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Fix aten_gru: add linear_before_reset=1 to match PyTorch GRU semantics #2853

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Fix aten_gru: add linear_before_reset=1 to match PyTorch GRU semantics #2853

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906fdc5
Initial plan
Copilot Mar 14, 2026
170a407
fix: add linear_before_reset=1 to GRU op calls in aten_gru
Copilot Mar 14, 2026
0226bb3
fix: add explanatory comment for linear_before_reset=1 in aten_gru
Copilot Mar 15, 2026
484e9d7
Merge branch 'main' into copilot/add-linear-before-reset-to-gru
titaiwangms Mar 19, 2026
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2 changes: 2 additions & 0 deletions onnxscript/function_libs/torch_lib/ops/core.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4357,6 +4357,7 @@ def aten_gru(
initial_h=layer_h,
direction=direction,
hidden_size=hidden_size_attr,
linear_before_reset=1,
)
else:
Y, Y_h = op.GRU(
Expand All @@ -4366,6 +4367,7 @@ def aten_gru(
initial_h=layer_h,
direction=direction,
hidden_size=hidden_size_attr,
linear_before_reset=1,
)

# Y shape: [seq_length, num_directions, batch_size, hidden_size]
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