diff options
Diffstat (limited to 'gcc/cgraph.c')
| -rw-r--r-- | gcc/cgraph.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/gcc/cgraph.c b/gcc/cgraph.c index 3e5dab1..9236835 100644 --- a/gcc/cgraph.c +++ b/gcc/cgraph.c @@ -939,7 +939,7 @@ bool decide_is_variable_needed (struct cgraph_varpool_node *node, tree decl) { /* If the user told us it is used, then it must be so. */ - if (node->externally_visible) + if (node->externally_visible || node->force_output) return true; if (!flag_unit_at_a_time && lookup_attribute ("used", DECL_ATTRIBUTES (decl))) @@ -963,6 +963,17 @@ decide_is_variable_needed (struct cgraph_varpool_node *node, tree decl) && !DECL_EXTERNAL (decl)) return true; + /* When emulating tls, we actually see references to the control + variable, rather than the user-level variable. */ + if (!targetm.have_tls + && TREE_CODE (decl) == VAR_DECL + && DECL_THREAD_LOCAL_P (decl)) + { + tree control = emutls_decl (decl); + if (decide_is_variable_needed (cgraph_varpool_node (control), control)) + return true; + } + /* When not reordering top level variables, we have to assume that we are going to keep everything. */ if (flag_unit_at_a_time && flag_toplevel_reorder) |