diff options
| author | Jan Hubicka <jh@suse.cz> | 2005-06-24 17:14:04 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2005-06-24 15:14:04 +0000 |
| commit | ce91e74c187986865c3de8fbd871242183afa93d (patch) | |
| tree | cb74c75feb0a3380d0f1a108528cdc35a05f7892 /gcc/cgraphunit.c | |
| parent | 62765fb14a52c42422b31938deb5893ebe13e735 (diff) | |
| download | gcc-ce91e74c187986865c3de8fbd871242183afa93d.zip gcc-ce91e74c187986865c3de8fbd871242183afa93d.tar.gz gcc-ce91e74c187986865c3de8fbd871242183afa93d.tar.bz2 | |
tree-optimize.c (init_tree_optimization_passes): Fix flags of all_passes and all_ipa_passes.
* tree-optimize.c (init_tree_optimization_passes): Fix flags of
all_passes and all_ipa_passes.
* c-common.c: Include cgraph.h
(handle_externally_visible_attribute): New function.
(c_common_att): Add "externally_visible" attribute.
* cgraph.c (decide_is_variable_needed): Obey externally
visible flag.
(cgraph_varpool_finalize_decl): Avoid redundant checking.
* cgraph.h (struct cgraph_node): New flag externally_visible.
(decide_is_function_needed): Obey externally visible flag.
(cgraph_finalize_function): Avoid redundant checks.
(cgraph_function_and_variable_visibility): Bring symbols local
when asked for.
* common.opt (fwhole-program): New flag.
* doc/invoke.texi (-fwhole-program): Document.
From-SVN: r101295
Diffstat (limited to 'gcc/cgraphunit.c')
| -rw-r--r-- | gcc/cgraphunit.c | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/gcc/cgraphunit.c b/gcc/cgraphunit.c index 2f993f3..f3d718d 100644 --- a/gcc/cgraphunit.c +++ b/gcc/cgraphunit.c @@ -189,9 +189,16 @@ static bool decide_is_function_needed (struct cgraph_node *node, tree decl) { tree origin; + if (MAIN_NAME_P (DECL_NAME (decl)) + && TREE_PUBLIC (decl)) + { + node->local.externally_visible = true; + return true; + } /* If the user told us it is used, then it must be so. */ - if (lookup_attribute ("used", DECL_ATTRIBUTES (decl))) + if (node->local.externally_visible + || lookup_attribute ("used", DECL_ATTRIBUTES (decl))) return true; /* ??? If the assembler name is set by hand, it is possible to assemble @@ -209,7 +216,8 @@ decide_is_function_needed (struct cgraph_node *node, tree decl) /* Externally visible functions must be output. The exception is COMDAT functions that must be output only when they are needed. */ - if (TREE_PUBLIC (decl) && !DECL_COMDAT (decl) && !DECL_EXTERNAL (decl)) + if ((TREE_PUBLIC (decl) && !flag_whole_program) + && !DECL_COMDAT (decl) && !DECL_EXTERNAL (decl)) return true; /* Constructors and destructors are reachable from the runtime by @@ -428,7 +436,7 @@ cgraph_finalize_function (tree decl, bool nested) /* Since we reclaim unreachable nodes at the end of every language level unit, we need to be conservative about possible entry points there. */ - if (TREE_PUBLIC (decl) && !DECL_COMDAT (decl) && !DECL_EXTERNAL (decl)) + if ((TREE_PUBLIC (decl) && !DECL_COMDAT (decl) && !DECL_EXTERNAL (decl))) cgraph_mark_reachable_node (node); /* If not unit at a time, go ahead and emit everything we've found @@ -1059,7 +1067,13 @@ cgraph_function_and_variable_visibility (void) if (node->reachable && (DECL_COMDAT (node->decl) || (TREE_PUBLIC (node->decl) && !DECL_EXTERNAL (node->decl)))) - node->local.externally_visible = 1; + node->local.externally_visible = true; + if (!node->local.externally_visible && node->analyzed + && !DECL_EXTERNAL (node->decl)) + { + gcc_assert (flag_whole_program || !TREE_PUBLIC (node->decl)); + TREE_PUBLIC (node->decl) = 0; + } node->local.local = (!node->needed && node->analyzed && !DECL_EXTERNAL (node->decl) @@ -1070,6 +1084,11 @@ cgraph_function_and_variable_visibility (void) if (vnode->needed && (DECL_COMDAT (vnode->decl) || TREE_PUBLIC (vnode->decl))) vnode->externally_visible = 1; + if (!vnode->externally_visible) + { + gcc_assert (flag_whole_program || !TREE_PUBLIC (vnode->decl)); + TREE_PUBLIC (vnode->decl) = 0; + } gcc_assert (TREE_STATIC (vnode->decl)); } |