PR c++/41090

	Add -fdeclone-ctor-dtor.
gcc/cp/
	* optimize.c (can_alias_cdtor, populate_clone_array): Split out
	from maybe_clone_body.
	(maybe_thunk_body): New function.
	(maybe_clone_body): Call it.
	* mangle.c (write_mangled_name): Remove code to suppress
	writing of mangled name for cloned constructor or destructor.
	(write_special_name_constructor): Handle decloned constructor.
	(write_special_name_destructor): Handle decloned destructor.
	* method.c (trivial_fn_p): Handle decloning.
	* semantics.c (expand_or_defer_fn_1): Clone after setting linkage.
gcc/c-family/
	* c.opt: Add -fdeclone-ctor-dtor.
	* c-opts.c (c_common_post_options): Default to on iff -Os.
gcc/
	* cgraph.h (struct cgraph_node): Add calls_comdat_local.
	(symtab_comdat_local_p, symtab_in_same_comdat_p): New.
	* cif-code.def: Add USES_COMDAT_LOCAL.
	* symtab.c (verify_symtab_base): Make sure we don't refer to a
	comdat-local symbol from outside its comdat.
	* cgraph.c (verify_cgraph_node): Likewise.
	* cgraphunit.c (mark_functions_to_output): Don't mark comdat-locals.
	* ipa.c (symtab_remove_unreachable_nodes): Likewise.
	(function_and_variable_visibility): Handle comdat-local fns.
	* ipa-cp.c (determine_versionability): Don't clone comdat-locals.
	* ipa-inline-analysis.c (compute_inline_parameters): Update
	calls_comdat_local.
	* ipa-inline-transform.c (inline_call): Likewise.
	(save_inline_function_body): Don't clear DECL_COMDAT_GROUP.
	* ipa-inline.c (can_inline_edge_p): Check calls_comdat_local.
	* lto-cgraph.c (input_overwrite_node): Read calls_comdat_local.
	(lto_output_node): Write it.
	* symtab.c (symtab_dissolve_same_comdat_group_list): Clear
	DECL_COMDAT_GROUP for comdat-locals.
include/
	* demangle.h (enum gnu_v3_ctor_kinds):
	Added literal gnu_v3_unified_ctor.
	(enum gnu_v3_ctor_kinds):
	Added literal gnu_v3_unified_dtor.
libiberty/
	* cp-demangle.c (cplus_demangle_fill_ctor,cplus_demangle_fill_dtor):
	Handle unified ctor/dtor.
	(d_ctor_dtor_name): Handle unified ctor/dtor.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206182 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 12 insertions, 1 deletions

diff --git a/gcc/ipa-inline-transform.c b/gcc/ipa-inline-transform.c
index 7fb4ab97fa4..71d7800cea1 100644
--- a/gcc/ipa-inline-transform.c
+++ b/gcc/ipa-inline-transform.c
@@ -272,6 +272,18 @@ inline_call (struct cgraph_edge *e, bool update_original,
    inline_update_overall_summary (to);
   new_size = inline_summary (to)->size;
 
+  if (callee->calls_comdat_local)
+    to->calls_comdat_local = true;
+  else if (to->calls_comdat_local && symtab_comdat_local_p (callee))
+    {
+      struct cgraph_edge *se = to->callees;
+      for (; se; se = se->next_callee)
+	if (se->inline_failed && symtab_comdat_local_p (se->callee))
+	  break;
+      if (se == NULL)
+	to->calls_comdat_local = false;
+    }
+
 #ifdef ENABLE_CHECKING
   /* Verify that estimated growth match real growth.  Allow off-by-one
      error due to INLINE_SIZE_SCALE roudoff errors.  */
@@ -369,7 +381,6 @@ save_inline_function_body (struct cgraph_node *node)
   /* The function will be short lived and removed after we inline all the clones,
      but make it internal so we won't confuse ourself.  */
   DECL_EXTERNAL (first_clone->decl) = 0;
-  DECL_COMDAT_GROUP (first_clone->decl) = NULL_TREE;
   TREE_PUBLIC (first_clone->decl) = 0;
   DECL_COMDAT (first_clone->decl) = 0;
   first_clone->ipa_transforms_to_apply.release ();