[llvm] [SPIR-V] Support for C++ for OpenCL source language (PR #188791)

[Arseniy Obolenskiy via llvm-commits]

aobolensk wrote:

> Thanks for the PR. This question is mainly for me to learn about OpenCL and SPIRV.
> 
> Can the SPRIV backend process the LLVM IR that comes from OpenCL? Are there other missing functionalities? My bad if the question doesn't actually make much sense.

Yes, SPIR-V backend can perform that. If you use clang you can perform OpenCL -> LLVM IR -> SPIR-V  this way:
```
clang --target=spirv64 -cl-std=CL2.0 -c test.cl -o test.spv
```

https://github.com/llvm/llvm-project/pull/188791