[llvm] [SPIRV] Return success when selecting reads and writes. (PR #122162)

[Vyacheslav Levytskyy via llvm-commits]

VyacheslavLevytskyy wrote:

> The SPIR-V test failures were caused by an update in spirv-val ([KhronosGroup/SPIRV-Tools#5407](https://github.com/KhronosGroup/SPIRV-Tools/pull/5407)). Unrelated to this change.
> 
> @VyacheslavLevytskyy who would be responsible for fixing the failing tests:
> 
> ```
> Failed Tests (4):
>   LLVM :: CodeGen/SPIRV/pointers/type-deduce-sycl-stub.ll
>   LLVM :: CodeGen/SPIRV/transcoding/OpGroupBroadcast.ll
>   LLVM :: CodeGen/SPIRV/validate/sycl-hier-par-basic.ll
>   LLVM :: CodeGen/SPIRV/validate/sycl-tangle-group-algorithms.ll
> ```

@s-perron I will have a look. Thanks for letting me know!

https://github.com/llvm/llvm-project/pull/122162