On Thu, Jul 24, 2014 at 3:52 AM, Pengfei Yuan 0xcool...@gmail.com wrote:
There are more.
In toplev.c:
/* One region RA really helps to decrease the code size. */
if (flag_ira_region == IRA_REGION_AUTODETECT)
flag_ira_region
= optimize_size || !optimize ? IRA_REGION_ONE :
No, I didn't.
2014-07-24 16:50 GMT+08:00 Richard Biener richard.guent...@gmail.com:
On Thu, Jul 24, 2014 at 3:52 AM, Pengfei Yuan 0xcool...@gmail.com wrote:
There are more.
In toplev.c:
/* One region RA really helps to decrease the code size. */
if (flag_ira_region ==
On Wed, Jul 23, 2014 at 2:39 AM, Pengfei Yuan 0xcool...@gmail.com wrote:
In the experiment, about 60% (1019/1699) profile data files are empty
(all counters are zero).
Well, but you are globally overriding options even for the parts with
profile. The whole point of profile-feedback is to get
I guess some optimizations are controlled only by optimize_size, not
by the profile.
Other optimizations are controlled by the profile.
So this patch does not have very much effectiveness (only 0.9% size reduction).
2014-07-23 17:26 GMT+08:00 Richard Biener richard.guent...@gmail.com:
On Wed,
On Wed, Jul 23, 2014 at 1:04 PM, Pengfei Yuan 0xcool...@gmail.com wrote:
I guess some optimizations are controlled only by optimize_size, not
by the profile.
I only see tree-inline.c:estimate_move_cost which we should indeed fix,
it could make a significant difference.
One other use in
On Wed, Jul 23, 2014 at 2:39 AM, Pengfei Yuan 0xcool...@gmail.com wrote:
In the experiment, about 60% (1019/1699) profile data files are empty
(all counters are zero).
Well, but you are globally overriding options even for the parts with
profile. The whole point of profile-feedback is to
I guess some optimizations are controlled only by optimize_size, not
by the profile.
Other optimizations are controlled by the profile.
So this patch does not have very much effectiveness (only 0.9% size
reduction).
0.9% size reduction counts as very much in compiler developers perspective
There are more.
In toplev.c:
/* One region RA really helps to decrease the code size. */
if (flag_ira_region == IRA_REGION_AUTODETECT)
flag_ira_region
= optimize_size || !optimize ? IRA_REGION_ONE : IRA_REGION_MIXED;
In config/i386/i386.c:
* Assignment of ix86_cost
* Decision
On Mon, Jul 21, 2014 at 7:13 AM, Pengfei Yuan 0xcool...@gmail.com wrote:
Hi,
This patch tunes optimization options based on profile data:
* Disable PGO options if profile is not available or empty.
* Optimize for size if profile is available but empty.
Err ... these don't seem interesting
In the experiment, about 60% (1019/1699) profile data files are empty
(all counters are zero).
2014-07-22 21:39 GMT+08:00 Richard Biener richard.guent...@gmail.com:
On Mon, Jul 21, 2014 at 7:13 AM, Pengfei Yuan 0xcool...@gmail.com wrote:
Hi,
This patch tunes optimization options based on
Hi,
This patch tunes optimization options based on profile data:
* Disable PGO options if profile is not available or empty.
* Optimize for size if profile is available but empty.
Here is an experiment on Firefox PGO build:
CPU Intel Core i7-4770
RAM 32
Sorry, tabs seems converted to spaces automatically.
Please use the attachment instead.
2014-07-21 13:13 GMT+08:00 Pengfei Yuan 0xcool...@gmail.com:
Hi,
This patch tunes optimization options based on profile data:
* Disable PGO options if profile is not available or empty.
* Optimize for
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