[Bug rtl-optimization/50101] GCC 4.5 and 4.6 generate suboptimal code on ppc for countdown loops when the CTR register cannot be used

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50101

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-08-17 
08:10:03 UTC ---
I suppose the CTR is introduced after RA in machine-dependent reorg?  In which
case can the issue be fixed on branches by adjusting register cost of the CTR?