Fix -O3 stdarg miscompilation.

Fix -O3 stdarg miscompilation.
	* config/v850/v850.c (current_function_anonymous_args): Delete.
	(expand_prologue): Use current_function_args_info.anonymous_args.
	(expand_epilogue): Delete use of current_function_anonymous_args.
	* config/v850/v850.h (struct cum_arg): Add anonymous_args field.
	(INIT_CUMULATIVE_ARGS): Clear anonymous_args field.
	(current_function_anonymous_args): Delete extern declaration.
	(SETUP_INCOMING_VARARGS): Set anonymous_args field.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@57363 138bc75d-0d04-0410-961f-82ee72b054a4