re PR debug/12389 ([testcase needed] ICE in gen_subprogram_die for nested function)
PR debug/12389
* Makefile.in (dwarf2out.o): Depend on cgraph.h.
* cgraph.c (cgraph_function_possibly_inlined_p): New function.
* cgraph.h (cgraph_function_possibly_inlined_p): Declare.
(cgraph_global_info): Add flag inlined
* dwarf2out.c (gen_subprogram_die, gen_decl_die): Use
cgraph_function_possibly_inded_p
* cgraphunit.c (mark_inline): Set inlined flag.
* toplev.c (rest_of_decl_compilation): Call outlining_inline_function
only for possibly inlined functions.
* c-decl.c (duplicate_decls): Never output abstract DIE representing old
body of function.