diff options
Diffstat (limited to 'gcc/tree-vectorizer.cc')
| -rw-r--r-- | gcc/tree-vectorizer.cc | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/gcc/tree-vectorizer.cc b/gcc/tree-vectorizer.cc index 0bec280..92ecd88 100644 --- a/gcc/tree-vectorizer.cc +++ b/gcc/tree-vectorizer.cc @@ -540,6 +540,29 @@ vec_info::add_pattern_stmt (gimple *stmt, stmt_vec_info stmt_info) return res; } +/* If STMT was previously associated with a stmt_vec_info and STMT now resides + at a different address than before (e.g., because STMT is a phi node that has + been resized), update the stored address to match the new one. It is not + possible to use lookup_stmt () to perform this task, because that function + returns NULL if the stored stmt pointer does not match the one being looked + up. */ + +stmt_vec_info +vec_info::resync_stmt_addr (gimple *stmt) +{ + unsigned int uid = gimple_uid (stmt); + if (uid > 0 && uid - 1 < stmt_vec_infos.length ()) + { + stmt_vec_info res = stmt_vec_infos[uid - 1]; + if (res && res->stmt) + { + res->stmt = stmt; + return res; + } + } + return nullptr; +} + /* If STMT has an associated stmt_vec_info, return that vec_info, otherwise return null. It is safe to call this function on any statement, even if it might not be part of the vectorizable region. */ |