[Bug tree-optimization/15255] [tree-ssa] a * 2 + a * 2 is not converted to a * 4

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-06-21 05:13 -------
I will submit my patch tree combine patch tonight which fixes the second case but not the first as the 
first is a problem in fold.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15255