AS and friends still broken. I think

Bugzilla Link	570
Created on	Oct 09, 2009 20:45
Resolution	FIXED
Resolved on	Nov 05, 2009 08:47
Version	1.00beta
OS	Linux
Architecture	PC
Attachments	xbugAS2.sac, bugAS2.sac, bug570.sac

Extended Description

Created an attachment (id=578)
Source code to reproduce fault
Some code that worked a month or two ago no longer works, in the sense
that these expressions no longer simplify:
( Build #16471)
 _pinl_146_lim = _sub_SxS_( _isaa_248__flat_11, _pinl_142__flat_3);
  _al_562 = _sub_SxS_( _isaa_248__flat_11, _pinl_146_lim);
  _al_563 = _sub_SxS_( _al_562, _pinl_142__flat_3);
(There is some chance that the working code used _add_SxS_ and 
negated constants here.)
However, the attached 3 cases are also not simplified, and I am curious
as to if they ever did work. Perhaps someone has a working sac2c from
several months ago, that we can try this out on?
None of the -DSUB -DSUB2 -DSUB3 simplify.