* cgraph.c (cgraph_varpool_finalize_decl): Sanity check duplicated
finalization.
* cgraphunit.c (decide_is_fnction_needed): Avoid special case of nested
functions, check for COMDAT.
(cgraph_assemble_pending_functions): Break out from...
(cgraph_finalize_function): ... here; allow redefinig of extern inline
functions.
(record_call_1): Record function references only in non-unit-at-a-time
mode.
(cgraph_analyze_function): Reset current_function_decl.
(cgraph_finalize_compilation_unit): Assemble pending functions.