altivec.h (vec_bperm): Change #define.

[gcc]

2016-01-18  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* config/rs6000/altivec.h (vec_bperm): Change #define.
	* config/rs6000/altivec.md (UNSPEC_VBPERMD): New enum constant.
	(altivec_vbpermq2): New define_insn.
	(altivec_vbpermd): Likewise.
	* config/rs6000/rs6000-builtin.def (VBPERMQ2): New monomorphic
	function interface.
	(VBPERMD): Likewise.
	(VBPERM): New polymorphic function interface.
	* config/rs6000/r6000-c.c (altivec_overloaded_builtins_table):
	Add entries for P9V_BUILTIN_VEC_VBPERM.
	* doc/extend.texi: Add interfaces for vec_bperm.

[gcc/testsuite]

2016-01-18  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* gcc.target/powerpc/p8vector-builtin-8.c: Add new form for
	vec_bperm.
	* gcc.target/powerpc/p9-vbpermd.c: New file.

From-SVN: r244578