------- Additional Comments From dnovillo at gcc dot gnu dot org 2005-02-14
15:20 -------
(In reply to comment #3)
> I'm not sure how to do anything but run a brand-new alias pass here and
> anywhere
> else we expose new global variables (e.g DOM?).
Perhaps the easiest approach for 4.0 is to notice the variable very early. When
scanning for variables, we scan the DECL_INITIAL expressions for pointer-types,
but in this case we don't because 'const_test' is a non-pointer.
With this patch, the test works because we add 'global_int' even before going
into SSA form. I don't think we should worry too much about introducing the
symbol too early. This case should not be very common.
Thoughts?
Index: tree-dfa.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/tree-dfa.c,v
retrieving revision 2.44
diff -d -u -p -r2.44 tree-dfa.c
--- tree-dfa.c 10 Dec 2004 21:54:41 -0000 2.44
+++ tree-dfa.c 14 Feb 2005 15:19:42 -0000
@@ -901,8 +901,7 @@ add_referenced_var (tree var, struct wal
/* Scan DECL_INITIAL for pointer variables as they may contain
address arithmetic referencing the address of other
variables. */
- if (DECL_INITIAL (var)
- && POINTER_TYPE_P (TREE_TYPE (var)))
+ if (DECL_INITIAL (var))
walk_tree (&DECL_INITIAL (var), find_vars_r, walk_state, 0);
}
}
--
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |dnovillo at gcc dot gnu dot
|dot org |org
Status|NEW |ASSIGNED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19853
