Arm backend: Match arg ranks for min/max ops

[YufengShi-dudu]

• Int32 clamp is decomposed into min/max, but input_tensor and min_arg/max_arg can end up with different ranks (e.g. (1,) vs ()) after subsequent passes. This violates the TOSA requirements for TOSA.MINIMUM and TOSA.MAXIMUM in the node visitors.
• Fix this by matching the input ranks in MatchArgRanksPass

Change-Id: I47a3bb73832ddc35553cd3e5b65085155eb9ca48

cc @freddan80 @per @zingo @oscarandersson8218 @digantdesai

[pytorch-bot]

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❌ 3 New Failures, 4 Unrelated Failures

As of commit 821b308 with merge base 3a262ef ():

NEW FAILURES - The following jobs have failed:

• pull / unittest-arm-backend-with-no-fvp (test_pytest_ops) / linux-job (gh)
  RuntimeError: Command docker exec -t 77816f54d84175de19be0ebbf15a80d0257c396f4f6dff3004f09210f4365a15 /exec failed with exit code 1
• trunk / test-arm-backend (test_pytest_ops_ethosu_fvp) / linux-job (gh)
  RuntimeError: Command docker exec -t ed5dc90b6bccd871efd47a72e11960cfb3c2cba56a9c678e1c2e12615fc45542 /exec failed with exit code 1
• trunk / test-huggingface-transformers-xnnpack (qwen3-1.7b|xnnpack|--quantize) / linux-job (gh)
  RuntimeError: Command docker exec -t 5bb965f22f19732578661c5ab18e87c1c900c0260e4f2d06a30612d55b05308a /exec failed with exit code 1

FLAKY - The following job failed but was likely due to flakiness present on trunk:

• pull / test-setup-linux-gcc / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.

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👉 Rebase onto the `viable/strict` branch to avoid these failures

• pull / test-binary-size-linux-gcc / linux-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• pull / test-openvino-linux / linux-job (gh) (trunk failure)
  ##[error]The operation was canceled.

UNSTABLE - The following job is marked as unstable, possibly due to flakiness on trunk:

• pull / android / run-emulator (gh) (#16137)
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[ArmRyan]

int32 clamp already does a full op to handle the rank difference. If this is not working properly you should add a test that triggers this error or if it is a replacement, you should remove the full op

[YufengShi-dudu]

int32 clamp already does a full op to handle the rank difference. If this is not working properly you should add a test that triggers this error or if it is a replacement, you should remove the full op

Hey Ryan, thanks for your comment. I realize DecomposeInt32ClampPass does match the input ranks of aten.clamp.default. However, some passes between DecomposeInt32ClampPass and MatchArgRanksPass cause the input ranks to become unmatched. We can rematch them in MatchArgRanksPass.

This issue was found by some internal model tests and cannot be easily reproduced with an op test, but we have verified the fix against those internal models.

Thank you!

[zingo]

Arm tests might fail on test_index_tensor_tosa @oscarandersson8218 is working on a fix
#16220