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| author | Jan Hubicka <hubicka@ucw.cz> | 2015-02-11 20:11:47 +0100 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2015-02-11 19:11:47 +0000 |
| commit | d3f2e41eae66b3699aaa6e2bfc4ce5b86cedd37e (patch) | |
| tree | 8ab6d8436aa96eaf64d3698bb24df0eaba1b0f19 /gcc | |
| parent | 0a7d7e09c8e8aa2c79479e48bd4fee31dd0fe532 (diff) | |
| download | gcc-d3f2e41eae66b3699aaa6e2bfc4ce5b86cedd37e.zip gcc-d3f2e41eae66b3699aaa6e2bfc4ce5b86cedd37e.tar.gz gcc-d3f2e41eae66b3699aaa6e2bfc4ce5b86cedd37e.tar.bz2 | |
ipa.c (symbol_table::remove_unreachable_nodes): Avoid releasing bodies of thunks; comment on why.
* ipa.c (symbol_table::remove_unreachable_nodes): Avoid releasing
bodies of thunks; comment on why.
* symtab.c (symtab_node::get_partitioning_class): Aliases of extern
symbols are extern.
From-SVN: r220630
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/ipa.c | 8 | ||||
| -rw-r--r-- | gcc/symtab.c | 4 |
3 files changed, 17 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 87bf089..d895209 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2015-02-11 Jan Hubicka <hubicka@ucw.cz> + + * ipa.c (symbol_table::remove_unreachable_nodes): Avoid releasing + bodies of thunks; comment on why. + * symtab.c (symtab_node::get_partitioning_class): Aliases of extern + symbols are extern. + 2015-02-11 Richard Henderson <rth@redhat.com> PR sanitize/65000 @@ -537,7 +537,13 @@ symbol_table::remove_unreachable_nodes (FILE *file) /* If node is unreachable, remove its body. */ else if (!reachable.contains (node)) { - if (!body_needed_for_clonning.contains (node->decl)) + /* We keep definitions of thunks and aliases in the boundary so + we can walk to the ultimate alias targets and function symbols + reliably. */ + if (node->alias || node->thunk.thunk_p) + ; + else if (!body_needed_for_clonning.contains (node->decl) + && !node->alias && !node->thunk.thunk_p) node->release_body (); else if (!node->clone_of) gcc_assert (in_lto_p || DECL_RESULT (node->decl)); diff --git a/gcc/symtab.c b/gcc/symtab.c index 3bfb04a..3cdf62a 100644 --- a/gcc/symtab.c +++ b/gcc/symtab.c @@ -1779,6 +1779,8 @@ symtab_node::get_partitioning_class (void) if (varpool_node *vnode = dyn_cast <varpool_node *> (this)) { + if (alias && definition && !ultimate_alias_target ()->definition) + return SYMBOL_EXTERNAL; /* Constant pool references use local symbol names that can not be promoted global. We should never put into a constant pool objects that can not be duplicated across partitions. */ @@ -1790,7 +1792,7 @@ symtab_node::get_partitioning_class (void) Handle them as external; compute_ltrans_boundary take care to make proper things to happen (i.e. to make them appear in the boundary but with body streamed, so clone can me materialized). */ - else if (!dyn_cast <cgraph_node *> (this)->definition) + else if (!dyn_cast <cgraph_node *> (this)->function_symbol ()->definition) return SYMBOL_EXTERNAL; /* Linker discardable symbols are duplicated to every use unless they are |