[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

[meissner at gcc dot gnu.org]

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

--- Comment #1 from Michael Meissner <meissner at gcc dot gnu.org> 2011-08-16 
20:57:01 UTC ---
Created attachment 25026
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25026
Example test case