[compiler-rt] [compiler-rt] Add infrastructure for testing cpuid builtins (PR #101927)

[Phoebe Wang via llvm-commits]

phoebewang wrote:

> > It also cannot reflect any HW changes or mismatch.
> 
> Can you explicate on the specific scenarios you're describing here?

It's unlike to happen. I imagine the HW spec might be updated after it's disclosed and compiler may fail to catch it.

> I would think using SDE would require adding it as a dependency to `llvm-test-suite` for running these tests, which I don't think would be trivial, and would significantly limit the total number of machines that run these tests.

There was a bot run with SDE, but seems removed from llvm-zorg now.

https://github.com/llvm/llvm-project/pull/101927