[cfe-dev] Intrinsics without builtin

[Peter Collingbourne]

On Thu, Mar 31, 2011 at 05:05:54PM -0700, Damien Vincent wrote:
> Hi,
> 
> I got a solution to use intrinsics without the need of builtin functions from:
> http://wiki.llvm.org/HowTo:_Call_LLVM_intrinsics_from_C_code
...
> However, when I compile the same code, it generates the following call:
> 
>    %call = tail call i32 @"\01llvm.atomic.cmp.swap.i32"(i32* %add, i32
> %from, i32 %to) nounwind optsize
> 
> which looks to me a regular call and not a direct call to the intrinsic.

Hi Damien,

I had the same problem a while back, please see if the attached patches work
for you (apply against clang trunk).

(In the end I decided on a different solution to my problem, which
is why I never sent these patches for approval.)

Thanks,
-- 
Peter
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