------- Comment #5 from rguenth at gcc dot gnu dot org 2007-09-21 13:36 -------
This was fixed by the introduction of pointer-plus, which removed all traces
of fold_used_pointer* in tree-scalar-evolution.c.
A safe patch would go along the following:
Index: tree-vrp.c
===================================================================
--- tree-vrp.c (revision 128649)
+++ tree-vrp.c (working copy)
@@ -2482,6 +2482,13 @@ adjust_range_with_scev (value_range_t *v
if (vr->type == VR_ANTI_RANGE)
return;
+ /* Don't try to feed SCEV with casts to pointer type. */
+ if (TREE_CODE (stmt) == MODIFY_EXPR
+ && (TREE_CODE (TREE_OPERAND (stmt, 1)) == NOP_EXPR
+ || TREE_CODE (TREE_OPERAND (stmt, 1)) == CONVERT_EXPR)
+ && POINTER_TYPE_P (TREE_TYPE (TREE_OPERAND (stmt, 1))))
+ return;
+
chrec = instantiate_parameters (loop, analyze_scalar_evolution (loop, var));
if (TREE_CODE (chrec) != POLYNOMIAL_CHREC)
return;
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |rguenth at gcc dot gnu dot
|dot org |org
Status|NEW |ASSIGNED
Last reconfirmed|2007-09-11 11:31:46 |2007-09-21 13:36:53
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33381
