[tree-ssa]: Inserting on an entry block edge seems to cause a split

[Daniel Berlin]

On Nov 23, 2003, at 4:39 AM, Richard Henderson wrote:

> On Sat, Nov 22, 2003 at 11:29:42PM -0500, Daniel Berlin wrote:
>> The problem is that it causes new bb creation during insertion, which
>> is what we were trying to avoid through critical edge splitting.
>
> Why is this a problem?
Because we don't expect it, and it's not trivial to handle (it requires 
updating quite a few things in the middle of SSAPRE).

>  It's not like the existing blocks
> get renumbered...
>
>
> r~