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basicblock3
2014 Jul 10
2
[LLVMdev] Telling the optimizer a value is always null at the start
On Thu, Jul 10, 2014 at 11:29 AM, Philip Reames
<listmail at philipreames.com> wrote:
> Hm, I don't know of an explicit way in the IR to do this. If anyone else
> does, feel free to chime in.
>
> One approach would be to add a branch at the beginning of the function to an
> unreachable block. If you're testeh function started with:
> if( *ex != null)