VM_Magic.setObjectAtOffset(refs, i<<LOG_BYTES_IN_ADDRESS, null);
VM_Magic.setObjectAtOffset(refs, Offset.fromIntZeroExtend(i<<LOG_BYTES_IN_ADDRESS), null);
  public final static void cleanRefs(int i)     throws InlinePragma {    if (VM.TraceOnStackReplacement) {      VM.sysWriteln("OSR_ObjectHolder cleanRefs");    }    VM_Magic.setObjectAtOffset(refs, i<<LOG_BYTES_IN_ADDRESS, null); // refs[i] = null;  }