gimple-fold.c (gimple_extract_devirt_binfo_from_cst): Remove.

	* gimple-fold.c (gimple_extract_devirt_binfo_from_cst): Remove.
	* gimple-fold.h (gimple_extract_devirt_binfo_from_cst): Remove.

From-SVN: r207450

gcc/ChangeLog

 2014-02-03  Jan Hubicka  <jh@suse.cz>
 
+	* gimple-fold.c (gimple_extract_devirt_binfo_from_cst): Remove.
+	* gimple-fold.h (gimple_extract_devirt_binfo_from_cst): Remove.
+
+2014-02-03  Jan Hubicka  <jh@suse.cz>
+
 	PR ipa/59831
 	* ipa-cp.c (ipa_get_indirect_edge_target_1): Use ipa-devirt
 	to figure out targets of polymorphic calls with known decl.

gcc/gimple-fold.c

@@ -1071,74 +1071,6 @@ gimple_fold_builtin (gimple stmt)
 }
 
 
-/* Return a binfo to be used for devirtualization of calls based on an object
-   represented by a declaration (i.e. a global or automatically allocated one)
-   or NULL if it cannot be found or is not safe.  CST is expected to be an
-   ADDR_EXPR of such object or the function will return NULL.  Currently it is
-   safe to use such binfo only if it has no base binfo (i.e. no ancestors)
-   EXPECTED_TYPE is type of the class virtual belongs to.  */
-
-tree
-gimple_extract_devirt_binfo_from_cst (tree cst, tree expected_type)
-{
-  HOST_WIDE_INT offset, size, max_size;
-  tree base, type, binfo;
-  bool last_artificial = false;
-
-  if (!flag_devirtualize
-      || TREE_CODE (cst) != ADDR_EXPR
-      || TREE_CODE (TREE_TYPE (TREE_TYPE (cst))) != RECORD_TYPE)
-    return NULL_TREE;
-
-  cst = TREE_OPERAND (cst, 0);
-  base = get_ref_base_and_extent (cst, &offset, &size, &max_size);
-  type = TREE_TYPE (base);
-  if (!DECL_P (base)
-      || max_size == -1
-      || max_size != size
-      || TREE_CODE (type) != RECORD_TYPE)
-    return NULL_TREE;
-
-  /* Find the sub-object the constant actually refers to and mark whether it is
-     an artificial one (as opposed to a user-defined one).  */
-  while (true)
-    {
-      HOST_WIDE_INT pos, size;
-      tree fld;
-
-      if (types_same_for_odr (type, expected_type))
-	break;
-      if (offset < 0)
-	return NULL_TREE;
-
-      for (fld = TYPE_FIELDS (type); fld; fld = DECL_CHAIN (fld))
-	{
-	  if (TREE_CODE (fld) != FIELD_DECL)
-	    continue;
-
-	  pos = int_bit_position (fld);
-	  size = tree_to_uhwi (DECL_SIZE (fld));
-	  if (pos <= offset && (pos + size) > offset)
-	    break;
-	}
-      if (!fld || TREE_CODE (TREE_TYPE (fld)) != RECORD_TYPE)
-	return NULL_TREE;
-
-      last_artificial = DECL_ARTIFICIAL (fld);
-      type = TREE_TYPE (fld);
-      offset -= pos;
-    }
-  /* Artificial sub-objects are ancestors, we do not want to use them for
-     devirtualization, at least not here.  */
-  if (last_artificial)
-    return NULL_TREE;
-  binfo = TYPE_BINFO (type);
-  if (!binfo || BINFO_N_BASE_BINFOS (binfo) > 0)
-    return NULL_TREE;
-  else
-    return binfo;
-}
-
 /* Attempt to fold a call statement referenced by the statement iterator GSI.
    The statement may be replaced by another statement, e.g., if the call
    simplifies to a constant value. Return true if any changes were made.

gcc/gimple-fold.h

@@ -26,7 +26,6 @@ extern tree canonicalize_constructor_val (tree, tree);
 extern tree get_symbol_constant_value (tree);
 extern void gimplify_and_update_call_from_tree (gimple_stmt_iterator *, tree);
 extern tree gimple_fold_builtin (gimple);
-extern tree gimple_extract_devirt_binfo_from_cst (tree, tree);
 extern bool fold_stmt (gimple_stmt_iterator *);
 extern bool fold_stmt_inplace (gimple_stmt_iterator *);
 extern tree maybe_fold_and_comparisons (enum tree_code, tree, tree,