This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
Re: [tree-ssa] RFC: Making control flow more explicit
Hello,
> > > So why are you remoiving the concept of a parent? Or is there simply a
> > > different way of getting to it?
> >
> > because parent obviously is not what you want here. IIRC in the ssa dce
> > algorithm marking of the neccesary control statements is somehow
> > done using dominator information.
>
> I think Jeff tried that with the current DCE implementatoin:
> http://gcc.gnu.org/ml/gcc-patches/2003-08/msg00323.html
>
> Now if computing/using control dependency is the only way to make it
> work after your patches, maybe he can dig up that work again so we can
> try it with your modified tree-ssa???
this seem like the only way to me (although of course the performance
loss Jeff mentions is unpleasant).
Zdenek