* doc/tm.texi (ASM_WEAKEN_DECL): Document.
(ASM_WEAKEN_LABEL): Mention ASM_WEAKEN_DECL.
(SUPPORTS_WEAK): Likewise.
* output.h (add_weak): Add tree param.
* varasm.c (add_weak): Likewise. Save decl.
(struct weak_syms): Add decl field.
(mark_weak_decls): New function.
(init_varasm_once): ggc_add_root mark_weak_decls.
(assemble_start_function): Use ASM_WEAKEN_DECL.
(assemble_variable): Likewise.
(assemble_alias): Likewise.
(declare_weak): Pass decl to add_weak.
(weak_finish): Use ASM_WEAKEN_DECL. Try to find decl.
(remove_from_pending_weak_list): Declare and define for
ASM_WEAKEN_DECL.
* c-pragma.c (handle_pragma_weak): Adjust add_weak call.
* c-pragma.h (HANDLE_PRAGMA_WEAK): Define if ASM_WEAKEN_DECL too.
* defaults.h (SUPPORTS_WEAK): Likewise.
* config/rs6000/linux64.h (ASM_DECLARE_FUNCTION_NAME): Don't emit
.weak for code sym. Do emit .size for descriptor sym.
(ASM_DECLARE_FUNCTION_SIZE): Define.
* config/rs6000/rs6000.h (ASM_WEAKEN_DECL): Define.
(ASM_OUTPUT_DEF_FROM_DECLS): Don't emit .weak here. Don't output
.lglobl unless TARGET_XCOFF. Formatting fixes.
* config/rs6000/xcoff.h (ASM_DECLARE_FUNCTION_NAME): Don't emit
.weak for code sym.
(HANDLE_PRAGMA_WEAK): Remove.
(ASM_WEAKEN_LABEL): Remove.
* config/rs6000/aix.h (HANDLE_SYSV_PRAGMA): Define.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@50181
138bc75d-0d04-0410-961f-
82ee72b054a4