re PR target/39082 (union with long double doesn't follow x86-64 psABI)

re PR target/39082 (union with long double doesn't follow x86-64 psABI)

gcc/

2009-02-17  H.J. Lu  <hongjiu.lu@intel.com>

	PR target/39082
	* c.opt (Wabi): Support C and ObjC.
	(Wpsabi): New.

	* c-opts.c (c_common_handle_option): Handle OPT_Wabi.

	* config/i386/i386.c (classify_argument): Warn once about the ABI
	change when passing union with long double.

	* doc/invoke.texi: Update -Wabi for warning psABI changes.

gcc/testsuite/

2009-02-17  H.J. Lu  <hongjiu.lu@intel.com>

	PR target/39082
	* g++.dg/compat/struct-layout-1_generate.c (dg_options): Add
	-Wno-abi for x86.
	* gcc.dg/compat/struct-layout-1_generate.c (dg_options): Likewise.

	* gcc.target/i386/pr39082-1.c: New.

	* gcc.target/x86_64/abi/abi-x86_64.exp (additional_flags): Add
	-Wno-abi.

	* gcc.target/x86_64/abi/args.h (XMM_T): Add _m64 and _m128 if
	CHECK_M64_M128 is defined.
	(check_f_arguments): Add "do".
	(check_vector_arguments): New.
	(check_m64_arguments): Likewise.
	(check_m128_arguments): Likewise.

	* gcc.target/x86_64/abi/defines.h: Include <xmmintrin.h>.
	(CHECK_M64_M128): Define.

	* gcc.target/x86_64/abi/test_m64m128_returning.c: New.  Based
	on abitest.
	* gcc.target/x86_64/abi/test_passing_m64m128.c: Likewise.

	* gcc.target/x86_64/abi/test_passing_structs.c: Define __m128
	tests only if CHECK_M64_M128 is defined.

	* gcc.target/x86_64/abi/test_passing_structs.c (m128_struct): New.
	(m128_2_struct): Likewise.
	(check_struct_passing5): Likewise.
	(check_struct_passing6): Likewise.
	(main): Test struct with __m128 if CHECK_M64_M128 is defined.

	* gcc.target/x86_64/abi/test_passing_unions.c (un4): New.
	(un5): Likewise.
	(check_union_passing4): Likewise.
	(main): Test union with __m128 if CHECK_M64_M128 is defined.

From-SVN: r144257