STM8L + Cosmic compiler: optimierung, die code unlogisch macht

#include "stm8l15x.h"

#include "stm8l15x_it.h"

main()

{ 

  uint8_t index;

  uint8_t element;

  CLK_DeInit();

  CLK_SYSCLKSourceSwitchCmd(ENABLE);

  CLK_SYSCLKSourceConfig(CLK_SYSCLKSource_HSI);

  CLK_SYSCLKDivConfig(CLK_SYSCLKDiv_1);

  while (CLK_GetSYSCLKSource() != CLK_SYSCLKSource_HSI)

  {}

  LCD_GLASS_Init();

  while(1)

  {  

    for(element = 0x00; element <= 0xFF; element++){

      for(index = 0x00; index <= 0xFF; index++){

        LCD->RAM[(uint8_t)element] = 0x00;

        LCD->RAM[(uint8_t)element] = index;

      }

      LCD->RAM[(uint8_t)element] = 0x00;

      delay_ms(750);

    }

  }

}