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