rs6000-c.c (P9V_BUILTIN_VEC_XL_LEN_R, [...]): Add support for builtins vector unsigned char vec_xl_len_r (unsigned char *...

gcc/ChangeLog:

2017-09-26  Carl Love  <cel@us.ibm.com>

	* config/rs6000/rs6000-c.c (P9V_BUILTIN_VEC_XL_LEN_R,
	P9V_BUILTIN_VEC_XST_LEN_R): Add support for builtins
	vector unsigned char vec_xl_len_r (unsigned char *, size_t);
	void vec_xst_len_r (vector unsigned char, unsigned char *, size_t);
	* config/rs6000/altivec.h (vec_xl_len_r, vec_xst_len_r): Add defines.
	* config/rs6000/rs6000-builtin.def (XL_LEN_R, XST_LEN_R): Add
	definitions and overloading.
	* config/rs6000/rs6000.c (altivec_expand_builtin): Add case
	statement for P9V_BUILTIN_XST_LEN_R.
	(altivec_init_builtins): Add def_builtin for P9V_BUILTIN_STXVLL.
	* config/rs6000/vsx.md (lxvll, stxvll, xl_len_r, xst_len_r): Add
	define_expand and define_insn for the instructions and builtins.
	* doc/extend.texi: Update the built-in documentation file for the new
	built-in functions.
	* config/rs6000/altivec.md (altivec_lvsl_reg, altivec_lvsr_reg): Add
	define_insn for the instructions

gcc/testsuite/ChangeLog:

2017-09-26  Carl Love  <cel@us.ibm.com>

	* gcc.target/powerpc/builtins-5-p9-runnable.c: Add new runable test
	file for the new built-ins and the existing built-ins.

From-SVN: r253217