remove more ifdefs for HAVE_cc0

gcc/ChangeLog:

2015-04-21  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>

	* caller-save.c (insert_one_insn): Remove ifdef HAVE_cc0.
	* cfgcleanup.c (flow_find_cross_jump): Likewise.
	(flow_find_head_matching_sequence): Likewise.
	(try_head_merge_bb): Likewise.
	* combine.c (can_combine_p): Likewise.
	(try_combine): Likewise.
	(distribute_notes): Likewise.
	* df-problems.c (can_move_insns_across): Likewise.
	* final.c (final): Likewise.
	* gcse.c (insert_insn_end_basic_block): Likewise.
	* ira.c (find_moveable_pseudos): Likewise.
	* reorg.c (try_merge_delay_insns): Likewise.
	(fill_simple_delay_slots): Likewise.
	(fill_slots_from_thread): Likewise.
	* sched-deps.c (sched_analyze_2): Likewise.

From-SVN: r222302

10 files changed, 87 insertions, 110 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 93384b72af2..541a3d39ee4 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,23 @@
 2015-04-21  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>
 
+	* caller-save.c (insert_one_insn): Remove ifdef HAVE_cc0.
+	* cfgcleanup.c (flow_find_cross_jump): Likewise.
+	(flow_find_head_matching_sequence): Likewise.
+	(try_head_merge_bb): Likewise.
+	* combine.c (can_combine_p): Likewise.
+	(try_combine): Likewise.
+	(distribute_notes): Likewise.
+	* df-problems.c (can_move_insns_across): Likewise.
+	* final.c (final): Likewise.
+	* gcse.c (insert_insn_end_basic_block): Likewise.
+	* ira.c (find_moveable_pseudos): Likewise.
+	* reorg.c (try_merge_delay_insns): Likewise.
+	(fill_simple_delay_slots): Likewise.
+	(fill_slots_from_thread): Likewise.
+	* sched-deps.c (sched_analyze_2): Likewise.
+
+2015-04-21  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>
+
 	* df-scan.c (df_get_entry_block_def_set): Remove #ifdef
 	PIC_OFFSET_TABLE_REGNUM.
 
diff --git a/gcc/caller-save.c b/gcc/caller-save.c
index fc575ebb724..76c3a7e5263 100644
--- a/gcc/caller-save.c
+++ b/gcc/caller-save.c
@@ -1400,18 +1400,16 @@ insert_one_insn (struct insn_chain *chain, int before_p, int code, rtx pat)
   rtx_insn *insn = chain->insn;
   struct insn_chain *new_chain;
 
-#if HAVE_cc0
   /* If INSN references CC0, put our insns in front of the insn that sets
      CC0.  This is always safe, since the only way we could be passed an
      insn that references CC0 is for a restore, and doing a restore earlier
      isn't a problem.  We do, however, assume here that CALL_INSNs don't
      reference CC0.  Guard against non-INSN's like CODE_LABEL.  */
 
-  if ((NONJUMP_INSN_P (insn) || JUMP_P (insn))
+  if (HAVE_cc0 && (NONJUMP_INSN_P (insn) || JUMP_P (insn))
       && before_p
       && reg_referenced_p (cc0_rtx, PATTERN (insn)))
     chain = chain->prev, insn = chain->insn;
-#endif
 
   new_chain = new_insn_chain ();
   if (before_p)
diff --git a/gcc/cfgcleanup.c b/gcc/cfgcleanup.c
index 17cf023561b..477b6da2e81 100644
--- a/gcc/cfgcleanup.c
+++ b/gcc/cfgcleanup.c
@@ -1456,12 +1456,11 @@ flow_find_cross_jump (basic_block bb1, basic_block bb2, rtx_insn **f1,
       i2 = PREV_INSN (i2);
     }
 
-#if HAVE_cc0
   /* Don't allow the insn after a compare to be shared by
      cross-jumping unless the compare is also shared.  */
-  if (ninsns && reg_mentioned_p (cc0_rtx, last1) && ! sets_cc0_p (last1))
+  if (HAVE_cc0 && ninsns && reg_mentioned_p (cc0_rtx, last1)
+      && ! sets_cc0_p (last1))
     last1 = afterlast1, last2 = afterlast2, last_dir = afterlast_dir, ninsns--;
-#endif
 
   /* Include preceding notes and labels in the cross-jump.  One,
      this may bring us to the head of the blocks as requested above.
@@ -1579,12 +1578,11 @@ flow_find_head_matching_sequence (basic_block bb1, basic_block bb2, rtx_insn **f
       i2 = NEXT_INSN (i2);
     }
 
-#if HAVE_cc0
   /* Don't allow a compare to be shared by cross-jumping unless the insn
      after the compare is also shared.  */
-  if (ninsns && reg_mentioned_p (cc0_rtx, last1) && sets_cc0_p (last1))
+  if (HAVE_cc0 && ninsns && reg_mentioned_p (cc0_rtx, last1)
+      && sets_cc0_p (last1))
     last1 = beforelast1, last2 = beforelast2, ninsns--;
-#endif
 
   if (ninsns)
     {
@@ -2370,11 +2368,9 @@ try_head_merge_bb (basic_block bb)
   cond = get_condition (jump, &move_before, true, false);
   if (cond == NULL_RTX)
     {
-#if HAVE_cc0
-      if (reg_mentioned_p (cc0_rtx, jump))
+      if (HAVE_cc0 && reg_mentioned_p (cc0_rtx, jump))
 	move_before = prev_nonnote_nondebug_insn (jump);
       else
-#endif
 	move_before = jump;
     }
 
@@ -2539,11 +2535,9 @@ try_head_merge_bb (basic_block bb)
       cond = get_condition (jump, &move_before, true, false);
       if (cond == NULL_RTX)
 	{
-#if HAVE_cc0
-	  if (reg_mentioned_p (cc0_rtx, jump))
+	  if (HAVE_cc0 && reg_mentioned_p (cc0_rtx, jump))
 	    move_before = prev_nonnote_nondebug_insn (jump);
 	  else
-#endif
 	    move_before = jump;
 	}
     }
@@ -2562,12 +2556,10 @@ try_head_merge_bb (basic_block bb)
 	  /* Try again, using a different insertion point.  */
 	  move_before = jump;
 
-#if HAVE_cc0
 	  /* Don't try moving before a cc0 user, as that may invalidate
 	     the cc0.  */
-	  if (reg_mentioned_p (cc0_rtx, jump))
+	  if (HAVE_cc0 && reg_mentioned_p (cc0_rtx, jump))
 	    break;
-#endif
 
 	  continue;
 	}
@@ -2622,12 +2614,10 @@ try_head_merge_bb (basic_block bb)
 	  /* For the unmerged insns, try a different insertion point.  */
 	  move_before = jump;
 
-#if HAVE_cc0
 	  /* Don't try moving before a cc0 user, as that may invalidate
 	     the cc0.  */
-	  if (reg_mentioned_p (cc0_rtx, jump))
+	  if (HAVE_cc0 && reg_mentioned_p (cc0_rtx, jump))
 	    break;
-#endif
 
 	  for (ix = 0; ix < nedges; ix++)
 	    currptr[ix] = headptr[ix] = nextptr[ix];
diff --git a/gcc/combine.c b/gcc/combine.c
index d71f8639343..6f0007af24e 100644
--- a/gcc/combine.c
+++ b/gcc/combine.c
@@ -2066,7 +2066,6 @@ can_combine_p (rtx_insn *insn, rtx_insn *i3, rtx_insn *pred ATTRIBUTE_UNUSED,
       return 0;
 #endif
 
-#if HAVE_cc0
   /* Don't combine an insn that follows a CC0-setting insn.
      An insn that uses CC0 must not be separated from the one that sets it.
      We do, however, allow I2 to follow a CC0-setting insn if that insn
@@ -2076,11 +2075,13 @@ can_combine_p (rtx_insn *insn, rtx_insn *i3, rtx_insn *pred ATTRIBUTE_UNUSED,
      It would be more logical to test whether CC0 occurs inside I1 or I2,
      but that would be much slower, and this ought to be equivalent.  */
 
-  p = prev_nonnote_insn (insn);
-  if (p && p != pred && NONJUMP_INSN_P (p) && sets_cc0_p (PATTERN (p))
-      && ! all_adjacent)
-    return 0;
-#endif
+  if (HAVE_cc0)
+    {
+      p = prev_nonnote_insn (insn);
+      if (p && p != pred && NONJUMP_INSN_P (p) && sets_cc0_p (PATTERN (p))
+	  && ! all_adjacent)
+	return 0;
+    }
 
   /* If we get here, we have passed all the tests and the combination is
      to be allowed.  */
@@ -3114,7 +3115,6 @@ try_combine (rtx_insn *i3, rtx_insn *i2, rtx_insn *i1, rtx_insn *i0,
 
   subst_insn = i3;
 
-#if !HAVE_cc0
   /* Many machines that don't use CC0 have insns that can both perform an
      arithmetic operation and set the condition code.  These operations will
      be represented as a PARALLEL with the first element of the vector
@@ -3126,7 +3126,7 @@ try_combine (rtx_insn *i3, rtx_insn *i2, rtx_insn *i1, rtx_insn *i0,
      needed, and make the PARALLEL by just replacing I2DEST in I3SRC with
      I2SRC.  Later we will make the PARALLEL that contains I2.  */
 
-  if (i1 == 0 && added_sets_2 && GET_CODE (PATTERN (i3)) == SET
+  if (!HAVE_cc0 && i1 == 0 && added_sets_2 && GET_CODE (PATTERN (i3)) == SET
       && GET_CODE (SET_SRC (PATTERN (i3))) == COMPARE
       && CONST_INT_P (XEXP (SET_SRC (PATTERN (i3)), 1))
       && rtx_equal_p (XEXP (SET_SRC (PATTERN (i3)), 0), i2dest))
@@ -3216,7 +3216,6 @@ try_combine (rtx_insn *i3, rtx_insn *i2, rtx_insn *i1, rtx_insn *i0,
 	  i2_is_used = 1;
 	}
     }
-#endif
 
   if (i2_is_used == 0)
     {
@@ -3644,9 +3643,7 @@ try_combine (rtx_insn *i3, rtx_insn *i2, rtx_insn *i1, rtx_insn *i0,
 	 are set between I2 and I3.  */
       if (insn_code_number < 0
           && (split = find_split_point (&newpat, i3, false)) != 0
-#if HAVE_cc0
-	  && REG_P (i2dest)
-#endif
+	  && (!HAVE_cc0 || REG_P (i2dest))
 	  /* We need I2DEST in the proper mode.  If it is a hard register
 	     or the only use of a pseudo, we can change its mode.
 	     Make sure we don't change a hard register to have a mode that
@@ -3916,9 +3913,7 @@ try_combine (rtx_insn *i3, rtx_insn *i2, rtx_insn *i1, rtx_insn *i0,
 	  && !(GET_CODE (SET_DEST (set1)) == SUBREG
 	       && find_reg_note (i2, REG_DEAD,
 				 SUBREG_REG (SET_DEST (set1))))
-#if HAVE_cc0
-	  && !reg_referenced_p (cc0_rtx, set0)
-#endif
+	  && (!HAVE_cc0 || !reg_referenced_p (cc0_rtx, set0))
 	  /* If I3 is a jump, ensure that set0 is a jump so that
 	     we do not create invalid RTL.  */
 	  && (!JUMP_P (i3) || SET_DEST (set0) == pc_rtx)
@@ -3933,9 +3928,7 @@ try_combine (rtx_insn *i3, rtx_insn *i2, rtx_insn *i1, rtx_insn *i0,
 	       && !(GET_CODE (SET_DEST (set0)) == SUBREG
 		    && find_reg_note (i2, REG_DEAD,
 				      SUBREG_REG (SET_DEST (set0))))
-#if HAVE_cc0
-	       && !reg_referenced_p (cc0_rtx, set1)
-#endif
+	       && (!HAVE_cc0 || !reg_referenced_p (cc0_rtx, set1))
 	       /* If I3 is a jump, ensure that set1 is a jump so that
 		  we do not create invalid RTL.  */
 	       && (!JUMP_P (i3) || SET_DEST (set1) == pc_rtx)
@@ -4000,19 +3993,18 @@ try_combine (rtx_insn *i3, rtx_insn *i2, rtx_insn *i1, rtx_insn *i0,
 	}
     }
 
-#if HAVE_cc0
   /* If I2 is the CC0 setter and I3 is the CC0 user then check whether
      they are adjacent to each other or not.  */
-  {
-    rtx_insn *p = prev_nonnote_insn (i3);
-    if (p && p != i2 && NONJUMP_INSN_P (p) && newi2pat
-	&& sets_cc0_p (newi2pat))
-      {
-	undo_all ();
-	return 0;
-      }
-  }
-#endif
+  if (HAVE_cc0)
+    {
+      rtx_insn *p = prev_nonnote_insn (i3);
+      if (p && p != i2 && NONJUMP_INSN_P (p) && newi2pat
+	  && sets_cc0_p (newi2pat))
+	{
+	  undo_all ();
+	  return 0;
+	}
+    }
 
   /* Only allow this combination if insn_rtx_costs reports that the
      replacement instructions are cheaper than the originals.  */
@@ -13796,9 +13788,7 @@ distribute_notes (rtx notes, rtx_insn *from_insn, rtx_insn *i3, rtx_insn *i2,
 		    {
 		      rtx set = single_set (tem_insn);
 		      rtx inner_dest = 0;
-#if HAVE_cc0
 		      rtx_insn *cc0_setter = NULL;
-#endif
 
 		      if (set != 0)
 			for (inner_dest = SET_DEST (set);
@@ -13842,7 +13832,6 @@ distribute_notes (rtx notes, rtx_insn *from_insn, rtx_insn *i3, rtx_insn *i2,
 			  if (tem_insn == i2)
 			    i2 = NULL;
 
-#if HAVE_cc0
 			  /* Delete the setter too.  */
 			  if (cc0_setter)
 			    {
@@ -13859,7 +13848,6 @@ distribute_notes (rtx notes, rtx_insn *from_insn, rtx_insn *i3, rtx_insn *i2,
 			      if (cc0_setter == i2)
 				i2 = NULL;
 			    }
-#endif
 			}
 		      else
 			{
diff --git a/gcc/df-problems.c b/gcc/df-problems.c
index 22fcfa6f6e0..d3d06eedc7c 100644
--- a/gcc/df-problems.c
+++ b/gcc/df-problems.c
@@ -3859,10 +3859,7 @@ can_move_insns_across (rtx_insn *from, rtx_insn *to,
       if (NONDEBUG_INSN_P (insn))
 	{
 	  if (!bitmap_intersect_p (test_set, local_merge_live)
-#if HAVE_cc0
-	      && !sets_cc0_p (insn)
-#endif
-	      )
+	      && (!HAVE_cc0 || !sets_cc0_p (insn)))
 	    {
 	      max_to = insn;
 	      break;
diff --git a/gcc/final.c b/gcc/final.c
index dc7126ef212..231cfe56249 100644
--- a/gcc/final.c
+++ b/gcc/final.c
@@ -2029,21 +2029,20 @@ final (rtx_insn *first, FILE *file, int optimize_p)
 
   last_ignored_compare = 0;
 
-#if HAVE_cc0
-  for (insn = first; insn; insn = NEXT_INSN (insn))
-    {
-      /* If CC tracking across branches is enabled, record the insn which
-	 jumps to each branch only reached from one place.  */
-      if (optimize_p && JUMP_P (insn))
-	{
-	  rtx lab = JUMP_LABEL (insn);
-	  if (lab && LABEL_P (lab) && LABEL_NUSES (lab) == 1)
-	    {
-	      LABEL_REFS (lab) = insn;
-	    }
-	}
-    }
-#endif
+  if (HAVE_cc0)
+    for (insn = first; insn; insn = NEXT_INSN (insn))
+      {
+	/* If CC tracking across branches is enabled, record the insn which
+	   jumps to each branch only reached from one place.  */
+	if (optimize_p && JUMP_P (insn))
+	  {
+	    rtx lab = JUMP_LABEL (insn);
+	    if (lab && LABEL_P (lab) && LABEL_NUSES (lab) == 1)
+	      {
+		LABEL_REFS (lab) = insn;
+	      }
+	  }
+      }
 
   init_recog ();
 
diff --git a/gcc/gcse.c b/gcc/gcse.c
index 151da065a0d..e4303fea10a 100644
--- a/gcc/gcse.c
+++ b/gcc/gcse.c
@@ -2048,21 +2048,23 @@ insert_insn_end_basic_block (struct gcse_expr *expr, basic_block bb)
 	  && (!single_succ_p (bb)
 	      || single_succ_edge (bb)->flags & EDGE_ABNORMAL)))
     {
-#if HAVE_cc0
       /* FIXME: 'twould be nice to call prev_cc0_setter here but it aborts
 	 if cc0 isn't set.  */
-      rtx note = find_reg_note (insn, REG_CC_SETTER, NULL_RTX);
-      if (note)
-	insn = safe_as_a <rtx_insn *> (XEXP (note, 0));
-      else
+      if (HAVE_cc0)
 	{
-	  rtx_insn *maybe_cc0_setter = prev_nonnote_insn (insn);
-	  if (maybe_cc0_setter
-	      && INSN_P (maybe_cc0_setter)
-	      && sets_cc0_p (PATTERN (maybe_cc0_setter)))
-	    insn = maybe_cc0_setter;
+	  rtx note = find_reg_note (insn, REG_CC_SETTER, NULL_RTX);
+	  if (note)
+	    insn = safe_as_a <rtx_insn *> (XEXP (note, 0));
+	  else
+	    {
+	      rtx_insn *maybe_cc0_setter = prev_nonnote_insn (insn);
+	      if (maybe_cc0_setter
+		  && INSN_P (maybe_cc0_setter)
+		  && sets_cc0_p (PATTERN (maybe_cc0_setter)))
+		insn = maybe_cc0_setter;
+	    }
 	}
-#endif
+
       /* FIXME: What if something in cc0/jump uses value set in new insn?  */
       new_insn = emit_insn_before_noloc (pat, insn, bb);
     }
diff --git a/gcc/ira.c b/gcc/ira.c
index 9dcbc62f1d4..25baa90845a 100644
--- a/gcc/ira.c
+++ b/gcc/ira.c
@@ -4724,10 +4724,7 @@ find_moveable_pseudos (void)
 	    {
 	      if (bitmap_bit_p (def_bb_moveable, regno)
 		  && !control_flow_insn_p (use_insn)
-#if HAVE_cc0
-		  && !sets_cc0_p (use_insn)
-#endif
-		  )
+		  && (!HAVE_cc0 || !sets_cc0_p (use_insn)))
 		{
 		  if (modified_between_p (DF_REF_REG (use), def_insn, use_insn))
 		    {
diff --git a/gcc/reorg.c b/gcc/reorg.c
index 16dfa5e1f23..45c7201c99e 100644
--- a/gcc/reorg.c
+++ b/gcc/reorg.c
@@ -1364,10 +1364,8 @@ try_merge_delay_insns (rtx insn, rtx_insn *thread)
 	continue;
 
       if (GET_CODE (next_to_match) == GET_CODE (trial)
-#if HAVE_cc0
 	  /* We can't share an insn that sets cc0.  */
-	  && ! sets_cc0_p (pat)
-#endif
+	  && (!HAVE_cc0 || ! sets_cc0_p (pat))
 	  && ! insn_references_resource_p (trial, &set, true)
 	  && ! insn_sets_resource_p (trial, &set, true)
 	  && ! insn_sets_resource_p (trial, &needed, true)
@@ -1437,9 +1435,7 @@ try_merge_delay_insns (rtx insn, rtx_insn *thread)
 	  if (! insn_references_resource_p (dtrial, &set, true)
 	      && ! insn_sets_resource_p (dtrial, &set, true)
 	      && ! insn_sets_resource_p (dtrial, &needed, true)
-#if HAVE_cc0
-	      && ! sets_cc0_p (PATTERN (dtrial))
-#endif
+	      && (!HAVE_cc0 || ! sets_cc0_p (PATTERN (dtrial)))
 	      && rtx_equal_p (PATTERN (next_to_match), PATTERN (dtrial))
 	      /* Check that DTRIAL and NEXT_TO_MATCH does not reference a 
 	         resource modified between them (only dtrial is checked because
@@ -2114,10 +2110,8 @@ fill_simple_delay_slots (int non_jumps_p)
 					     filter_flags ? &fset : &set,
 					     true)
 		  && ! insn_sets_resource_p (trial, &needed, true)
-#if HAVE_cc0
 		  /* Can't separate set of cc0 from its use.  */
-		  && ! (reg_mentioned_p (cc0_rtx, pat) && ! sets_cc0_p (pat))
-#endif
+		  && (!HAVE_cc0 || ! (reg_mentioned_p (cc0_rtx, pat) && ! sets_cc0_p (pat)))
 		  && ! can_throw_internal (trial))
 		{
 		  trial = try_split (pat, trial, 1);
@@ -2249,9 +2243,7 @@ fill_simple_delay_slots (int non_jumps_p)
 		  && ! insn_references_resource_p (trial, &set, true)
 		  && ! insn_sets_resource_p (trial, &set, true)
 		  && ! insn_sets_resource_p (trial, &needed, true)
-#if HAVE_cc0
-		  && ! (reg_mentioned_p (cc0_rtx, pat) && ! sets_cc0_p (pat))
-#endif
+		  && (!HAVE_cc0 && ! (reg_mentioned_p (cc0_rtx, pat) && ! sets_cc0_p (pat)))
 		  && ! (maybe_never && may_trap_or_fault_p (pat))
 		  && (trial = try_split (pat, trial, 0))
 		  && eligible_for_delay (insn, slots_filled, trial, flags)
@@ -2297,9 +2289,7 @@ fill_simple_delay_slots (int non_jumps_p)
 	      && ! insn_references_resource_p (next_trial, &set, true)
 	      && ! insn_sets_resource_p (next_trial, &set, true)
 	      && ! insn_sets_resource_p (next_trial, &needed, true)
-#if HAVE_cc0
-	      && ! reg_mentioned_p (cc0_rtx, PATTERN (next_trial))
-#endif
+	      && (!HAVE_cc0 || ! reg_mentioned_p (cc0_rtx, PATTERN (next_trial)))
 	      && ! (maybe_never && may_trap_or_fault_p (PATTERN (next_trial)))
 	      && (next_trial = try_split (PATTERN (next_trial), next_trial, 0))
 	      && eligible_for_delay (insn, slots_filled, next_trial, flags)
@@ -2510,10 +2500,8 @@ fill_slots_from_thread (rtx_insn *insn, rtx condition, rtx thread_or_return,
       if (! insn_references_resource_p (trial, &set, true)
 	  && ! insn_sets_resource_p (trial, &set, true)
 	  && ! insn_sets_resource_p (trial, &needed, true)
-#if HAVE_cc0
-	  && ! (reg_mentioned_p (cc0_rtx, pat)
-		&& (! own_thread || ! sets_cc0_p (pat)))
-#endif
+	  && (!HAVE_cc0 || (! (reg_mentioned_p (cc0_rtx, pat)
+			      && (! own_thread || ! sets_cc0_p (pat)))))
 	  && ! can_throw_internal (trial))
 	{
 	  rtx prior_insn;
diff --git a/gcc/sched-deps.c b/gcc/sched-deps.c
index 7d2719fb69d..e62456325e2 100644
--- a/gcc/sched-deps.c
+++ b/gcc/sched-deps.c
@@ -2609,9 +2609,9 @@ sched_analyze_2 (struct deps_desc *deps, rtx x, rtx_insn *insn)
       return;
 
     case CC0:
-#if !HAVE_cc0
-      gcc_unreachable ();
-#endif
+      if (!HAVE_cc0)
+	gcc_unreachable ();
+
       /* User of CC0 depends on immediately preceding insn.  */
       SCHED_GROUP_P (insn) = 1;
        /* Don't move CC0 setter to another block (it can set up the