[Bug middle-end/39885] Missed fre optimization

[rguenth at gcc dot gnu dot org]

------- Comment #6 from rguenth at gcc dot gnu dot org  2009-04-24 15:16 -------
One thing is that for Java likely SCCVN isn't very effective for loads/stores
as:

       else if (!gimple_has_lhs (stmt)
               || gimple_has_volatile_ops (stmt)
               || stmt_could_throw_p (stmt))
        changed = defs_to_varying (stmt);

and loads/stores may throw.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39885