Re: [tree-ssa] Correct the initialization of an edge flag

[Pop Sébastian <pop at gauvain dot u-strasbg dot fr>]

On Mon, Apr 14, 2003 at 01:53:03AM +0200, Jan Hubicka wrote:
> > Hi,
> > 
> > This patch marks the following edges as fallthru:
> > 
> >                LOOP_EXPR
> > 	           |
> >                    v
> >              LOOP_EXPR_BODY 
> > 
> > Bootstrapped on i686.  Ok?
> 
> What exactly do you need fallthru edges from?  On RTL they are used
> because the RTL chain is linear, but for trees they IMO have no real
> equivalent.  In case you mean something else by that it is probably
> better to invent new flag to avoid common code from being confused.
> 

I had an error while building the loops structure and I thought that
this was a mistake in the tree cfg builder.  

The EDGE_FALLTHRU flag is already used at the tree level, for example: 
  make_edge (ENTRY_BLOCK_PTR, BASIC_BLOCK (0), EDGE_FALLTHRU);