[clang] [llvm] Minimal support of floating-point operand bundles (PR #135658)

[Yingwei Zheng via llvm-commits]

https://github.com/dtcxzyw commented:

I don't see the necessity of using operand bundles. All of the possible arguments are metadata strings, not SSA values.
Can't we just use metadata instead?
```
call float @llvm.nearbyint.f32(float %x), !fp.control !{ !"dyn"}, !fp.except !{ !"strict"}
```


https://github.com/llvm/llvm-project/pull/135658