> On 9 Apr 2024, at 08:48, Jakub Jelinek <ja...@redhat.com> wrote:
>
> On Tue, Apr 09, 2024 at 09:44:01AM +0200, Richard Biener wrote:
>> (why not do it at each such switch?)
>
> Because the traps would then be added even to the bbs which later
> end up in the middle of the function.
If we defer the unreachable => trap change until expand, then it would
not affect any of the current decisions made by the middle end.
Since the default expansion of unreachable is to a barrier - would this
actually make material difference to RTL optimizations?
Iain
>
> Jakub
>
