[Bug rtl-optimization/20211] autoincrement generation is poor

[steven at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20211

Bug 20211 depends on bug 19078, which changed state.

Bug 19078 Summary: Poor quality code after loop unrolling.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19078

           What    |Removed                     |Added
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             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |DUPLICATE