------- Comment #20 from rakdver at gcc dot gnu dot org 2005-12-06 15:43
-------
This patch should fix the problem:
Index: tree-scalar-evolution.c
===================================================================
*** tree-scalar-evolution.c (revision 108078)
--- tree-scalar-evolution.c (working copy)
*************** follow_ssa_edge_in_rhs (struct loop *loo
*** 1042,1047 ****
--- 1042,1048 ----
t_bool res = t_false;
tree rhs0, rhs1;
tree type_rhs = TREE_TYPE (rhs);
+ tree evol;
/* The RHS is one of the following cases:
- an SSA_NAME,
*************** follow_ssa_edge_in_rhs (struct loop *loo
*** 1084,1097 ****
{
/* Match an assignment under the form:
"a = b + c". */
res = follow_ssa_edge
(loop, SSA_NAME_DEF_STMT (rhs0), halting_phi,
! evolution_of_loop, limit);
if (res == t_true)
*evolution_of_loop = add_to_evolution
(loop->num,
! chrec_convert (type_rhs, *evolution_of_loop, at_stmt),
PLUS_EXPR, rhs1);
else if (res == t_false)
--- 1085,1099 ----
{
/* Match an assignment under the form:
"a = b + c". */
+ evol = *evolution_of_loop;
res = follow_ssa_edge
(loop, SSA_NAME_DEF_STMT (rhs0), halting_phi,
! &evol, limit);
if (res == t_true)
*evolution_of_loop = add_to_evolution
(loop->num,
! chrec_convert (type_rhs, evol, at_stmt),
PLUS_EXPR, rhs1);
else if (res == t_false)
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25248
