[obvious,AVX-512] Add missing AVX-512 features detection.

Hello,
Patch in the bottom adds missing AVX-512VBMI,IFMA
features to libgcc/config/i386/cpuinfo.c and, built-in expansion
and test.

Comitted to main trunk as obvious.

gcc/
	* config/i386/i386.c (processor_features): Add F_AVX512VBMI,
	F_AVX512IFMA.
	(isa_names_table): Handle F_AVX512VBMI and F_AVX512IFMA.
libgcc/
	* config/i386/cpuinfo.c (processor_features): Add
	FEATURE_AVX512VBMI and FEATURE_AVX512VBMI.
testsuite/
	* gcc.target/i386/builtin_target.c: Handle "avx512ifma"
	and "avx512vbmi".

--
Thanks, K

commit 39d9d882ed654e8b40095a24cb05baf661b81f3f
Author: Kirill Yukhin <kirill.yukhin@intel.com>
Date:   Fri Oct 2 18:08:33 2015 +0300

    AVX-512. Add missing features to cpuinfo.c

On Fri, Oct 2, 2015 at 5:25 PM, Kirill Yukhin <kirill.yukhin@gmail.com> wrote:
> Hello,
> Patch in the bottom adds missing AVX-512VBMI,IFMA
> features to libgcc/config/i386/cpuinfo.c and, built-in expansion
> and test.
>
> Comitted to main trunk as obvious.

The test now execute FAILs for me:

FAIL: gcc.target/i386/builtin_target.c execution test

I have family 6, model 94

flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe
syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts
rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq
dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid
sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx
f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb xsaveopt pln pts
dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1
hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap


> gcc/
>         * config/i386/i386.c (processor_features): Add F_AVX512VBMI,
>         F_AVX512IFMA.
>         (isa_names_table): Handle F_AVX512VBMI and F_AVX512IFMA.
> libgcc/
>         * config/i386/cpuinfo.c (processor_features): Add
>         FEATURE_AVX512VBMI and FEATURE_AVX512VBMI.
> testsuite/
>         * gcc.target/i386/builtin_target.c: Handle "avx512ifma"
>         and "avx512vbmi".
>
> --
> Thanks, K
>
> commit 39d9d882ed654e8b40095a24cb05baf661b81f3f
> Author: Kirill Yukhin <kirill.yukhin@intel.com>
> Date:   Fri Oct 2 18:08:33 2015 +0300
>
>     AVX-512. Add missing features to cpuinfo.c
>
> diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
> index 1ccc33e..1719175 100644
> --- a/gcc/config/i386/i386.c
> +++ b/gcc/config/i386/i386.c
> @@ -36591,6 +36591,8 @@ fold_builtin_cpu (tree fndecl, tree *args)
>      F_AVX512CD,
>      F_AVX512ER,
>      F_AVX512PF,
> +    F_AVX512VBMI,
> +    F_AVX512IFMA,
>      F_MAX
>    };
>
> @@ -36699,6 +36701,8 @@ fold_builtin_cpu (tree fndecl, tree *args)
>        {"avx512cd",F_AVX512CD},
>        {"avx512er",F_AVX512ER},
>        {"avx512pf",F_AVX512PF},
> +      {"avx512vbmi",F_AVX512VBMI},
> +      {"avx512ifma",F_AVX512IFMA},
>      };
>
>    tree __processor_model_type = build_processor_model_struct ();
> diff --git a/gcc/testsuite/gcc.target/i386/builtin_target.c b/gcc/testsuite/gcc.target/i386/builtin_target.c
> index aff4559..a9a8753 100644
> --- a/gcc/testsuite/gcc.target/i386/builtin_target.c
> +++ b/gcc/testsuite/gcc.target/i386/builtin_target.c
> @@ -200,6 +200,10 @@ check_features (unsigned int ecx, unsigned int edx,
>         assert (__builtin_cpu_supports ("avx512bw"));
>        if (ebx & bit_AVX512DQ)
>         assert (__builtin_cpu_supports ("avx512dq"));
> +      if (ebx & bit_AVX512IFMA)
> +       assert (__builtin_cpu_supports ("avx512ifma"));
> +      if (ebx & bit_AVX512VBMI)
> +       assert (__builtin_cpu_supports ("avx512vbmi"));
>      }
>  }
>
> diff --git a/libgcc/config/i386/cpuinfo.c b/libgcc/config/i386/cpuinfo.c
> index ddb49e3..40ed84c 100644
> --- a/libgcc/config/i386/cpuinfo.c
> +++ b/libgcc/config/i386/cpuinfo.c
> @@ -110,7 +110,9 @@ enum processor_features
>    FEATURE_AVX512DQ,
>    FEATURE_AVX512CD,
>    FEATURE_AVX512ER,
> -  FEATURE_AVX512PF
> +  FEATURE_AVX512PF,
> +  FEATURE_AVX512VBMI,
> +  FEATURE_AVX512IFMA
>  };
>
>  struct __processor_model
> @@ -336,6 +338,10 @@ get_available_features (unsigned int ecx, unsigned int edx,
>         features |= (1 << FEATURE_AVX512PF);
>        if (ebx & bit_AVX512ER)
>         features |= (1 << FEATURE_AVX512ER);
> +      if (ebx & bit_AVX512IFMA)
> +       features |= (1 << FEATURE_AVX512IFMA);
> +      if (ecx & bit_AVX512VBMI)
> +       features |= (1 << FEATURE_AVX512VBMI);
>      }
>
>    unsigned int ext_level;