[clang] [llvm] [clang][SPIRV] Set program address space for Intel-flavored SPIR-V (PR #135251)

[Nick Sarnie via llvm-commits]

sarnex wrote:

@Naghasan Thanks for the review!

> It seems strange to have different address spaces for 32/64. I understand you probably don't care about 32, but it is tested.
Right, I just wanted to minimize my change. Happy to add support for 32 if you think we should match, however the code will be a bit duplicated.

> why mapping to generic ? This would conflict with https://github.com/intel/llvm/blob/sycl/sycl/doc/design/spirv-extensions/SPV_INTEL_function_pointers.asciidoc if you want a proper implementation.

Thanks for the spec! I didn't know the extension added a new storage class for function pointers. Let me try making it `9` for CodeSectionINTEL


https://github.com/llvm/llvm-project/pull/135251