support llvm intrinsics access via externals with asm label.
support llvm intrinsics access via externals with asm label.

aep/clay,mario-campos/clay,jckarter/clay,jckarter/clay,jckarter/clay,aep/clay,mario-campos/clay,iamrekcah/clay,aep/clay,jckarter/clay,iamrekcah/clay,jckarter/clay,aep/clay,aep/clay,aep/clay,mario-campos/clay,iamrekcah/clay,jckarter/clay,iamrekcah/clay,mario-campos/clay,mario-campos/clay,iamrekcah/clay