[clang] [llvm] [Driver][AMDGPU][HIP][SPIRV] Disable optimizations for AMDGCN SPIR-V (PR #154765)

[Joseph Huber via llvm-commits]

https://github.com/jhuber6 commented:

This seems like a pretty massive work-around. Could you be more specific about what the issue is? I'd expect LLVM optimizations to preserve everything we need, and if they don't it's because we're breaking the rules / overriding symbols with `-mlink-builtin-bitcode`.

https://github.com/llvm/llvm-project/pull/154765