8371161: [AArch64] Enable CPU feature UseSHA3Intrinsics for the Qualcomm processor family

Reviewed-by: aph, haosun

Author: Dhamoder Nalla

src/hotspot/cpu/aarch64/vm_version_aarch64.cpp

@@ -378,8 +378,8 @@ void VM_Version::initialize() {
   if (UseSHA && VM_Version::supports_sha3()) {
     // Auto-enable UseSHA3Intrinsics on hardware with performance benefit.
     // Note that the evaluation of UseSHA3Intrinsics shows better performance
-    // on Apple silicon but worse performance on Neoverse V1 and N2.
-    if (_cpu == CPU_APPLE) {  // Apple silicon
+    // on Apple and Qualcomm silicon but worse performance on Neoverse V1 and N2.
+    if (_cpu == CPU_APPLE || _cpu == CPU_QUALCOMM) {  // Apple or Qualcomm silicon
       if (FLAG_IS_DEFAULT(UseSHA3Intrinsics)) {
         FLAG_SET_DEFAULT(UseSHA3Intrinsics, true);
       }

src/hotspot/cpu/aarch64/vm_version_aarch64.hpp

@@ -106,7 +106,7 @@ class VM_Version : public Abstract_VM_Version {
     CPU_MOTOROLA  = 'M',
     CPU_NVIDIA    = 'N',
     CPU_AMCC      = 'P',
-    CPU_QUALCOM   = 'Q',
+    CPU_QUALCOMM  = 'Q',
     CPU_MARVELL   = 'V',
     CPU_INTEL     = 'i',
     CPU_APPLE     = 'a',

src/hotspot/os_cpu/windows_aarch64/vm_version_windows_aarch64.cpp

@@ -84,6 +84,8 @@ void VM_Version::get_os_cpu_info() {
       _cpu = CPU_AMCC;
     } else if (buf && strstr(buf, "Cavium Inc.") != nullptr) {
       _cpu = CPU_CAVIUM;
+    } else if (buf && strstr(buf, "Qualcomm Technologies Inc") != nullptr) {
+      _cpu = CPU_QUALCOMM;
     } else {
       log_info(os)("VM_Version: unknown CPU model");
     }