https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110472
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86_64-linux-gnu
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think it is just wrong iv-opt choices.
Works just fine on aarch64-linux-gnu too:
ubuntu@ubuntu:~/src/upstream-gcc-aarch64\# ~/upstream-gcc/bin/gcc t4.c -O2
-fopenmp
ubuntu@ubuntu:~/src/upstream-gcc-aarch64\# ./a.out ;echo
time: 15.191220
ubuntu@ubuntu:~/src/upstream-gcc-aarch64\# ~/upstream-gcc/bin/gcc t4.c -O2
-fopenmp -fwrapv
ubuntu@ubuntu:~/src/upstream-gcc-aarch64\# ./a.out ;echo
time: 18.854280
ubuntu@ubuntu:~/src/upstream-gcc-aarch64\# ./a.out ;echo
time: 16.705876
ubuntu@ubuntu:~/src/upstream-gcc-aarch64\# ~/upstream-gcc/bin/gcc t4.c -O2
-fopenmp
ubuntu@ubuntu:~/src/upstream-gcc-aarch64\# ./a.out ;echo
time: 17.491387
ubuntu@ubuntu:~/src/upstream-gcc-aarch64\# ./a.out ;echo
time: 17.519264
