bt-load.c (migrate_btr_defs): Remove unneeded NULL check.

	* bt-load.c (migrate_btr_defs): Remove unneeded NULL check.
	* df.c (df_free): Likewise.
	* ra-build.c (ra_build_free, ra_build_free_all): Likewise.
	* tree-ssa-loop-ivopts.c (set_use_iv_cost): Likewise.

From-SVN: r91280

gcc/ChangeLog

 2004-11-25  Nathan Sidwell  <nathan@codesourcery.com>
 
+	* bt-load.c (migrate_btr_defs): Remove unneeded NULL check.
+	* df.c (df_free): Likewise.
+	* ra-build.c (ra_build_free, ra_build_free_all): Likewise.
+	* tree-ssa-loop-ivopts.c (set_use_iv_cost): Likewise.
+
 	* basic-block.h (OBSTACK_ALLOC_REG_SET): Rename to ...
 	(ALLOC_REG_SET): ... here.
 	(FREE_REG_SET): Adjust.

gcc/bt-load.c

@@ -1385,11 +1385,8 @@ migrate_btr_defs (enum reg_class btr_class, int allow_callee_save)
 	    }
 	}
       else
-	{
-	  if (def->live_range)
 	BITMAP_XFREE (def->live_range);
     }
-    }
 
   free (btrs_live);
   free (btrs_live_at_end);

gcc/df.c

@@ -580,11 +580,9 @@ df_free (struct df *df)
   df->regs = 0;
   df->reg_size = 0;
 
-  if (df->bbs_modified)
   BITMAP_XFREE (df->bbs_modified);
   df->bbs_modified = 0;
 
-  if (df->insns_modified)
   BITMAP_XFREE (df->insns_modified);
   df->insns_modified = 0;
 

gcc/ra-build.c

@@ -3125,10 +3125,7 @@ ra_build_free (void)
     {
       struct tagged_conflict *cl;
       for (cl = web_parts[i].sub_conflicts; cl; cl = cl->next)
-	{
-	  if (cl->conflicts)
 	BITMAP_XFREE (cl->conflicts);
-	}
       web_parts[i].sub_conflicts = NULL;
     }
 
@@ -3154,10 +3151,7 @@ ra_build_free_all (struct df *df)
     {
       struct tagged_conflict *cl;
       for (cl = web_parts[i].sub_conflicts; cl; cl = cl->next)
-	{
-	  if (cl->conflicts)
 	BITMAP_XFREE (cl->conflicts);
-	}
       web_parts[i].sub_conflicts = NULL;
     }
   sbitmap_free (live_over_abnormal);

gcc/tree-ssa-loop-ivopts.c

@@ -2047,7 +2047,6 @@ set_use_iv_cost (struct ivopts_data *data,
 
   if (cost == INFTY)
     {
-      if (depends_on)
       BITMAP_XFREE (depends_on);
       return;
     }