diff options
| author | Tom de Vries <tom@codesourcery.com> | 2011-09-27 16:10:42 +0000 |
|---|---|---|
| committer | Tom de Vries <tom@codesourcery.com> | 2011-09-27 16:10:42 +0000 |
| commit | 90c0244cc219f0331f57157ed8a41586fe53ddcd (patch) | |
| tree | 9fb115ebc32f781835ba38daf51902c0c2321a0b /gcc/params.def | |
| parent | 92ee2ee9829d34556e3b29fe607f0b78bc89ee28 (diff) | |
2011-09-27 Tom de Vries <tom@codesourcery.com>
PR middle-end/43864
* tree-ssa-tail-merge.c: New file.
(struct same_succ_def): Define.
(same_succ, const_same_succ): New typedef.
(struct bb_cluster_def): Define.
(bb_cluster, const_bb_cluster): New typedef.
(struct aux_bb_info): Define.
(BB_SIZE, BB_SAME_SUCC, BB_CLUSTER, BB_VOP_AT_EXIT): Define.
(gvn_uses_equal): New function.
(same_succ_print, same_succ_print_traverse, update_dep_bb)
(stmt_update_dep_bb, local_def, same_succ_hash)
(inverse_flags, same_succ_equal, same_succ_alloc, same_succ_delete)
(same_succ_reset): New function.
(same_succ_htab, same_succ_edge_flags)
(deleted_bbs, deleted_bb_preds): New var.
(debug_same_succ): New function.
(worklist): New var.
(print_worklist, add_to_worklist, find_same_succ_bb, find_same_succ)
(init_worklist, delete_worklist, delete_basic_block_same_succ)
(same_succ_flush_bbs, purge_bbs, update_worklist): New function.
(print_cluster, debug_cluster, update_rep_bb)
(add_bb_to_cluster, new_cluster, delete_cluster): New function.
(all_clusters): New var.
(alloc_cluster_vectors, reset_cluster_vectors, delete_cluster_vectors)
(merge_clusters, set_cluster): New function.
(gimple_equal_p, gsi_advance_bw_nondebug_nonlocal, find_duplicate)
(same_phi_alternatives_1, same_phi_alternatives, bb_has_non_vop_phi)
(deps_ok_for_redirect_from_bb_to_bb, deps_ok_for_redirect)
(find_clusters_1, find_clusters): New function.
(update_vuses, vop_phi, vop_at_entry, replace_block_by): New function.
(update_bbs): New var.
(apply_clusters): New function.
(update_debug_stmt, update_debug_stmts): New function.
(tail_merge_optimize): New function.
tree-pass.h (tail_merge_optimize): Declare.
* tree-ssa-pre.c (execute_pre): Use tail_merge_optimize.
* Makefile.in (OBJS-common): Add tree-ssa-tail-merge.o.
(tree-ssa-tail-merge.o): New rule.
* opts.c (default_options_table): Set OPT_ftree_tail_merge by default at
OPT_LEVELS_2_PLUS.
* tree-ssa-sccvn.c (vn_valueize): Move to ...
* tree-ssa-sccvn.h (vn_valueize): Here.
* timevar.def (TV_TREE_TAIL_MERGE): New timevar.
* common.opt (ftree-tail-merge): New switch.
* params.def (PARAM_MAX_TAIL_MERGE_COMPARISONS)
(PARAM_MAX_TAIL_MERGE_ITERATIONS): New parameter.
* doc/invoke.texi (Optimization Options, -O2): Add -ftree-tail-merge.
(-ftree-tail-merge, max-tail-merge-comparisons)
(max-tail-merge-iterations): New item.
git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@179275 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/params.def')
| -rw-r--r-- | gcc/params.def | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/params.def b/gcc/params.def index c376c80ebfb..0adf0470a66 100644 --- a/gcc/params.def +++ b/gcc/params.def @@ -921,6 +921,15 @@ DEFPARAM (PARAM_TREE_REASSOC_WIDTH, "reassociated tree. If 0, use the target dependent heuristic.", 0, 0, 0) +DEFPARAM (PARAM_MAX_TAIL_MERGE_COMPARISONS, + "max-tail-merge-comparisons", + "Maximum amount of similar bbs to compare a bb with", + 10, 0, 0) + +DEFPARAM (PARAM_MAX_TAIL_MERGE_ITERATIONS, + "max-tail-merge-iterations", + "Maximum amount of iterations of the pass over a function", + 2, 0, 0) /* Local variables: |