[Bug middle-end/82004] [8 Regression] SPEC CPU2017 628.pop2_s miscompare

[mailboxnotfound at yahoo dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82004

--- Comment #45 from john henning <mailboxnotfound at yahoo dot com> ---
I had promised to do some more testing.  

There were miscompares during the training run (thus causing the build to fail)
using

     -Ofast -flto -fprofile-generate/-fprofile-use 

on aarch64 with GCC 8.2, 9.3, and 10.1 and
on x86_64  with GCC 8.3, 9.3, and 10.1.

The above succeeded with GCC 7.3 on both aarch64 and x86_64.

The attachment 628.pop2.moretests.7aug2020.txt digs into 10.1 a bit deeper
(posted as an attachment to reduce the chances of unwanted line wraps or white
space mangling for the tables)