tree-ssa-structalias.c (bitpos_of_field): Use BITS_PER_UNIT, not 8.

2011-02-10  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-structalias.c (bitpos_of_field): Use BITS_PER_UNIT,
	not 8.

From-SVN: r170003

gcc/ChangeLog

 2011-02-10  Richard Guenther  <rguenther@suse.de>
 
+	* tree-ssa-structalias.c (bitpos_of_field): Use BITS_PER_UNIT,
+	not 8.
+
+2011-02-10  Richard Guenther  <rguenther@suse.de>
+
 	PR tree-optimization/47677
 	* tree-vrp.c (vrp_bitmap_equal_p): Fix comparison of empty bitmaps.
 

gcc/tree-ssa-structalias.c

@@ -2941,12 +2941,11 @@ process_constraint (constraint_t t)
 static HOST_WIDE_INT
 bitpos_of_field (const tree fdecl)
 {
-
   if (!host_integerp (DECL_FIELD_OFFSET (fdecl), 0)
       || !host_integerp (DECL_FIELD_BIT_OFFSET (fdecl), 0))
     return -1;
 
-  return (TREE_INT_CST_LOW (DECL_FIELD_OFFSET (fdecl)) * 8
+  return (TREE_INT_CST_LOW (DECL_FIELD_OFFSET (fdecl)) * BITS_PER_UNIT
 	  + TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (fdecl)));
 }