re PR target/51235 (ICE: in extract_insn, at recog.c:2137 (unrecognizable insn) with -O -ftree-vectorize -mavx2 -mxop)

	PR target/51235
	* config/i386/i386.c (ix86_expand_vcond): Generate TARGET_XOP
	patterns for supported mode only.

	PR target/51236
	* config/i386/i386.c (ix86_expand_builtin)
	<IX86_BUILTIN_GATHERALTSIV4DI>: Use CODE_FOR_avx2_gathersiv4di.

testsuite/ChangeLog:

	PR target/51235
	* gcc.target/i386/pr51235.c: New test.

	PR target/51236
	* gcc.target/i386/pr51236.c: New test.

From-SVN: r181537