[Bug middle-end/52996] [4.8 Regression] ice in verify_loop_structure, at cfgloop.c:1567

[mpolacek at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52996



--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> 2012-12-20 
13:37:47 UTC ---

The issue here is that when unswitching, we create this new bb:

;; basic block 19, loop depth 0, count 0, freq 14, maybe hot

;;  prev block 20, next block 1, flags: (NEW, RTL, MODIFIED)

;;  pred:       18 [2.2%] 

;;  succ:       8 [100.0%]  (FALLTHRU)



its loop depth should be 1, not 0.