On Thu, Jul 22, 2010 at 9:29 AM, Maxim Kuvyrkov wrote:
> index 89743c3..047b717 100644
> --- a/gcc/sched-rgn.c
> +++ b/gcc/sched-rgn.c
> @@ -2935,6 +2935,9 @@ schedule_region (int rgn)
> if (sched_is_disabled_for_current_region_p ())
> return;
>
> + gcc_assert (!reload_completed || current_
On 7/22/10 3:34 AM, Steven Bosscher wrote:
On Wed, Jul 21, 2010 at 10:09 PM, Maxim Kuvyrkov wrote:
Cselib can /always/ be used during second scheduling pass
Except with the selective scheduler when it works on regions that are
not extended basic blocks, I suppose?
Right, I was considering s
On Wed, Jul 21, 2010 at 10:09 PM, Maxim Kuvyrkov wrote:
> Cselib can /always/ be used during second scheduling pass
Except with the selective scheduler when it works on regions that are
not extended basic blocks, I suppose?
> and on
> single-block regions during the first scheduling pass (after
On 7/21/10 6:44 PM, Bernd Schmidt wrote:
On 07/21/2010 03:06 PM, Steven Bosscher wrote:
3. GCC now has better alias analysis than it used to, especially with
the alias-exporting stuff that exports the GIMPLE points-to analysis
results, but also just all the other little things that were
contribu
On Wed, Jul 21, 2010 at 5:14 PM, Jakub Jelinek wrote:
>> > If that can't be improved, I think that rather than remove cselib from
>> > the scheduler, the question should be: if it's useful, why don't we use
>> > it for other schedulers rather than only sched-ebb?
>>
>> Well, for one thing: It curr
On Wed, Jul 21, 2010 at 04:57:10PM +0200, Steven Bosscher wrote:
> On Wed, Jul 21, 2010 at 4:44 PM, Bernd Schmidt
> wrote:
> > On 07/21/2010 03:06 PM, Steven Bosscher wrote:
> >> 3. GCC now has better alias analysis than it used to, especially with
> >> the alias-exporting stuff that exports the
On Wed, Jul 21, 2010 at 4:44 PM, Bernd Schmidt wrote:
> On 07/21/2010 03:06 PM, Steven Bosscher wrote:
>> 3. GCC now has better alias analysis than it used to, especially with
>> the alias-exporting stuff that exports the GIMPLE points-to analysis
>> results, but also just all the other little thi
On 07/21/2010 03:06 PM, Steven Bosscher wrote:
> 3. GCC now has better alias analysis than it used to, especially with
> the alias-exporting stuff that exports the GIMPLE points-to analysis
> results, but also just all the other little things that were
> contributed over the last 10 years (little t
On 07/21/2010 03:06 PM, Steven Bosscher wrote:
> It looks like ~9% extra !true_dependence cases are found with cselib,
> with is not insignificant:
>
> situationcalls depends ratio
> with_cselib 186764 70463 0.377284
> asis 186764 76375 0.408939 (i.e. no cselib)
>
> On the o
Hello,
Back in 2001, GCC could disambiguate almost no MEMs on ia64 because
ia64 has no (reg+offs) addressing modes. Bernd added a trick to alias
and to sched-ebb to use cselib, to substitute a reg address with a
reg+offs address recorded by cselib (see
http://gcc.gnu.org/viewcvs?view=revision&revi
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