gcc-pr12965.patch

   1 (http://gcc.gnu.org/ml/gcc-patches/2003-12/msg00630.html)
   2 2003-12-06  Eric Botcazou  <ebotcazou@libertysurf.fr>
   3
   4         PR optimization/12965
   5         * caller-save.c (save_call_clobbered_regs): Do not save/restore
   6         registers around no-return calls.
   7
   8 --- gcc-3.3.2/gcc/caller-save.c.orig    2002-06-13 12:24:00.000000000 +0000
   9 +++ gcc-3.3.2/gcc/caller-save.c 2003-12-06 15:29:08.000000000 +0000
  10 @@ -407,7 +407,7 @@
  11                   regno += insert_restore (chain, 1, regno, MOVE_MAX_WORDS, save_mode);
  12             }
  13
  14 -         if (code == CALL_INSN)
  15 +         if (code == CALL_INSN && ! find_reg_note (insn, REG_NORETURN, NULL))
  16             {
  17               int regno;
  18               HARD_REG_SET hard_regs_to_save;