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| author | Jan Hubicka <jh@suse.cz> | 2010-08-21 11:46:15 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2010-08-21 09:46:15 +0000 |
| commit | 508e475706c3560a86b08446e1bb764773b93ed9 (patch) | |
| tree | dd592015baf43a7ac0105edb4a35dc0cecd6d50f /gcc/cgraphunit.c | |
| parent | f1395d4a6e0ea98b1fa3b72d40f02fcba9801500 (diff) | |
| download | gcc-508e475706c3560a86b08446e1bb764773b93ed9.zip gcc-508e475706c3560a86b08446e1bb764773b93ed9.tar.gz gcc-508e475706c3560a86b08446e1bb764773b93ed9.tar.bz2 | |
re PR middle-end/45307 (Stores expanding to no RTL not removed by tree optimizers, Empty ctors/dtors not eliminated)
PR c++/45307
PR c++/17736
* cgraph.h (cgraph_only_called_directly_p,
cgraph_can_remove_if_no_direct_calls_and_refs_p): Handle
static cdtors.
* cgraphunit.c (cgraph_decide_is_function_needed): Static cdtors
are not needed.
(cgraph_finalize_function): Static cdtors are reachable.
(cgraph_mark_functions_to_output): Use cgraph_only_called_directly_p.
* gcc.dg/ipa/ctor-empty-1.c: Add testcase.
* g++.dg/tree-ssa/empty-2.C: Check that constructor got optimized out.
From-SVN: r163439
Diffstat (limited to 'gcc/cgraphunit.c')
| -rw-r--r-- | gcc/cgraphunit.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/gcc/cgraphunit.c b/gcc/cgraphunit.c index 4ef63a2..57b7a8d 100644 --- a/gcc/cgraphunit.c +++ b/gcc/cgraphunit.c @@ -367,11 +367,6 @@ cgraph_decide_is_function_needed (struct cgraph_node *node, tree decl) && !DECL_COMDAT (decl) && !DECL_EXTERNAL (decl)) return true; - /* Constructors and destructors are reachable from the runtime by - some mechanism. */ - if (DECL_STATIC_CONSTRUCTOR (decl) || DECL_STATIC_DESTRUCTOR (decl)) - return true; - return false; } @@ -532,7 +527,9 @@ 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)) + || DECL_STATIC_CONSTRUCTOR (decl) + || DECL_STATIC_DESTRUCTOR (decl)) cgraph_mark_reachable_node (node); /* If we've not yet emitted decl, tell the debug info about it. */ @@ -1219,8 +1216,7 @@ cgraph_mark_functions_to_output (void) outside the current compilation unit. */ if (node->analyzed && !node->global.inlined_to - && (node->needed || node->reachable_from_other_partition - || node->address_taken + && (!cgraph_only_called_directly_p (node) || (e && node->reachable)) && !TREE_ASM_WRITTEN (decl) && !DECL_EXTERNAL (decl)) |