src/hotspot/cpu/x86/vm_version_x86.hpp

@@ -334,10 +334,11 @@
 #define CPU_FMA ((uint64_t)UCONST64(0x800000000))      // FMA instructions
 #define CPU_VZEROUPPER ((uint64_t)UCONST64(0x1000000000))       // Vzeroupper instruction
 #define CPU_AVX512_VPOPCNTDQ ((uint64_t)UCONST64(0x2000000000)) // Vector popcount
 #define CPU_VPCLMULQDQ ((uint64_t)UCONST64(0x4000000000)) //Vector carryless multiplication
 #define CPU_VAES ((uint64_t)UCONST64(0x8000000000))    // Vector AES instructions
+#define CPU_VNNI ((uint64_t)UCONST64(0x16000000000))   // Vector Neural Network Instructions
 
   enum Extended_Family {
     // AMD
     CPU_FAMILY_AMD_11H       = 0x11,
     // ZX

@@ -546,10 +547,12 @@
           result |= CPU_AVX512_VPOPCNTDQ;
         if (_cpuid_info.sef_cpuid7_ecx.bits.vpclmulqdq != 0)
           result |= CPU_VPCLMULQDQ;
         if (_cpuid_info.sef_cpuid7_ecx.bits.vaes != 0)
           result |= CPU_VAES;
+        if (_cpuid_info.sef_cpuid7_ecx.bits.avx512_vnni != 0)
+          result |= CPU_VNNI;
       }
     }
     if(_cpuid_info.sef_cpuid7_ebx.bits.bmi1 != 0)
       result |= CPU_BMI1;
     if (_cpuid_info.std_cpuid1_edx.bits.tsc != 0)

@@ -826,10 +829,11 @@
   static bool supports_fma()        { return (_features & CPU_FMA) != 0 && supports_avx(); }
   static bool supports_vzeroupper() { return (_features & CPU_VZEROUPPER) != 0; }
   static bool supports_vpopcntdq()  { return (_features & CPU_AVX512_VPOPCNTDQ) != 0; }
   static bool supports_vpclmulqdq() { return (_features & CPU_VPCLMULQDQ) != 0; }
   static bool supports_vaes()       { return (_features & CPU_VAES) != 0; }
+  static bool supports_vnni()       { return (_features & CPU_VNNI) != 0; }
 
   // Intel features
   static bool is_intel_family_core() { return is_intel() &&
                                        extended_cpu_family() == CPU_FAMILY_INTEL_CORE; }