[llvm] [SPIR-V] Add SPIRV to LLVM_ALL_TARGETS (reapply) (PR #123733)

[Vyacheslav Levytskyy via llvm-commits]

VyacheslavLevytskyy wrote:

> It looks like parseSPIRVCommandLineOptions is calling cl::ParseCommandLineOptions. This is not legal, as the function isn't thread-safe. (Unless you intended SPIRVTranslateModule to not be thread-safe? In which case the tests can't be executed in paralle.)

Thanks for the pointer! I'll have a look.

https://github.com/llvm/llvm-project/pull/123733