asm.emitMTLR(T0);
asm.emitMTCTR(T0);
  protected final void emit_instanceof(VM_Type typeRef, VM_Method target) {    asm.emitLtoc(T0,  target.getOffset());                asm.emitMTLR(T0);    asm.emitL   (T0, 0, SP);    asm.emitLVAL(T1, typeRef.getTibOffset());    asm.emitCall(spSaveAreaOffset);    asm.emitST  (T0, 0, SP);  }