if (VM.VerifyAssertions) VM.assert(getOpcode() > MIR_START_opcode);
if (VM.VerifyAssertions) VM._assert(getOpcode() > MIR_START_opcode);
  public void markAsNonGCPoint() {    if (VM.VerifyAssertions) VM.assert(getOpcode() > MIR_START_opcode);    operatorInfo &= ~OI_GC;    operatorInfo |= OI_GC_VALID;  }