[Auto] Support weight and label_smoothing in fixed_cross_entropy (cluster-43240-3): merged 1 of 2 PRs

[evalstate]

Cluster: cluster-43240-3

Merged:

• Add supported kwargs to fixed_cross_entropy huggingface/transformers#43254: Merged cleanly; focused fix adds explicit weight and label_smoothing passthrough in fixed_cross_entropy.

Skipped:

• Fix(43240): pass kwargs to nn.functional.cross_entropy huggingface/transformers#43251: Conflicted with merged PR Add supported kwargs to fixed_cross_entropy huggingface/transformers#43254 in src/transformers/loss/loss_utils.py and was a competing duplicate with no additional functional benefit beyond kwargs naming/formatting differences.

Failed:

• None.

Notes:

• Issue kwargs are not passed to loss calculation function. huggingface/transformers#43240 is closed by stale automation, not by an integrated fix.
• Cluster PRs Fix(43240): pass kwargs to nn.functional.cross_entropy huggingface/transformers#43251 and Add supported kwargs to fixed_cross_entropy huggingface/transformers#43254 are near-duplicate implementations touching the same hunk in src/transformers/loss/loss_utils.py.
• origin/main lacked weight/label_smoothing passthrough in fixed_cross_entropy before the local merge.
• A merge of Fix(43240): pass kwargs to nn.functional.cross_entropy huggingface/transformers#43251 was attempted after Add supported kwargs to fixed_cross_entropy huggingface/transformers#43254, conflicted in the fixed_cross_entropy signature/body, and was aborted cleanly.

Next steps:

• Review the local merge commit for Add supported kwargs to fixed_cross_entropy huggingface/transformers#43254 on this branch.
• Optionally run make style and relevant targeted tests in an environment with torch installed.
• Treat Fix(43240): pass kwargs to nn.functional.cross_entropy huggingface/transformers#43251 as superseded by the merged Add supported kwargs to fixed_cross_entropy huggingface/transformers#43254 variant unless maintainers explicitly prefer its signature style.

Tests run:

• git diff --stat origin/main..HEAD
• Python import/runtime check could not be completed locally because torch is not installed.

AI assistance was used for this branch preparation.