rs6000: Add support for the vec_sbox_be, vec_cipher_be etc. builtins.

rs6000: Add support for the vec_sbox_be, vec_cipher_be etc. builtins.

The 5 new builtins vec_sbox_be, vec_cipher_be, vec_cipherlast_be, vec_ncipher_be
and vec_ncipherlast_be only support vector unsigned char type parameters.
Add new instruction crypto_vsbox_<mode> and crypto_<CR_insn>_<mode> to handle
them accordingly, where the new mode CR_vqdi can be expanded to vector unsigned
long long for none _be postfix builtins or vector unsigned char for _be postfix
builtins.

gcc/ChangeLog

2019-02-13  Xiong Hu Luo  <luoxhu@linux.vnet.ibm.com>

	* config/rs6000/altivec.h (vec_sbox_be, vec_cipher_be,
	vec_cipherlast_be, vec_ncipher_be, vec_ncipherlast_be): New #defines.
	* config/rs6000/crypto.md (CR_vqdi): New define_mode_iterator.
	(crypto_vsbox_<mode>, crypto_<CR_insn>_<mode>): New define_insns.
	* config/rs6000/rs6000-builtin.def (VSBOX_BE): New BU_CRYPTO_1.
	(VCIPHER_BE, VCIPHERLAST_BE, VNCIPHER_BE, VNCIPHERLAST_BE):
	New BU_CRYPTO_2.
	* config/rs6000/rs6000.c (builtin_function_type)
	<CRYPTO_BUILTIN_VSBOX_BE, CRYPTO_BUILTIN_VCIPHER_BE,
	CRYPTO_BUILTIN_VCIPHERLAST_BE, CRYPTO_BUILTIN_VNCIPHER_BE,
	CRYPTO_BUILTIN_VNCIPHERLAST_BE>: New switch options.
	* doc/extend.texi (vec_sbox_be, vec_cipher_be, vec_cipherlast_be,
	vec_ncipher_be, vec_ncipherlast_be): New builtin functions.

gcc/testsuite/ChangeLog

2019-02-13  Xiong Hu Luo  <luoxhu@linux.vnet.ibm.com>

	* gcc.target/powerpc/crypto-builtin-1.c
	(crypto1_be, crypto2_be, crypto3_be, crypto4_be, crypto5_be):
	New testcases.

From-SVN: r268834