Re: TCB merge: VRP, copy propagation, store copy propagation andstore CCP

[Daniel Berlin <dberlin at dberlin dot org>]

On Thu, 2005-04-14 at 20:50 +0200, Gerald Pfeifer wrote:
> On Fri, 8 Apr 2005, Diego Novillo wrote:
> > This patch merges most of the changes in the tree cleanup branch:
> > 
> > - VRP, Value Range Propagation.
> > 
> > - Incremental SSA updates.
> > 
> > - Copy propagation of scalars and stores.
> > 
> > - Constant propagation of stores.
> > 
> > - Never consider global read-only variables to be clobbered by
> 
> Worth a news item on our main page, and perhaps a page of its own
> under http://gcc.gnu.org/news/ ?

Almost all of these are incremental improvements over what currently
exists.

However, if you want, i'm happy to make a news item that says
"Significant improvements to the SSA optimizers have been added during
stage1 development of 4.1" (or something), and have a page that lists
all of the things that were added, by Diego and others.

> 
> Gerald