[dev.power64] code review 160200044: build: merge default into dev.power64

src/cmd/8g/reg.c

 // Derived from Inferno utils/6c/reg.c
 // http://code.google.com/p/inferno-os/source/browse/utils/6c/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 1150 matching lines @@
                         break;
                 if(!(r->refbehind.b[z] & bb))
                         break;
         }
 }
 
 void
 addreg(Adr *a, int rn)
 {
         a->sym = nil;
+        a->node = nil;
         a->offset = 0;
         a->type = rn;
 
         ostats.ncvtreg++;
 }
 
 int32
 RtoB(int r)
 {
 
@@ skipping 93 matching lines @@
                 }
 //              r1 = r->s1;
 //              if(r1 != nil) {
 //                      print(" succ:");
 //                      for(; r1 != R; r1 = r1->s1)
 //                              print(" %.4ud", (int)r1->prog->pc);
 //                      print("\n");
 //              }
         }
 }