http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60363
--- Comment #3 from bin.cheng <amker.cheng at gmail dot com> --- After patching 208165, there are two more jump threading opportunities for dom1 pass. Jump threading is doing alright, the interesting thing is why there is no such opportunities before patching. I attatched related dump files with/without patch. It seems dumps before vrp1 pass are pretty similar, while after vrp1, dump with patch shows the two additional jump threading opportunities. In other words, they are somehow already fixed (not introduced) in pass vrp1 without patching. For now I can just change ssa-dom-thread-4.c to handle the two jump threadings, or should I look into vrp to find the difference in the first place?
