* tree.c (get_unwidened): Remove code fiddling with COMPONENT_REF.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@133624 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 58724be..f62d553 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2008-03-26  Eric Botcazou  <ebotcazou@adacore.com>
+
+       * tree.c (get_unwidened): Remove code fiddling with COMPONENT_REF.
+
 2008-03-26  Andreas Schwab  <schwab@suse.de>
 
        * doc/invoke.texi: Fix use of @item vs. @itemx.

diff --git a/gcc/tree.c b/gcc/tree.c
index c39bccd..2a6ebb0 100644 (file)
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -5956,11 +5956,6 @@ build_complex_type (tree component_type)
    If FOR_TYPE is nonzero, we return a value which, if converted to
    type FOR_TYPE, would be equivalent to converting OP to type FOR_TYPE.
 
-   If FOR_TYPE is nonzero, unaligned bit-field references may be changed to the
-   narrowest type that can hold the value, even if they don't exactly fit.
-   Otherwise, bit-field references are changed to a narrower type
-   only if they can be fetched directly from memory in that type.
-
    OP must have integer, real or enumeral type.  Pointers are not allowed!
 
    There are some cases where the obvious value we could return
@@ -6035,38 +6030,6 @@ get_unwidened (tree op, tree for_type)
        }
     }
 
-  if (TREE_CODE (op) == COMPONENT_REF
-      /* Since type_for_size always gives an integer type.  */
-      && TREE_CODE (type) != REAL_TYPE
-      && TREE_CODE (type) != FIXED_POINT_TYPE
-      /* Don't crash if field not laid out yet.  */
-      && DECL_SIZE (TREE_OPERAND (op, 1)) != 0
-      && host_integerp (DECL_SIZE (TREE_OPERAND (op, 1)), 1))
-    {
-      unsigned int innerprec
-       = tree_low_cst (DECL_SIZE (TREE_OPERAND (op, 1)), 1);
-      int unsignedp = (DECL_UNSIGNED (TREE_OPERAND (op, 1))
-                      || TYPE_UNSIGNED (TREE_TYPE (TREE_OPERAND (op, 1))));
-      type = lang_hooks.types.type_for_size (innerprec, unsignedp);
-
-      /* We can get this structure field in the narrowest type it fits in.
-        If FOR_TYPE is 0, do this only for a field that matches the
-        narrower type exactly and is aligned for it
-        The resulting extension to its nominal type (a fullword type)
-        must fit the same conditions as for other extensions.  */
-
-      if (type != 0
-         && INT_CST_LT_UNSIGNED (TYPE_SIZE (type), TYPE_SIZE (TREE_TYPE (op)))
-         && (for_type || ! DECL_BIT_FIELD (TREE_OPERAND (op, 1)))
-         && (! uns || final_prec <= innerprec || unsignedp))
-       {
-         win = build3 (COMPONENT_REF, type, TREE_OPERAND (op, 0),
-                       TREE_OPERAND (op, 1), NULL_TREE);
-         TREE_SIDE_EFFECTS (win) = TREE_SIDE_EFFECTS (op);
-         TREE_THIS_VOLATILE (win) = TREE_THIS_VOLATILE (op);
-       }
-    }
-
   return win;
 }
 \f