altivec.h: Remove vec_vextract4b and vec_vinsert4b.

altivec.h: Remove vec_vextract4b and vec_vinsert4b.

gcc/ChangeLog:

2018-02-16  Carl Love  <cel@us.ibm.com>

	* config/rs6000/altivec.h: Remove vec_vextract4b and vec_vinsert4b.
	* config/rs6000/rs6000-builtin.def: Remove macro expansion for
	VEXTRACT4B, VINSERT4B, VINSERT4B_DI and VEXTRACT4B.
	* config/rs6000/rs6000.c: Remove case statements for
	P9V_BUILTIN_VEXTRACT4B, P9V_BUILTIN_VEC_VEXTRACT4B,
	P9V_BUILTIN_VINSERT4B, P9V_BUILTIN_VINSERT4B_DI,
	and P9V_BUILTIN_VEC_VINSERT4B.
	* config/rs6000/rs6000-c.c (altivec_expand_builtin): Remove entries for
	P9V_BUILTIN_VEC_VEXTRACT4B and P9V_BUILTIN_VEC_VINSERT4B.
	* config/rs6000/vsx.md:
	* doc/extend.texi: Remove vec_vextract4b, non ABI definitions for
	vec_insert4b.

gcc/testsuite/ChangeLog:

2018-02-16  Carl Love  <cel@us.ibm.com>

	* gcc.target/powerpc/p9-vinsert4b-1.c: Remove test file for non-ABI
	tests.
	* gcc.target/powerpc/p9-vinsert4b-2.c: Remove test file for non-ABI
	tests.

From-SVN: r257748