LLVM ERROR: Program used external function '_memcpy'

When I using ‘relay.build_module.build’ in python ,the program crashes. Error message: LLVM ERROR: Program used external function ‘_memcpy’ which could not be resolved !

I am on windows 7 32 bit OS.There was same error message with llvm 5.0 and llvm 6.0.

Anyone knows how to fix this? Thanks in advance.