On Thu, Dec 11, 2014 at 11:05:13AM +0100, Richard Biener wrote:
>
> The following patch fixes the performance regression in PR42108
> by allowing PRE and LIM to see the division (to - from) / step
> in translating do loops executed unconditionally. This makes
> them not care for the fact that ste
On Tue, 9 Dec 2014, Richard Biener wrote:
>
> The following finally fixes PR42108 (well, hopefully...) by using
> range-information on SSA names to allow the integer divisions introduced
> by Fortran array lowering being hoisted out of loops, thus detecting
> them as not trapping.
>
> I chose to
