[Bug target/85805] Improper code generation for 64 bit comparisons on avr-gcc

[sandor.zsuga at jubatian dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85805

--- Comment #2 from Sandor Zsuga <sandor.zsuga at jubatian dot com> ---
Tested on a different machine:

avr-gcc (GCC) 4.9.2

This is what comes with Debian Jessie. The behavior is present (function
compiles to a single "ret").