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

[Kirill Yukhin]

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.yuk...@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;