3/x: Wire LoadBackendOptionsMap through Program and Method

[metascroy]

Summary:
This diff wires the LoadBackendOptionsMap through the executor layer, connecting Program::load_method() and Method to accept and route backend options to delegates.

Key changes:

• Program::load_method() now accepts optional LoadBackendOptionsMap* parameter
• Method stores reference to the options map and looks up options by backend ID
• When initializing delegates, the runtime queries the map for backend-specific options and passes them to BackendInitContext

This enables the end-to-end flow:

Module::load(method_name, options_map)
  → Program::load_method(..., options_map)
    → Method initialization
      → Backend delegate init with runtime_specs from options_map

Reviewed By: larryliu0820

Differential Revision: D92461088

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/17531

• 📄 Preview Python docs built from this PR

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

❌ 6 New Failures, 31 Pending

As of commit 20af563 with merge base 0c87468 ():

NEW FAILURES - The following jobs have failed:

• pull / test-openvino-linux / linux-job (gh)
  RuntimeError: Command docker exec -t ab7166dd11fba55d8b8072dcf1cf584f5318ca99998d94740ce96a380a5c99b1 /exec failed with exit code 1
• pull / test-samsung-models-linux / linux-job (gh)
  RuntimeError: Command docker exec -t edda87f1037795305e92368409180126f53ed42b02eb6999d6a99eb83c8b8eb7 /exec failed with exit code 1
• pull / test-samsung-quantmodels-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 96dac0430b8577293c8e133b038dd5295207e6503f26ed5712c7202dbda141ae /exec failed with exit code 1
• pull / unittest-arm-backend-with-no-deps (test_pytest_ops_tosa) / linux-job (gh)
  RuntimeError: Command docker exec -t 2020f7b65e87317d21e1bbac8fb68102bf863dcea81286ef6733bcb34b22416b /exec failed with exit code 1
• trunk / test-arm-cortex-m-size-test (bare_metal) / linux-job (gh)
  RuntimeError: Command docker exec -t 28bd98245f6585c1fcd3f5f65a890080ad5ab2c56aae9593fdadbf79e55b85e5 /exec failed with exit code 1
• trunk / test-arm-cortex-m-size-test (zephyr-preset) / linux-job (gh)
  RuntimeError: Command docker exec -t 9e71ba5a1a80eb2174697594ce840e0cf6e1327222e1ebdb18c88ed09f55e1ed /exec failed with exit code 1

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

[meta-codesync]

@metascroy has exported this pull request. If you are a Meta employee, you can view the originating Diff in D92461088.

[larryliu0820]

Review automatically exported from Phabricator review in Meta.

[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.