src/cpu/ppc/vm/vm_version_ppc.cpp

@@ -170,10 +170,15 @@
     FLAG_SET_DEFAULT(UseSHA1Intrinsics, false);
     FLAG_SET_DEFAULT(UseSHA256Intrinsics, false);
     FLAG_SET_DEFAULT(UseSHA512Intrinsics, false);
   }
 
+  // This machine does not allow unaligned memory accesses
+  if (! FLAG_IS_DEFAULT(UseUnalignedAccesses)) {
+    warning("Unaligned memory access is not available on this CPU");
+    FLAG_SET_DEFAULT(UseUnalignedAccesses, false);
+  }
 }
 
 void VM_Version::print_features() {
   tty->print_cr("Version: %s cache_line_size = %d", cpu_features(), (int) get_cache_line_size());
 }