src/cpu/sparc/vm/vm_version_sparc.cpp

@@ -345,10 +345,16 @@
   } else if (UseAdler32Intrinsics) {
     warning("SPARC Adler32 intrinsics require VIS3 instruction support. Intrinsics will be disabled.");
     FLAG_SET_DEFAULT(UseAdler32Intrinsics, false);
   }
 
+  if (UseOnSpinWaitIntrinsic) {
+    if (!FLAG_IS_DEFAULT(UseOnSpinWaitIntrinsic))
+      warning("onSpinWait intrinsic is not available on this CPU");
+    FLAG_SET_DEFAULT(UseOnSpinWaitIntrinsic, false);
+  }
+
   if (FLAG_IS_DEFAULT(ContendedPaddingWidth) &&
     (cache_line_size > ContendedPaddingWidth))
     ContendedPaddingWidth = cache_line_size;
 
   // This machine does not allow unaligned memory accesses