diff options
Diffstat (limited to 'gcc/tree-cfg.c')
| -rw-r--r-- | gcc/tree-cfg.c | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/gcc/tree-cfg.c b/gcc/tree-cfg.c index 621ea576fa7..dce8e4152d1 100644 --- a/gcc/tree-cfg.c +++ b/gcc/tree-cfg.c @@ -2837,10 +2837,12 @@ bsi_replace (const block_stmt_iterator *bsi, tree stmt, bool preserve_eh_info) In all cases, the returned *BSI points to the correct location. The return value is true if insertion should be done after the location, - or false if it should be done before the location. */ + or false if it should be done before the location. If new basic block + has to be created, it is stored in *NEW_BB. */ static bool -tree_find_edge_insert_loc (edge e, block_stmt_iterator *bsi) +tree_find_edge_insert_loc (edge e, block_stmt_iterator *bsi, + basic_block *new_bb) { basic_block dest, src; tree tmp; @@ -2917,6 +2919,8 @@ tree_find_edge_insert_loc (edge e, block_stmt_iterator *bsi) /* Otherwise, create a new basic block, and split this edge. */ dest = split_edge (e); + if (new_bb) + *new_bb = dest; e = dest->pred; goto restart; } @@ -2960,7 +2964,7 @@ bsi_commit_edge_inserts_1 (edge e) PENDING_STMT (e) = NULL_TREE; - if (tree_find_edge_insert_loc (e, &bsi)) + if (tree_find_edge_insert_loc (e, &bsi, NULL)) bsi_insert_after (&bsi, stmt, BSI_NEW_STMT); else bsi_insert_before (&bsi, stmt, BSI_NEW_STMT); @@ -2977,6 +2981,25 @@ bsi_insert_on_edge (edge e, tree stmt) append_to_statement_list (stmt, &PENDING_STMT (e)); } +/* Similar to bsi_insert_on_edge+bsi_commit_edge_inserts. If new block has to + be created, it is returned. */ + +basic_block +bsi_insert_on_edge_immediate (edge e, tree stmt) +{ + block_stmt_iterator bsi; + basic_block new_bb = NULL; + + if (PENDING_STMT (e)) + abort (); + + if (tree_find_edge_insert_loc (e, &bsi, &new_bb)) + bsi_insert_after (&bsi, stmt, BSI_NEW_STMT); + else + bsi_insert_before (&bsi, stmt, BSI_NEW_STMT); + + return new_bb; +} /*--------------------------------------------------------------------------- Tree specific functions for CFG manipulation |