* config/i386/i386-protos.h (ix86_expand_xorsign): New prototype.
	(ix86_split_xorsign): Ditto.
	* config/i386/i386.c (ix86_expand_xorsign): New function.
	(ix86_split_xorsign): Ditto.
	* config/i386/i386.md (UNSPEC_XORSIGN): New unspec.
	(xorsign<mode>3): New expander.
	(xorsign<mode>3_1): New insn_and_split pattern.
	* config/i386/sse.md (xorsign<mode>3): New expander.

testsuite/ChangeLog:

	* lib/target-supports.exp
	(check_effective_target_xorsign): Add i?86-*-* and x86_64-*-* targets.
	* gcc.target/i386/xorsign.c: New test.

From-SVN: r267779