------- Comment #2 from dominiq at lps dot ens dot fr 2009-08-18 20:03 -------
The manual says:
-O3
Optimize yet more. -O3 turns on all optimizations specified by -O2 and also
turns on the -finline-functions, -funswitch-loops, -fpredictive-commoning,
-fgcse-after-reload and -ftree-vectorize options.
but I see:
[karma] f90/bug% gfc -m64 -O2 -ftree-vectorize -finline-functions
-funswitch-loops -fpredictive-commoning -fgcse-after-reload where_2.f90
[karma] f90/bug% a.out
100 100 100 210 210 210
310 310 337 337
[karma] f90/bug% gfc -m64 -O3 where_2.f90
[karma] f90/bug% a.out
100 100 100 210 210 210
310 310 310 310
Abort
What are the missing differences between -O2 and -O3?
--
dominiq at lps dot ens dot fr changed:
What |Removed |Added
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CC| |rguenther at suse dot de
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41082
