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* tree-pass.h (pass_del_ssa, pass_mark_used_blocks, pass_free_cfg_annotations, pass_free_datastructures): Remove decls. * gimple-low.c (mark_blocks_with_used_vars, mark_used_blocks, pass_mark_used_blocks): Remove. * tree-optimize.c (pass_free_datastructures, execute_free_cfg_annotations, pass_free_cfg_annotations): Remove. * passes.c (init_optimization_passes): Don't call pass_mark_used_blocks, remove dead code. From-SVN: r146819
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