x86: Use DRAP only if there are outgoing arguments on stack

x86: Use DRAP only if there are outgoing arguments on stack

Since DRAP is needed only if there are outgoing arguments on stack, we
should track outgoing arguments on stack and avoid setting need_drap to
true when there are no outgoing arguments on stack.

gcc/

	PR target/81313
	* config/i386/i386.c (ix86_function_arg_advance): Set
	outgoing_args_on_stack to true if there are outgoing arguments
	on stack.
	(ix86_function_arg): Likewise.
	(ix86_get_drap_rtx): Use DRAP only if there are outgoing
	arguments on stack and ACCUMULATE_OUTGOING_ARGS is false.
	* config/i386/i386.h (machine_function): Add
	outgoing_args_on_stack.

gcc/testsuite/

	PR target/81313
	* gcc.target/i386/pr81313-1.c: New test.
	* gcc.target/i386/pr81313-2.c: Likewise.
	* gcc.target/i386/pr81313-3.c: Likewise.
	* gcc.target/i386/pr81313-4.c: Likewise.
	* gcc.target/i386/pr81313-5.c: Likewise.

From-SVN: r250084