On Tue, Oct 13, 2015 at 11:06:48AM -0600, Jeff Law wrote:
> On 10/13/2015 07:12 AM, Dominik Vogt wrote:
> >In some cases, the work of the cse1 pass is counterproductive, as
> >we noticed on s390x. The effect described below is present since
> >at least 4.8.0. Note that this may not become manifes
On 10/22/2015 09:08 AM, Vladimir Makarov wrote:
On 10/22/2015 06:05 AM, Dominik Vogt wrote:
On Tue, Oct 13, 2015 at 05:03:36PM -0400, Vladimir Makarov wrote:
[snip]
I checked my article
ftp://ftp.uvsq.fr/pub/gcc/summit/2004/Fighting%20Register%20Pressure.pdf
and GVN gave mostly 0.2% on eon on
On 10/22/2015 06:05 AM, Dominik Vogt wrote:
On Tue, Oct 13, 2015 at 05:03:36PM -0400, Vladimir Makarov wrote:
[snip]
I checked my article
ftp://ftp.uvsq.fr/pub/gcc/summit/2004/Fighting%20Register%20Pressure.pdf
and GVN gave mostly 0.2% on eon only. The current environment is
quite different (
On Tue, Oct 13, 2015 at 05:03:36PM -0400, Vladimir Makarov wrote:
[snip]
> I checked my article
>
> ftp://ftp.uvsq.fr/pub/gcc/summit/2004/Fighting%20Register%20Pressure.pdf
>
> and GVN gave mostly 0.2% on eon only. The current environment is
> quite different (IRA, LRA) so the results might be d
On 10/13/2015 03:03 PM, Vladimir Makarov wrote:
I checked my article
ftp://ftp.uvsq.fr/pub/gcc/summit/2004/Fighting%20Register%20Pressure.pdf
and GVN gave mostly 0.2% on eon only. The current environment is quite
different (IRA, LRA) so the results might be different too.
Yea, but if anyth
On 10/13/2015 01:06 PM, Jeff Law wrote:
On 10/13/2015 07:12 AM, Dominik Vogt wrote:
In some cases, the work of the cse1 pass is counterproductive, as
we noticed on s390x. The effect described below is present since
at least 4.8.0. Note that this may not become manifest in a
performance issue p
On 10/13/2015 07:12 AM, Dominik Vogt wrote:
In some cases, the work of the cse1 pass is counterproductive, as
we noticed on s390x. The effect described below is present since
at least 4.8.0. Note that this may not become manifest in a
performance issue problem on all platforms. Also note that
In some cases, the work of the cse1 pass is counterproductive, as
we noticed on s390x. The effect described below is present since
at least 4.8.0. Note that this may not become manifest in a
performance issue problem on all platforms. Also note that -O1
does not show this behaviour because the r
