On Thu, Dec 10, 2015 at 02:20:04PM +0100, Bernd Schmidt wrote:
> This turns into a much simpler if statement, doesn't it? Ok with that
> change.
Ok, will do, thanks.
> >+/* PR rtl-optimization/68670 */
> >+/* { dg-do run } */
> >+/* { dg-options "-O2 -ftracer" } */
>
> Curious what effect -ftracer has here?
In one case it was seeing all test_bb/then_bb/else_bb/join_bb,
where one of then_bb/else_bb (don't remember which one) contained
y = ~x and another one y = x, while the other case had no else_bb,
with already test_bb doing y = x and then_bb then doing y = ~y.
Correspondingly different condition, different negate value.
Jakub
