[Bug target/41849] optimization fails when register variables are used for an interrupt

[gjl at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41849

--- Comment #3 from Georg-Johann Lay <gjl at gcc dot gnu.org> 2011-07-25 
15:21:54 UTC ---
Created attachment 24829
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24829
Test case from attachment 24828 as compiled with avr-gcc 4.4.2

For compiler options, see the attachment: -Os -mmcu=atmega8.