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From: "seurer at linux dot vnet.ibm.com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/91512] [10 Regression] Fortran compile time
 regression.
Date: Tue, 21 Apr 2020 16:00:45 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D91512

Bill Seurer <seurer at linux dot vnet.ibm.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |seurer at linux dot vnet.i=
bm.com

--- Comment #25 from Bill Seurer <seurer at linux dot vnet.ibm.com> ---
This is affecting us on powerpc64 as well.  It takes twice as long to build=
 the
spec2017 test cases with most of the difference in a few of the fortran
compilations which take 30 times or more longer.  I tried the new option bu=
t it
seems to have no effect.

Some quick comparison timings:

compiling module_first_rk_step_part1.fppized.f90 (part of 521.wrf_r)

r10-484: 0m17, 0m14
r10-485: 9m19, 9m17
r10-7837 (current-ish trunk): 9m57, 10m3
r10-7837 with -finline-arg-packing: 9m58, 9m59

Compiling all of spec2017

r10-484: 34m8=20
r10-485: 65m1=20=20
r10-7837: 63m47=20=20
r10-7837 w. option: 65m36=