sparc.c (function_arg_pass_by_reference): Return 1 for SCmode and DCmode if ARCH32.

sparc.c (function_arg_pass_by_reference): Return 1 for SCmode and DCmode if ARCH32.

	* config/sparc/sparc.c (function_arg_pass_by_reference): Return 1
	for SCmode and DCmode if ARCH32.
	(sparc_va_arg): Handle SCmode and DCmode by reference if ARCH32.
	* config/sparc/sparc.h (RETURN_IN_MEMORY): Return 0 for TCmode
	if ARCH32.
	(BASE_RETURN_VALUE_REG): Return 32 for all FP modes except TFmode
	if ARCH32.
	(BASE_OUTGOING_VALUE_REG): Likewise.

From-SVN: r76708