http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55211
--- Comment #14 from davem at gcc dot gnu.org 2012-11-05 22:04:10 UTC --- The bug does not trigger using that var-tracking test file using a properly configures 32-bit compiler, I just checked. This sparc64+--with-cpu=v8 is not a legal configuration, it worked by luck and duct-tape previously.