[Bug tree-optimization/70526] [5 Regression] GCC 6 miscompiles Firefox JIT compiler

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70526

--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
no differences in GIMPLE dumps with -f[no-]strict-aliasing, so this is now a
RTL optimization issue.  -fno-schedule-insns2 fixes it ...