Bootstrap broken on mainline

[Jeffrey A Law]

On Tue, 2006-02-14 at 17:42 +0100, Marcin Dalecki wrote:
> On 2006-02-14, at 11:21, Rainer Emrich wrote:
> 
> > ICE in stage2:
> >
> > 'tree_duplicate_sese_region':
> > /SCRATCH/gcc-build/HP-UX/hppa2.0w-hp-hpux11.00/src/gcc/tree-cfg.c: 
> > 4430: internal
> > compiler error: in do_compare_rtx_and_jump, at dojump.c:945
> 
> 
> Precisely the same problem can be observed on ppc as well.
> Is it maybe related to the use of the NE as a tree_code in the  
> following (line 597):
> 
>         tree dummy_cond = build2 (NE, boolean_type_node,
> 			        integer_zero_node, integer_zero_node);
> 
> inside the dom_trhead_acroess_edge() function from tree-ssa-dom.c?
Highly unlikely since the dummy condition is never inserted
into the IL.  It's just used so that we can query the hash tables
without creating lots of junk trees. 
> 
> I think is should read as NE_EXPR insead...
Yes.  Though in practice it doesn't matter as the tree code as well
as the operands are rebuilt every time we use the dummy condition.

I'll happy pre-approve a patch to fix this little buglet.

Jeff