i386.c (ix86_expand_adjust_ufix_to_sfix_si): Add XORP argument.

i386.c (ix86_expand_adjust_ufix_to_sfix_si): Add XORP argument.

	* config/i386/i386.c (ix86_expand_adjust_ufix_to_sfix_si): Add
	XORP argument.  Subtract 0x1p31 instead of 0x1p32.  Use normal
	signalling comparison instead of non-signalling.  Store into
	*XORP pseudo holding 0x80000000 integers if 0x1p31 has been
	subtracted and 0 otherwise.
	* config/i386/i386-protos.h (ix86_expand_adjust_ufix_to_sfix_si):
	Adjust prototype.
	* config/i386/sse.md (fixuns_trunc<mode><sseintvecmodelower>2): Enable
	already for TARGET_SSE2.  Xor in vector initialized by
	ix86_expand_adjust_ufix_to_sfix_si at the end.
	(vec_pack_ufix_trunc_<mode>): Likewise.

	* gcc.dg/torture/vec-cvt-1.c: Enable flttointtestui test.

From-SVN: r180933