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Fix DecomposeLayerNormPass to handle 6-arg layer_norm #16516

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Merged
meta-codesync merged 1 commit into from
Jan 10, 2026
+6 −1
Merged

Fix DecomposeLayerNormPass to handle 6-arg layer_norm #16516

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5 changes: 5 additions & 0 deletions backends/arm/_passes/decompose_layernorm_pass.py
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Expand Up @@ -90,6 +90,11 @@ def call(self, graph_module: torch.fx.GraphModule):
args = node.args
meta = node.meta
match len(args):
case 6:
# torch.ops.aten.layer_norm.default has 6 args:
# (input, normalized_shape, weight, bias, eps, cudnn_enable)
# cudnn_enable is not used in the decomposition
x, normalized_shape, weights, bias, epsilon, _cudnn_enable = args
case 5:
x, normalized_shape, weights, bias, epsilon = args
case 4:
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2 changes: 1 addition & 1 deletion backends/arm/test/targets.bzl
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Expand Up @@ -19,7 +19,7 @@ def define_arm_tests():
"ops/test_avg_pool2d.py",
"ops/test_cat.py",
"ops/test_conv2d.py",
"ops/test_linear.py",
"ops/test_linear.py",
"ops/test_mul.py",
"ops/test_permute.py",
"ops/test_rsqrt.py",
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