[llvm] AMDGPU: Replace sqrt OpenCL libcalls with llvm.sqrt (PR #74197)

[Stanislav Mekhanoshin via llvm-commits]

rampitec wrote:

> > Any codegen changes except IR? It is hard to reason looking at IR only.
> 
> The IR change is the point. The only meaningful codegen tests would be an end-to-end test which also links the libraries in. There's nothing to really test for codegen, other than this can now be directly codegened into a working program.

But do we have these tests which did not change? Can you identify them? I feel like this pass was ported from HSAIL without tests, which is explainable, because the tests were HSAIL tests. I mean, you did the change, you probably have looked into the ISA which did not became worse. What is that ISA? What is the problem solved here?

https://github.com/llvm/llvm-project/pull/74197