* 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
