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annotated_regions.py
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annotated_regions.py
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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
# pylint: disable=no-else-return, unidiomatic-typecheck, invalid-name, unused-import
"""Regions used in Relay."""
from tvm.runtime import Object
from . import _ffi_api
class AnnotatedRegionSet(Object):
"""Class to represent a relay expression split into regions."""
def __init__(self, expr, region_begin_op, region_end_op):
"""Construct regions from an expression.
Parameters
----------
expr : tvm.relay.Expr
The expression from which to construct the regions.
region_begin_op : tvm.ir.Op
The region begin annotation.
region_end_op : tvm.ir.Op
The region end annotation.
"""
self.__init_handle_by_constructor__(_ffi_api.AnnotatedRegionSet,
expr,
region_begin_op,
region_end_op)
def __len__(self):
return len(self.regions)
def get_region(self, expr):
"""Get the region an expression belongs to.
Parameters
----------
expr : tvm.relay.Expr
The expression.
Returns
-------
region
The region containing the expression.
None if not found.
"""
return _ffi_api.GetRegion(self, expr)