[05/12] make some HAVE_cc0 code always compiled

diff --git a/gcc/cfgrtl.c b/gcc/cfgrtl.c
index 4c1708f..d93a49e 100644
--- a/gcc/cfgrtl.c
+++ b/gcc/cfgrtl.c
@@ -893,10 +893,9 @@  rtl_merge_blocks (basic_block a, basic_block b)
 
       del_first = a_end;
 
-#if HAVE_cc0
       /* If this was a conditional jump, we need to also delete
 	 the insn that set cc0.  */
-      if (only_sets_cc0_p (prev))
+      if (HAVE_cc0 && only_sets_cc0_p (prev))
 	{
 	  rtx_insn *tmp = prev;
 
@@ -905,7 +904,6 @@  rtl_merge_blocks (basic_block a, basic_block b)
 	    prev = BB_HEAD (a);
 	  del_first = tmp;
 	}
-#endif
 
       a_end = PREV_INSN (del_first);
     }
@@ -1064,11 +1062,9 @@  try_redirect_by_replacing_jump (edge e, basic_block target, bool in_cfglayout)
   /* In case we zap a conditional jump, we'll need to kill
      the cc0 setter too.  */
   kill_from = insn;
-#if HAVE_cc0
-  if (reg_mentioned_p (cc0_rtx, PATTERN (insn))
+  if (HAVE_cc0 && reg_mentioned_p (cc0_rtx, PATTERN (insn))
       && only_sets_cc0_p (PREV_INSN (insn)))
     kill_from = PREV_INSN (insn);
-#endif
 
   /* See if we can create the fallthru edge.  */
   if (in_cfglayout || can_fallthru (src, target))
@@ -1825,12 +1821,10 @@  rtl_tidy_fallthru_edge (edge e)
 	  delete_insn (table);
 	}
 
-#if HAVE_cc0
       /* If this was a conditional jump, we need to also delete
 	 the insn that set cc0.  */
-      if (any_condjump_p (q) && only_sets_cc0_p (PREV_INSN (q)))
+      if (HAVE_cc0 && any_condjump_p (q) && only_sets_cc0_p (PREV_INSN (q)))
 	q = PREV_INSN (q);
-#endif
 
       q = PREV_INSN (q);
     }
diff --git a/gcc/combine.c b/gcc/combine.c
index 430084e..d71f863 100644
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -1141,10 +1141,8 @@  insn_a_feeds_b (rtx_insn *a, rtx_insn *b)
   FOR_EACH_LOG_LINK (links, b)
     if (links->insn == a)
       return true;
-#if HAVE_cc0
-  if (sets_cc0_p (a))
+  if (HAVE_cc0 && sets_cc0_p (a))
     return true;
-#endif
   return false;
 }
 
@@ -4816,7 +4814,6 @@  find_split_point (rtx *loc, rtx_insn *insn, bool set_src)
       break;
 
     case SET:
-#if HAVE_cc0
       /* If SET_DEST is CC0 and SET_SRC is not an operand, a COMPARE, or a
 	 ZERO_EXTRACT, the most likely reason why this doesn't match is that
 	 we need to put the operand into a register.  So split at that
@@ -4829,7 +4826,6 @@  find_split_point (rtx *loc, rtx_insn *insn, bool set_src)
 	  && ! (GET_CODE (SET_SRC (x)) == SUBREG
 		&& OBJECT_P (SUBREG_REG (SET_SRC (x)))))
 	return &SET_SRC (x);
-#endif
 
       /* See if we can split SET_SRC as it stands.  */
       split = find_split_point (&SET_SRC (x), insn, true);
@@ -6582,13 +6578,12 @@  simplify_set (rtx x)
       else
 	compare_mode = SELECT_CC_MODE (new_code, op0, op1);
 
-#if !HAVE_cc0
       /* If the mode changed, we have to change SET_DEST, the mode in the
 	 compare, and the mode in the place SET_DEST is used.  If SET_DEST is
 	 a hard register, just build new versions with the proper mode.  If it
 	 is a pseudo, we lose unless it is only time we set the pseudo, in
 	 which case we can safely change its mode.  */
-      if (compare_mode != GET_MODE (dest))
+      if (!HAVE_cc0 && compare_mode != GET_MODE (dest))
 	{
 	  if (can_change_dest_mode (dest, 0, compare_mode))
 	    {
@@ -6610,7 +6605,6 @@  simplify_set (rtx x)
 	      dest = new_dest;
 	    }
 	}
-#endif  /* cc0 */
 #endif  /* SELECT_CC_MODE */
 
       /* If the code changed, we have to build a new comparison in
diff --git a/gcc/cprop.c b/gcc/cprop.c
index b1caabb..0103686 100644
--- a/gcc/cprop.c
+++ b/gcc/cprop.c
@@ -965,11 +965,9 @@  cprop_jump (basic_block bb, rtx_insn *setcc, rtx_insn *jump, rtx from, rtx src)
 	remove_note (jump, note);
      }
 
-#if HAVE_cc0
   /* Delete the cc0 setter.  */
-  if (setcc != NULL && CC0_P (SET_DEST (single_set (setcc))))
+  if (HAVE_cc0 && setcc != NULL && CC0_P (SET_DEST (single_set (setcc))))
     delete_insn (setcc);
-#endif
 
   global_const_prop_count++;
   if (dump_file != NULL)
diff --git a/gcc/cse.c b/gcc/cse.c
index 52f5a16..ee407ad 100644
--- a/gcc/cse.c
+++ b/gcc/cse.c
@@ -6515,8 +6515,7 @@  cse_extended_basic_block (struct cse_basic_block_data *ebb_data)
 		  && check_for_label_ref (insn))
 		recorded_label_ref = true;
 
-#if HAVE_cc0
-	      if (NONDEBUG_INSN_P (insn))
+	      if (HAVE_cc0 && NONDEBUG_INSN_P (insn))
 		{
 		  /* If the previous insn sets CC0 and this insn no
 		     longer references CC0, delete the previous insn.
@@ -6543,7 +6542,6 @@  cse_extended_basic_block (struct cse_basic_block_data *ebb_data)
 		      prev_insn_cc0_mode = this_insn_cc0_mode;
 		    }
 		}
-#endif
 	    }
 	}
 
diff --git a/gcc/df-problems.c b/gcc/df-problems.c
index d213455..22fcfa6 100644
--- a/gcc/df-problems.c
+++ b/gcc/df-problems.c
@@ -3820,9 +3820,7 @@  can_move_insns_across (rtx_insn *from, rtx_insn *to,
 	  if (bitmap_intersect_p (merge_set, test_use)
 	      || bitmap_intersect_p (merge_use, test_set))
 	    break;
-#if HAVE_cc0
-	  if (!sets_cc0_p (insn))
-#endif
+	  if (!HAVE_cc0 || !sets_cc0_p (insn))
 	    max_to = insn;
 	}
       next = NEXT_INSN (insn);
diff --git a/gcc/function.c b/gcc/function.c
index 70d20ef..dd146aa 100644
--- a/gcc/function.c
+++ b/gcc/function.c
@@ -5634,10 +5634,9 @@  emit_use_return_register_into_block (basic_block bb)
   seq = get_insns ();
   end_sequence ();
   insn = BB_END (bb);
-#if HAVE_cc0
-  if (reg_mentioned_p (cc0_rtx, PATTERN (insn)))
+  if (HAVE_cc0 && reg_mentioned_p (cc0_rtx, PATTERN (insn)))
     insn = prev_cc0_setter (insn);
-#endif
+
   emit_insn_before (seq, insn);
 }
 
diff --git a/gcc/haifa-sched.c b/gcc/haifa-sched.c
index 286bd1b..64c89e8 100644
--- a/gcc/haifa-sched.c
+++ b/gcc/haifa-sched.c
@@ -7184,9 +7184,8 @@  void
 sched_init (void)
 {
   /* Disable speculative loads in their presence if cc0 defined.  */
-#if HAVE_cc0
+  if (HAVE_cc0)
   flag_schedule_speculative_load = 0;
-#endif
 
   if (targetm.sched.dispatch (NULL, IS_DISPATCH_ON))
     targetm.sched.dispatch_do (NULL, DISPATCH_INIT);
diff --git a/gcc/ira.c b/gcc/ira.c
index 819d702..0750d11 100644
--- a/gcc/ira.c
+++ b/gcc/ira.c
@@ -4641,15 +4641,14 @@  find_moveable_pseudos (void)
 			   ? " (no unique first use)" : "");
 		continue;
 	      }
-#if HAVE_cc0
-	    if (reg_referenced_p (cc0_rtx, PATTERN (closest_use)))
+	    if (HAVE_cc0 && reg_referenced_p (cc0_rtx, PATTERN (closest_use)))
 	      {
 		if (dump_file)
 		  fprintf (dump_file, "Reg %d: closest user uses cc0\n",
 			   regno);
 		continue;
 	      }
-#endif
+
 	    bitmap_set_bit (&interesting, regno);
 	    /* If we get here, we know closest_use is a non-NULL insn
 	       (as opposed to const_0_rtx).  */
diff --git a/gcc/loop-invariant.c b/gcc/loop-invariant.c
index ef956a4..7a433bc 100644
--- a/gcc/loop-invariant.c
+++ b/gcc/loop-invariant.c
@@ -922,11 +922,9 @@  find_invariant_insn (rtx_insn *insn, bool always_reached, bool always_executed)
   bool simple = true;
   struct invariant *inv;
 
-#if HAVE_cc0
   /* We can't move a CC0 setter without the user.  */
-  if (sets_cc0_p (insn))
+  if (HAVE_cc0 && sets_cc0_p (insn))
     return;
-#endif
 
   set = single_set (insn);
   if (!set)
diff --git a/gcc/lra-constraints.c b/gcc/lra-constraints.c
index 39cb036..fcd0621 100644
--- a/gcc/lra-constraints.c
+++ b/gcc/lra-constraints.c
@@ -3354,12 +3354,10 @@  curr_insn_transform (bool check_only_p)
   if (JUMP_P (curr_insn) || CALL_P (curr_insn))
     no_output_reloads_p = true;
 
-#if HAVE_cc0
-  if (reg_referenced_p (cc0_rtx, PATTERN (curr_insn)))
+  if (HAVE_cc0 && reg_referenced_p (cc0_rtx, PATTERN (curr_insn)))
     no_input_reloads_p = true;
-  if (reg_set_p (cc0_rtx, PATTERN (curr_insn)))
+  if (HAVE_cc0 && reg_set_p (cc0_rtx, PATTERN (curr_insn)))
     no_output_reloads_p = true;
-#endif
 
   n_operands = curr_static_id->n_operands;
   n_alternatives = curr_static_id->n_alternatives;
diff --git a/gcc/postreload.c b/gcc/postreload.c
index 68443ab..948fcbd 100644
--- a/gcc/postreload.c
+++ b/gcc/postreload.c
@@ -1032,11 +1032,9 @@  reload_combine_recognize_const_pattern (rtx_insn *insn)
 	      && reg_state[clobbered_regno].real_store_ruid >= use_ruid)
 	    break;
 
-#if HAVE_cc0
 	  /* Do not separate cc0 setter and cc0 user on HAVE_cc0 targets.  */
-	  if (must_move_add && sets_cc0_p (PATTERN (use_insn)))
+	  if (HAVE_cc0 && must_move_add && sets_cc0_p (PATTERN (use_insn)))
 	    break;
-#endif
 
 	  gcc_assert (reg_state[regno].store_ruid <= use_ruid);
 	  /* Avoid moving a use of ADDREG past a point where it is stored.  */
diff --git a/gcc/reload.c b/gcc/reload.c
index 8b253b8..bb5dae7 100644
--- a/gcc/reload.c
+++ b/gcc/reload.c
@@ -2706,12 +2706,10 @@  find_reloads (rtx_insn *insn, int replace, int ind_levels, int live_known,
   if (JUMP_P (insn) || CALL_P (insn))
     no_output_reloads = 1;
 
-#if HAVE_cc0
-  if (reg_referenced_p (cc0_rtx, PATTERN (insn)))
+  if (HAVE_cc0 && reg_referenced_p (cc0_rtx, PATTERN (insn)))
     no_input_reloads = 1;
-  if (reg_set_p (cc0_rtx, PATTERN (insn)))
+  if (HAVE_cc0 && reg_set_p (cc0_rtx, PATTERN (insn)))
     no_output_reloads = 1;
-#endif
 
 #ifdef SECONDARY_MEMORY_NEEDED
   /* The eliminated forms of any secondary memory locations are per-insn, so
@@ -4579,16 +4577,14 @@  find_reloads (rtx_insn *insn, int replace, int ind_levels, int live_known,
 	    rld[j].in = 0;
 	  }
 
-#if HAVE_cc0
   /* If we made any reloads for addresses, see if they violate a
      "no input reloads" requirement for this insn.  But loads that we
      do after the insn (such as for output addresses) are fine.  */
-  if (no_input_reloads)
+  if (HAVE_cc0 && no_input_reloads)
     for (i = 0; i < n_reloads; i++)
       gcc_assert (rld[i].in == 0
 		  || rld[i].when_needed == RELOAD_FOR_OUTADDR_ADDRESS
 		  || rld[i].when_needed == RELOAD_FOR_OUTPUT_ADDRESS);
-#endif
 
   /* Compute reload_mode and reload_nregs.  */
   for (i = 0; i < n_reloads; i++)
diff --git a/gcc/reorg.c b/gcc/reorg.c
index f059504..fedefcc 100644
--- a/gcc/reorg.c
+++ b/gcc/reorg.c
@@ -182,7 +182,6 @@  skip_consecutive_labels (rtx label_or_return)
   return label;
 }
 
-#if HAVE_cc0
 /* INSN uses CC0 and is being moved into a delay slot.  Set up REG_CC_SETTER
    and REG_CC_USER notes so we can find it.  */
 
@@ -197,7 +196,6 @@  link_cc0_insns (rtx insn)
   add_reg_note (user, REG_CC_SETTER, insn);
   add_reg_note (insn, REG_CC_USER, user);
 }
-#endif
 
 /* Insns which have delay slots that have not yet been filled.  */
 
@@ -699,8 +697,7 @@  delete_scheduled_jump (rtx_insn *insn)
      be other insns that became dead anyway, which we wouldn't know to
      delete.  */
 
-#if HAVE_cc0
-  if (reg_mentioned_p (cc0_rtx, insn))
+  if (HAVE_cc0 && reg_mentioned_p (cc0_rtx, insn))
     {
       rtx note = find_reg_note (insn, REG_CC_SETTER, NULL_RTX);
 
@@ -730,7 +727,6 @@  delete_scheduled_jump (rtx_insn *insn)
 	    delete_from_delay_slot (trial);
 	}
     }
-#endif
 
   delete_related_insns (insn);
 }
@@ -1171,11 +1167,9 @@  steal_delay_list_from_target (rtx_insn *insn, rtx condition, rtx_sequence *seq,
       if (insn_references_resource_p (trial, sets, false)
 	  || insn_sets_resource_p (trial, needed, false)
 	  || insn_sets_resource_p (trial, sets, false)
-#if HAVE_cc0
 	  /* If TRIAL sets CC0, we can't copy it, so we can't steal this
 	     delay list.  */
-	  || find_reg_note (trial, REG_CC_USER, NULL_RTX)
-#endif
+	  || (HAVE_cc0 && find_reg_note (trial, REG_CC_USER, NULL_RTX))
 	  /* If TRIAL is from the fallthrough code of an annulled branch insn
 	     in SEQ, we cannot use it.  */
 	  || (INSN_ANNULLED_BRANCH_P (seq->insn (0))
@@ -1279,10 +1273,7 @@  steal_delay_list_from_fallthrough (rtx_insn *insn, rtx condition,
       if (insn_references_resource_p (trial, sets, false)
 	  || insn_sets_resource_p (trial, needed, false)
 	  || insn_sets_resource_p (trial, sets, false)
-#if HAVE_cc0
-	  || sets_cc0_p (PATTERN (trial))
-#endif
-	  )
+	  || (HAVE_cc0 && sets_cc0_p (PATTERN (trial))))
 
 	break;
 
@@ -1613,9 +1604,7 @@  redundant_insn (rtx insn, rtx_insn *target, rtx delay_list)
     target_main = XVECEXP (PATTERN (target), 0, 0);
 
   if (resource_conflicts_p (&needed, &set)
-#if HAVE_cc0
-      || reg_mentioned_p (cc0_rtx, ipat)
-#endif
+      || (HAVE_cc0 && reg_mentioned_p (cc0_rtx, ipat))
       /* The insn requiring the delay may not set anything needed or set by
 	 INSN.  */
       || insn_sets_resource_p (target_main, &needed, true)
@@ -2254,10 +2243,9 @@  fill_simple_delay_slots (int non_jumps_p)
 		{
 		  next_trial = next_nonnote_insn (trial);
 		  delay_list = add_to_delay_list (trial, delay_list);
-#if HAVE_cc0
-		  if (reg_mentioned_p (cc0_rtx, pat))
+		  if (HAVE_cc0 && reg_mentioned_p (cc0_rtx, pat))
 		    link_cc0_insns (trial);
-#endif
+
 		  delete_related_insns (trial);
 		  if (slots_to_fill == ++slots_filled)
 		    break;
@@ -2589,10 +2577,8 @@  fill_slots_from_thread (rtx_insn *insn, rtx condition, rtx thread_or_return,
 		  must_annul = 1;
 		winner:
 
-#if HAVE_cc0
-		  if (reg_mentioned_p (cc0_rtx, pat))
+		  if (HAVE_cc0 && reg_mentioned_p (cc0_rtx, pat))
 		    link_cc0_insns (trial);
-#endif
 
 		  /* If we own this thread, delete the insn.  If this is the
 		     destination of a branch, show that a basic block status
@@ -3145,8 +3131,7 @@  delete_computation (rtx insn)
 {
   rtx note, next;
 
-#if HAVE_cc0
-  if (reg_referenced_p (cc0_rtx, PATTERN (insn)))
+  if (HAVE_cc0 && reg_referenced_p (cc0_rtx, PATTERN (insn)))
     {
       rtx prev = prev_nonnote_insn (insn);
       /* We assume that at this stage
@@ -3166,7 +3151,6 @@  delete_computation (rtx insn)
 	    add_reg_note (prev, REG_UNUSED, cc0_rtx);
 	}
     }
-#endif
 
   for (note = REG_NOTES (insn); note; note = next)
     {
diff --git a/gcc/sched-rgn.c b/gcc/sched-rgn.c
index 33261fc..7efd4ad 100644
--- a/gcc/sched-rgn.c
+++ b/gcc/sched-rgn.c
@@ -2487,9 +2487,7 @@  add_branch_dependences (rtx_insn *head, rtx_insn *tail)
 	     && (GET_CODE (PATTERN (insn)) == USE
 		 || GET_CODE (PATTERN (insn)) == CLOBBER
 		 || can_throw_internal (insn)
-#if HAVE_cc0
-		 || sets_cc0_p (PATTERN (insn))
-#endif
+		 || (HAVE_cc0 && sets_cc0_p (PATTERN (insn)))
 		 || (!reload_completed
 		     && sets_likely_spilled (PATTERN (insn)))))
 	 || NOTE_P (insn)