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

From-SVN: r120849

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d87295d..4045c4b 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+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.

diff --git a/gcc/ipa-type-escape.c b/gcc/ipa-type-escape.c
index 7b2fac1..ccb6010 100644 (file)
--- a/gcc/ipa-type-escape.c
+++ b/gcc/ipa-type-escape.c
@@ -920,26 +920,21 @@ 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)
-       {
-         t = TREE_OPERAND (t, 0);
-         if (TREE_CODE (t) == VIEW_CONVERT_EXPR)
-           {
-             /* This may be some part of a component ref.
-                IE it may be a.b.VIEW_CONVERT_EXPR<weird_type>(c).d, AFAIK.
-                castfromref will give you a.b.c, not a. */
-             tree castfromref = TREE_OPERAND (t, 0);
-             check_cast (TREE_TYPE (t), castfromref);
-           }
-         else if (TREE_CODE (t) == COMPONENT_REF)
-           get_canon_type (TREE_TYPE (TREE_OPERAND (t, 1)), false, false);
-       }
-    } 
+  else
+    while (handled_component_p (t))
+      {
+       t = TREE_OPERAND (t, 0);
+       if (TREE_CODE (t) == VIEW_CONVERT_EXPR)
+         {
+           /* This may be some part of a component ref.
+              IE it may be a.b.VIEW_CONVERT_EXPR<weird_type>(c).d, AFAIK.
+              castfromref will give you a.b.c, not a. */
+           tree castfromref = TREE_OPERAND (t, 0);
+           check_cast (TREE_TYPE (t), castfromref);
+         }
+       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