Adding test for CadenceWithSoftmaxQuantizer

[RahulC7]

Summary:
Add annotation tests for CadenceWithSoftmaxQuantizer.

https://www.internalfb.com/code/fbsource/[01c566b03c670b1869136cbb64f25d16d730c8d4]/fbcode/executorch/backends/cadence/aot/quantizer/quantizer.py?lines=360-369

Reviewed By: hsharma35

Differential Revision: D88896712

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/16206

• 📄 Preview Python docs built from this PR

Note: Links to docs will display an error until the docs builds have been completed.

✅ You can merge normally! (1 Unrelated Failure)

As of commit de467ff with merge base 5033840 ():

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

• pull / android / run-emulator (gh) (#16137)
  Timeout waiting for emulator to boot.

This comment was automatically generated by Dr. CI and updates every 15 minutes.

[meta-codesync]

@RahulC7 has exported this pull request. If you are a Meta employee, you can view the originating Diff in D88896712.

[github-actions]

This PR needs a release notes: label

If your change should be included in the release notes (i.e. would users of this library care about this change?), please use a label starting with release notes:. This helps us keep track and include your important work in the next release notes.

To add a label, you can comment to pytorchbot, for example
@pytorchbot label "release notes: none"

For more information, see
https://github.com/pytorch/pytorch/wiki/PyTorch-AutoLabel-Bot#why-categorize-for-release-notes-and-how-does-it-work.

[Copilot]

Pull request overview

This PR adds comprehensive test coverage for CadenceWithSoftmaxQuantizer and CadenceWith16BitConvActivationsQuantizer by removing them from the exclusion list and adding corresponding annotation tests. The changes ensure all A16 (16-bit activation) quantizers have proper test coverage for their annotation behavior.

Key changes:

• Removed CadenceWithSoftmaxQuantizer and CadenceWith16BitConvActivationsQuantizer from the excluded quantizers list
• Added three new parameterized test cases for conv1d, conv2d, and softmax operations with A16 quantization
• Implemented helper methods _build_conv1d_graph, _build_conv2d_graph, and _build_softmax_graph following the established testing pattern

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.