http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60438
--- Comment #29 from Richard Henderson <rth at gcc dot gnu.org> --- linj, that hunk is required. It's easy to produce a difference ICE without it. I believe that even this pr's test case with -fno-crossjumping is enough to trigger the different ICE. Jakub, it's way more difficult to merge these notes than one might think. Primarily because CSA hasn't done full CFA analysis. It might be possible to merge two REG_CFA_ADJUST_CFA relatively easily. But I'm not really sure how common that is. Certainly it didn't happen in this test case at all. I think at this point, any such optimization will have to wait for stage1.
