re PR target/84760 (Finish implementation of __builtin_altivec_lvx_v1ti)

re PR target/84760 (Finish implementation of __builtin_altivec_lvx_v1ti)

gcc/ChangeLog:

2018-03-22  Kelvin Nilsen  <kelvin@gcc.gnu.org>

	PR target/84760
	* doc/extend.texi: Add four new prototypes for vec_ld.
	* config/rs6000/rs6000-builtin.def (LVX_V1TI): Reorder symbol
	definitions for more logical presentation.
	* config/rs6000/rs6000-c.c: (altivec_overloaded_builtins): Add
	entries for V1TI variants of __builtin_altivec_ld builtin.
	* config/rs6000/rs6000.c: (altivec_expand_lv_builtin): Add test and
	handling of V1TI variant of LVX icode pattern.
	(altivec_expand_builtin): Add case for ALTIVEC_BUILTIN_LVX_V1TI.
	(rs6000_gimple_fold_builtin): Likewise.
	(altivec_init_builtins): Add code to define
	__builtin_altivec_lvx_v1ti function.

gcc/testsuite/ChangeLog:

2018-03-22  Kelvin Nilsen  <kelvin@gcc.gnu.org>

	PR target/84760
	* gcc.target/powerpc/altivec-ld-1.c: New test.

From-SVN: r258774