[Bug tree-optimization/90018] [8 Regression] r265453 miscompiled 527.cam4_r in SPEC CPU 2017

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90018

--- Comment #13 from Martin Liška <marxin at gcc dot gnu.org> ---
Can be reproduced also on e.g. a Haswell machine:
-Ofast -march=haswell -g -funroll-loops