[PR46761] graphite: fix testing of boundary wrapping

[Sebastian Pop]

On Mon, Dec 13, 2010 at 07:40, Alexander Monakov <amonakov@ispras.ru> wrote:
> Hi,
>
> As indicated by the testcase, sometimes Graphite would generate wrong region
> guards if UB_ONE overflows, but does not become zero (i.e. it is signed).
> The patch changes the corresponding test to use TREE_OVERFLOW flag.
>
> Bootstrapped and regtested on x86_64-linux, OK for trunk?
>
> 2010-12-13  Alexander Monakov  <amonakov@ispras.ru>
>
>        PR middle-end/46761
>        * graphite-clast-to-gimple.c (graphite_create_new_loop_guard): Use
>        TREE_OVERFLOW_P to test overflow.
>
> testsuite:
>        * gcc.dg/graphite/pr46761.c: New.
>

Ok.  Thanks for fixing this,
Sebastian