gimple.c (gimple_call_builtin_p): New function.
* gimple.c (gimple_call_builtin_p): New function.
* gimple.h (gimple_call_builtin_p): Declare.
* tree-cfg.c (make_edges): Produce edge from BUILT_IN_RETURN
to exit.
(execute_warn_function_return): BUILT_IN_RETURN is return.
(split_critical_edges): Return edges are not critical.
(is_ctrl_altering_stmt): Builtin_in_return is altering.
(gimple_verify_flow_info): Handle built_in_return.
(execute_warn_function_return): Handle built_in_return.
* ipa-pure-const.c (check_call): Ignore builtin_return.
* gcc.dg/builtin-apply4.c: Compile with -Wmissing-return.
From-SVN: r160079