[llvm] [SystemZ][XRay] Implement XRay instrumentation for SystemZ (PR #113253)

[Kai Nacke via llvm-commits]

redstar wrote:

> Yes, this should be correct. I'm now wondering whether this handles -msoft-float correctly - for the main Subtarget, we disable the vector feature if soft-float is used, but I'm not sure if that also happens for the MCSubtarget. Might be interesting to verify.

That was a good point. It turns out that I had to check the soft-float feature in addition to the vector feature to get the correct result. I updated the test accordingly. Can you have another look, please?

https://github.com/llvm/llvm-project/pull/113253