tree-phinodes.c (remove_phi_node): Clean up by factoring out calls to…

tree-phinodes.c (remove_phi_node): Clean up by factoring out calls to release_ssa_name and release_phi_node.

	* tree-phinodes.c (remove_phi_node): Clean up by factoring out
	calls to release_ssa_name and release_phi_node.

From-SVN: r95835

gcc/ChangeLog

@@ -6,6 +6,9 @@
 	* cfgexpand.c (construct_exit_block): Use EDGE_PRED instead of
 	EDGE_I.
 
+	* tree-phinodes.c (remove_phi_node): Clean up by factoring out
+	calls to release_ssa_name and release_phi_node.
+
 2005-03-03  Roger Sayle  <roger@eyesopen.com>
 	    Andrew Pinski  <pinskia@physics.uc.edu>
 

gcc/tree-phinodes.c

@@ -404,36 +404,27 @@ remove_phi_args (edge e)
 void
 remove_phi_node (tree phi, tree prev, basic_block bb)
 {
-  if (prev)
-    {
-      /* Rewire the list if we are given a PREV pointer.  */
-      PHI_CHAIN (prev) = PHI_CHAIN (phi);
+  tree *loc;
 
-      /* If we are deleting the PHI node, then we should release the
-	 SSA_NAME node so that it can be reused.  */
-      release_ssa_name (PHI_RESULT (phi));
-      release_phi_node (phi);
-    }
-  else if (phi == phi_nodes (bb))
+  if (prev)
     {
-      /* Update the list head if removing the first element.  */
-      bb_ann (bb)->phi_nodes = PHI_CHAIN (phi);
-
-      /* If we are deleting the PHI node, then we should release the
-	 SSA_NAME node so that it can be reused.  */
-      release_ssa_name (PHI_RESULT (phi));
-      release_phi_node (phi);
+      loc = &PHI_CHAIN (prev);
     }
   else
     {
-      /* Traverse the list looking for the node to remove.  */
-      tree prev, t;
-      prev = NULL_TREE;
-      for (t = phi_nodes (bb); t && t != phi; t = PHI_CHAIN (t))
-	prev = t;
-      if (t)
-	remove_phi_node (t, prev, bb);
+      for (loc = &(bb_ann (bb)->phi_nodes);
+	   *loc != phi;
+	   loc = &PHI_CHAIN (*loc))
+	;
     }
+
+  /* Remove PHI from the chain.  */
+  *loc = PHI_CHAIN (phi);
+
+  /* If we are deleting the PHI node, then we should release the
+     SSA_NAME node so that it can be reused.  */
+  release_ssa_name (PHI_RESULT (phi));
+  release_phi_node (phi);
 }