[Bug tree-optimization/21000] store should not be done if we don't change its value

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-04-13 19:16 -------
We just don't generate any RTL for "i = i".

The optimization for f in comment #0 happens in combine for 3.4.0, so maybe fold could do it, I don't 
know.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21000