https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77353
--- Comment #8 from Berni <bseifert at gmx dot at> --- With GCC 5.4.0 comparison is done between two 8-bit registers r24 and r25, as expected. With GCC 6.2.0 additionally registers r19 and r25 are loaded with 0 and 16-bit comparison between register pairs (r18, r19) and (r24, r25) is performed!
