https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71916
--- Comment #9 from Qirun Zhang <helloqirun at gmail dot com> --- (In reply to Martin Liška from comment #7) > Hm, the second test-case works fine with r233209, but started to fail with > r236831: > > Author: law <law@138bc75d-0d04-0410-961f-82ee72b054a4> > Date: Fri May 27 16:32:38 2016 +0000 > > * tree-ssa-threadedge.c: Remove include of tree-ssa-threadbackward.h. > (thread_across_edge): Remove calls to find_jump_threads_backwards. > * passes.def: Add jump threading passes before DOM/VRP. > * tree-ssa-threadbackward.c (find_jump_threads_backwards): Change > argument to a basic block from an edge. Remove tests which are > handled elsewhere. > (pass_data_thread_jumps, class pass_thread_jumps): New. > (pass_thread_jumps::gate, pass_thread_jumps::execute): New. > (make_pass_thread_jumps): Likewise. > * tree-pass.h (make_pass_thread_jumps): Declare. > > * gcc.dg/tree-ssa/pr21417.c: Update expected output. > * gcc.dg/tree-ssa/pr66752-3.c: Likewise. > * gcc.dg/tree-ssa/pr68198.c: Likewise. > * gcc.dg/tree-ssa/pr69196-1.c: Likewise. > * gcc.dg/tree-ssa/pr69270-3.c: Likewise. > * gcc.dg/tree-ssa/ssa-dom-thread-2b.c: Likewise. > * gcc.dg/tree-ssa/ssa-dom-thread-2g.c: Likewise. > * gcc.dg/tree-ssa/ssa-dom-thread-2h.c: Likewise. > * gcc.dg/tree-ssa/ssa-dom-thread-6.c: Likewise. > * gcc.dg/tree-ssa/ssa-dom-thread-7.c: Likewise. > * gcc.dg/tree-ssa/ssa-dom-thread-12.c: Likewise. > * gcc.dg/tree-ssa/ssa-dom-thread-13.c: Likewise. > * gcc.dg/tree-ssa/vrp56.c: Likewise. Will it be a good idea to separate the two bugs (i.e., to create a new PR for the second case)?
