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2008-11-02 Richard Guenther <rguenther@suse.de> PR tree-optimization/37542 * tree-ssa-pre.c (fully_constant_expression): Handle more cases. * tree-ssa-sccvn.c (vn_get_expr_for): Fix typo. (vn_nary_op_lookup_stmt): Adjust for unary reference trees. (vn_nary_op_insert_stmt): Likewise. (visit_use): Likewise. * gcc.dg/tree-ssa/ssa-pre-22.c: New testcase. * gcc.c-torture/compile/20081101-1.c: Likewise. From-SVN: r141534
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