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* final.c (compute_alignments): New function. (init_insn_lengths): Do not care label_align. (LABEL_ALIGN_AFTER_BARRIER): Default to 1. (LABEL_ALIGN_AFTER_BARRIER_MAX_SKIP): Default to 0. (JUMP_ALIGN, JUMP_ALIGN_MAX_SKIP): New. (shorted_branches): Realloc label_align array; do not call init_insn_lengths; Do not care about loop alignments. * output.h (compute_alignments): Declare. * toplev.c (rest_of_compilation): Call compute_alignments. * tm.texi (JUMP_ALIGN, JUMP_ALIGN_MAX_SKIP): Document. * predict.c (block_info_def): Add npredecesors, remove nvisited; change visited to tovisit. (propagate_freq): Use faster traversing algorithm. (estimate_loops_at_level, estimate_bb_frequencies): Change visited to tovisit; reverse meaning. * predict.c (struct block_info_def): Remove nvisited. (propagate_freq): Use EDGE_DFS_BACK to detect irreducible regions. (estimate_bb_frequencies): Call mark_dfs_back_edges. From-SVN: r45042
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