https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63740
--- Comment #7 from Aaro Koskinen <aaro.koskinen at iki dot fi> --- Result from bisection (4.9 git branch): 611da9dd72a4c9d9ece2a8d24612e4aee435414a is the first bad commit commit 611da9dd72a4c9d9ece2a8d24612e4aee435414a Author: jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> Date: Wed Oct 1 14:42:46 2014 +0000 Backported from mainline 2014-09-18 Vladimir Makarov <vmaka...@redhat.com> PR debug/63285 * haifa-sched.c (schedule_block): Advance cycle at the end of BB if advance != 0.