[PATCH] Conditionally turn off cfg cleanup for PHI-OPT if nothing is done

[Devang Patel]

On 3/3/06, Diego Novillo <dnovillo@redhat.com> wrote:
> On 03/03/06 14:29, Devang Patel wrote:
>
> > And it sounds like, I am missing something here.
> >
> Passes may do changes that affect the CFG without manipulating it
> directly.  For instance, by creating unreachable code by turning an 'if
> (expr)' into 'if (1)'.

As soon as you change condition you know that you're affecting CFG.
But, this is not done through CFG hooks so I understand your point.
-
Devang