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[Bug middle-end/49801] df_live_verify_transfer_functions fails with to use of CC_REGNUM and checking enabled in rx backend
- From: "nickc at redhat dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 06 Oct 2011 14:25:16 +0000
- Subject: [Bug middle-end/49801] df_live_verify_transfer_functions fails with to use of CC_REGNUM and checking enabled in rx backend
- Auto-submitted: auto-generated
- References: <bug-49801-4@http.gcc.gnu.org/bugzilla/>
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