http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41090
--- Comment #19 from Jason Merrill <jason at gcc dot gnu.org> --- Author: jason Date: Mon Dec 23 17:49:47 2013 New Revision: 206182 URL: http://gcc.gnu.org/viewcvs?rev=206182&root=gcc&view=rev Log: 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. Added: trunk/gcc/testsuite/g++.dg/ext/label13a.C trunk/gcc/testsuite/g++.dg/opt/declone1.C Modified: trunk/gcc/ChangeLog trunk/gcc/c-family/ChangeLog trunk/gcc/c-family/c-opts.c trunk/gcc/c-family/c.opt trunk/gcc/cgraph.c trunk/gcc/cgraph.h trunk/gcc/cgraphunit.c trunk/gcc/cif-code.def trunk/gcc/cp/ChangeLog trunk/gcc/cp/decl.c trunk/gcc/cp/mangle.c trunk/gcc/cp/method.c trunk/gcc/cp/optimize.c trunk/gcc/cp/semantics.c trunk/gcc/doc/invoke.texi trunk/gcc/ipa-cp.c trunk/gcc/ipa-inline-analysis.c trunk/gcc/ipa-inline-transform.c trunk/gcc/ipa-inline.c trunk/gcc/ipa.c trunk/gcc/lto-cgraph.c trunk/gcc/symtab.c trunk/include/ChangeLog trunk/include/demangle.h trunk/libiberty/ChangeLog trunk/libiberty/cp-demangle.c
