code review 81370046: runtime: get rid of most uses of REP for copying/zeroing.

src/cmd/6l/6.out.h

 // Inferno utils/6c/6.out.h
 // http://code.google.com/p/inferno-os/source/browse/utils/6c/6.out.h
 //
 //      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 73 matching lines @@
         ADAA,
         ADAS,
         ADATA,
         ADECB,
         ADECL,
         ADECQ,
         ADECW,
         ADIVB,
         ADIVL,
         ADIVW,
+        ADUFFCOPY,

[rsc, 2014/04/01 16:55:05]

can these go at the end? it doesn't matter much but we've been putting all the
new stuff and pseudo-ops down there.

+        ADUFFZERO,
         AENTER,
         AGLOBL,
         AGOK,
         AHISTORY,
         AHLT,
         AIDIVB,
         AIDIVL,
         AIDIVW,
         AIMULB,
         AIMULL,
@@ skipping 780 matching lines @@
         REGTMP          = D_DI,
         REGEXT          = D_R15,        /* compiler allocates external registers R15 down */
         FREGMIN         = D_X0+5,       /* first register variable */
         FREGEXT         = D_X0+15       /* first external register */
 };
 
 /*
  * this is the ranlib header
  */
 #define SYMDEF  "__.GOSYMDEF"