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| author | Jan Hubicka <jh@suse.cz> | 2006-08-02 11:34:34 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2006-08-02 09:34:34 +0000 |
| commit | 0a4fe58f40b2ec68762d965ec148100e353ee562 (patch) | |
| tree | cda3cd19800c29aae1a5538d400479190839eb9b /gcc/tree-cfg.c | |
| parent | 1ec481b18c4a6008afbfd4fca00655c9fb4d0c0d (diff) | |
| download | gcc-0a4fe58f40b2ec68762d965ec148100e353ee562.zip gcc-0a4fe58f40b2ec68762d965ec148100e353ee562.tar.gz gcc-0a4fe58f40b2ec68762d965ec148100e353ee562.tar.bz2 | |
PR gcov/profile/28480
PR gcov/profile/28480
* tree-cfg.c (change_bb_for_stmt): New function.
(tree_merge_blocks, tree_split_blocks): Use it.
From-SVN: r115873
Diffstat (limited to 'gcc/tree-cfg.c')
| -rw-r--r-- | gcc/tree-cfg.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/gcc/tree-cfg.c b/gcc/tree-cfg.c index ced7807..02bc008 100644 --- a/gcc/tree-cfg.c +++ b/gcc/tree-cfg.c @@ -112,6 +112,7 @@ static inline bool stmt_starts_bb_p (tree, tree); static int tree_verify_flow_info (void); static void tree_make_forwarder_block (edge); static void tree_cfg2vcg (FILE *); +static inline void change_bb_for_stmt (tree t, basic_block bb); /* Flowgraph optimization and cleanup. */ static void tree_merge_blocks (basic_block, basic_block); @@ -1386,7 +1387,7 @@ tree_merge_blocks (basic_block a, basic_block b) } else { - set_bb_for_stmt (bsi_stmt (bsi), a); + change_bb_for_stmt (bsi_stmt (bsi), a); bsi_next (&bsi); } } @@ -2778,6 +2779,20 @@ set_bb_for_stmt (tree t, basic_block bb) } } +/* Faster version of set_bb_for_stmt that assume that statement is being moved + from one basic block to another. + For BB splitting we can run into quadratic case, so performance is quite + important and knowing that the tables are big enought, change_bb_for_stmt + can inline as leaf function. */ +static inline void +change_bb_for_stmt (tree t, basic_block bb) +{ + get_stmt_ann (t)->bb = bb; + if (TREE_CODE (t) == LABEL_EXPR) + VEC_replace (basic_block, label_to_block_map, + LABEL_DECL_UID (LABEL_EXPR_LABEL (t)), bb); +} + /* Finds iterator for STMT. */ extern block_stmt_iterator @@ -4203,7 +4218,7 @@ tree_split_block (basic_block bb, void *stmt) new_bb->stmt_list = tsi_split_statement_list_before (&bsi.tsi); for (tsi_tgt = tsi_start (new_bb->stmt_list); !tsi_end_p (tsi_tgt); tsi_next (&tsi_tgt)) - set_bb_for_stmt (tsi_stmt (tsi_tgt), new_bb); + change_bb_for_stmt (tsi_stmt (tsi_tgt), new_bb); return new_bb; } |