[Bug middle-end/64099] [5/6 Regression] ~15% runtime increase for fatigue.f90.

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64099

Richard Biener  changed:

   What|Removed |Added

   Target Milestone|5.3 |5.4

--- Comment #17 from Richard Biener  ---
GCC 5.3 is being released, adjusting target milestone.

[Bug middle-end/64099] [5/6 Regression] ~15% runtime increase for fatigue.f90.

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64099

Richard Biener rguenth at gcc dot gnu.org changed:

   What|Removed |Added

   Target Milestone|5.2 |5.3

--- Comment #16 from Richard Biener rguenth at gcc dot gnu.org ---
GCC 5.2 is being released, adjusting target milestone to 5.3.

[Bug middle-end/64099] [5/6 Regression] ~15% runtime increase for fatigue.f90.

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64099

Jakub Jelinek jakub at gcc dot gnu.org changed:

   What|Removed |Added

   Target Milestone|5.0 |5.2

--- Comment #15 from Jakub Jelinek jakub at gcc dot gnu.org ---
GCC 5.1 has been released.

[Bug middle-end/64099] [5/6 Regression] ~15% runtime increase for fatigue.f90.

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64099

--- Comment #14 from Dominique d'Humieres dominiq at lps dot ens.fr ---
Created attachment 35320
  -- https://gcc.gnu.org/bugzilla/attachment.cgi?id=35320action=edit
Reduced version with most I/Os removed and generalized_hookes_law inlined
manually.

The subroutine perdida is fully inlined when this test is compiled with -Ofast.

[Bug middle-end/64099] [5/6 Regression] ~15% runtime increase for fatigue.f90.

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64099

--- Comment #12 from Dominique d'Humieres dominiq at lps dot ens.fr ---
The timing increase disappears if the code is compiled with
-fno-tree-dominator-opts.

[Bug middle-end/64099] [5/6 Regression] ~15% runtime increase for fatigue.f90.

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64099

--- Comment #13 from Dominique d'Humieres dominiq at lps dot ens.fr ---
Created attachment 35319
  -- https://gcc.gnu.org/bugzilla/attachment.cgi?id=35319action=edit
Reduced version with most I/Os removed.

Run time can be tuned by changing the value of number_of_sample_points. With
the current value (50) run time is ~6s when the test is compiled with -Ofast
-fwhole-program -fno-tree-dominator-opts and ~7s without
-fno-tree-dominator-opts (2.8Ghz Core i7).