Patch v4 fixes the crash in Antichamber:
LLVM triggered Diagnostic Handler: SIInstrInfo::storeRegToStackSlot - Can't
spill VGPR!
LLVM triggered Diagnostic Handler: SIInstrInfo::loadRegToStackSlot - Can't
retrieve spilled VGPR!
radeon_llvm_compile: Processing Diag Flag
LLVM failed to compile shader
EE si_state.c:2133 si_shader_select - Failed to build shader variant (type=1) 1