--- a/src/hotspot/cpu/x86/vm_version_x86.hpp Wed Dec 12 15:35:20 2018 -0500
+++ b/src/hotspot/cpu/x86/vm_version_x86.hpp Wed Dec 12 14:48:34 2018 -0800
@@ -336,6 +336,7 @@
#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
@@ -548,6 +549,8 @@
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)
@@ -828,6 +831,7 @@
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() &&