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| author | Jan Hubicka <hubicka@ucw.cz> | 2014-12-15 23:50:18 +0100 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2014-12-15 22:50:18 +0000 |
| commit | 2e118f3cd2536e40c46e1b449dbcec3a0f2065c0 (patch) | |
| tree | c19ee228e68d4f368a2d2afdfe04d9e838523ffc /gcc | |
| parent | daca16d1f07cdba2a6b8ac96e85cbd9c3b8b30bb (diff) | |
| download | gcc-2e118f3cd2536e40c46e1b449dbcec3a0f2065c0.zip gcc-2e118f3cd2536e40c46e1b449dbcec3a0f2065c0.tar.gz gcc-2e118f3cd2536e40c46e1b449dbcec3a0f2065c0.tar.bz2 | |
decl2.c (decl_needed_p): When not optimizing, do not consider external decls as needed.
* decl2.c (decl_needed_p): When not optimizing, do not consider external
decls as needed.
From-SVN: r218769
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/cp/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/cp/decl2.c | 23 |
2 files changed, 22 insertions, 6 deletions
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog index afb2483..4c6043e 100644 --- a/gcc/cp/ChangeLog +++ b/gcc/cp/ChangeLog @@ -1,3 +1,8 @@ +2014-12-15 Jan Hubicka <hubicka@ucw.cz> + + * decl2.c (decl_needed_p): When not optimizing, do not consider external + decls as needed. + 2014-12-15 Jason Merrill <jason@redhat.com> PR c++/64297 diff --git a/gcc/cp/decl2.c b/gcc/cp/decl2.c index 07bdd92..b2123f2 100644 --- a/gcc/cp/decl2.c +++ b/gcc/cp/decl2.c @@ -1996,19 +1996,30 @@ decl_needed_p (tree decl) COMDAT until that point. */ gcc_assert (at_eof); - /* All entities with external linkage that are not COMDAT should be + /* All entities with external linkage that are not COMDAT/EXTERN should be emitted; they may be referred to from other object files. */ - if (TREE_PUBLIC (decl) && !DECL_COMDAT (decl)) + if (TREE_PUBLIC (decl) && !DECL_COMDAT (decl) && !DECL_REALLY_EXTERN (decl)) return true; - /* If this entity was used, let the back end see it; it will decide - whether or not to emit it into the object file. */ - if (TREE_USED (decl)) - return true; /* Functions marked "dllexport" must be emitted so that they are visible to other DLLs. */ if (flag_keep_inline_dllexport && lookup_attribute ("dllexport", DECL_ATTRIBUTES (decl))) return true; + + /* When not optimizing, do not bother to produce definitions for extern + symbols. */ + if (DECL_REALLY_EXTERN (decl) + && ((TREE_CODE (decl) != FUNCTION_DECL + && !optimize) + || (TREE_CODE (decl) == FUNCTION_DECL + && !opt_for_fn (decl, optimize))) + && !lookup_attribute ("always_inline", decl)) + return false; + + /* If this entity was used, let the back end see it; it will decide + whether or not to emit it into the object file. */ + if (TREE_USED (decl)) + return true; /* Virtual functions might be needed for devirtualization. */ if (flag_devirtualize && TREE_CODE (decl) == FUNCTION_DECL |