diff options
Diffstat (limited to 'gcc/tree-into-ssa.c')
| -rw-r--r-- | gcc/tree-into-ssa.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/gcc/tree-into-ssa.c b/gcc/tree-into-ssa.c index 073a488..a3c3179 100644 --- a/gcc/tree-into-ssa.c +++ b/gcc/tree-into-ssa.c @@ -312,22 +312,21 @@ get_ssa_name_ann (tree name) unsigned len = VEC_length (ssa_name_info_p, info_for_ssa_name); struct ssa_name_info *info; + /* Re-allocate the vector at most once per update/into-SSA. */ if (ver >= len) - { - unsigned old_len = VEC_length (ssa_name_info_p, info_for_ssa_name); - unsigned new_len = num_ssa_names; + VEC_safe_grow_cleared (ssa_name_info_p, heap, + info_for_ssa_name, num_ssa_names); - VEC_reserve (ssa_name_info_p, heap, info_for_ssa_name, - new_len - old_len); - while (len++ < new_len) - { - struct ssa_name_info *info = XCNEW (struct ssa_name_info); - info->age = current_info_for_ssa_name_age; - VEC_quick_push (ssa_name_info_p, info_for_ssa_name, info); - } + /* But allocate infos lazily. */ + info = VEC_index (ssa_name_info_p, info_for_ssa_name, ver); + if (!info) + { + info = XCNEW (struct ssa_name_info); + info->age = current_info_for_ssa_name_age; + info->info.need_phi_state = NEED_PHI_STATE_UNKNOWN; + VEC_replace (ssa_name_info_p, info_for_ssa_name, ver, info); } - info = VEC_index (ssa_name_info_p, info_for_ssa_name, ver); if (info->age < current_info_for_ssa_name_age) { info->age = current_info_for_ssa_name_age; |