https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117467
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2024-11-07
Priority|P3 |P1
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
So confirmed the 25GB memory use is ext-dce, with -fno-ext-dce memory use is
donw to 3GB. The time report then shows VRP as offender:
tree VRP : 76.20 ( 23%) 125M ( 4%)
dominator optimization : 28.30 ( 8%) 84M ( 3%)
given 25GB memory use is going to trash most machines this is P1.
The testcase is quite small but has lots of calls with lots of arguments
that might or might not invoke fortran array copying, it's probably
difficult to reduce sensibly (it has lots of module USEs). Jeff and Andrew
should have access to SPEC, so I won't spend time trying at this point.
