[Bug target/41885] New: AVR Rotate patterns do not correctly consider overlap.

["hutchinsonandy at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

Rotate patterns that split byte sized rotates into moves do not correctly
consider overlap of operands.

This was noted on a similar but different shift bug 

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39635

and detailed here

http://lists.gnu.org/archive/html/avr-gcc-list/2009-03/msg00158.html

Bug raised to reference separate testcase and fix.


-- 
           Summary: AVR Rotate patterns do not correctly consider overlap.
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hutchinsonandy at gcc dot gnu dot org
  GCC host triplet: i486-linux-gnu
GCC target triplet: avr-*-*


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41885