Experimenting with tree inliner parameter settings

[Steven Bosscher]

Op ma 05-05-2003, om 09:26 schreef Richard Guenther:
> On Sun, 4 May 2003, John David Anglin wrote:
> 
> > > So the question is: What do these numbers do for your code,
> > > both in terms of compile time and in runtime performance?
> > > Richard, Dave, Gerald, can you please test the settings
> > > below on your favorite code and on the test case for
> > > PR 10160 and PR 8361 (and maybe PR 10316)?
> > >
> > > max-inline-insns-single=230
> > > max-inline-insns-auto=230
> > > max-inline-insns=500
> > > min-inline-insns=80
> > > max-inline-slope=20
> >
> > Here is some testing on the PA under hpux.
> 
> Here is the above on my favorite testcase (PR already closed):
> 
> g++-3.3 (GCC) 3.3 20030428 (prerelease), -fno-exceptions -O2
> 
> default params:
> 
> Execution times (seconds)
>  garbage collection    :   0.32 ( 3%) usr   0.00 ( 0%) sys   0.00 ( 0%)
>  parser                :   2.33 (20%) usr   0.37 (32%) sys   3.50 (27%)
>  name lookup           :   1.14 (10%) usr   0.33 (28%) sys   1.00 ( 8%)
>  expand                :   0.92 ( 8%) usr   0.12 (10%) sys   1.50 (12%)
>  CSE                   :   1.41 (12%) usr   0.00 ( 0%) sys   1.00 ( 8%)
>  global CSE            :   0.38 ( 3%) usr   0.03 ( 3%) sys   0.50 ( 4%)
>  loop analysis         :   0.27 ( 2%) usr   0.00 ( 0%) sys   0.00 ( 0%)
>  CSE 2                 :   0.56 ( 5%) usr   0.00 ( 0%) sys   0.50 ( 4%)
>  local alloc           :   0.21 ( 2%) usr   0.00 ( 0%) sys   0.00 ( 0%)
>  global alloc          :   0.38 ( 3%) usr   0.01 ( 1%) sys   0.00 ( 0%)
>  scheduling 2          :   0.33 ( 3%) usr   0.01 ( 1%) sys   0.00 ( 0%)
>  rest of compilation   :   0.20 ( 2%) usr   0.00 ( 0%) sys   0.00 ( 0%)
>  TOTAL                 :  11.80             1.16            13.00
> 
> with params from above:
> 
> Execution times (seconds)
>  garbage collection    :   0.31 ( 4%) usr   0.00 ( 0%) sys   0.00 ( 0%)
>  parser                :   2.63 (30%) usr   0.33 (43%) sys   1.50 (16%)
>  name lookup           :   1.05 (12%) usr   0.20 (26%) sys   1.00 (11%)
>  expand                :   0.44 ( 5%) usr   0.01 ( 1%) sys   2.50 (26%)
>  CSE                   :   0.74 ( 8%) usr   0.00 ( 0%) sys   0.00 ( 0%)
>  global CSE            :   0.21 ( 2%) usr   0.01 ( 1%) sys   0.50 ( 5%)
>  loop analysis         :   0.09 ( 1%) usr   0.00 ( 0%) sys   0.00 ( 0%)
>  CSE 2                 :   0.29 ( 3%) usr   0.00 ( 0%) sys   1.00 (11%)
>  local alloc           :   0.10 ( 1%) usr   0.00 ( 0%) sys   0.00 ( 0%)
>  global alloc          :   0.25 ( 3%) usr   0.00 ( 0%) sys   0.50 ( 5%)
>  scheduling 2          :   0.18 ( 2%) usr   0.02 ( 3%) sys   0.00 ( 0%)
>  rest of compilation   :   0.12 ( 1%) usr   0.00 ( 0%) sys   0.00 ( 0%)
>  TOTAL                 :   8.79             0.76             9.50
> 
> Performance for those params is bad, as expected, but it was the
> same before.

How bad in terms of your "performance indicator", and compared to
earlier GCC's?

Greetz
Steven