[Bug target/67032] Geode optimizations incorrectly return -NaN

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67032

--- Comment #7 from Uroš Bizjak <ubizjak at gmail dot com> ---
Forgot to say that -mno-mmx disables moves to/from MMX regs in your case.