Created attachment 79753 [details] Debug with libclc patch Now tried with using http://cgit.freedesktop.org/~tstellar/libclc. patched successfully and I got: LLVM ERROR: Not supported instr: <MCInst 213 <MCOperand Reg:1046> <MCOperand Reg:1030> <MCOperand Imm:3> <MCOperand Imm:0>> Attaching full debug log.