[Bug tree-optimization/26969] [4.1/4.2 Regression] ICE with -O1 -funswitch-loops -ftree-vectorize

[rguenth at gcc dot gnu dot org]

------- Comment #3 from rguenth at gcc dot gnu dot org  2006-04-27 11:05 -------
slpeel_update_phis_for_duplicate_loop does not do its job properly.  It fails
to
update the PHI nodes of at least the new loops latch block:

(gdb) call debug_bb (new_loop->latch)
;; basic block 14, loop depth 1, count 0
;; prev block 13, next block 4
;; pred:       13 [98.8%]  (dfs_back,true,exec)
;; succ:       13 [100.0%]  (fallthru,exec)
# SMT.6_40 = PHI <(13)>;
# j_41 = PHI <(13)>;
<L23>:;
goto <bb 13> (<L24>);


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26969