* ipa-type-escape.c (look_for_casts): Revamp using handled_component_p.

From-SVN: r120849

gcc/ChangeLog

+2007-01-17  Jan Hubicka  <jh@suse.cz>
+
+	* ipa-type-escape.c (look_for_casts): Revamp using handled_component_p.
+
 2007-01-17  Eric Christopher  <echristo@apple.com>
 
 	* config.gcc: Support core2 processor.

gcc/ipa-type-escape.c

@@ -920,12 +920,8 @@ look_for_casts (tree lhs __attribute__((unused)), tree t)
       tree castfromvar = TREE_OPERAND (t, 0);
       check_cast (TREE_TYPE (t), castfromvar);
     }
-  else if (TREE_CODE (t) == COMPONENT_REF
-	   || TREE_CODE (t) == INDIRECT_REF
-	   || TREE_CODE (t) == BIT_FIELD_REF)
-    {
-      tree base = get_base_address (t);
-      while (t != base)
+  else
+    while (handled_component_p (t))
       {
 	t = TREE_OPERAND (t, 0);
 	if (TREE_CODE (t) == VIEW_CONVERT_EXPR)
@@ -939,7 +935,6 @@ look_for_casts (tree lhs __attribute__((unused)), tree t)
 	else if (TREE_CODE (t) == COMPONENT_REF)
 	  get_canon_type (TREE_TYPE (TREE_OPERAND (t, 1)), false, false);
       }
-    } 
 } 
 
 /* Check to see if T is a read or address of operation on a static var