[Bug rtl-optimization/39510] [avr] missed optimisation with IO read and register variables

[k dot kosciuszkiewicz+gcc at gmail dot com]

------- Comment #3 from k dot kosciuszkiewicz+gcc at gmail dot com  2009-03-27 
17:47 -------
Created an attachment (id=17545)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=17545&action=view)
Second test case with void functions.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39510