diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 110a6dc58c16..6b9744772a2e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2008-03-06  Richard Guenther  <rguenther@suse.de>
+
+	* alias.c (struct alias_set_entry): Move has_zero_child field
+	to pack with alias_set.
+
 2008-03-05  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* config/i386/i386-modes.def: Use 4 byte alignment on DI for
diff --git a/gcc/alias.c b/gcc/alias.c
index 56afa86321ee..2e4f5aebdb47 100644
--- a/gcc/alias.c
+++ b/gcc/alias.c
@@ -133,6 +133,10 @@ struct alias_set_entry GTY(())
   /* The alias set number, as stored in MEM_ALIAS_SET.  */
   alias_set_type alias_set;
 
+  /* Nonzero if would have a child of zero: this effectively makes this
+     alias set the same as alias set zero.  */
+  int has_zero_child;
+
   /* The children of the alias set.  These are not just the immediate
      children, but, in fact, all descendants.  So, if we have:
 
@@ -141,10 +145,6 @@ struct alias_set_entry GTY(())
      continuing our example above, the children here will be all of
      `int', `double', `float', and `struct S'.  */
   splay_tree GTY((param1_is (int), param2_is (int))) children;
-
-  /* Nonzero if would have a child of zero: this effectively makes this
-     alias set the same as alias set zero.  */
-  int has_zero_child;
 };
 typedef struct alias_set_entry *alias_set_entry;