ira-int.h (ira_zero_hard_reg_set, [...]): Delete.

gcc/
	* ira-int.h (ira_zero_hard_reg_set, ira_one_hard_reg_set): Delete.
	* ira-color.c (setup_allocno_left_conflicts_num): Use
	hard_reg_set_equal_p instead of a comparison with
	ira_zero_hard_reg_set.
	* ira.c (setup_reg_subclasses): Likewise.
	(setup_cover_and_important_classes): Likewise.
	(setup_class_translate): Likewise.
	(setup_reg_class_intersect_union): Likewise.
	(ira_zero_hard_reg_set, ira_one_hard_reg_set): Delete.
	(ira_init_once): Don't initialize them.

From-SVN: r140054

4 files changed, 22 insertions, 20 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4606969..f493fed 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,16 @@
+2008-09-06  Richard Sandiford  <rdsandiford@googlemail.com>
+
+	* ira-int.h (ira_zero_hard_reg_set, ira_one_hard_reg_set): Delete.
+	* ira-color.c (setup_allocno_left_conflicts_num): Use
+	hard_reg_set_equal_p instead of a comparison with
+	ira_zero_hard_reg_set.
+	* ira.c (setup_reg_subclasses): Likewise.
+	(setup_cover_and_important_classes): Likewise.
+	(setup_class_translate): Likewise.
+	(setup_reg_class_intersect_union): Likewise.
+	(ira_zero_hard_reg_set, ira_one_hard_reg_set): Delete.
+	(ira_init_once): Don't initialize them.
+
 2008-09-05  Vladimir Makarov  <vmakarov@redhat.com>
 
 	* doc/tm.texi (IRA_COVER_CLASSES): Fix a typo.
diff --git a/gcc/ira-color.c b/gcc/ira-color.c
index 9bda76d..833048e 100644
--- a/gcc/ira-color.c
+++ b/gcc/ira-color.c
@@ -1274,7 +1274,7 @@ setup_allocno_left_conflicts_num (ira_allocno_t allocno)
   AND_HARD_REG_SET (temp_set, reg_class_contents[cover_class]);
   AND_COMPL_HARD_REG_SET (temp_set, ira_no_alloc_regs);
   conflict_allocnos_size = 0;
-  if (! hard_reg_set_equal_p (temp_set, ira_zero_hard_reg_set))
+  if (! hard_reg_set_empty_p (temp_set))
     for (i = 0; i < (int) hard_regs_num; i++)
       {
 	hard_regno = ira_class_hard_regs[cover_class][i];
@@ -1282,7 +1282,7 @@ setup_allocno_left_conflicts_num (ira_allocno_t allocno)
 	  {
 	    conflict_allocnos_size++;
 	    CLEAR_HARD_REG_BIT (temp_set, hard_regno);
-	    if (hard_reg_set_equal_p (temp_set, ira_zero_hard_reg_set))
+	    if (hard_reg_set_empty_p (temp_set))
 	      break;
 	  }
       }
diff --git a/gcc/ira-int.h b/gcc/ira-int.h
index 727eeae..ccd65e6 100644
--- a/gcc/ira-int.h
+++ b/gcc/ira-int.h
@@ -702,10 +702,6 @@ ira_allocno_set_iter_next (ira_allocno_set_iterator *i)
 
 /* ira.c: */
 
-/* Hard regsets whose all bits are correspondingly zero or one.  */
-extern HARD_REG_SET ira_zero_hard_reg_set;
-extern HARD_REG_SET ira_one_hard_reg_set;
-
 /* Map: hard regs X modes -> set of hard registers for storing value
    of given mode starting with given hard register.  */
 extern HARD_REG_SET ira_reg_mode_hard_regset
diff --git a/gcc/ira.c b/gcc/ira.c
index 5170769..dfaf34f 100644
--- a/gcc/ira.c
+++ b/gcc/ira.c
@@ -670,7 +670,7 @@ setup_reg_subclasses (void)
 
       COPY_HARD_REG_SET (temp_hard_regset, reg_class_contents[i]);
       AND_COMPL_HARD_REG_SET (temp_hard_regset, no_unit_alloc_regs);
-      if (hard_reg_set_equal_p (temp_hard_regset, ira_zero_hard_reg_set))
+      if (hard_reg_set_empty_p (temp_hard_regset))
 	continue;
       for (j = 0; j < N_REG_CLASSES; j++)
 	if (i != j)
@@ -734,7 +734,7 @@ setup_cover_and_important_classes (void)
 	  gcc_unreachable ();
       COPY_HARD_REG_SET (temp_hard_regset, reg_class_contents[cl]);
       AND_COMPL_HARD_REG_SET (temp_hard_regset, no_unit_alloc_regs);
-      if (! hard_reg_set_equal_p (temp_hard_regset, ira_zero_hard_reg_set))
+      if (! hard_reg_set_empty_p (temp_hard_regset))
 	ira_reg_class_cover[ira_reg_class_cover_size++] = cl;
     }
   ira_important_classes_num = 0;
@@ -742,7 +742,7 @@ setup_cover_and_important_classes (void)
     {
       COPY_HARD_REG_SET (temp_hard_regset, reg_class_contents[cl]);
       AND_COMPL_HARD_REG_SET (temp_hard_regset, no_unit_alloc_regs);
-      if (! hard_reg_set_equal_p (temp_hard_regset, ira_zero_hard_reg_set))
+      if (! hard_reg_set_empty_p (temp_hard_regset))
 	for (j = 0; j < ira_reg_class_cover_size; j++)
 	  {
 	    COPY_HARD_REG_SET (temp_hard_regset, reg_class_contents[cl]);
@@ -794,8 +794,7 @@ setup_class_translate (void)
 	    {
 	      COPY_HARD_REG_SET (temp_hard_regset, reg_class_contents[cl]);
 	      AND_COMPL_HARD_REG_SET (temp_hard_regset, no_unit_alloc_regs);
-	      if (! hard_reg_set_subset_p (temp_hard_regset,
-					   ira_zero_hard_reg_set))
+	      if (! hard_reg_set_empty_p (temp_hard_regset))
 		gcc_unreachable ();
 	    }
 #endif
@@ -818,7 +817,7 @@ setup_class_translate (void)
 			     reg_class_contents[cover_class]);
 	  AND_HARD_REG_SET (temp_hard_regset, reg_class_contents[cl]);
 	  AND_COMPL_HARD_REG_SET (temp_hard_regset, no_unit_alloc_regs);
-	  if (! hard_reg_set_equal_p (temp_hard_regset, ira_zero_hard_reg_set))
+	  if (! hard_reg_set_empty_p (temp_hard_regset))
 	    {
 	      min_cost = INT_MAX;
 	      for (mode = 0; mode < MAX_MACHINE_MODE; mode++)
@@ -875,8 +874,8 @@ setup_reg_class_intersect_union (void)
 	  AND_COMPL_HARD_REG_SET (temp_hard_regset, no_unit_alloc_regs);
 	  COPY_HARD_REG_SET (temp_set2, reg_class_contents[cl2]);
 	  AND_COMPL_HARD_REG_SET (temp_set2, no_unit_alloc_regs);
-	  if (hard_reg_set_equal_p (temp_hard_regset, ira_zero_hard_reg_set)
-	      && hard_reg_set_equal_p (temp_set2, ira_zero_hard_reg_set))
+	  if (hard_reg_set_empty_p (temp_hard_regset)
+	      && hard_reg_set_empty_p (temp_set2))
 	    {
 	      for (i = 0;; i++)
 		{
@@ -1081,10 +1080,6 @@ ira_init_register_move_cost (enum machine_mode mode)
 
 
 
-/* Hard regsets whose all bits are correspondingly zero or one.  */
-HARD_REG_SET ira_zero_hard_reg_set;
-HARD_REG_SET ira_one_hard_reg_set;
-
 /* This is called once during compiler work.  It sets up
    different arrays whose values don't depend on the compiled
    function.  */
@@ -1093,8 +1088,6 @@ ira_init_once (void)
 {
   enum machine_mode mode;
 
-  CLEAR_HARD_REG_SET (ira_zero_hard_reg_set);
-  SET_HARD_REG_SET (ira_one_hard_reg_set);
   for (mode = 0; mode < MAX_MACHINE_MODE; mode++)
     {
       ira_register_move_cost[mode] = NULL;