[Bug tree-optimization/84419] [8 Regression] SPEC CPU2017/CPU2006 521/621, 527/627, 554/654, 445, 454, 481, 416 runfails after r256628 with march=skylake-avx512

[alexander.nesterovskiy at intel dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84419

--- Comment #5 from Alexander Nesterovskiy <alexander.nesterovskiy at intel dot com> ---
Yes, looks like the problem is with unaligned access (there is no fail in
reproducer when starting a loop with i=0).
It seems that your patch works - there are no runfails for reproducer, 445,
521, 527, 554 (tested on SPEC train workload).
I'll report upon finishing other benchmarks.