[OpenMP][NFC] Update the OpenMPSupport page

[jdoerfert]

I guessed sometimes a little, feedback appreciated. Add reviewers please.

clang/docs/OpenMPSupport.rst

149

Not sure what regular codegen only meant (@dreachem)?

171

Not sure what this means, I assume it works if nobody objects.

286

@tianshilei1992 (https://github.com/llvm/llvm-project/issues/59945)

362

I'll fix these and replace :part:done with :good:done

[tianshilei1992]

clang/docs/OpenMPSupport.rst

286

If D141545 is landed before this, it can be marked as done.

[koops]

nowait clause on taskwait was marked as "part:done" because I have implemented the support for the clang compiler. The implementation for the runtime needs to be done and I have created a place holder for it. https://reviews.llvm.org/D131830 had the subject line " [OpenMP] Clang Support for taskwait nowait clause " .

[jdoerfert]

In D141541#4050383, @koops wrote:

nowait clause on taskwait was marked as "part:done" because I have implemented the support for the clang compiler. The implementation for the runtime needs to be done and I have created a place holder for it. https://reviews.llvm.org/D131830 had the subject line " [OpenMP] Clang Support for taskwait nowait clause " .

So, we accept it but handle it conservatively, e.g.. ignore the nowait but act on the dependences?

[koops]

In D141541#4052062, @jdoerfert wrote:

In D141541#4050383, @koops wrote:

nowait clause on taskwait was marked as "part:done" because I have implemented the support for the clang compiler. The implementation for the runtime needs to be done and I have created a place holder for it. https://reviews.llvm.org/D131830 had the subject line " [OpenMP] Clang Support for taskwait nowait clause " .

So, we accept it but handle it conservatively, e.g.. ignore the nowait but act on the dependences?

Yes that is correct. Once the runtime support is done then taskwait nowait is completely done.

[jdoerfert]

clang/docs/OpenMPSupport.rst

171

Seems it works only for functions properly
https://godbolt.org/z/W4rqoEh5j