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* tree-ssa-loop-ivopts.c (rewrite_use_nonlinear_expr): Use bsi_after_labels. Always insert statements before bsi. * tree-vect-transform.c (vect_create_epilog_for_reduction): Ditto. * predict.c (apply_return_prediction): Check for empty blocks. * cfgexpand.c (lab_rtx_for_bb): New variable. (label_rtx_for_bb): Do not create new tree labels. (expand_gimple_basic_block): Add labels recorded in lab_rtx_for_bb. (tree_expand_cfg): Initialize lab_rtx_for_bb. * tree-cfg.c (build_tree_cfg): Call cleanup_dead_labels after creating edges. (label_for_bb): Add field used. (update_eh_label, main_block_label): Mark the label used. (cleanup_dead_labels): Remove unused labels. From-SVN: r124322
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