http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53187
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2012-05-02 Ever Confirmed|0 |1 --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-05-02 09:33:29 UTC --- This happens during combine, where simplify_set on (set (reg:CC_NOOV 24 cc) (compare:CC_NOOV (ior:SI (unlt:SI (reg:CCFPE 24 cc) (const_int 0 [0])) (ne:SI (reg:SI 0 r0 [ x ]) (const_int 0 [0]))) (const_int 0 [0]))) calls SELECT_CC_MODE on the arguments of the compare (ior and const0_rtx).