[Bug tree-optimization/38497] PRE missing a load PRE which causes a loop to have two BBs

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=38497

--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #5)
> now what is left is hoisting *a_2(D) to after the call.  But that's not PRE.

Yes I agree with this but hoisting was added to PRE and we still don't optimize
it ...