sourcebuild.texi (Effective-Target Keywords, [...]): Document avx512vp2intersect.

sourcebuild.texi (Effective-Target Keywords, [...]): Document avx512vp2intersect.

gcc/

2019-07-01  Hongtao Liu  <hongtao.liu@intel.com>

	* doc/sourcebuild.texi (Effective-Target Keywords, Other
	hardware attributes): Document avx512vp2intersect.

gcc/testsuite/

2019-07-01  Hongtao Liu  <hongtao.liu@intel.com>

	* lib/target-supports.exp
	(check_effective_target_avx512vp2intersect): New proc.
	* gcc.target/i386/avx512vp2intersect-2intersect-1b.c: Add
	dg-require-effective-target avx512vp2intersect.
	* gcc.target/i386/avx512vp2intersect-2intersectvl-1b.c: Ditto.

From-SVN: r272840