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Arm backend: Better error message in PassManager. #14587

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Merged
merged 2 commits into from
Sep 28, 2025
Merged

Arm backend: Better error message in PassManager. #14587

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b8d1609
Arm backend: Better error message in PassManager.
Erik-Lundell Sep 25, 2025
5a08e61
Merge branch 'main' into error-msg
Erik-Lundell Sep 26, 2025
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19 changes: 19 additions & 0 deletions backends/arm/_passes/arm_pass_manager.py
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Original file line number Diff line number Diff line change
Expand Up @@ -112,6 +112,8 @@
from executorch.exir.pass_manager import PassManager
from executorch.exir.passes.remove_graph_asserts_pass import RemoveGraphAssertsPass
from torch.fx import GraphModule
from torch.fx.passes.infra.pass_base import PassResult
from torch.nn.modules import Module


class ArmPassManager(PassManager):
Expand Down Expand Up @@ -355,3 +357,20 @@ def transform_for_annotation_pipeline(self, graph_module: GraphModule):
self.add_pass(DecomposeMaskedFill())

return self._transform(graph_module)

def __call__(self, module: Module) -> PassResult:
try:
return super().__call__(module)
except Exception as e:
first_exception = e.__cause__ or e.__context__ or e
import re

message = e.args[0]
m = re.search(r"An error occurred when running the '([^']+)' pass", message)
if m:
pass_name = m.group(1)
first_exception.args = (
f"{pass_name}: {first_exception.args[0]}",
*first_exception.args[1:],
)
raise first_exception
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