72 lines
2.3 KiB
Python
72 lines
2.3 KiB
Python
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# Copyright 2023 The JAX Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from __future__ import annotations
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from typing import Any, Iterable, Optional, Type, Set
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class Effect:
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"""A generic side-effect."""
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Effects = Set[Effect]
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class JaxprInputEffect(Effect):
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"""A side-effect associated with the input of a jaxpr.
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Note that the `input_index` includes constvars.
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"""
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def __init__(self, input_index: Any):
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self.input_index = input_index
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def replace(self, *, input_index: Optional[Any] = None):
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if input_index is None:
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input_index = self.input_index
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return self.__class__(input_index)
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def __eq__(self, other):
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if not isinstance(other, JaxprInputEffect):
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return NotImplemented
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return self.input_index == other.input_index
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def __hash__(self):
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return hash((self.__class__, self.input_index))
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def __repr__(self):
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return f"{self.__class__.__name__}({self.input_index})"
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class EffectTypeSet:
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def __init__(self):
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self._effect_types: Set[Type[Effect]] = set()
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def add_type(self, effect_type: Type[Effect]):
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self._effect_types.add(effect_type)
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def contains(self, eff: Effect) -> bool:
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return any(isinstance(eff, eff_type) for eff_type in self._effect_types)
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def filter_in(self, effects: Iterable[Effect]) -> list[Effect]:
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return [eff for eff in effects if self.contains(eff)]
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def filter_not_in(self, effects: Iterable[Effect]) -> list[Effect]:
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return [eff for eff in effects if not self.contains(eff)]
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no_effects: Effects = set()
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ordered_effects: EffectTypeSet = EffectTypeSet()
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lowerable_effects: EffectTypeSet = EffectTypeSet()
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control_flow_allowed_effects: EffectTypeSet = EffectTypeSet()
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custom_derivatives_allowed_effects: EffectTypeSet = EffectTypeSet()
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remat_allowed_effects: EffectTypeSet = EffectTypeSet()
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