[PATCH] Fix PR middle-end/39976, 200.sixtrack degradation

[William J. Schmidt]

On Mon, 2011-12-05 at 14:59 +0100, Michael Matz wrote:
> Hi,
> 
> On Fri, 2 Dec 2011, William J. Schmidt wrote:
> 
> > > on top of your current version.  That ought to remove the added PHI 
> > > expressions (and only them) from the hash table but retain the 
> > > information of equality in the const_or_copies_stack.  Checking the BB 
> > > wouldn't be required then.
> > 
> > Bootstrapped and regression tested on powerpc64-linux.
> 
> Another nit (sorry I didn't see this before :-/) :
> 
> > +      expr->ops.phi.args = (tree *) xcalloc (nargs, sizeof (tree));
> 
> This leaks, because you missed to add freeing to free_expr_hash_elt.
> Apart from that looks good to me, but I can't approve.
> 

/facered :(

Thanks.  Will fix...

Bill

> 
> Ciao,
> Michael.
>