[Bug tree-optimization/14728] [tree-ssa] missed jump threading due to casts

["pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-05-14 17:43 -------
Also fixed by:
Fixed by:
        * tree-ssa-forwprop.c (record_single_argument_cond_exprs): Accept
        new parameters for the statement and variable worklist as well
        as a bitmap of interesting SSA_NAMEs.  Walk over the statement
        worklist recording interesting variables in the variable worklist
        and bitmap.  Handle casts between integral and boolean types.
        (substitute_single_use_vars): Accept new parameters for the statement
        and variable worklist.  When a substitution is made add a new
        entry to the statement worklist.  Handle casts between integral
        and boolean types.
        (tree_ssa_forward_propagate_single_use_vars): Rework to pass
        worklists to children.  Iterate until the statement worklist
        is empty.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14728