[Bug tree-optimization/21541] [4.1 Regression] gcc.c-torture/execute/20031215-1.c compilation fails

[rguenth at gcc dot gnu dot org]

------- Additional Comments From rguenth at gcc dot gnu dot org  2005-05-16 19:57 -------
2005-05-11  Richard Guenther  <rguenth@gcc.gnu.org>

        PR middle-end/19807
        PR tree-optimization/19639
        * fold-const.c (try_move_mult_to_index): Handle INTEGER_CST
        and generic summands for char* as s * delta, too, folding &a[i]
        CODE x to &a[i CODE x/s].  Use tree_int_cst_equal
        for comparison of steps.  Convert types for index addition.
        (fold_binary): Adjust the callers to always dispatch to
        try_move_mult_to_index.
        * tree-ssa-propagate.c (set_rhs): Avoid setting rhs to
        expr with non-gimple ARRAY_REF offset.


It exposed a latent bug in conjunction with


2005-05-10  Diego Novillo  <dnovillo@redhat.com>

        * tree-optimize.c (init_tree_optimization_passes): Re-organize
        optimization passes to do an initial batch of scalar cleanups.


which I had not in during testing.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21541