[Bug rtl-optimization/18942] [4.0 Regression] Do loop is not as optimizationed as 3.3.2

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
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                 CC|                            |rakdver at gcc dot gnu dot
                   |                            |org
   Target Milestone|---                         |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18942