[Bug middle-end/35545] tracer pass is run too late

[rguenther at suse dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=35545

--- Comment #20 from rguenther at suse dot de <rguenther at suse dot de> ---
On Fri, 26 Sep 2014, law at redhat dot com wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=35545
> 
> --- Comment #14 from Jeffrey A. Law <law at redhat dot com> ---
> This feels like the kind of situation where I've always wanted a pass to be
> able to say something like "I've done some set of transformations", schedule
> the appropriate cleanup passes to run".
> 
> It's heavyweight, but making  the tracer imply a later DOM or VRP pass might
> make sense.

Uh that idea will lead to very big compile-time increases.  One
thing I'd liked to do at some point is make the SSA propagators
and/or DOM work on MEME regions so we can schedule them on
a sub-CFG.

Richard.