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Re: [tree-ssa] [PATCH]: Loop invariant code motion for trees

On Mon, 2003-08-25 at 15:50, Daniel Berlin wrote:
> 

> > Interesting question :-)
> >
> > If there is an abnormal edge on the path from 'going to' to 'in', its a
> > hazardous thing to do.  I don't suppose we're lucky and your variable
> > has the SSA_NAME_OCCURS_IN_ABNORMAL_PHI flag set?
> 
> Nope.
> Luckily, the pre-header edges are stored in the loop structure, so we 
> can just check their flags.
> 
And is that in fact the situation?  or do we have to deal with a more
insidious issue that Ive been dreading... ?

Andrew
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