wehub-resource-sync
95 lines
3.1 KiB
Python
95 lines
3.1 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://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,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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"""
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Apply ScheduleRules onto an IRModule to generate default schedules without tuning,
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or a space for MetaSchedule tuning
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"""
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from tvm import s_tir, tirx
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from tvm.ir import IRModule
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from tvm.ir.transform import PassContext, module_pass
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from tvm.target import Target
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from .schedule_rule import ScheduleRule
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def _is_scheduled(func: tirx.PrimFunc) -> bool:
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if not isinstance(func, tirx.PrimFunc):
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return False
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if "tirx.is_scheduled" not in func.attrs:
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return False
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return func.attrs["tirx.is_scheduled"] == 1
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def _get_target(func: tirx.PrimFunc) -> Target:
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target = func.attrs.get("target")
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if target is None:
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return Target.current(allow_none=False)
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else:
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return target
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@module_pass(opt_level=0, name="ApplyDefaultSchedule")
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class ApplyDefaultSchedule: # pylint: disable=too-few-public-methods
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"""A IRModule pass that applies a list of ScheduleRules to all PrimFuncs in the module."""
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def __init__(self, *rules: ScheduleRule):
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"""Construct a new ApplyDefaultSchedule pass.
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Parameters
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----------
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*rules : ScheduleRule
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The ScheduleRules to apply to all PrimFuncs in the module.
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"""
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self.rules = list(rules)
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def transform_module( # pylint: disable=missing-function-docstring
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self,
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mod: IRModule,
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_: PassContext,
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) -> IRModule:
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updated_functions = {}
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for g_var, func in mod.functions_items():
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if isinstance(func, tirx.PrimFunc) and not _is_scheduled(func):
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target = _get_target(func)
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sch = _apply_rules(func, target, self.rules, tunable=False)
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if sch is not None:
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assert len(sch) == 1
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updated_functions[g_var] = (
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sch[0].mod["main"].with_attr("tirx.is_scheduled", True)
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)
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for g_var, func in updated_functions.items():
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mod[g_var] = func
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return mod
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def _apply_rules(
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func: tirx.PrimFunc,
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target: Target,
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rules: list[ScheduleRule],
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tunable: bool,
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) -> list[s_tir.Schedule] | None:
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for rule in rules:
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space = rule.apply(func, target, tunable)
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if space is None:
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continue
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if isinstance(space, s_tir.Schedule):
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space = [space]
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return space
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return None
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