in [
tensor_class_hdr,
"ATen/MetaFunctions.h",
"torch/csrc/lazy/core/shape.h",
"lazy_tensor_core/csrc/aten_ltc_bridge.h",
"lazy_tensors/computation_client/metrics.h",
f"{output_dir}/{backend_key}NativeFunctions.h",
f"{output_dir}/{backend_key}LazyIr.h",
f"{output_dir}/{backend_key}ShapeInference.h",
]],
'native_functions_include': '',
'backend_namespace': 'torch_lazy_tensors', # this is wrong
'native_function_definitions':
list(concat_map_codegen(
dest.GenLazyNativeFuncDefinition(f'{backend_key}NativeFunctions',
backend_indices[backend_key],
tensor_class),
grouped_native_functions,
codegenInplaceVariant=True
)),
})
# Generate headers for shape/dtype funcs for non-meta kernels
fm.write_with_template(f'{backend_key}ShapeInference.h', 'ShapeInference.h', lambda: {
'lazy_ir_sysinc': [f'#include <{path}>' for path in [
"ATen/Tensor.h",
"c10/core/ScalarType.h",
"c10/util/Optional.h",
"torch/csrc/lazy/core/ir.h",
"torch/csrc/lazy/core/shape.h",
"vector",
]],
'lazy_ir_inc': [],
'DispatchKey': backend_key,
'dispatch_namespace': backend_key.lower(),
'func_declarations': list(concat_map_codegen(
dest.GenLazyShapeInferenceDefinition(backend_indices[backend_key],
tensor_class),
grouped_native_functions,
codegenInplaceVariant=True
)),
})
# Generate headers for shape/dtype funcs for non-meta kernels
fm.write_with_template(f'{backend_key}ShapeInference.h', 'ShapeInference.h', lambda: {
'lazy_ir_sysinc': [f'#include <{path}>' for path in [
"ATen/Tensor.h",
"c10/core/ScalarType.h",
"c10/util/Optional.h",
"torch/csrc/lazy/core/ir.h",
"torch/csrc/lazy/core/shape.h",
"vector",
]],
'lazy_ir_inc': [],
'DispatchKey': backend_key,
'dispatch_namespace': backend_key.lower(),
'func_declarations': list(concat_map_codegen(
dest.GenLazyShapeInferenceDefinition(backend_indices[backend_key],
tensor_class),
grouped_native_functions
)),
})
# Generate IR node classes
fm.write_with_template(f'{backend_key}LazyIr.h', 'LazyIr.h', lambda: {
'lazy_ir_sysinc': [f'#include <{path}>' for path in [
"ATen/core/Formatting.h",
"c10/core/ScalarType.h",
"c10/util/Optional.h",
"torch/csrc/lazy/core/hash.h",
"torch/csrc/lazy/core/ir.h",
"vector",
]],
'lazy_ir_inc': [f'#include "{path}"' for path in [
node_base_hdr if node_base_hdr is not None else None
] if path is not None],
'external_backend_headers': f'#include "{output_dir}/{backend_key}NativeFunctions.h"',
'namespaced_headers': '',
'DispatchKey': backend_key,
'dispatch_namespace': backend_key.lower(),
'ir_declarations': list(concat_map_codegen(
dest.LazyIR(backend_indices[backend_key], node_base),
grouped_native_functions
)),
})
def main() -> None:
parser = argparse.ArgumentParser(description='Generate ATen source files')
parser.add_argument(
'-s',
'--source-path',
help='path to source directory for ATen',
default='aten/src/ATen')
parser.add_argument(
'-o',
'--output-dependencies',
help='output a list of dependencies into the given file and exit')
parser.add_argument(
'-d', '--install_dir', help='output directory',
default='build/aten/src/ATen')
parser.add_argument(
'--rocm',
action='store_true',
help='reinterpret CUDA as ROCm/HIP and adjust filepaths accordingly')
# TODO: --op_registration_whitelist will be removed when all call-sites
# for gen.py are moved over to using the operator YAML file for mobile
# custom build.
parser.add_argument(
'--op_registration_whitelist',
nargs='*',
help='filter op registrations by the whitelist (if set); '
'each item is `namespace`::`operator name` without overload name; '
'e.g.: aten::empty aten::conv2d ...')
parser.add_argument(
'--op_selection_yaml_path',
help='Provide a path to the operator selection (for custom build) YAML '
'that contains the information about the set of selected operators '
'and their categories (training, ...). Each operator is either a '
'full operator name with overload or just a bare operator name. '
'The operator names also contain the namespace prefix (e.g. aten::)')
parser.add_argument(
'--backend_whitelist',
nargs='*',
help='filter dispatch backend by the whitelist (if set), '
'e.g.: CPU CUDA QuantizedCPU ...')
parser.add_argument(
'--force_schema_registration',
action='store_true',
help='force it to generate schema-only registrations for all ops, including'
'those that are not listed on --op_registration_whitelist')
options = parser.parse_args()
selector = get_custom_build_selector(
options.op_registration_whitelist,
options.op_selection_yaml_path,
)
native_functions = parse_native_yaml(os.path.join(options.source_path, 'native/native_functions.yaml'))
pre_grouped_native_functions: Dict[FunctionSchema, Dict[SchemaKind, NativeFunction]]
pre_grouped_native_functions = defaultdict(dict)
for f in native_functions:
d = pre_grouped_native_functions[f.func.signature()]
assert f.func.kind() not in d
d[f.func.kind()] = f
def flatten_pre_group(d: Dict[SchemaKind, NativeFunction]) -> Sequence[Union[NativeFunction, StructuredNativeFunctions]]:
r = StructuredNativeFunctions.from_dict(d)
if r is None:
return list(d.values())
else:
return [r]
# TODO: how come ValuesView isn't a Sequence lol
grouped_native_functions = list(concatMap(flatten_pre_group, list(pre_grouped_native_functions.values())))
structured_native_functions = [g for g in grouped_native_functions if isinstance(g, StructuredNativeFunctions)]
template_dir = os.path.join(options.source_path, "templates")
# NB: It is mandatory to NOT use os.path.join here, as the install directory
# will eventually be ingested by cmake, which does not respect Windows style
# path slashes. If you switch this to use os.path.join, you'll get an error
# like:
#
# Syntax error in cmake code when parsing string
#
# C:/Jenkins/workspace/pytorch-builds/pytorch-win-ws2016-cuda9-cudnn7-py3-build/build/aten/src/ATen\core/TensorMethods.h
#
# Invalid character escape '\c'.
core_install_dir = f'{options.install_dir}/core'
pathlib.Path(core_install_dir).mkdir(parents=True, exist_ok=True)
def make_file_manager(install_dir: str) -> FileManager:
return FileManager(install_dir=install_dir, template_dir=template_dir, dry_run=options.output_dependencies)
core_fm = make_file_manager(core_install_dir)
cpu_fm = make_file_manager(options.install_dir)
cuda_fm = make_file_manager(options.install_dir)
extra_cuda_headers = '''\
#include <c10/cuda/CUDAGuard.h>
#include <ATen/cuda/ATenCUDAGeneral.h>
#include <ATen/cuda/CUDADevice.h>
#include <ATen/cuda/CUDAContext.h>'''
if options.rocm:
extra_cuda_headers = '''\
#include <ATen/hip/impl/HIPGuardImplMasqueradingAsCUDA.h>
#include <ATen/hip/ATenHIPGeneral.h>
#include <ATen/hip/HIPDevice.h>
#include <ATen/hip/HIPContext.h>'''
dispatch_keys = [
DispatchKey.CPU,
DispatchKey.SparseCPU,
DispatchKey.MkldnnCPU,
DispatchKey.CUDA,
DispatchKey.SparseCUDA,
DispatchKey.QuantizedCPU,
DispatchKey.QuantizedCUDA,
DispatchKey.Math,
DispatchKey.DefaultBackend,
# Meta is a magic key: it is automatically generated for structured
# kernels
DispatchKey.Meta,
]
# Only a limited set of dispatch keys get CPUFunctions.h headers generated
# for them; this is the set
functions_keys = {
DispatchKey.CPU,
DispatchKey.CUDA,
}
if options.backend_whitelist:
dispatch_keys = [k for k in dispatch_keys if is_generic_dispatch_key(k) or str(k) in options.backend_whitelist]
for dispatch_key in dispatch_keys:
fm = cuda_fm if is_cuda_dispatch_key(dispatch_key) else cpu_fm
fm.write_with_template(f'Register{dispatch_key}.cpp', 'RegisterDispatchKey.cpp', lambda: {
'extra_cuda_headers': extra_cuda_headers if is_cuda_dispatch_key(dispatch_key) else '',
'legacy_th_headers':
'#include <ATen/LegacyTHFunctionsCPU.h>' if dispatch_key == DispatchKey.CPU else
'#include <ATen/LegacyTHFunctionsCUDA.h>' if dispatch_key == DispatchKey.CUDA else
'',
'DispatchKey': dispatch_key,
'dispatch_namespace': dispatch_key.lower(),
'dispatch_namespaced_definitions': list(concatMap(
dest.RegisterDispatchKey(
dispatch_key, Target.NAMESPACED_DEFINITION, selector, rocm=options.rocm),
grouped_native_functions
)),
'dispatch_anonymous_definitions': list(concatMap(
dest.RegisterDispatchKey(
dispatch_key, Target.ANONYMOUS_DEFINITION, selector, rocm=options.rocm),
grouped_native_functions
)),
'dispatch_registrations': list(concatMap(
dest.RegisterDispatchKey(dispatch_key, Target.REGISTRATION, selector, rocm=options.rocm),
grouped_native_functions
)),
})
if dispatch_key in functions_keys:
fm.write_with_template(f'{dispatch_key}Functions.h', 'DispatchKeyFunctions.h', lambda: {
'dispatch_namespace': dispatch_key.lower(),
'dispatch_namespaced_declarations': list(concatMap(
dest.RegisterDispatchKey(
dispatch_key, Target.NAMESPACED_DECLARATION, selector, rocm=options.rocm),
grouped_native_functions
)),
})
del fm
# BackendSelect is generated specially
cpu_fm.write('RegisterBackendSelect.cpp', lambda: {
'backend_select_method_definitions':
list(mapMaybe(ComputeBackendSelect(Target.DEFINITION), native_functions)),
'backend_select_function_registrations':
list(mapMaybe(ComputeBackendSelect(Target.REGISTRATION), native_functions)),
})
cpu_fm.write('MetaFunctions.h', lambda: {
'declarations': list(map(compute_meta_function_declaration, structured_native_functions)),
})
schema_selector = selector
if options.force_schema_registration:
schema_selector = SelectiveBuilder.get_nop_selector()
cpu_fm.write('RegisterSchema.cpp', lambda: {
'schema_registrations': list(mapMaybe(RegisterSchema(schema_selector), native_functions)),
})
cpu_fm.write('Functions.h', lambda: {
'function_declarations': list(mapMaybe(ComputeFunction(Target.DECLARATION), native_functions)),
})
cpu_fm.write('Functions.cpp', lambda: {
'function_definitions': list(mapMaybe(ComputeFunction(Target.DEFINITION), native_functions)),
})
core_fm.write('TensorBody.h', lambda: {
'tensor_method_declarations': list(mapMaybe(ComputeTensorMethod(Target.DECLARATION), native_functions)),
})
core_fm.write('TensorMethods.cpp', lambda: {
'tensor_method_definitions': list(mapMaybe(ComputeTensorMethod(Target.DEFINITION), native_functions)),
})
core_fm.write('ATenOpList.cpp', lambda: {
'aten_ops': list(mapMaybe(compute_aten_op, native_functions)),
})
cpu_fm.write('NativeFunctions.h', lambda: {
'native_function_declarations': list(concatMap(compute_native_function_declaration, grouped_native_functions)),
})
cpu_fm.write('Declarations.yaml', lambda: format_yaml([compute_declaration_yaml(f) for f in native_functions]))
cpu_fm.write('RegistrationDeclarations.h', lambda: {
'registration_declarations': [compute_registration_declarations(f) for f in native_functions],
})
if options.output_dependencies:
cpu_fm.write_outputs(options.output_dependencies)
core_fm.write_outputs(f"{options.output_dependencies}-core")
cuda_fm.write_outputs(f"{options.output_dependencies}-cuda")
def run_gen_lazy_tensor(
aten_path: str,
source_yaml: str,
output_dir: str,
dry_run: bool,
impl_path: Optional[str],
node_base: str = default_args.node_base,
node_base_hdr: Optional[str] = default_args.node_base_hdr,
tensor_class: str = default_args.tensor_class,
tensor_class_hdr: str = default_args.tensor_class_hdr,
shape_inference_hdr: str = default_args.shape_inference_hdr,
lazy_ir_cls: Type[LazyIR] = default_args.lazy_ir_cls,
# build_in_tree is true for TS backend and affects include paths
build_in_tree: bool = False,
# per_operator_headers changes whether ATen/Functions.h or individual operator headers are used
# it must match how ATen was built
per_operator_headers: bool = False,
backend_name: str = default_args.backend_name,
gen_forced_fallback_code: bool = False) -> None:
template_dir = os.path.join(aten_path, "templates")
def make_file_manager(install_dir: str) -> FileManager:
return FileManager(install_dir=install_dir,
template_dir=template_dir,
dry_run=dry_run)
fm = make_file_manager(output_dir)
native_yaml_path = os.path.join(aten_path, 'native/native_functions.yaml')
parsed_yaml = parse_native_yaml(native_yaml_path)
native_functions, backend_indices = parsed_yaml.native_functions, parsed_yaml.backend_indices
grouped_native_functions = get_grouped_native_functions(native_functions)
def sort_native_function(
f: Union[NativeFunctionsGroup, NativeFunction]) -> str:
"""
We sort the native function because of the note in concat_map_codegen.
TODO(alanwaketan): Remove this sorting hack once all ops are grouped properly.
"""
func = f.functional.func if isinstance(
f, NativeFunctionsGroup) else f.func
return str(func.name.name)
grouped_native_functions = sorted(grouped_native_functions,
key=sort_native_function)
parsed_backend_yaml = parse_backend_yaml(source_yaml,
grouped_native_functions,
backend_indices)
backend_key = parsed_backend_yaml.backend_key
autograd_key = parsed_backend_yaml.autograd_key
cpp_namespace = parsed_backend_yaml.cpp_namespace
backend_indices = parsed_backend_yaml.backend_indices
full_codegen = parse_full_codegen_ops(source_yaml,
grouped_native_functions)
def concat_map_codegen(
func: Callable[[NativeFunction], Sequence[str]],
xs: Iterable[Union[NativeFunctionsGroup, NativeFunction]],
*,
codegenInplaceVariant: bool = False) -> Iterator[str]:
"""
We code-gen for the functional variant, which is all we need for IR classes/lowerings/shape inferences, but we
only code-gen additional entries for the inplace variant for the native functions.
Note: If xs is not sorted, there may be an edge case when generating IR classes. Considering relu and relu_, if
we encounter relu_ before relu. we will then generate an IR class with op = at::aten::relu_ for both relu and
relu_ which will cause problems for relu.
TODO(alanwaketan): Once all ops are grouped properly, we should no longer need this hack.
"""
generated = set()
def gen_key(func: FunctionSchema) -> Tuple[str, str]:
# we want to generate unique entries for overloads of functional variants,
# but not for inplace variants unless explicitly told `codegenInplaceVariant`
return (func.name.name.base, func.name.overload_name)
for x in xs:
f = x.functional if isinstance(x, NativeFunctionsGroup) else x
# For the 'or'd terms:
# 1. codegenInplaceVariant means we can generate the in-place variant corresponding items.
# 2. not f.func.name.name.inplace means the op is not a in-place variant, so we can generate the item.
# 3. f.func.name.name.base not in generated means even for in-place ops we still need to generate the item
# as if they were the functional variants for one time.
if f.func.name in full_codegen and \
(codegenInplaceVariant or not f.func.name.name.inplace or gen_key(f.func) not in generated):
generated.add(gen_key(f.func))
for r in func(f):
yield r
selector = SelectiveBuilder.get_nop_selector()
assert backend_key is not None
class_name = backend_indices[backend_key].native_function_class_name()
if impl_path is not None:
error_on_missing_kernels(native_functions, backend_indices,
backend_key, autograd_key, class_name,
impl_path, full_codegen)
""" Validate Shape Inference Definitions
Generated lazy native functions all perform shape inference, by first using a meta:: kernel
if available for that op, and otherwise using a 'compute_shape_{op}' function instead. The generator
knows the call signature for compute_shape_{op} becuase it matches the nativefunction (and meta::) signature,
so it just has to check whether the op is structured and generate a call for one or the other. It's up to the dev
to supply the missing compute_shape_{op} function, but the codegen at least warns you about this and provides
the expected signature which can be copy-pasted into shape_inference.h.
compute_shape_{op} functions are handwritten and should be replaced over time as ops get ported
to structured kernels.
See torch/csrc/lazy/core/shape_inference.cpp #READ THIS! for more information.
"""
if shape_inference_hdr is not None:
expected_shape_infr_decls = list(
concat_map_codegen(dest.GenLazyShapeInferenceDefinition(
backend_indices[backend_key], tensor_class),
grouped_native_functions,
codegenInplaceVariant=True))
validate_shape_inference_header(shape_inference_hdr,
expected_shape_infr_decls)
assert class_name is not None
# Generate nativefunction declarations
# Note, eager registrations is set to False for the lazy TS backend as another LTC backend
# may want to register their own lazy kernels instead of registering the TS ones.
# The registration will lazily happen when init_ts_backend is called.
gen_dispatchkey_nativefunc_headers(fm, class_name, cpp_namespace,
backend_indices,
grouped_native_functions, backend_key,
autograd_key, backend_name)
# Generate Dispatcher registrations which hook up the nativefunctions
for dispatch_key in [backend_key] if autograd_key is None else [
backend_key, autograd_key
]:
gen_dispatcher_registrations(fm,
output_dir,
class_name,
cpp_namespace,
backend_indices,
grouped_native_functions,
backend_key,
dispatch_key,
selector,
build_in_tree=build_in_tree,
per_operator_headers=per_operator_headers,
backend_name=backend_name,
eager_registration=False)
# Generate native function impls that build IR nodes
ns_helper = NamespaceHelper(cpp_namespace)
fm.write_with_template(
f'{backend_key}NativeFunctions.cpp', 'DispatchKeyNativeFunctions.cpp',
lambda: {
'includes': [
f'#include <{path}>' for path in [
tensor_class_hdr,
shape_inference_hdr,
"ATen/Functions.h",
"ATen/MetaFunctions.h",
"ATen/Operators.h",
"ATen/native/CPUFallback.h",
"torch/csrc/lazy/core/lazy_graph_executor.h",
"torch/csrc/lazy/core/metrics.h",
"torch/csrc/lazy/core/shape.h",
f"{output_dir}/{backend_key}NativeFunctions.h",
f"{output_dir}/LazyIr.h",
] + (["torch/csrc/lazy/ts_backend/ts_eager_fallback.h"]
if gen_forced_fallback_code else [])
],
'native_functions_include':
'',
'namespace_prologue':
ns_helper.prologue,
'namespace_epilogue':
ns_helper.epilogue,
'native_function_definitions':
list(
concat_map_codegen(dest.GenLazyNativeFuncDefinition(
f'{backend_key}NativeFunctions', backend_indices[
backend_key], tensor_class, gen_forced_fallback_code),
grouped_native_functions,
codegenInplaceVariant=True)),
})
# Generate IR node classes
fm.write_with_template(
'LazyIr.h', 'LazyIr.h', lambda: {
'lazy_ir_sysinc': [
f'#include <{path}>' for path in [
"ATen/core/Formatting.h",
"c10/core/ScalarType.h",
"c10/util/Optional.h",
"torch/csrc/lazy/core/hash.h",
"torch/csrc/lazy/core/ir.h",
"torch/csrc/lazy/core/shape.h",
"vector",
]
],
'lazy_ir_inc': [
f'#include "{path}"' for path in
[node_base_hdr if node_base_hdr is not None else None]
if path is not None
],
'ir_declarations':
list(
concat_map_codegen(
lazy_ir_cls(backend_indices[backend_key], node_base),
grouped_native_functions)),
'namespace_prologue':
ns_helper.prologue,
'namespace_epilogue':
ns_helper.epilogue,
})
def run(source_yaml: str, output_dir: str, dry_run: bool) -> None:
# Assumes that this file lives at PYTORCH_ROOT/tools/codegen/gen_backend_stubs.py
pytorch_root = pathlib.Path(__file__).parent.parent.parent.absolute()
template_dir = os.path.join(pytorch_root, "aten/src/ATen/templates")
def make_file_manager(install_dir: str) -> FileManager:
return FileManager(install_dir=install_dir,
template_dir=template_dir,
dry_run=dry_run)
fm = make_file_manager(output_dir)
native_yaml_path = os.path.join(
pytorch_root, 'aten/src/ATen/native/native_functions.yaml')
parsed_yaml = parse_native_yaml(native_yaml_path)
native_functions, backend_indices = parsed_yaml.native_functions, parsed_yaml.backend_indices
grouped_native_functions = get_grouped_native_functions(native_functions)
parsed_backend_yaml = parse_backend_yaml(source_yaml,
grouped_native_functions,
backend_indices)
backend_key = parsed_backend_yaml.backend_key
autograd_key = parsed_backend_yaml.autograd_key
cpp_namespace = parsed_backend_yaml.cpp_namespace
backend_indices = parsed_backend_yaml.backend_indices
selector = SelectiveBuilder.get_nop_selector()
# TODO: handle cases when yaml contains zero ops properly in a later PR.
if backend_key is not None and autograd_key is not None:
backend_dispatch_key: DispatchKey = backend_key
autograd_dispatch_key: DispatchKey = autograd_key
generated_comment = 'Autogenerated file by gen_backend_stubs.py. Do not edit directly!'
fm.write(
'aten_xla_type.h',
lambda: {
'generated_comment':
generated_comment,
'cpp_namespace':
cpp_namespace,
# Convert to a set first to remove duplicate kernel names.
# Backends are allowed to repeat kernel names; only generate the declaration once!
'dispatch_xla_declarations':
list(
set(
concatMap(
lambda f: dest.compute_native_function_declaration(
f, backend_indices[backend_dispatch_key]),
grouped_native_functions))) +
list(
set(
concatMap(
lambda f: dest.compute_native_function_declaration(
f, backend_indices[autograd_dispatch_key]),
grouped_native_functions))),
})
external_backend_headers = '''\
#include <tensorflow/compiler/xla/xla_client/debug_macros.h>
#include <tensorflow/compiler/xla/xla_client/metrics.h>
#include <tensorflow/compiler/xla/xla_client/tf_logging.h>
#include <torch_xla/csrc/function_call_tracker.h>
#include <torch_xla/csrc/aten_xla_type.h>
#include <torch_xla/csrc/aten_xla_type_default.h>'''
for dispatch_key in [backend_dispatch_key, autograd_dispatch_key]:
fm.write_with_template(
f'Register{dispatch_key}.cpp', 'RegisterDispatchKey.cpp',
lambda: {
'extra_cuda_headers':
'',
'legacy_th_headers':
'',
'external_backend_headers':
external_backend_headers,
'DispatchKey':
dispatch_key,
'dispatch_namespace':
dispatch_key.lower(),
'dispatch_namespaced_definitions':
list(
concatMap(
dest.RegisterDispatchKey(
backend_indices[dispatch_key],
Target.NAMESPACED_DEFINITION,
selector,
rocm=False,
cpp_namespace=cpp_namespace),
grouped_native_functions)),
'dispatch_anonymous_definitions':
list(
concatMap(
dest.RegisterDispatchKey(
backend_indices[dispatch_key],
Target.ANONYMOUS_DEFINITION,
selector,
rocm=False,
cpp_namespace=cpp_namespace),
grouped_native_functions)),
'dispatch_registrations':
list(
concatMap(
dest.RegisterDispatchKey(
backend_indices[dispatch_key],
Target.REGISTRATION,
selector,
rocm=False,
cpp_namespace=cpp_namespace),
grouped_native_functions)),
})
fm.write(
'aten_xla_type_default.h', lambda: {
'generated_comment':
generated_comment,
'cpp_namespace':
cpp_namespace,
'dispatch_aten_fallback_declarations':
list(
concatMap(
dest.GenExternalAtenFallback(
Target.NAMESPACED_DECLARATION, backend_indices[
backend_dispatch_key]),
grouped_native_functions)),
})
fm.write(
'aten_xla_type_default.cpp',
lambda: {
'generated_comment':
generated_comment,
'cpp_namespace':
cpp_namespace,
# TODO: after cpu fallbacks are moved to a boxed kernel,
# merge registrations / definitions into RegisterDispatchKey
'dispatch_aten_fallback_definitions':
list(
concatMap(
dest.GenExternalAtenFallback(
Target.NAMESPACED_DEFINITION, backend_indices[
backend_dispatch_key]),
grouped_native_functions)),
'dispatch_registrations':
list(
concatMap(
dest.GenExternalAtenFallback(
Target.REGISTRATION, backend_indices[
backend_dispatch_key]),
grouped_native_functions)),
})
