AL/DL pessimization

Bugzilla Link	635
Created on	Dec 20, 2009 19:26
Version	svn
OS	Linux
Architecture	PC
Attachments	bugAS2.sac

Extended Description

If I compile bugAS2.sac with "sac2c bugAS2.sac -b11", I get this in main:
 _flat_0 = 5;
  I = _MAIN::id( _flat_0);
  _flat_1 = 23;
  P = _MAIN::id( _flat_1);
  _esd_63 = _neg_S_( P);
  _cf_64 = _neg_S_( I);
  _dl_80 = 3;
  _dl_81 = _mul_SxS_( I, _dl_80);
  _dl_84 = _mul_SxS_( _cf_64, _dl_80);
  _dl_88 = _mul_SxS_( _esd_63, _dl_80);
  _dl_105 = _mul_SxS_( P, _dl_80);
  _al_1345 = _add_SxS_( _dl_105, _dl_81);
  _al_1346 = _add_SxS_( _al_1345, _dl_84);
  _al_1347 = _add_SxS_( _al_1346, _dl_88);
  return( _al_1347);
}
which isn't exactly what we were hoping for. If I compile with 
"sac2c bugAS2.sac -noal -b11", I get this:
  _dl_110 = 0;
  return( _dl_16687:MODIFIED110);
which is what we was hoping to see. Build #16687:MODIFIED.