re PR tree-optimization/57149 (wrong -Wmaybe-uninitialized warning with -Os)
PR tree-optimization/57149 * tree-ssa-uninit.c (uninit_undefined_value_p): New inline. (can_skip_redundant_opnd, compute_uninit_opnds_pos, collect_phi_def_edges, execute_late_warn_uninitialized): Use uninit_undefined_value_p instead of ssa_undefined_value_p. * gcc.dg/pr57149.c: New test. From-SVN: r198671
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gcc/testsuite/gcc.dg/pr57149.c
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