LPCXpresso IDE erzeugt fehlerhaften Maschinencode?

/*

===============================================================================

 Name        : main.c

 Author      : 

 Version     :

 Copyright   : Copyright (C) 

 Description : main definition

===============================================================================

*/

#include "LPC17xx.h"

#include <cr_section_macros.h>

#include <NXP/crp.h>

// Variable to store CRP value in. Will be placed automatically

// by the linker when "Enable Code Read Protect" selected.

// See crp.h header for more information

__CRP const unsigned int CRP_WORD = CRP_NO_CRP ;

// TODO: insert other include files here

// TODO: insert other definitions and declarations here

int main(void) {

   uint32_t i, j;

    /* SystemClockUpdate() updates the SystemFrequency variable */

    //SystemClockUpdate();

    LPC_GPIO2->FIODIR = 0x000000FF;    /* P2.xx defined as Outputs */

    LPC_GPIO2->FIOCLR = 0x000000FF;    /* turn off all the LEDs */

    while(1)

    {

    for(i = 0; i < 8; i++)

    {

      LPC_GPIO2->FIOSET = 1 << i;

      for(j = 1000000; j > 0; j--);

    }

    LPC_GPIO2->FIOCLR = 0x000000FF;

    for(j = 1000000; j > 0; j--);

    }

  return 0 ;

}