re PR target/10142 ([SPARC64] gcc produces wrong code when passing structures by...

re PR target/10142 ([SPARC64] gcc produces wrong code when passing structures by value)

	PR target/10142
	* config/sparc/sparc.c (function_arg_record_value_parms): Add
	new 'stack' field.
	(function_arg_record_value_1): Set 'stack' to 1 if we run out of
	integer slots for an integer field.
	(function_arg_record_value_3): Shift vector index.
	(function_arg_record_value_2): Likewise.
	(function_arg_record_value): Initialize 'stack' to 0.
	Set 'stack' to 1 if we run out of integer slots for an integer field.
	Generate (parallel [(expr_list (nil) ...) ...]) if 'stack' is set to 1.

Co-Authored-By: Christian Ehrhardt <ehrhardt@mathematik.uni-ulm.de>
From-SVN: r67874