[PATCH][i386,AVX] Enable VAES support [3/5]

[Koval, Julia]

Patch attached.

> -----Original Message-----
> From: Koval, Julia
> Sent: Wednesday, November 08, 2017 1:38 PM
> To: 'GCC Patches' <gcc-patches@gcc.gnu.org>
> Cc: 'Kirill Yukhin' <kirill.yukhin@gmail.com>
> Subject: [PATCH][i386,AVX] Enable VAES support [3/5]
> 
> Hi, this patch enables VAESDECLAST instruction from VAES isaset, defined here:
> https://software.intel.com/sites/default/files/managed/c5/15/architecture-
> instruction-set-extensions-programming-reference.pdf
> 
> Ok for trunk?
> Thanks,
> Julia
> 
> gcc/
> 	* config/i386/i386-builtin.def (__builtin_ia32_vaesdeclast_v16qi,
> 	__builtin_ia32_vaesdeclast_v32qi, __builtin_ia32_vaesdeclast_v64qi):
> New.
> 	* config/i386/sse.md (vaesdeclast_<mode>): New pattern.
> 	* config/i386/vaesintrin.h (_mm256_aesdeclast_epi128,
> 	_mm512_aesdeclast_epi128, _mm_aesdeclast_epi128): New intrinsics.
> 
> gcc/testsuite/
> 	* gcc.target/i386/avx512f-aesdeclast-2.c: New test.
> 	* gcc.target/i386/avx512vl-aesdeclast-2.c
> 	* gcc.target/i386/avx512fvl-vaes-1.c: Handle new intrinsics.
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