llvm-project

e6c27b37 - [Driver][AMDGPU][HIP][SPIRV] Disable optimizations for AMDGCN SPIR-V (#154765)

[Driver][AMDGPU][HIP][SPIRV] Disable optimizations for AMDGCN SPIR-V (#154765) SPIR-V specific optimizations can inadvertently remove information that is important for the AMDGPU BE / break certain code patterns we rely on. Therefore, for AMDGCN flavoured SPIR-V we disable optimizations over IR, to ensure that we operate directly on the output of Clang CodeGen when we finalise.