src/cpu/aarch64/vm/vm_version_aarch64.cpp

rev 11452 : 8159063: aarch64: optimise unaligned array copy long
Reviewed-by: aph, adinn

@@ -173,11 +173,19 @@
     }
     fclose(f);
   }
 
   // Enable vendor specific features
-  if (_cpu == CPU_CAVIUM && _variant == 0) _features |= CPU_DMB_ATOMICS;
+  if (_cpu == CPU_CAVIUM) {
+    if (_variant == 0) _features |= CPU_DMB_ATOMICS;
+    if (FLAG_IS_DEFAULT(AvoidUnalignedAccesses)) {
+      FLAG_SET_DEFAULT(AvoidUnalignedAccesses, true);
+    }
+    if (FLAG_IS_DEFAULT(UseSIMDForMemoryOps)) {
+      FLAG_SET_DEFAULT(UseSIMDForMemoryOps, (_variant > 0));
+    }
+  }
   if (_cpu == CPU_ARM && (_model == 0xd03 || _model2 == 0xd03)) _features |= CPU_A53MAC;
   if (_cpu == CPU_ARM && (_model == 0xd07 || _model2 == 0xd07)) _features |= CPU_STXR_PREFETCH;
   // If an olde style /proc/cpuinfo (cpu_lines == 1) then if _model is an A57 (0xd07)
   // we assume the worst and assume we could be on a big little system and have
   // undisclosed A53 cores which we could be swapped to at any stage