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| author | Jan Hubicka <hubicka@ucw.cz> | 2015-11-29 23:33:23 +0100 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2015-11-29 22:33:23 +0000 |
| commit | f1703a2e2b3fefa60a70e08f30be5fb4a7fd8b4f (patch) | |
| tree | b119bcfa394a1eeb2b5f120d0165f4e631cf136b /gcc/cgraph.h | |
| parent | a4850ce9b58d12158248dc7fbe1015646757c813 (diff) | |
| download | gcc-f1703a2e2b3fefa60a70e08f30be5fb4a7fd8b4f.tar.gz | |
cgraph.c (cgraph_node::make_local): No name is unique during incremental linking.
* cgraph.c (cgraph_node::make_local): No name is unique during
incremental linking.
* cgraph.h (can_be_discarded_p): Update comment; also common and
WEAK in named sections can be discarded; when doing incremental
link do not rely on resolution being the final one.
* varasm.c (default_binds_local_p_3, decl_binds_to_current_def_p):
When symbol can be discarded, do not rely on resolution info.
* symtab.c (symtab_node::nonzero_address): Take into account that
symbol can be discarded.
* ipa-visibility.c (update_visibility_by_resolution_info): Handle
definition correctly.
(function_and_variable_visibility): Do not set unique_name when
incrementally linking.
From-SVN: r231050
Diffstat (limited to 'gcc/cgraph.h')
| -rw-r--r-- | gcc/cgraph.h | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/gcc/cgraph.h b/gcc/cgraph.h index b6390995ab9..6cff4468cc0 100644 --- a/gcc/cgraph.h +++ b/gcc/cgraph.h @@ -319,15 +319,23 @@ public: /* Return true when there are references to the node. */ bool referred_to_p (bool include_self = true); - /* Return true if NODE can be discarded by linker from the binary. */ + /* Return true if symbol can be discarded by linker from the binary. + Assume that symbol is used (so there is no need to take into account + garbage collecting linkers) + + This can happen for comdats, commons and weaks when they are previaled + by other definition at static linking time. */ inline bool can_be_discarded_p (void) { return (DECL_EXTERNAL (decl) - || (get_comdat_group () - && resolution != LDPR_PREVAILING_DEF - && resolution != LDPR_PREVAILING_DEF_IRONLY - && resolution != LDPR_PREVAILING_DEF_IRONLY_EXP)); + || ((get_comdat_group () + || DECL_COMMON (decl) + || (DECL_SECTION_NAME (decl) && DECL_WEAK (decl))) + && ((resolution != LDPR_PREVAILING_DEF + && resolution != LDPR_PREVAILING_DEF_IRONLY_EXP) + || flag_incremental_link) + && resolution != LDPR_PREVAILING_DEF_IRONLY)); } /* Return true if NODE is local to a particular COMDAT group, and must not |