https://gcc.gnu.org/bugzilla/show_bug.cgi?id=30049

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 55690
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55690&action=edit
testcase

[apinski@xeond2 upstream-gcc-git]$ ~/upstream-gcc/bin/gcc  t.c -march=opteron
-ffast-math -funroll-loops -ftree-vectorize -msse3 -O3 -g
[apinski@xeond2 upstream-gcc-git]$ time ./a.out
real    0m1.522s
user    0m1.517s
sys     0m0.001s
[apinski@xeond2 upstream-gcc-git]$ ~/upstream-gcc/bin/gcc  t.c -march=opteron
-ffast-math -funroll-loops -ftree-vectorize -msse3 -O3 -g -DNORMAL_ARRAY
[apinski@xeond2 upstream-gcc-git]$ time ./a.out
real    0m0.356s
user    0m0.352s
sys     0m0.002s

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