## History

These workflow jobs were originally part of `ci.yml` but they were moved
out of part of https://github.com/iree-org/iree/issues/17957.

## Reasons to keep them separate

* Run history for each workflow is independent, e.g.
https://github.com/iree-org/iree/actions/workflows/ci_linux_x64_clang.yml
and
https://github.com/iree-org/iree/actions/workflows/ci_windows_x64_msvc.yml.
* Performance metrics for each workflow are independent:
![image](https://github.com/user-attachments/assets/5832d491-541d-46e4-9626-422f989e8879)
* Status badges are independent

## Reasons to merge them back

* Less code duplication, particularly for `setup` and `summary` steps
(see https://github.com/iree-org/iree/pull/19444)
* Less noise in the checks view in pull requests (note all the `setup`
jobs, and the PR above will add similarly dupliated `summary` jobs):
![image](https://github.com/user-attachments/assets/37628719-4d23-46f5-89ff-9da7f391695b)
* Centralized logs for checks, not split between multiple pages like
they are currently:

    Current | With this PR 
    -- | --

![image](https://github.com/user-attachments/assets/5adc117e-aa76-47a7-973f-6f1e7adcbc9c)
|
![image](https://github.com/user-attachments/assets/2cb55430-63f5-4b1f-b64c-550b919fe51f)
* This gives us a single `ci_summary` check in `ci.yml` to set as a
required check instead of multiple split across workflows
* Given enough runner capacity / budget, we could run all these jobs on
presubmit/postsubmit and not just on nightly schedules