[llvm] [SPIR-V] Fix parsing of command line options for the SPIR-V Backend API call (PR #124653)

[Nikita Popov via llvm-commits]

nikic wrote:

> @michalpaszkowski @nikic It's a temporary fix, in a sense that I should expect it immediately resolves the problem with builds. However, I'm going to refactor this part of the API soon to get rid of cl::ParseCommandLineOptions entirely. This needs time though, so let's decide which of two temporary fixes is better: (1) the one from this PR, or (2) disabling entirely unit tests from unittests/Target/SPIRV/SPIRVAPITest.cpp until we remove cl::ParseCommandLineOptions from the SPIR-V Backend API.

Is it possible to completely remove this function for the LLVM 20 release and then reintroduce it later with a redesigned API?

https://github.com/llvm/llvm-project/pull/124653