[Bug target/50446] [avr] Implement rotate patterns with offset 1

[gjl at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50446

--- Comment #1 from Georg-Johann Lay <gjl at gcc dot gnu.org> 2011-09-18 
12:36:59 UTC ---
Created attachment 25310
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25310
rotate.c

Some test cases