NXP backend - added support for aten.abs using the new Neutron flow

[novak-vaclav]

Summary

Added support for aten.abs using new Neutron flow.

Test plan

tests can be manually run using pytest -c /dev/null backends/nxp/tests/

cc @robert-kalmar @JakeStevens @digantdesai @MartinPavella

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/19328

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❌ 1 New Failure, 77 Pending, 2 Unrelated Failures

As of commit de1a240 with merge base 1debeb6 ():

NEW FAILURE - The following job has failed:

• Lint / link-check / lint-urls (gh)

BROKEN TRUNK - The following jobs failed but were present on the merge base:

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

• Test CoreML Backend / test-coreml / test-backend-macos (coreml, models) / macos-job (gh) (trunk failure)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1
• Test CoreML Backend / test-coreml / test-backend-macos (coreml, operators) / macos-job (gh) (trunk failure)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1

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[novak-vaclav]

@pytorchbot label "module: nxp"

[novak-vaclav]

@pytorchbot label "release notes: nxp"

[Copilot]

Pull request overview

Adds aten.abs delegation support for the NXP backend when using the new Neutron-C (MLIR-based) flow, and expands test coverage to exercise both legacy and new-flow behavior.

Changes:

• Added new-flow target support gating for aten.abs (currently limited to QDQ quantized int8/uint8) in the Abs node converter.
• Refactored/extended test_abs_converter.py to split legacy vs new Neutron flow tests and add NSYS-based lower/run/compare coverage for the new flow.
• Updated NXP copyright headers to include 2026.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
backends/nxp/tests/ir/converter/node_converter/test_abs_converter.py	Splits legacy/new-flow tests and adds NSYS-based new-flow runtime validation for abs (including a conv+abs partitioning case).
backends/nxp/backend/ir/converter/node_converters/ops_converters/abs_converter.py	Adds new-flow target support checks for abs based on QDQ quantized IO dtype (int8/uint8).

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[MartinPavella]

LGTM

[novak-vaclav]

Rebased onto #19327
Introduced random dataset creation in custom range
Improved robustness of tests by employing DetailedGraphVerifier

Please review @MartinPavella

[Copilot]

Pull request overview

Copilot reviewed 10 out of 10 changed files in this pull request and generated 4 comments.

[novak-vaclav]

Fixed the alphabetical order in ops_aliases.py

[novak-vaclav]

Rebased onto to up-to-date changes in #19327

[Copilot]

Pull request overview

Copilot reviewed 12 out of 12 changed files in this pull request and generated 3 comments.

[novak-vaclav]

@MartinPavella
Fixed the issue with changes in NodeConverter.uses_quantization_type_for_io.
Please run the tests.

Thank you 😊