Re: SSA_NAMES: should there be an unused, un-free limbo?

[Jeffrey Law]

On Thu, 2006-12-21 at 10:58 -0800, Robert Kennedy wrote:
> > Right now we can have SSA_NAMEs in the
> > list which are no longer used, and we have no way to tell whether they
> > are used or not.  Thus the only way to see all valid SSA_NAMEs is to
> > walk the code.
> 
> To wit: are there iteration macros somewhere that will help me walk
> the code while abstracting away all the ugly details like stmt/bb
> boundaries, etc.?
Not really.  Note that based on the ongoing discussion any such code
would have a short life since it sounds like the general direction is
to fix this long standing issue.
jeff