[Bug middle-end/49801] df_live_verify_transfer_functions fails with to use of CC_REGNUM and checking enabled in rx backend

[nickc at redhat dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49801

--- Comment #5 from Nick Clifton <nickc at redhat dot com> 2011-10-06 14:25:16 UTC ---
Hi Paulo,

  Thanks for the step by step guide.  I can now reproduce the problem.

  It looks to me like a generic problem in the live register analysis code. 
Which is a but beyond my debugging capabilities, so I have uploaded a simple
workaround to avoid the issue.  Please note, this is definitely a workaround,
not a patch, so use it at your discretion.  In the meantime I will continue to
investigate and see if I can get my head around the df-core.c code.

Cheers
  Nick