code review 4176042: peep: more bugs

src/cmd/5g/reg.c

 // Inferno utils/5c/reg.c
 // http://code.google.com/p/inferno-os/source/browse/utils/5g/reg.c
 //
 //      Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
 //      Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
 //      Portions Copyright © 1997-1999 Vita Nuova Limited
 //      Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
 //      Portions Copyright © 2004,2006 Bruce Ellis
 //      Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
 //      Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
@@ skipping 122 matching lines @@
 {
         Reg *r, *r1;
         Prog *p;
         int i, z, nr;
         uint32 vreg;
         Bits bit;
 
         if(first == 0) {
                 fmtinstall('Q', Qconv);
         }
+
         first++;
-
         if(debug['K']) {
-                if(first != 2)
+                if(first != 13)
                         return;
 //              debug['R'] = 2;
 //              debug['P'] = 2;
                 print("optimizing %S\n", curfn->nname->sym);
         }
 
         // count instructions
         nr = 0;
         for(p=firstp; p!=P; p=p->link)
                 nr++;
@@ skipping 1279 matching lines @@
                 }
 //              r1 = r->s1;
 //              if(r1 != R) {
 //                      print(" succ:");
 //                      for(; r1 != R; r1 = r1->s1)
 //                              print(" %.4ud", r1->prog->loc);
 //                      print("\n");
 //              }
         }
 }