/* changedtest.c - An example of setting registers in the changed registers list */#include <stdio.h>int main(){   int data1 = 10;   int result = 20;   asm ("movl %1, %%eax\n\t"        "addl %%eax, %0"        : "=r"(result)        : "r"(data1), "0"(result)        : "%eax");   printf("The result is %d\n", result);   return 0;}