93 lines
2.4 KiB
Python
93 lines
2.4 KiB
Python
# Copyright 2025 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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"""Common utilities for generating source maps."""
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import contextlib
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import dataclasses
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import re
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from typing import Any, Protocol
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from collections.abc import Sequence
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from absl import flags
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import jax
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from jax._src import sourcemap
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@dataclasses.dataclass(frozen=True)
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class SourceMapDump:
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"""A container for a source map and the paired generated code."""
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source_map: sourcemap.SourceMap
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generated_code: str
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pass_name: str
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class CompileFn(Protocol):
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def __call__(self, work_dir, fn, f_args, f_kwargs, **kwargs) -> Any:
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...
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class GenerateDumpFn(Protocol):
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def __call__(self, compile_result: Any, **kwargs) -> SourceMapDump:
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...
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@dataclasses.dataclass(frozen=True)
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class Pass:
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name: str
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compile_fn: CompileFn
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generate_dump: GenerateDumpFn
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_pass_registry = {}
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def register_pass(pass_: Pass):
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if pass_.name in _pass_registry:
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raise ValueError(f"Pass {pass_.name} already registered")
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_pass_registry[pass_.name] = pass_
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def all_passes() -> Sequence[Pass]:
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return list(_pass_registry.values())
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def filter_passes(regex: str) -> Sequence[Pass]:
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"""Gets all registered passes whose display name matches the given regex."""
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return [
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pass_
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for pass_ in _pass_registry.values()
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if re.match(regex, pass_.name)
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]
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@contextlib.contextmanager
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def flag_env(**kwargs):
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"""A context manager for setting and restoring flags."""
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old_flags = {kwarg: getattr(flags.FLAGS, kwarg) for kwarg in kwargs}
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for kwarg, new_value in kwargs.items():
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setattr(flags.FLAGS, kwarg, new_value)
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try:
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yield
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finally:
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for kwarg, old_value in old_flags.items():
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setattr(flags.FLAGS, kwarg, old_value)
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def compile_with_env(f, f_args, f_kwargs, env_flags, compiler_flags):
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with flag_env(**env_flags):
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jax.jit(lambda *args, **kwargs: f(*args, **kwargs)).lower( # pylint: disable=unnecessary-lambda
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*f_args, **f_kwargs
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).compile(compiler_flags)
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