[Bug middle-end/70245] [6 Regression] Miscompilation of ICU on i386 with atom tuning starting with r227382

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70245

--- Comment #9 from Uroš Bizjak <ubizjak at gmail dot com> ---
Please disable the pattern for gcc-6, and let's fix replace_rtx for gcc-7.