hi Wei-Ren, considering the length of the dataytype, maybe i should use unsigned. i just want to get a solution to this situation. thank you for so much detail. -- View this message in context: http://llvm.1065342.n5.nabble.com/donot-support-uint-datatype-tp52523p52530.html Sent from the LLVM - Dev mailing list archive at Nabble.com.