diff options
| author | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-02-04 23:26:36 +0000 |
|---|---|---|
| committer | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-02-04 23:26:36 +0000 |
| commit | 96a3dc392ed25a4ab3354b5925e06c65269b50d1 (patch) | |
| tree | bbf5ad857d73a9614797d6f9dbe1e05f2d043715 /gcc/ipa.c | |
| parent | bfd545187988187e969f0648d42d5568e4bbaac9 (diff) | |
| download | gcc-96a3dc392ed25a4ab3354b5925e06c65269b50d1.tar.gz | |
* ipa.c (function_and_variable_visibility): Decompose DECL_ONE_ONLY
groups when we know they are controlled by LTO.
* varasm.c (default_binds_local_p_1): If object is in other partition,
it will be resolved locally.
* lto-partition.c (get_symbol_class): Only unforced DECL_ONE_ONLY
needs duplicating, not generic COMDAT.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@207489 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/ipa.c')
| -rw-r--r-- | gcc/ipa.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/gcc/ipa.c b/gcc/ipa.c index a7e4d764786..be75cba2dfa 100644 --- a/gcc/ipa.c +++ b/gcc/ipa.c @@ -1002,6 +1002,36 @@ function_and_variable_visibility (bool whole_program) if (DECL_EXTERNAL (decl_node->decl)) DECL_EXTERNAL (node->decl) = 1; } + + /* If whole comdat group is used only within LTO code, we can dissolve it, + we handle the unification ourselves. + We keep COMDAT and weak so visibility out of DSO does not change. + Later we may bring the symbols static if they are not exported. */ + if (DECL_ONE_ONLY (node->decl) + && (node->resolution == LDPR_PREVAILING_DEF_IRONLY + || node->resolution == LDPR_PREVAILING_DEF_IRONLY_EXP)) + { + symtab_node *next = node; + + if (node->same_comdat_group) + for (next = node->same_comdat_group; + next != node; + next = next->same_comdat_group) + if (next->externally_visible + && (next->resolution != LDPR_PREVAILING_DEF_IRONLY + && next->resolution != LDPR_PREVAILING_DEF_IRONLY_EXP)) + break; + if (node == next) + { + if (node->same_comdat_group) + for (next = node->same_comdat_group; + next != node; + next = next->same_comdat_group) + DECL_COMDAT_GROUP (next->decl) = NULL; + DECL_COMDAT_GROUP (node->decl) = NULL; + symtab_dissolve_same_comdat_group_list (node); + } + } } FOR_EACH_DEFINED_FUNCTION (node) { |