How to dump scheduling graph?

78. How to dump scheduling graph?
/home/jtony/git-llvm/build/team-llvm/bin/llc /home/jtony/scrum/s11/memcpy/jtony/ppc.ll -view-misched-dags 2>&1 | /home/sfertile/bin/capture_dot
test/CodeGen/PowerPC/reduced.ll

79. How to show hidden llc options?
llc -help-hidden
like:
 -view-misched-dags                                       - Pop up a window to show MISched dags after they are processed
 -view-sched-dags                                         - Pop up a window to show sched dags as they are processed
 -view-sunit-dags                                         - Pop up a window to show SUnit dags after they are processed