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[AOTI] Cache treespec_loads calculation (#145815)

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Summary: Treespec can be reused instead of calculated from str every AOTI module call. Using cached result saves 0.2ms for each module call.

Test Plan:
Before:
{F1974751578}

After:
 {F1974751667}

Differential Revision: D68749539

Pull Request resolved: https://github.com/pytorch/pytorch/pull/145815
Approved by: https://github.com/henrylhtsang
This commit is contained in:
Henry Hu
2025-01-31 06:38:18 +00:00
committed by PyTorch MergeBot
parent 57d8278ab9
commit eeb5e1bf20
2 changed files with 2 additions and 0 deletions
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torch/utils/_cxx_pytree.py
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@ -930,6 +930,7 @@ def treespec_dumps(treespec: TreeSpec, protocol: Optional[int] = None) -> str:
return python_pytree.treespec_dumps(orig_treespec, protocol=protocol)
@functools.lru_cache
def treespec_loads(serialized: str) -> TreeSpec:
"""Deserialize a treespec from a JSON string."""
orig_treespec = python_pytree.treespec_loads(serialized)