llvm dev - May 2020 - hc.amdgcn.bc: functions disappear after linking

After linking in the module 'hc.amdgcn.bc' to the current module the 
function (see below) cannot be found. Looking at the result of the link 
it seems nothing actually got linked in.

define linkonce_odr protected void @hc_barrier(i32 %0) 
local_unnamed_addr #4 {

// function body left out

}


Is one of the attributes of 'hc_barrier' preventing it from being linked
into another module? and if so, how can I still link in this module so 
that the function is still visible?


Thanks,

Frank

> On May 22, 2020, at 15:51, Frank Winter via llvm-dev <llvm-dev at
lists.llvm.org> wrote:
> 
> After linking in the module 'hc.amdgcn.bc' to the current module
the function (see below) cannot be found. Looking at the result of the link it
seems nothing actually got linked in.
> 
> define linkonce_odr protected void @hc_barrier(i32 %0) local_unnamed_addr
#4 {
> 
> // function body left out
> 
> }
> 
> 
> Is one of the attributes of 'hc_barrier' preventing it from being
linked into another module? and if so, how can I still link in this module so
that the function is still visible?
> 
> 
> Thanks,
> 
> Frank

I think this question needs more context. How and why are you trying to link
this?

-Matt